Overview: We are seeking a talented Product Engineer specializing in Backend Development with Rust to take charge of and enhance the foundational systems that ensure AI safety at a large scale. Your role will involve constructing APIs capable of managing hundreds of millions of requests, implementing real-time policy enforcement, and developing high-throughput data pipelines.About UsWhite Circle is at the forefront of AI Safety, creating the essential safety, reliability, and optimization framework for AI systems. Our platform is built on policies—easily understandable natural-language rules that outline appropriate AI model behavior. We automatically test, enforce, and continuously refine these policies on a massive scale.We have secured $11M in funding from leading investors, founders, and executives from OpenAI, Anthropic, HuggingFace, Mistral, DeepMind, Datadog, Sentry, and others.Our systems process over one hundred million API calls each month.We optimize and train our own LLMs to operate more swiftly and cost-effectively than any publicly available or proprietary models.As a compact and highly focused team, we welcome those eager to tackle challenging problems, deliver their work to production swiftly, and actively shape the future of AI safety.Your Responsibilities:Design and implement backend services in Rust that facilitate real-time policy evaluations at scale, ensuring low latency and high reliability.Take ownership of features from inception to deployment: API design, database schema development, and continuous monitoring and iteration.Engage with different layers of the stack as needed; we prioritize problem-solving over rigid role definitions.Enhance system performance and reliability through connection pooling, caching strategies, query optimization, and observability practices.Collaborate directly with product managers, researchers, and ML teams to convert requirements into effective production systems.Ideal Candidate:You have experience building and deploying backend systems in Rust—beyond mere tutorials, you have real-world production experience.You are well-versed in async Rust (Tokio), web frameworks (Axum, Actix), and database interaction patterns.You possess strong system design fundamentals, capable of assessing trade-offs, failure modes, and scalability.You have hands-on experience with PostgreSQL, adept at crafting efficient queries and designing schemas.

Overview: We are seeking a talented Data Engineer to architect and develop our data pipelines from the ground up—managing petabytes of logs, events, and model traces—while establishing a seamless, reliable environment for production, testing, and research tasks.About UsAt White Circle, we focus on AI Safety by creating a robust layer that ensures the safety, reliability, and optimization of AI systems. Our platform is driven by policies, which are straightforward natural-language rules that specify the acceptable behaviors of AI models. We automatically test, enforce, and enhance these policies at scale.We have successfully raised $11M from leading investors, including founders and executives from OpenAI, Anthropic, HuggingFace, Mistral, DeepMind, Datadog, and Sentry.Our system handles over 100 million API calls every month.We develop and fine-tune our own Large Language Models (LLMs) to ensure they operate faster and more economically than any open-source or proprietary alternatives.As a small, dedicated team, we value deep engagement with challenging problems, rapid deployment of your contributions, and the opportunity to significantly impact the construction of AI safety.Your ResponsibilitiesEstablish and uphold a clean and stable data environment, allowing team members to access petabytes of traces, logs, and model outputs in their required formats without delays or manual extraction.Create and manage internal data APIs, SDKs, and tools that empower engineering, product, and research teams to explore, query, and utilize data independently of infrastructure concerns.Monitor and enhance data performance, optimizing table layouts and query plans to ensure smooth analytics and research workflows as data volumes increase.Oversee data access and governance by defining and enforcing permissions, access rules, and security protocols.Desired QualificationsProven experience building or scaling a modern data stack—such as Snowflake, ClickHouse, or event streaming—within a startup or similarly fast-paced environment.Strong proficiency in SQL and Python, with the ability to work effectively with large, complex datasets.Excellent communication skills, enabling you to collaborate directly with engineers and researchers. Fluency in English is required.Bonus: Experience with data visualization tools like Metabase, Tableau, or similar.

Join our team as a Data Scientist and play a key role in managing and optimizing Large Language Models (LLMs) for AI safety.About UsWhite Circle is a pioneering AI Safety company dedicated to enhancing the safety, reliability, and efficiency of AI systems. Our platform is built on policies—clear natural language rules that dictate the appropriate conduct of AI models. We automate the testing, enforcement, and continuous enhancement of these policies at scale.We have secured $11 million in funding from leading investors, including founders and senior leaders from OpenAI, Anthropic, HuggingFace, Mistral, DeepMind, Datadog, Sentry, and others.Our operations handle over 100 million API calls each month.We specialize in fine-tuning and training our own LLMs, enabling them to operate faster and at a lower cost than any available model.As a compact and dedicated team, we offer an environment where you can tackle complex challenges, expedite your work into production, and substantially influence the development of AI safety.Your Role:Transform vast amounts of unstructured text into a structured and navigable format (including topics, clusters, segments, trends, and anomalies), moving from “unknown unknowns” to stable definitions for tracking.Develop scalable representation pipelines: including sampling strategies, preprocessing/normalization, embeddings at scale, indexing, and retrieval, making the corpus searchable and analyzable.Utilize LLMs in practical applications: implementing labeling/classification, weak supervision, data enrichment, summarization, and automated diagnostics of incoming volumes, with cost and quality controls in place.Provide actionable insights that inform decisions: convert your findings into product and operational strategies (identifying available data, gaps, quality issues, and prioritization).Create self-service analytics resources: develop datasets, data models, and user-friendly tools/dashboards to enable team members to explore and address inquiries independently.Collaborate closely with engineering and research teams: ensure alignment of pipelines with production constraints (including latency, cost, and privacy) and integrate outputs into existing workflows.You Will Thrive If You:Possess strong skills in Python and SQL, with an engineering mindset capable of building reliable pipelines rather than just notebooks.Have practical experience in applied NLP/ML on real-world text: including embeddings, clustering, and model training.

Overview: We are on the hunt for a skilled DevOps Engineer to architect and sustain the cloud and on-premise infrastructure that powers our innovative platform. Your responsibilities will span Kubernetes clusters, CI/CD pipelines, observability, networking, and automation, ensuring our production environment is reliable, secure, and scalable.About White CircleWhite Circle is dedicated to AI Safety, developing a framework that guarantees the safety, reliability, and efficiency of AI systems. Central to our platform are policies—clear, natural-language guidelines that dictate the permissible actions of AI models. We automate the testing, enforcement, and enhancement of these policies at scale.We have successfully secured $11M in funding from industry leaders and top-tier investors, including veterans from OpenAI, Anthropic, HuggingFace, and more.Our systems handle over one hundred million API calls each month.We specialize in fine-tuning and training our own LLMs for optimal performance and cost-efficiency compared to existing models.As a small, focused team, we value deep engagement with challenging problems. If you’re eager to see your contributions rapidly deployed into production and influence the future of AI safety, we want to hear from you.Your Responsibilities:Design, develop, and maintain production infrastructure in AWS and on-premise environments.Oversee and enhance Kubernetes clusters for deployment, scalability, reliability, and daily operations.Develop and maintain CI/CD pipelines to facilitate safer, quicker, and more reliable software releases.Manage container infrastructure, focusing on Docker image management, runtime security, and overall lifecycle.Increase system reliability, performance, and observability through rigorous monitoring, alerting, and troubleshooting.Implement infrastructure as code using Terraform for consistent and adaptable environments.Manage networking across the stack, including routing, firewalls, load balancing, and inter-cluster communication.Automate processes and enhance workflows using Python scripts and internal tools.Collaborate with engineering and ML teams to bolster product infrastructure, internal platforms, and compute-intensive workloads.Ideal Candidate:Possesses a strong background in cloud infrastructure, particularly AWS.Demonstrates expertise in Kubernetes and CI/CD practices.Is proficient in Python and Terraform.Exhibits a solid understanding of networking concepts.Thrives in a collaborative, fast-paced environment.

Join our dynamic team as a Frontend Product Engineer and play a pivotal role in ensuring the safety and integrity of large language models (LLMs).About White CircleWhite Circle specializes in AI safety, developing a comprehensive framework for the reliability, safety, and optimization of AI systems. Our platform is centered around clear, natural-language policies that dictate the appropriate and inappropriate actions of AI models. We continuously test, enforce, and enhance these policies on a large scale.Secured $11 million in funding from leading investors, including founders and senior executives from OpenAI, Anthropic, HuggingFace, and more.Handling over 100 million API calls monthly.Expertly fine-tuning and training our own LLMs for enhanced performance and cost-effectiveness compared to other models.Our small, focused team is looking for individuals eager to tackle challenging problems, quickly implement their work into production, and significantly contribute to the development of AI safety standards.Your Qualifications:Proficient in TypeScript, React, Next.js, and Tailwind CSS.Experience with LLMs, including familiarity with the OpenAI API, function calling, and context management.Ability to write complex SQL queries without needing external references.Strong focus on design, usability, and performance, prioritizing quality over mere functionality.Your Responsibilities:Oversee and deliver product features across the entire stack, from design and implementation to deployment and ongoing improvements.Craft intuitive, high-quality user experiences, ensuring smooth transitions from user onboarding to in-depth analysis.Collaborate with founders, product managers, designers, ML engineers, and researchers to transform intricate AI functionalities into user-friendly, dependable products.Lead the complete development lifecycle while influencing technical direction, product strategy, and engineering culture.Why Choose White Circle?Competitive salary ranging from $80,000 to $150,000 plus equity options.20 days of paid vacation annually.Opportunities to work from Paris in a hybrid model, including a relocation package.

Quick Overview: In this role, you'll be at the forefront of AI development, training and refining vision-language models, extending their capabilities to video, creating alignment pipelines, developing evaluation benchmarks, optimizing production inference, and engaging with MoE architectures.About UsWhite Circle is a pioneering AI Safety organization dedicated to building a robust safety, reliability, and optimization framework for AI systems. Our platform operates on straightforward natural-language policies that dictate the appropriate behaviors of AI models. We automate the testing, enforcement, and ongoing enhancement of these policies at scale.We have successfully raised $11 million from prominent investors, including founders and senior leaders from OpenAI, Anthropic, HuggingFace, Mistral, DeepMind, Datadog, Sentry, and more.Our infrastructure processes over 100 million API calls every month.We specialize in fine-tuning and training our proprietary LLMs to ensure faster and more cost-efficient performance than any available open or proprietary models.We are a compact, highly motivated team. If you are eager to tackle challenging problems, get your work deployed rapidly, and significantly impact the construction of AI safety – we want to hear from you.Your Responsibilities:Train vision-language models from the ground up and fine-tune existing architectures for advanced image understanding.Expand VLM capabilities to video by designing innovative temporal modeling approaches and efficiently managing long-context.Develop impactful evaluation benchmarks focusing on visual QA, spatial reasoning, and video comprehension.Curate and maintain multimodal datasets, including creating synthetic data generation pipelines.Train and optimize MoE architectures to enhance multimodal inference efficiency.Deploy models into production, focusing on quantization, batching strategies, and latency optimization.You Will Excel If You Have:3+ years of experience in training and fine-tuning vision-language models (e.g., LLaVA, Qwen-VL, InternVL).A strong background in multimodal architectures, with a clear understanding of how vision encoders, projectors, and LLMs integrate.Hands-on experience with RLHF/alignment for multimodal systems, specifically GRPO, DPO, and reward modeling.Experience in video understanding, including temporal modeling and efficient attention mechanisms.

At White Circle, we are creating a safety layer for contemporary AI systems—an innovative application designed to prevent harmful behaviors and ensure the security of AI in our world. Organizations leverage our platform to gain insights into their models’ behaviors, identify potential failures proactively, and maintain stable and secure interactions.As a Digital Product Brand Designer, you will play a pivotal role in defining the visual identity of White Circle. Your responsibilities will encompass crafting illustrations, launch visuals, social media graphics, brand animations, and event graphics, all contributing to our unique visual voice.About White CircleWe have successfully raised $11 million from founding members and executives of top AI companies, including OpenAI, Anthropic, HuggingFace, Mistral, DeepMind, Datadog, Sentry, and more.We handle tens of millions of API requests each month.Your ResponsibilitiesDevelop and enhance our brand's visual identity.Design graphics for our website, announcements, product pages, and social media posts.Create visuals for events, presentations, and product launches.Transform complex AI concepts into visuals that are simple, clear, and impactful.Collaborate directly with product, engineering, and research teams, allowing for rapid iterations and complete ownership of your work.QualificationsA minimum of 5 years of experience in brand or graphic design.Proven ability to create visually appealing designs with a strong sense of taste, layout, and typography.Competency in basic animations using your preferred tools.Familiarity with AI tools integrated into your workflow.Why Join White Circle?Be part of a small, agile team that moves quickly.Experience a culture free from corporate politics.Enjoy real ownership of your projects and the ability to implement changes swiftly.Receive direct feedback and engage in honest collaboration.Contribute to meaningful projects that significantly impact how people interact with AI.Work in an office with stunning views in the heart of Paris, France (hybrid setup).CompensationSalary range: $60,000–120,000 + equity.Enjoy unlimited budget for professional development.

About the Role airapps is looking for a Backend QA Engineer in Paris to help keep our backend systems reliable and high quality. This role works closely with engineers and product managers to improve how we build and test software. What You Will Do Develop and maintain testing frameworks for backend applications Create automated tests to catch issues early and ensure smooth releases Collaborate with team members to refine development and QA processes Help uphold quality standards so our applications meet user needs Location This position is based in Paris.

Note: This position is based in Paris, France. Relocation and visa support are available if necessary.Achieve the Best Work of Your CareerTrade Republic stands as Europe's largest savings platform, actively engaging in 18 countries and serving over 10 million customers who trust us with more than €150 billion in assets. Our ambition goes beyond that.Our mission is to empower individuals to build wealth through easy, safe, and free access to financial systems. Join us to advance your career while collaborating with exceptional talent and cutting-edge technology, creating a positive impact for millions.Your ResponsibilitiesDevelop and test services and products utilizing modern tools from the JVM ecosystem, including Kotlin, Spring, Vert.x, Hibernate, or jOOQ.Design cloud services with a focus on high availability, low latency, and scalability (primarily on AWS).Implement automated software delivery through GitHub Actions, container-based CI/CD pipelines, and Kubernetes orchestration.Ideal Candidate ProfileA minimum of 5 years of experience in software engineering, preferably within the JVM ecosystem. We welcome candidates from mid to staff level, so whether you are looking to take on more ownership or have extensive experience leading complex systems, we encourage you to apply.Proven experience in developing and deploying scalable features within a service-oriented architecture.A strong dedication to delivering reliable and maintainable software through an iterative development approach and continuous delivery.Experience in building platform services that serve as a foundation for product development (prior experience in platform-focused teams is advantageous).Comfortable working in a flexible hybrid environment, with 2-3 days a week in the office.Why You Should Apply NowOur culture celebrates ownership, excellence, and high energy. We prioritize outcomes and accountability as we strive to tackle one of Europe's significant challenges: closing the pension gap and democratizing wealth. If you resonate with this mission, we want to hear from you!

Join our dynamic team as a Backend Engineer specializing in Rust at connecthum, a pioneering AI infrastructure startup dedicated to constructing the safety and control layers for expansive AI systems.About connecthum:We are an AI-native product company focusing on AI safety and infrastructure.Supported by a diverse range of international investors.Our systems manage high volumes of AI traffic across enterprise environments.We train and fine-tune our proprietary models to ensure optimal performance and reliability.A compact yet highly skilled team that delivers rapid results.Our mission is to create the evaluation and control layer for AI systems, enabling organizations to define, test, and enforce AI behavior in real-world situations.Your Contribution:Design and implement robust Rust backend services that facilitate real-time policy enforcement.Take ownership of features from conception to deployment - including API design, database schema, and monitoring.Develop high-throughput data pipelines to manage extensive AI traffic efficiently.Enhance system performance, reliability, and observability.Collaborate across the stack as needed, prioritizing problem-solving over strict boundaries.Work closely with product, research, and ML teams to drive innovation.This role is hands-on, directly influencing how AI operates in production settings.Technical Environment:Asynchronous Rust (Tokio)Utilizing modern web frameworks such as Axum and ActixPostgreSQL for large-scale applicationsImplementing caching and event streaming architecturesBuilding high-throughput distributed systemsFocus on production observability and performance tuning(In-depth technical stack details will be shared during interviews)Your Expertise:Demonstrated production experience in developing backend systems using Rust.Strong foundation in asynchronous programming and concurrency principles.Excellent system design capabilities, including scalability, failure modes, and trade-offs.Proficient with PostgreSQL and other related technologies.

About Mistral AIAt Mistral AI, we harness the transformative potential of AI to streamline tasks, enhance creativity, and optimize learning experiences. Our cutting-edge technology seamlessly integrates into everyday workflows.We are committed to democratizing AI through high-performance, open-source solutions and state-of-the-art models. Our comprehensive AI platform is tailored to meet the diverse needs of enterprises, available both on-premises and in the cloud. Notably, our offerings include Le Chat, the AI assistant designed to elevate both personal and professional life.As a dynamic and collaborative team, we are passionate about AI's potential to create a significant societal impact. Our diverse workforce thrives in competitive environments and is dedicated to fostering innovation. With teams spread across France, the USA, the UK, Germany, and Singapore, we embody creativity, humility, and a strong team spirit.Join us in shaping the future of AI and make a meaningful impact. Discover more about our culture at https://mistral.ai/careers.Role OverviewWe are in search of enthusiastic and talented software engineers to join our team. As a Backend Engineer, you will play a crucial role in developing the core systems that power our key products: AI Studio, Le Chat, and Mistral Code. Your contributions will shape the way users and developers interact with our AI platform at scale. You’ll focus on building reliable, high-performance backend systems and APIs that cater to millions of users and developers. Your work will greatly enhance both developer and user experiences, ensuring they are engaging, efficient, and intuitive. We welcome engineers of all levels, from recent graduates to seasoned professionals, who are eager to learn, collaborate, and deliver impactful solutions.Key ResponsibilitiesDepending on your expertise, you will engage with critical components of our technology, which may include:Backend Development- Design, develop, and maintain scalable and robust backend features and APIs using modern frameworks.- Ensure high performance and reliability across our distributed systems.

About MorphoMorpho is at the forefront of Decentralized Finance (DeFi), operating a cutting-edge lending protocol that has recently garnered $50 million in funding from renowned investors, including Ribbit Capital, a16z crypto, and Coinbase Ventures. Our vision is to create an open lending network that democratizes access to the best financial terms for all. With over $10 billion in deposits, Morpho is rapidly redefining the standards of DeFi lending. We are expanding our team to solidify our position as a key player in the emerging internet-native financial ecosystem.Our MissionAt Morpho, we believe in empowering human ambition by providing open access to capital. The current financial landscape is fragmented, leaving many opportunities unseen and many individuals overpaying or entirely excluded. We strive to ensure that capital flows efficiently to where it is most needed, enabling anyone, anywhere, to access optimal terms.LocationThis role can be based in Paris or remotely (candidates located between -5 GMT and +2 GMT are encouraged to apply to ensure effective collaboration with our team).Our Work CultureWe thrive in a fast-paced environment where tackling challenging problems is the norm. As we navigate this evolving market, adaptability is crucial. We foster a culture of open communication where questioning decisions is encouraged. Our team maintains high standards while supporting each other to overcome obstacles and share knowledge. To learn more about our values, visit morpho.org/jobs.Role & ResponsibilitiesAs a Backend Engineer, you will be responsible for designing, building, and maintaining high-performance backend services and APIs that are crucial to Morpho’s user-facing features. Depending on your level of experience, you may take ownership of specific backend domains, mentor junior engineers, and contribute to cross-team initiatives.Your Responsibilities Include:Develop, deploy, and maintain backend services using TypeScript/Node and GraphQL, ensuring reliable and low-latency experiences for users.Design and optimize relational data schemas (PostgreSQL) for accuracy, performance, and maintainability.Collaborate with cross-functional teams including frontend, product, protocol, risk, and security to deliver seamless integrations.

Trade Republic Bank is looking for recent graduates to join the Backend Engineering Program in Paris. This team builds and maintains the core systems behind Europe’s leading savings platform, which serves over 10 million customers across 18 countries and manages more than €150 billion in assets. This program offers a hands-on introduction to backend engineering in a high-impact, real-world setting. Graduate engineers work alongside experienced developers who provide mentorship and support as you move from academic knowledge to building production-ready systems. What you will do Contribute to backend services using modern JVM technologies such as Kotlin, Java, and Spring Assist in designing and developing scalable, reliable systems Work with APIs, databases, and service-oriented architectures Learn to write clean, maintainable, and well-tested code Collaborate with Product and Engineering teams to deliver features for users Gain exposure to cloud infrastructure (AWS), containerization, and CI/CD pipelines Help debug, monitor, and improve system performance Gradually take ownership of well-defined technical projects Learning and growth Participants will see how backend systems are built, deployed, and scaled in a live production environment. The program is designed to help you develop practical engineering skills while contributing to projects that matter to millions of users.

About the Role airapps is looking for a backend engineer to help build and maintain the systems behind our applications. This position is based in Paris and focuses on developing backend solutions that scale and perform reliably. What You Will Do Design, implement, and maintain backend systems for airapps products Work closely with teammates to solve technical challenges Contribute to a collaborative team environment Who We’re Looking For Experience building backend systems Comfort working with others to solve problems Interest in developing efficient and scalable solutions This is a full-time role in Paris. If building reliable backend infrastructure with a team sounds appealing, airapps would like to connect.

About the APM Data Hub Team The APM Data Hub sits at the heart of Datadog's Application Performance Monitoring suite. This team builds and maintains a backend pipeline that processes, transforms, and routes tracing data at scale after ingestion. The pipeline supports not only APM Distributed Tracing but also a growing set of Datadog products that rely on rich trace data. Role Overview: Engineering Manager I – APM Backend Based in Paris, this role leads a distributed team of 6 engineers. The manager sets the technical direction for a platform that is central to Datadog's product ecosystem. Responsibilities include defining the roadmap for tracing data processing, making trace data accessible to internal consumers, and upholding strong engineering standards for a system that must run reliably at scale. What You Will Do Guide and support a diverse engineering team working on backend data pipelines Shape the technical vision and roadmap for trace data processing Ensure the platform meets high reliability and engineering standards Facilitate collaboration with other product teams that depend on trace data Address complex engineering challenges that affect multiple Datadog products Workplace and Culture Datadog values in-person collaboration and creativity. The company supports a hybrid work model, helping employees balance office life and personal needs.

Join us as a pivotal member of the Backend team at amo, where you'll play a critical role in shaping our infrastructure. In the initial months, you will collaborate closely with the team and gradually take charge of key components and features. At this early stage of our journey, we are in search of adaptable engineers who are eager to contribute across multiple facets of our company’s foundation.We appreciate team members who dive deeply into their areas of expertise, fostering a culture of subject matter mastery within our team. This dedication to specialization is a core expectation for every engineer.Our backend team is responsible for both server-side operations and the backbone of the client, as we believe a unified team can more effectively manage topics like networking, data modeling, management, and synchronization.As a Backend Engineer, your daily responsibilities will include:Building the FutureYou will develop robust systems designed to handle significant traffic, vast amounts of data, and an unparalleled rate of scaling. Your toolkit will include cutting-edge technologies, elegantly crafted code, and systems built for seamless horizontal scaling.Ensuring Cross-Platform CohesionBeyond server-side development, you will be involved in the enhancement and maintenance of a Rust component shared between iOS and Android. This component primarily focuses on networking, data synchronization, and data-oriented feature logic, benefiting from a single codebase. You will collaborate with mobile engineers to ensure a consistent experience across platforms and bridge the gap between mobile development and backend architecture for a cohesive user journey.Innovative Feature DevelopmentEngage in brainstorming sessions to design and implement unique features that distinguish us in the marketplace.Commitment to Continuous ImprovementWe value mutual learning and staying updated with industry trends and emerging technologies, encouraging fresh ideas and contributions to our culture of continuous improvement.Ownership of Your DomainYou will monitor analytics and manage system incidents, taking ownership of your responsibilities and proactively addressing issues and bug fixes.

About PreludeAt Prelude, we are pioneering a new standard for user onboarding and authentication in an era where trust, speed, and conversion are paramount.Our innovative solutions streamline user verification, enhancing security and efficiency while transforming authentication into a strategic advantage. Our flagship product boasts the highest price-to-conversion ratio for OTP code delivery, intelligently adapting to utilize the most effective channels in real-time—whether through optimized SMS routing or popular messaging applications like WhatsApp. Additionally, Prelude actively mitigates spam and fraud risks that traditional providers often overlook, thereby safeguarding both profit margins and user experiences.Established in 2022 and supported by prominent venture capital firms, Prelude has rapidly achieved significant market traction and robust financial health, catering to fast-growing companies throughout Europe and making strides into the US market. Authentication is merely the beginning of our journey.With a forward-thinking roadmap and a suite of market-defining products in the pipeline, we are developing a scalable trust platform that empowers businesses to effortlessly onboard users, combat fraud intelligently, and expand confidently across the globe.About Our TeamThe Prelude team consists of former Zenly professionals who have experienced the limitations of current authentication systems firsthand. While developing products that serve millions, we recognized the challenges posed by costly and unreliable SMS authentication, leading to the inception of Prelude.Currently, our team of 40 is based in Paris, dedicated to creating high-performance, secure user onboarding solutions for businesses in Europe and the US. We believe that small, highly skilled teams are more effective than large, fragmented organizations, and we prioritize impact, quality, and agility.We embrace a flat organizational structure that enhances in-person collaboration, facilitating rapid idea exchange, grounded decision-making, and full ownership of our projects.Our core values guide our daily operations:CareWe are deeply invested in our customers, our colleagues, and the quality and reliability of our products.

Join Capi as a Product EngineerCapi is revolutionizing the financial infrastructure for trade in emerging markets. With over $18M in funding from prestigious investors such as Creandum, Y Combinator, and General Catalyst, we are committed to making global trade easier and more accessible, enabling local businesses to thrive and contribute to their communities’ prosperity.Our mission is to enhance GDP in emerging markets by creating a more equitable global financial system. We simplify the process for importers to pay their international suppliers, allowing businesses to expand rapidly, create jobs, and drive prosperity in their countries.Our diverse team of approximately 80 passionate individuals spans 10 countries, united by a shared ambition to make a tangible impact in the world. We are looking for driven individuals to join us in this mission!Role OverviewAs a Product Engineer, you'll be an integral part of a dynamic team of engineers and product leaders, collaborating closely with our founding team across London and Paris. You'll have the opportunity to shape the product vision and technical architecture from day one. Your role will involve building innovative technology solutions that address customer challenges as we expand our reach in emerging markets.To succeed, you should possess a deep sense of empathy and curiosity to understand the root of problems, coupled with the creativity to devise solutions that balance impact, effort, and user satisfaction.Key ResponsibilitiesEngage in the product lifecycle from ideation to UI development, backend logic, deployment, and feedback measurement.Communicate updates about new features, gathering feedback pre-implementation and explaining details at launch.Define and oversee delivery milestones, ensuring alignment between engineering and product priorities.

Join us at iliad-free in Paris as a Staff Engineer specializing in Python. You will take on a pivotal role in our ambitious program aimed at modernizing and evolving our backend systems.Your primary responsibility will be to lead the technical direction of our information system backend, which manages all Free subscribers, including subscription processes, subscriber spaces, and additional services such as video streaming and mobile phone sales.In this role, you will develop a deep understanding of complex business processes executed by our system, such as billing for third-party services, subscription management, and fiber optic connections.You will guide the team in defining the architecture of this distributed system while actively contributing to development using Python, ensuring hands-on involvement.Your expertise will drive development practices that prioritize resilience, quality, testability, and speed of delivery. Additionally, you will be instrumental in establishing robust operational methods in a model where development teams manage their solutions in production, with a constant focus on performance and scalability.

Join Arago and the AragoniansAt Arago, we are a pioneering AI and computer hardware firm dedicated to advancing history through technological innovation. Our mission is to propel breakthroughs at the intersection of artificial intelligence and semiconductor technology.Founded in 2024 by a team of accomplished AI researchers and physicists, Arago combines expertise in photonics, electronics, software, mathematics, and machine learning. Our lean, diverse team hails from top companies and renowned research institutions around the globe.With employees representing nine nationalities and operating from strategic locations in France, North America, and Israel, we are driven by our commitment to excellence and rapid progress. Our guiding principles include:Deliver excellence: We take pride in our work and its impact.Act with urgency: We prioritize speed and efficiency.Foster unity: We build relationships based on trust, respect, and teamwork.With strong backing from leaders at Apple, Arm, Nvidia, Microsoft, and Hugging Face, along with significant support from leading deeptech venture firms in the US and Europe, we are poised for remarkable growth.