> Markdown version of [/jobs/ext/4005472-senior-backend-engineer-innovate](https://www.wearedevelopers.com/jobs/ext/4005472-senior-backend-engineer-innovate). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Senior Backend Engineer (Innovate)

- **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:** October 29, 2026
- **Apply:** https://www.welcometothejungle.com/en/companies/yubo/jobs/senior-backend-engineer-innovate_paris

## 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