Junior Backend Developer (Payments)

We run a marketplace with over 300,000 active sellers and fulfillment centres in four regions. We started in 2008 and have grown to about 890 people.

Job summary:

Walsh Digital is looking for a Junior Backend Developer (Payments) to join a small, steady team. We want someone who writes boring, reliable code and leaves good logs behind. Fully remote. You can work from anywhere in Ireland. We keep meetings to a minimum and work mostly async. You will write a lot of updates, so clear written English is important.

Responsibilities:

• Reduce cloud costs by right-sizing services and cleaning up unused resources.
• Review code for correctness, performance and failure handling.
• Containerize services with Docker and deploy them to Kubernetes or ECS.
• Add caching with Redis where it actually helps, and remove it where it doesn't.
• Coordinate with frontend and mobile engineers on API contracts and versioning.
• Design and build REST and gRPC APIs in Go, Java or Python.
• Document APIs in OpenAPI and keep the docs current.

Minimum qualifications:

• 1-2 years of backend development experience in a production environment.
• Working knowledge of message queues or streaming platforms.
• Comfort reading logs, metrics and traces to debug problems in production.
• Familiarity with Docker and CI/CD pipelines.
• Understanding of concurrency, transactions, idempotency and retries.
• Experience designing and versioning HTTP APIs.

Nice to have:

• Kubernetes, including Helm charts.
• NoSQL stores such as MongoDB, Cassandra or DynamoDB.

Benefits:

• Health insurance for you and your family.
• Company pension scheme.
• 25 days annual leave.

Successful applicants will be contacted within a week of the closing date.

You must have the right to work in Ireland.

Start: Immediately.

Demo job created on 11jobs for testing and demonstrations. It is not an actual opening at Walsh Digital.