Digital IC Backend Design Engineer at Arago | Paris

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 exp…

At Arago, we welcome spontaneous applications year-round.If you're uncertain about the best fit for your skills within our dynamic team, feel free to submit your application. Our team will review your profile with great interest.Introducing Arago and the AragoniansArago is a pioneering company at the forefront of AI and computer hardware innovation, dedicated to shaping the future by accelerating advancements at the crossroads of artificial intelligence and semiconductor technology.Founded in 2024 by a diverse group of AI researchers and physicists, our team possesses extensive expertise in photonics, electronics, software development, mathematics, and machine learning. We pride ourselves on assembling a talented and agile group of engineers and scientists from leading firms and prestigious research institutions.Comprising nine nationalities and operating from key hubs in France, North America, and Israel, we are driven by our commitment to exceptional science and swift, impactful results. Our core principles guide our work:Pursue Excellence: We strive to deliver work that we are proud of.Speed is Key: We act quickly and decisively.Unity in Purpose: We collaborate as a cohesive unit, fostering relationships built on trust and camaraderie.Arago is backed by an impressive network of executives from industry giants such as Apple, Arm, Nvidia, Microsoft, and Hugging Face, along with prominent deep-tech venture firms in the US and Europe.

Join the Arago TeamArago is at the forefront of innovation in AI and computer hardware, dedicated to advancing technology and shaping the future. Our mission is to catalyze breakthroughs at the intersection of artificial intelligence and semiconductor technology.Established in 2024 by leading AI researchers and physicists specializing in photonics, electronics, software, mathematics, and machine learning, Arago consists of a dynamic team of engineers and scientists sourced from prestigious companies and research institutions around the globe.With a diverse team representing nine nationalities and operational hubs in France, North America, and Israel, we thrive on exceptional science and rapid progress. Our guiding principles include:Deliver Excellence: We take pride in the quality of our work.Agility: We prioritize speed and efficiency in our processes.Team Synergy: We foster a collaborative environment built on trust and respect.Our esteemed team is supported by executives from industry giants such as Apple, Arm, Nvidia, Microsoft, and Hugging Face, alongside influential deeptech venture capitalists and successful founders.

Join Arago and the Team of InnovatorsArago is at the forefront of AI and computer hardware innovation, with a mission to shape the future by driving significant advancements at the intersection of artificial intelligence and semiconductor technologies.Founded in 2024 by a team of AI researchers and physicists with profound expertise in photonics, electronics, software, mathematics, and machine learning, Arago unites a talented group of engineers and scientists drawn from the world’s leading companies and research institutions.With a diverse workforce representing nine nationalities and operating from strategic hubs in France, North America, and Israel, we are committed to exceptional science and rapid progress. Our work is anchored in core principles such as:Achieve Excellence: We take pride in delivering work that reflects our highest standards.Speed of Execution: We prioritize agility in our processes, advancing steadily and swiftly.Team Unity: We foster a collaborative environment grounded in trust, respect, and camaraderie.Arago is supported by seasoned executives from industry giants like Apple, Arm, Nvidia, Microsoft, and Hugging Face, along with esteemed deeptech venture capital firms from the US and Europe.

Join the Arago TeamArago is a pioneering AI and semiconductor company dedicated to shaping the future of technology. Our mission is to accelerate advancements at the convergence of artificial intelligence and semiconductor technology.Established in 2024 by a group of AI researchers and physicists with extensive knowledge in photonics, electronics, software engineering, mathematics, and machine learning, Arago unites a dynamic team of engineers and scientists from leading global firms and research institutions.With a diverse workforce representing nine nationalities and operational hubs in France, North America, and Israel, we thrive on the principles of exceptional science and rapid progress. Our core values include:Achieve Greatness: We are committed to delivering work that we are proud of.Swift Execution: We prioritize speed and efficiency in our operations.Team Unity: We work collaboratively, fostering relationships built on trust and respect.Arago is supported by seasoned executives from Apple, Arm, Nvidia, Microsoft, and Hugging Face, along with esteemed deeptech venture capital firms in the US and Europe.

Join arago as an Electronics Engineer and become a pivotal part of our innovative team in Paris. We are looking for a passionate individual who is eager to design, develop, and implement cutting-edge electronic systems. Collaborate with cross-functional teams to bring groundbreaking products to market and make a significant impact in the field of electronics.

Join the Innovators at AragoArago is a pioneering company at the forefront of artificial intelligence and semiconductor technology, dedicated to advancing the future through groundbreaking innovations.Established in 2024 by a team of visionary AI researchers and physicists, Arago harnesses expertise in photonics, electronics, software, mathematics, and machine learning. Our nimble team consists of talented engineers and scientists from leading global institutions.With a multicultural team representing nine nationalities, we operate from key hubs in France, North America, and Israel. We are passionate about exceptional science and rapid progress, guided by principles that define our culture:Deliver Excellence: We take pride in our work, ensuring it meets the highest standards.Speed of Execution: We value quick, decisive actions, progressing efficiently to achieve our goals.Collaborative Spirit: We work as one cohesive unit, fostering relationships built on trust and respect.Supported by leaders from major tech companies such as Apple, Arm, Nvidia, Microsoft, and Hugging Face, along with esteemed venture firms, Arago is poised to redefine the future of technology.

Join arago as an Office and Facility Manager and play a pivotal role in creating a productive and efficient work environment. Your responsibilities will include overseeing facility operations, ensuring compliance with safety regulations, and managing office supplies and services. You will collaborate with various departments to optimize space utilization and enhance employee satisfaction.

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 LuoPayLuoPay is a rapidly expanding financial exchange (FX) and cross-border payment platform headquartered in Africa. We empower African businesses to settle payments with their international suppliers more swiftly, transparently, and competitively than conventional methods.Having swiftly established our brand in several markets, we are eager to expand our engineering team and continue enhancing the financial infrastructure for FX and cross-border payments across Africa.Role OverviewAs a Senior Backend Engineer, you will collaborate with a skilled team of engineers to develop a wide array of customer-facing products, internal tools, and financial systems. Your contributions will be pivotal in maintaining and enhancing a payment infrastructure that handles millions of euros in transactions daily.Key ResponsibilitiesDesign and implement production-grade HTTP APIs using Golang.Create API integrations with fintech partners.Influence architectural decisions.Establish CI/CD pipelines.Deploy resources and services on Google Cloud Platform.Implement best practices for Site Reliability Engineering (SRE) and security.Conduct comprehensive testing.Utilize AI-driven development methodologies.What We Are Looking ForA minimum of 6 years of backend development experience.Extensive knowledge of Golang.Proficient in working with SQL databases.Experience in managing infrastructure on Google Cloud Platform or other cloud services.Ability to thrive in a fast-paced team environment.Familiarity with large language model (LLM) driven development.Systems Developed at LuoPayA payment platform tailored for businesses in Africa.Internal tools for payment operators, treasury analysts, and FX traders.AI applications for OCR and invoice approval.KYC onboarding processes.Anti-Money Laundering and Transaction Monitoring systems.Core Banking and Ledger Systems.Automated payouts with banking partners.

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.

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 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.

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.