Senior Backend Developer

Opalkeep employs 25,800 people across engineering hubs in Sofia and three other locations, building ERP software for mid-market manufacturers.

Job summary:

Opalkeep is hiring a Senior Backend Developer to work remotely from India. The Payments team owns services that process several million requests a day. We need another engineer who is comfortable owning them in production. The company is based in Sofia, Bulgaria. The team is spread across multiple countries. We hire in India through an employer of record, so this is a regular full-time job with local payroll and statutory benefits. Core hours are 10:00 to 15:00 CET. Most communication happens in Slack, with short video calls when needed.

Day to day:

• Containerize services with Docker and deploy them to Kubernetes or ECS.
• Tune slow queries, add indexes and read query plans.
• Document APIs in OpenAPI and keep the docs current.
• Secure endpoints with OAuth 2.0, JWT validation and proper input checks.
• Coordinate with frontend and mobile engineers on API contracts and versioning.
• Design and build REST and gRPC APIs in Go, Java or Python.
• Instrument services with metrics, structured logs and OpenTelemetry traces.
• Handle on-call for services the team owns and lead incident follow-ups.

Required qualifications:

• 7+ years of backend development experience in a production environment.
• Strong SQL and relational data modelling skills.
• Experience designing and versioning HTTP APIs.
• Working knowledge of message queues or streaming platforms.
• Familiarity with Docker and CI/CD pipelines.
• Clear written communication, including design docs.

Preferred qualifications:

• Prior work breaking up a monolith.
• Kubernetes, including Helm charts.

₹43,00,000 - ₹59,00,000 pa

Benefits:

• Annual team retreat.
• 24 days paid time off.
• Health insurance through our employer-of-record partner.
• Annual salary review.
• Co-working space stipend.

We may close this posting early once we have enough applications.

Start: Immediately.

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