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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Backend Engineer - **Company:** Yubo - **Location:** Paris, France (Remote available) - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Software Quality, Code Review, Relational Databases, Node.Js, NoSQL, RabbitMQ, TypeScript, Datadog, Grafana, Backend, Event Driven Architecture, Apache Kafka - **Published:** September 5, 2026 - **Apply:** https://startup.jobs/senior-backend-engineer-innovate-yubo-8357989 ## About the Role * You have 5+ years of backend experience, ideally in startup/scale-up environments. * You are proficient in Node.js and TypeScript. * You have solid experience designing APIs (performance, security, observability). * You have worked with event-driven systems (Kafka, RabbitMQ, NATS). * You apply strong engineering best practices (testing, code quality, resilience). * You have a product mindset and enjoy collaborating closely with Product. * You communicate clearly and can explain complex technical topics to non-technical stakeholders. * You are comfortable working in English in an international environment. Nice to have: * Experience in scalable architecture design. * Experience mentoring peers. * Familiarity with RFC-style structured decision-making. In your first 6 months, you will * Ship at least one high-risk, country-scoped backend experiment end-to-end, including safe rollout/rollback and measurable success metrics * Establish lightweight, reusable experimentation patterns (instrumentation, dashboards, operability guardrails). * Improve one systemic area revealed by experiments (reliability, performance, or internal usability) and drive measurable impact * Increase the squad's ability to test bold ideas without compromising platform stability. ## Description We're looking for a Senior Backend Engineer to join our Backend Experience team, reporting directly to Armand (Engineering Manager). You will be embedded in a multi-disciplinary squad (Product, Mobile, Design, Data) alongside one Senior Backend Engineer, co-lead of the squad. Your role? Design, ship, and operate high-risk backend experiments that validate bold product bets, while keeping systems resilient, scalable, and cost-efficient within a fast iteration cycle. This is not a "maintenance" role. It's about building, testing, rolling back, iterating and learning fast., * Build resilient, scalable, and cost-efficient systems adapted to high-risk experimentation. * Diagnose and fix complex production issues using logs, metrics, and observability tools. * Anticipate operational impact (deployment, rollback, monitoring, cost). Standards & Knowledge Sharing * Strengthen team-level best practices and reusable patterns. * Contribute to documentation, RFCs, and internal usability of squad-owned systems. * Mentor peers through code reviews and pairing (mentorship is a plus, not mandatory). Our technical environment / Tools we use * Backend: Node.js & TypeScript * Architecture: Event-driven systems (Kafka, RabbitMQ, NATS) * Databases: NoSQL, key-value stores, relational databases * Observability: Datadog, Grafana * Practices: RFC processes, technical specs, structured decision-making ## Related Videos - [Software Engineering Social Connection: Yubo’s lean approach to scaling an 80M-user infrastructure](https://www.wearedevelopers.com/videos/1583-software-engineering-social-connection-yubo-s-lean-approach-to-scaling-an-80m-user-infrastructure) - [Debugging in the Dark](https://www.wearedevelopers.com/videos/1658-debugging-in-the-dark) - [Stop using Node.js like in 2020! What changed and what you can do today with Node.js](https://www.wearedevelopers.com/videos/100011-stop-using-node-js-like-in-2020-what-changed-and-what-you-can-do-today-with-node-js) - [Leveraging Real time data in FSIs](https://www.wearedevelopers.com/videos/806-leveraging-real-time-data-in-fsis) - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) - [Stop Using Node.js Like It’s 2020! - Alfonso Graziano](https://www.wearedevelopers.com/videos/1863-stop-using-node-js-like-it-s-2020-alfonso-graziano) ## Related Articles - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers) - [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs) - [What’s the Difference Between Frontend and Backend Development?](https://www.wearedevelopers.com/magazine/240-what-s-the-difference-between-frontend-and-backend-development) - [The 7 Most Popular Backend Frameworks for Developers](https://www.wearedevelopers.com/magazine/403-the-7-most-popular-backend-frameworks-for-developers) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs)