Backend Engineer

Since 1993, the company has expanded from listings into payments, shipping and seller financing. We ship small changes daily rather than big quarterly releases.

Job summary:

We are backfilling a position after an internal move. You'll work mostly on server-side code: services, queues, databases and the glue between them. Little to no frontend work. Fully remote. You can work from anywhere in Spain. Normal business hours, Monday to Friday, with some flexibility. Good written English matters here, since most updates are written.

Essential duties and responsibilities:

Add caching with Redis where it actually helps, and remove it where it doesn't. Handle on-call for services the team owns and lead incident follow-ups. Design and build REST and gRPC APIs in Go, Java or Python. Review code for correctness, performance and failure handling. Containerize services with Docker and deploy them to Kubernetes or ECS.

Minimum qualifications:

2-4 years of backend development experience in a production environment. Understanding of concurrency, transactions, idempotency and retries. Strong SQL and relational data modelling skills. Proficiency in at least one of Go, Java, Kotlin, Python, C# or Node.js. Working knowledge of message queues or streaming platforms. Clear written communication, including design docs. Hands-on experience with AWS, GCP or Azure services.

Nice to have:

Elasticsearch or OpenSearch. Kubernetes, including Helm charts.

Compensation and benefits:

Private health insurance. Life insurance. Training budget. Flexible start and finish times.

Please include your notice period and salary expectations.

The posting will close once we have a strong shortlist.

Start: Immediately.

Demo job created on 11jobs for testing and demonstrations. It is not an actual opening at Keyway Apps S.L..