Senior Node.JS Developer

apreel was founded in April 2010 by friends who dreamed of creating their own software house. Over time, the company expanded its services to include IT expert leasing, which now constitutes the main pillar of apreel's business. The founders continue to focus on creating proprietary IT solutions and continuously improving them.

• 5+ years Node.js in production, 3+ years NestJS
• Strong TypeScript skills including strict mode, generics, type narrowing, no any-as-escape-hatch
• Deep knowledge of NestJS modules, providers, DI scope, guards, interceptors, pipes, custom decorators
• Experience with REST API design at scale and familiarity with BFF / API-gateway patterns
• Comfort with GraphQL or schema federation (not required as primary stack)
• MongoDB production experience including Mongoose or native driver, schema design, indexing
• Auth0 integration experience for user authentication flows and Machine-to-Machine (M2M) client credentials
• AWS production experience with ECS or EKS, IAM, VPC, RDS, ElastiCache
• CI/CD experience using GitHub Actions
• Experience with distributed tracing and structured logging in production environments
• Comfortable writing tests (Jest) and improving coverage on legacy code
• 5 years experience in a similar position
• Knowledge of NestJS, Node.js, TypeScript
• Language skills: Polish (expert), English (advanced)

First 90 days:

• Read and document the existing BFF codebase alongside the outgoing engineering team
• Produce a quality baseline: test coverage, TypeScript strictness, lint compliance, dependency freshness, CI duration, flake rate
• Lead the knowledge-transfer sessions for the BFF service from the client's team
• Identify the highest-risk subsystems and propose stabilisation plans
• Set the squad's code-review standards, branching model, and definition of done

Ongoing:

• Own architecture decisions for the BFF service
• Lead design reviews for new endpoints, especially the AI integration surface
• Pair with mid-level engineers and review their work
• Represent the BFF squad in cross-team architecture discussions
• Participate in on-call rotation once production ownership is taken