Senior Software Engineer - Paris

Please note that this position requires relocation to our Milan office.About SatispaySatispay is dedicated to transforming the way everyday payments are made, striving to make transactions simple, equitable, and accessible for all. Our vision has evolved to redefine the future of finance.We are a community of innovators empowering millions, united by a commo…

Note: This position requires relocation to our Milan office.About SatispaySatispay aims to transform everyday payments by making them straightforward, equitable, and accessible to all. Our vision has expanded to redefine the future of financial transactions.We are a community empowering millions, united by a common mission to tackle significant challenges. Our approach is swift, bold, and collaborative, fostering an environment where innovation thrives and growth is continuous.As part of the Core Team, you'll engage with vital systems, overseeing interactions with banks, orchestrating payments, and offering the essential infrastructure for Identity and Access Management (IAM). The team also manages risk-related services, focusing on credit risk management and fraud detection.If you are eager to create something impactful that underpins all our product teams, you belong here.Your ResponsibilitiesIn your role as a Senior Backend Software Engineer within the Core Team, you will be pivotal in shaping the backbone of our payment platform. You will ensure the technical excellence and timely delivery of complex systems that influence various services and product teams across the organization.Your daily tasks will include:Core Platform Development: Contributing to the design and enhancement of critical systems like the Transaction Ledger, IAM, and Payment Orchestration, ensuring high performance, scalability, and functionality for seamless integration by product teams.Risk & Financial Services Optimization: Implementing and refining services for bank integrations, credit risk assessment, and real-time fraud detection, developing robust logic that safeguards our financial ecosystem.Technical Leadership: Leading technical analyses for cross-service projects, facilitating discussions, and producing comprehensive documentation (Smart Papers) to ensure clarity and robustness in your designs for stakeholders and engineering teams.

Important: This position requires relocation to our Milan office.About SatispayAt Satispay, we are on a mission to transform daily payments into a seamless, equitable, and user-friendly experience. Our vision extends beyond payments; we aim to redefine the future of finance. As a dynamic movement, we empower millions to confront significant challenges with a shared purpose. And this is just the beginning.We pride ourselves on our ability to adapt swiftly, think innovatively, and foster an environment of mutual trust where challenging the status quo is encouraged. If you are seeking more than just another job and aspire to create a meaningful impact alongside a talented team, you have found the right place.Your RoleAs a Staff Software Engineer in our Consumer Wealth team, you will play a pivotal role in defining how our users cultivate and manage their savings and investments. You will be the principal technical authority for the Consumer sector, spearheading initiatives that enable millions to enhance their financial wellness through our innovative savings products and investment solutions.Your daily responsibilities will include:Define Technical Strategy: Formulate the technical strategy for the Consumer Wealth domain. Architect intricate subsystems that support savings and investment features with cross-product considerations, leading impactful initiatives across multiple teams.Advance the Architecture: Design and implement scalable, high-quality systems that address complex financial engineering challenges, streamlining sophisticated back-end systems for wealth management.Technical Thought Leadership: Cultivate cross-organizational partnerships to align technical visions, advocate for our technical agenda both internally and externally, and remain at the forefront of technological advancements in FinTech and wealth management.Develop Talent: Nurture the next generation of technical leaders and promote a culture of excellence in engineering and continuous improvement.Generate Impact: Contribute significantly to users' wealth growth and financial aspirations through your work on the Consumer Wealth back-end infrastructure, directly aligning with Satispay's mission.Prepare for challenges, collaboration, and the autonomy to bring your ideas to fruition. Our tech stack includes a diverse array of technologies, fostering an environment of innovation and creativity.

Note: This position requires relocation to our Milan office.About SatispaySatispay is on a transformative journey to simplify everyday payments, making them fair and accessible to everyone. Our mission is to redefine the future of money, empowering millions through collective action to address significant challenges. We're just getting started!As a member of our Core Team, you will engage with critical systems, managing external bank interactions, orchestrating payments, and establishing a robust infrastructure for Identity and Access Management (IAM). The team is also pivotal in risk management, focusing on credit risk and fraud detection.We operate with agility, bold thinking, and mutual trust, challenging conventions while learning and evolving. If you seek more than just a job—if you aspire to create meaningful impact with a talented team—you are in the right place.Your ResponsibilitiesIn your role as a Staff Software Engineer within the Core Team, you will play a critical part in shaping the foundation of our payment platform. You will work on mission-critical engines that power Satispay, ensuring reliability, consistency, and security for millions of users.Daily tasks will include:Define Technical Strategy: Establish the long-term technical vision for our critical domains and architect complex subsystems that serve as the foundation of the company, balancing cross-product requirements with the need for speed and reliability.Architect Core Financial Systems: Design and scale high-throughput engines responsible for the transaction ledger, payment orchestration, and external bank integrations, ensuring accurate and available

About VibeAt Vibe.co, we are revolutionizing the way brands connect with audiences in the streaming era. We envision that streaming TV transcends traditional brand awareness; it is poised to be the next major avenue for performance marketing. Our mission is to create the infrastructure that harnesses this $100 billion potential.As a leader in Audience First Streaming TV Advertising, Vibe.co empowers marketers to leverage TV as an effective growth channel. Our comprehensive solution integrates hyper-targeted audience segmentation, AI-driven insights, real-time campaign optimization, and incrementality measurement, providing brands of all sizes the accuracy and transparency they expect from social and search advertising, applied to the TV landscape.With over 10,000 trusted brands and a reach of more than 120 million households across 500+ apps and channels, Vibe.co consistently delivers an impressive average return on ad spend of 250% and a 20% lift in sales. Achieving a $100 million revenue run rate in less than two years, we are among the fastest software companies to reach this remarkable milestone.Our investors include notable firms such as Hedosophia (early backer of Spotify, Uber, and Airbnb), Elaia, Singular, QuantumLight, and Illusian, alongside angel investors like Carolyn Everson, board member of The Walt Disney Company and Coca-Cola. Nirav Tolia, CEO of Nextdoor, is also a member of our board of directors.Founded in 2022, Vibe.co is recognized as a pioneering platform in streaming TV advertising, merging the power of performance marketing akin to Meta and Google with the fast-evolving media landscape.About the RoleAs a key member of the Performance team, you will play a vital role in managing advertiser outcomes at Vibe. Your focus will be on bidding, pacing, and enhancing the prediction stack that drives these elements. You will report directly to Clément Schiano, Engineering Manager for Performance.This position has been created to address a clear roadmap and enhance execution capabilities, as well as to mitigate knowledge concentration challenges within the team. We seek an individual who can absorb, challenge, and expand upon existing expertise, going beyond simply delivering tickets.Three compelling reasons why a talented candidate would find this role appealing:

Join us in revolutionizing the shopping experience through AI-powered conversations.At Gorgias, we are pioneering a platform that transforms customer interactions into meaningful relationships. Our vision is to create a unified AI agent that assists, sells, and re-engages customers at every touchpoint in their journey. We believe that Conversational Commerce is the future of eCommerce, and we are at the forefront of this exciting shift.Our mission is to ensure that every brand interaction is personal, seamless, and intelligent. By merging our extensive product knowledge with cutting-edge AI technology, we aim to make the shopping experience feel increasingly intuitive and connected.To achieve this, we are committed to:Quality: Crafting authentic, brand-aligned conversations.Experience: Ensuring a smooth shopping journey from chat to checkout.Re-engagement: Fostering personal dialogues instead of intrusive marketing.With the rapid evolution of AI in retail, Gorgias is laying the groundwork for the next decade of eCommerce. We envision a future where every brand has its intelligent agent, and every customer feels valued and understood.Join us in making Conversational Commerce a reality.Team & ContextGorgias is an AI-first company dedicated to developing innovative products driven by large language models (LLMs) and agent-based systems. We are the leading conversational commerce platform for Shopify merchants. Our AI Journey team is focused on enhancing the marketing aspect of our vision with AI-driven outbound conversations that engage shoppers through various channels, primarily SMS.Our product is actively utilized by merchants today, processing hundreds of millions of shopper events. We are scaling our operations to enhance AI reliability at higher volumes, broaden our shopper engagement capabilities, and solidify our systems for robust production loads. The most intriguing challenges lie ahead.This role is positioned at the nexus of product engineering and applied AI, concentrating on the development of reliable, scalable, and impactful LLM-powered experiences in production.About the RoleIn this role, you will have the opportunity to: Develop and scale production AI features utilized by thousands of merchants. Engage directly with LLMs, prompts, and agent workflows within a live product setting. Influence the architecture of AI systems as we continuously enhance our platform.

About UsAt Yubo, we are revolutionizing the way individuals connect online through our innovative Social Discovery app. By removing likes and follows, we empower our users to form authentic relationships and express their true selves.We have pioneered a fresh approach for Generation Z to engage socially in the digital realm, currently serving millions of active users. Our mission is to continuously redefine how social connections are formed now and in the future.Our team is diverse, multicultural, and passionately dedicated to our vision. As a leading platform for online socialization, we prioritize creating a safe digital environment for our community. Safety is ingrained in our values, and we proactively work on user protection, support, and education, collaborating with the tech industry and NGOs to establish best-in-class child protection standards.Join us on this exciting journey and play a vital role in shaping the future of social interactions!Role OverviewAs we expand our Tech organization for 2026, Yubo is launching a new Innovate squad dedicated to daring product initiatives and high-stakes projects.This squad aims to take bold risks, experiment with ambitious features, and validate ideas through ongoing testing.We are seeking a Senior Backend Engineer to become a key member of our Backend Experience team, reporting directly to Armand, our Engineering Manager.You will work within a multi-disciplinary squad (including Product, Mobile, Design, and Data) alongside a Senior Backend Engineer who shares leadership responsibilities.Your mission? Design, implement, and manage high-risk backend experiments that test groundbreaking product ideas while ensuring our systems remain resilient, scalable, and cost-effective throughout rapid iteration cycles.This position is not about maintenance; it's focused on building, testing, rolling back, iterating, and learning swiftly.

About Us Safran.AI, formerly known as Preligens, is a subsidiary of Safran Electronics & Defense, specializing in artificial intelligence solutions for analyzing high-resolution satellite imagery, full motion video (FMV) streams, and acoustic signals. Our innovative solutions are implemented in the aerospace, defense, and governmental sectors. Since 2016, our company has been developing sophisticated algorithms and software that automatically analyze, detect, and identify military-relevant objects from both commercial and governmental data sources. Following our integration into Safran in September 2024, Safran.AI is also playing a pivotal role in the group’s transformation by applying AI solutions to Industry 4.0 sectors. For example, automated image analysis through AI aids inspectors in identifying potential anomalies in critical components from digital images. At Safran.AI, innovation and the creation of a safer world are at the core of our mission. By joining us, you will collaborate with passionate, multidisciplinary teams (engineers, researchers, developers) among the industry's most talented professionals, all driven by a shared commitment to technological excellence. We provide a stimulating work environment where creativity and initiative are encouraged, and every idea matters. Your Mission, Should You Choose to Accept It As part of Project Robin, an innovative solution for monitoring strategic sites via satellite imagery and AI, already in production with several clients, you will join a team of 7 developers. Together, you will focus on evolving various backend modules with strong scalability and modularization challenges (data pipeline, database, API, orchestration, deployment). Note: The ability to obtain a Defense clearance is mandatory for this position. As a Senior Software Engineer, you will play a central role in bringing your technical expertise to the design, development, and implementation of our complex software solutions. Your responsibilities will include:→ Maintaining and evolving web applications (Python/FastAPI and JavaScript/React).→ Designing, developing, and maintaining our backend infrastructure and automated pipelines (Python, Airflow, PostgreSQL).→ Collaborating closely with all teams and subject matter experts to understand end-user needs.

Join Mistral as a Backend Software Engineer and be part of a dynamic team that is shaping the future of cloud technology. In this role, you will be responsible for developing robust backend systems, ensuring seamless integration, and optimizing performance. Collaborate with cross-functional teams to deliver innovative solutions that meet our clients' needs.

Join the dynamic technical teams at iad Business Factory, where you will work under the guidance of an Engineering Manager. You will be part of a collaborative squad consisting of developers, Product Owners, Project Managers, Quality Assurance specialists, and designers, all focused on enhancing our Playiad application.Your role will involve developing innovative web-oriented projects as well as evolving and maintaining existing features in a continuous improvement mindset.You will be integrated into the Grow Squad within the MLM Tribe, responsible for core MLM model developments including sponsorship, onboarding, accreditation, real estate training, organizational dynamization (gamification), and genealogical evolution across various geographies. Your primary responsibilities will include:Developing based on concepts established by the technical management (Clean Architecture, TDD, DDD, BDD, etc.),Understanding the business needs of each user story (product culture),Ensuring high quality in deliverables through test-driven development,Engaging in self-directed learning and staying updated on technologies and best practices,Adopting a straightforward and pragmatic approach to development,Collaborating closely with your product family members,Ensuring the reliable operation of applications in production ("You build it, you run it"),Adhering to software craftsmanship principles and XP practices. Technical stack:Development: PHP, SymfonyDatabases: PostgreSQL, MySQLInfrastructure as Code: Terraform, AnsibleAWS: EC2/ECS, RDS/Aurora, Lambda/Step Functions, API GatewayCommunication systems: RabbitMQ, AWS SQS, SNSLinux environment, Shell scripting, Cron jobs, etc.CI/CD tools: GitHub, Docker, GitHub Actions, Jira, Confluence

Join Fabulous Co. as a Senior Backend Engineer specializing in NodeJS and contribute to our rapid growth in the health and wellness sector. In this startup-like environment, you’ll collaborate closely with our experienced CTO to develop cutting-edge features such as marketing optimization engines and billing reports. If you’re passionate about leveraging technology to help people cultivate healthy habits worldwide, we invite you to be part of our dynamic engineering team.

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.

Join us as our inaugural Software Engineer for User Safety Tooling at amo!About the PositionAs a pivotal member of our User Safety team, you will architect and implement systems designed to safeguard our users, facilitate data collection, and ensure adherence to global regulations. You will become part of a dynamic and agile team that encourages creativity and innovation in developing impactful safety tools.At amo, we are dedicated to creating social applications that connect friends, and prioritizing user safety is integral to our mission. Collaborating with our User Safety lead, you will help construct the foundational infrastructure that keeps our community secure.Your ResponsibilitiesDesign and develop highly scalable, efficient, and resilient trust and safety platforms and tools, including data tracking pipelines.Enhance systems for improved data collection, compliance, and safety procedures.Develop APIs and integrate with third-party services.Create intelligent workflows to automate complex decision-making processes.Align product objectives with user-friendly platform development that meets operational requirements.Ensure uninterrupted safety services that can scale with our growing user base.About YouRequired QualificationsMinimum of 5 years experience in trust and safety tooling or content moderation systems.Strong proficiency in designing data structures, developing algorithms, and expertise in at least one programming language (Go, Kotlin, C, or C++).Excellent communication skills and a collaborative mindset.A demonstrated passion for user safety, human and AI moderation, and operational efficacy.Preferred QualificationsExperience with web development and frontend technologies.Familiarity with online safety regulatory requirements (DSA, etc.).Experience with machine learning models and data pipelines.Life at amoWe believe in setting our team up for success through collaboration, which is why we work together onsite five days a week.

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 UsAt Harmattan AI, we are pioneering the development of autonomous and scalable defense systems. With a recent $200 million Series B funding round that has raised our valuation to $1.4 billion, we are poised for growth and are seeking talented individuals to join our mission of delivering cutting-edge systems to allied forces.Our guiding principles are centered around creating impactful technologies, striving for excellence, setting ambitious objectives, and confronting complex technical challenges head-on. We thrive in a dynamic environment where accountability, precision, and execution are critical.About the RoleWe invite a passionate Backend Software Engineer to become a vital part of our C2 Core team in Paris. In this role, you will be instrumental in developing the foundational architecture for our advanced tactical Command and Control (C2) application. You will operate in a high-stakes, technical environment where low latency, high availability, and secure data management are crucial.Your primary responsibilities will involve ensuring seamless data flow for real-time telemetry, high-bandwidth video streams, and mission commands between our fleet of robots and the internal C2 components, including the Common Operational Picture (COP) and Mission Planner. This system is designed for deployment on ruggedized tactical PCs in field environments often characterized by limited network connectivity.

Role Overview JobTeaser is hiring a Senior Backend Engineer with strong Ruby experience to join the team in Paris. This role focuses on building and maintaining scalable backend systems that support our platform. What You Will Do Design, develop, and maintain backend solutions using Ruby Work with cross-functional teams to deliver reliable features and improvements Write high-quality code that supports a strong user experience Location This position is based in Paris.

Join Our Team as a Compliance Officer (Investment Products)Note: This position requires relocation to our Luxembourg office.About SatispaySatispay is on a mission to transform everyday transactions by making them simple, fair, and accessible to everyone. Our vision extends beyond payments; we are committed to shaping the future of finance.We are a dynamic movement empowering millions, united by a common goal to address significant challenges. We operate swiftly, think innovatively, and foster an environment of trust and collaboration, encouraging growth and learning.If you're seeking more than just a job and want to contribute to impactful initiatives alongside a talented team, your journey starts here.Key ResponsibilitiesCompliance Framework - Collaborate with the Head of Compliance to implement and uphold a robust Compliance Monitoring Programme, ensuring adherence to all regulations. Conduct second-line of defense controls, identify weaknesses, and provide actionable recommendations.Risk Management - Assess and mitigate compliance risks associated with existing and new investment products, particularly in relation to crypto-assets. Assist in managing compliance incidents effectively.Horizon Scanning and Advisory - Keep abreast of regulatory changes and advise management and product teams on their implications for the business.Regulatory Strategy & Licensing - Contribute to the development of our regulatory strategy and support licensing processes for future initiatives.Policy and Procedures Framework - Aid in drafting, updating, and maintaining compliance policies to align with evolving regulations.Regulatory Reporting - Ensure timely and accurate regulatory reporting, including the CSSF annual questionnaire on financial crime.Engagement with Regulators and Auditors - Facilitate interactions with regulators regarding investment services, inspections, and periodic updates.

About Satispay Satispay is working to make everyday transactions simple, fair, and accessible. The team focuses on building tools that help millions handle financial challenges together. The company values bold ideas, fast execution, and mutual trust, encouraging everyone to question norms and keep learning. Location Requirement This role requires relocation to the Luxembourg office. Role Overview: MiFID/MiCA Compliance Expert The MiFID/MiCA Compliance Expert acts as a key subject matter expert within Satispay's investment firm. The main focus is ensuring compliance with MiFID II, MiCA, and all relevant regulations across investment products and services. Main Responsibilities Compliance and Risk Management Framework Work with the Head of Compliance to build and maintain a Compliance Monitoring Programme that supports regulatory adherence. Conduct second-line defense controls, identify risks related to current and future investment products, and provide actionable recommendations. Monitor regulatory changes and translate them into practical business strategies. Help maintain a comprehensive policy framework. Support processes for future license extensions and contribute to shaping the regulatory roadmap as the business expands. Trusted Advisor – Work closely with Authorized Management and Product teams to provide guidance on business impacts and product development. Reporting – Help prepare regular compliance reports for Authorized Management and the Board of Directors. Ensure timely and accurate regulatory reporting, including the CSSF annual questionnaire on financial crime. Who Thrives Here This position suits someone ready to play a central role in regulatory compliance, who enjoys close collaboration with leadership and product teams, and is comfortable adapting to evolving requirements as Satispay grows.

About UpflowUpflow is a pioneering SaaS startup specializing in advanced cash collection technology designed to help B2B companies streamline their payment processes and get paid more efficiently.Founded in 2018, we have quickly gained the trust of hundreds of businesses across the US and EMEA, partnering with notable clients such as Lattice, ProductBoard, and Instawork. Our growth has been fueled by leading investors including YCombinator, eFounders, and prominent business angels from companies like N26, Square, Mercury, Uber, and NetSuite.Join us for an exciting opportunity to work within a rapidly evolving Fintech landscape in a diverse and international setting.To learn more about our team and culture, please visit our careers page at www.upflow.io/careersAbout the RoleAs a Senior Backend Engineer, you will be part of a compact and dynamic team based in Paris or working remotely, dedicated to developing impactful features for our users. Your responsibilities will encompass a variety of areas, including integrations with third-party financial systems like ERPs and billing tools, real-time data synchronization for millions of financial transactions, and managing our REST API. We prioritize data accuracy and reliability at scale, ensuring seamless financial data exchange between systems.We embrace continuous deployment (averaging 10 deployments per day) and foster a culture of pragmatism, ownership, and a growth mindset.For insights into our engineering practices, refer to this article.Your ResponsibilitiesIn your role at Upflow, you will:Design and implement complex, high-impact features from inception to completion.Work closely with the product manager and fellow engineers to convert business needs into technical solutions.Deploy clean, maintainable code to production on a daily basis.Engage in code reviews, offering and receiving constructive feedback.Diagnose and resolve intricate data and product challenges.Optimize application performance and scalability.