Backend DevOps Engineer

airapps is hiring a Backend DevOps Engineer in Paris. This position centers on building and maintaining systems that keep backend services running smoothly and reliably. Role overview The Backend DevOps Engineer will design and implement solutions to help backend services scale and remain dependable. Collaboration with both development and operations teams i…

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.

About VoodooEstablished in 2013, Voodoo is a leading technology company dedicated to developing mobile games and applications that entertain users globally. With a diverse team of 800 employees, our impressive portfolio boasts 7 billion downloads and over 200 million active users, making Voodoo the third-largest mobile publisher worldwide, following Google and Meta. We are proud to showcase hit games like Mob Control and Block Jam, as well as popular apps such as BeReal and Wizz.TeamOur Growth team serves as a dynamic unit focused on maximizing the potential of our mobile products. This team merges expertise in user acquisition, creative content development, monetization strategies, and advanced technology to transform applications into global success stories. With over 150 specialists, we are at the cutting edge of mobile marketing and ad technology, across a wide variety of games and consumer applications.RoleWe are seeking a Strategy & Operations Manager to join our Ad Monetization team. In this role, you will engage with revenue-critical initiatives, utilizing strategic insights, data analytics, and operational execution to enhance performance across millions of daily users. This position is perfect for individuals with a consulting or analytical background looking to transition from advisory roles to managing a multi-hundred-million-euro revenue stream.Drive Revenue PerformanceOversee ad monetization performance across a diverse portfolio of games and applications.Conduct in-depth analysis of revenue drivers such as ARPDAU, fill rate, eCPM, LTV, and ad engagement metrics.Identify and implement structural improvements across waterfall configurations, in-app bidding, pricing strategies, and demand diversification.Transform analytical findings into actionable strategies that yield measurable revenue impact.Optimize the Ad Tech StackCollaborate closely with engineering teams to enhance mediation setups, experimentation frameworks, and auction dynamics.Design and lead A/B tests to maximize yield and enhance long-term LTV.Evaluate and incorporate new ad networks, bidding partners, and monetization formats.Proactively anticipate shifts in the ecosystem regarding privacy, platform policies, and auction mechanics.Lead High-Impact ProjectsDeconstruct complex ad monetization challenges into actionable workstreams.Collaborate with product, user acquisition, data, and creative teams to ensure alignment in ad monetization efforts.

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.

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 common goal to address significant challenges. Our journey is just beginning. We are rapid in our actions, bold in our ideas, and foster a culture of mutual trust and continuous learning.If you seek more than just a job and wish to make a lasting impact alongside a talented team, you’ve come to the right place.Key ResponsibilitiesAs a Senior Backend Software Engineer within our Business Team, you will be instrumental in revolutionizing digital welfare payments - managing everything from employer benefits to intricate product solutions. You will enhance the complete experience for both employers and employees, ensuring sustained satisfaction. Your role will encompass technical leadership, quality assurance, and the delivery of complex systems that enable thousands of employers to effectively manage their corporate welfare solutions. Here’s what your typical day will include:Design Multi-Service Solutions: Undertake technical assessments for medium to large-scale projects impacting various services in the Employer domain. You will architect robust, highly-available solutions with a focus on scalability, security, and maintainability that are core to our welfare products.Maintain Technical Quality: Implement comprehensive testing strategies that balance automation and manual efforts, overseeing gradual rollouts with meticulous monitoring to ensure that welfare distributions remain accurate and dependable.Proactively Resolve Challenges: Anticipate and address technical obstacles, fostering knowledge sharing across the organization. You will navigate the unique complexities of B2B registration processes and high-volume benefit distributions while ensuring code quality through diligent reviews.Ownership and Execution: Take full ownership of your projects from inception to completion, delivering functionalities that genuinely cater to user requirements - from the moment an employer registers to the moment an employee utilizes their welfare benefits through seamless backend integration.

About the Role Shift Technology is looking for a Junior Backend Engineer with C# experience to join the team in Paris, France. This role focuses on building and maintaining backend systems that power the company's products. Work closely with seasoned engineers and contribute to projects that shape Shift Technology's technical direction. What You Will Do Develop and support backend components using C# Help maintain and improve existing systems Collaborate with other engineers on technical projects Location Based in Paris, France.

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.

BlaBlaCar’s Carpool Supply team in Paris works on the systems at the heart of the company’s carpooling platform. As a Backend Engineer here, the work shapes how people arrange and share rides, influencing the experience for both drivers and passengers. Role overview This position centers on developing and refining backend services that support carpooling features. The team’s efforts help ensure the platform remains reliable and easy to use as it grows. What you will do Design, build, and maintain backend services for carpooling Create solutions aimed at improving the experience for drivers and passengers Work closely with engineers and product teams to deliver systems that scale and perform reliably Location This role is based in Paris, France.

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.

Join adaptive-ml as a Backend Engineer specializing in database management and development. In this pivotal role, you will be responsible for designing, implementing, and maintaining robust backend systems that support our advanced machine learning applications. You will collaborate closely with cross-functional teams to optimize database performance, ensure data integrity, and enhance overall system functionality.

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.

BlaBlaCar’s Payment Squad is seeking a Backend Engineer based in Paris. This team plays a key role in building and enhancing the systems that process payments throughout the platform. The work ensures millions of users can complete transactions smoothly and reliably. Main responsibilities Design, develop, and maintain backend services for payment processing Collaborate with fellow engineers to create scalable technical solutions Contribute to making transactions more reliable and efficient for users Team collaboration This role involves close teamwork with experienced colleagues. Sharing ideas and tackling technical challenges together is a regular part of building and improving payment features at BlaBlaCar.

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

We are seeking a dynamic and innovative Head of Product for Retail Media & Data Monetization to join our team at Vusion Group SA in Paris. In this pivotal role, you will lead our product strategy and execution, focusing on leveraging data to maximize revenue opportunities in the retail media space. You will work closely with cross-functional teams to define product vision, roadmap, and features, ensuring alignment with business objectives.

About Us Safran.AI, previously known as Preligens, is a subsidiary of Safran Electronics & Defense, offering cutting-edge artificial intelligence solutions for analyzing high-resolution satellite images, full motion video (FMV) streams, and acoustic signals. Our innovative technologies are employed across aerospace, defense, and government applications. Since our inception in 2016, we have developed complex algorithms and software that automatically analyze, detect, and identify military-relevant objects from commercial and government data. Joining Safran in September 2024, Safran.AI also plays a pivotal role in the group's transformation, applying AI solutions in the realm of Industry 4.0. For instance, our automated image analysis capabilities assist inspectors in identifying potential anomalies in critical components using digital imagery. At Safran.AI, innovation and the pursuit of a safer world are at the heart of our mission. By joining us, you will work alongside passionate, multidisciplinary teams (engineers, researchers, developers) who are among the most talented in the industry, all driven by a shared commitment to technological excellence. We foster a stimulating work environment that encourages creativity and initiative, where every idea is valued.

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.

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 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 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.