About the Position

We’re looking for a senior backend developer who genuinely enjoys building things that work - cleanly, reliably, and at scale. You’ll lead server-side development across web applications and SaaS platforms, owning everything from the data model to the deployment. We work in small teams, which means real ownership and real impact.

Responsibilities

Design and implement REST API endpoints following clean architecture principles
Build and maintain data models, migrations, and database schema
Implement complex business logic in dedicated service layers
Configure authentication, authorization, queues, notifications, and scheduled tasks
Write and maintain automated tests (unit and feature level)
Produce and maintain API documentation (Swagger / OpenAPI or Postman collections)
Set up and maintain deployments on cloud platforms
Manage caching and session layers
Implement real-time features where required
Participate in sprint planning and code reviews

Requirements

Personalità

You write code you’d be happy to explain to anyone on the team
You care about doing things right, but you’re pragmatic about trade-offs
You communicate clearly about blockers, estimates, and decisions
You’re autonomous and don’t need hand-holding to get things done
You’re curious about new patterns and tools, but you don’t chase trends for the sake of it

Esperienza

5+ years of backend development experience
Deep knowledge of at least one major server-side framework (e.g. Laravel, Node.js/Express, Django)
Strong SQL skills - query optimization, indexing, migrations
Experience with caching and queue systems (e.g. Redis)
Solid understanding of REST API design and authentication patterns (tokens, OAuth)
Experience writing and maintaining automated tests
Comfortable producing API documentation for frontend and external consumers

Nice to Have

Experience with full-stack frameworks that bridge backend and frontend (e.g. Inertia.js)
Knowledge of WebSocket / real-time server implementations
Exposure to multi-tenant architecture patterns
Familiarity with CI/CD pipelines

Education

Bachelor’s or Master’s degree in Computer Science, Software Engineering, or equivalent practical experience
Relevant framework or cloud certifications are a plus
Fluent in English; French is a plus

Position

Location: Morges, Svizzera
Type of Engagement: Remoto
Department: KJ. Tech Engineering

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Backend Developer

Job description