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Senior Node.JS Developer
Job in
Town of Poland, Jamestown, Chautauqua County, New York, 14701, USA
Listed on 2026-07-01
Listing for:
HeadHR
Full Time
position Listed on 2026-07-01
Job specializations:
-
Software Development
Backend Developer, Node.js
Job Description & How to Apply Below
Role summary
As Senior Node Engineer You partner with the engagement Tech Lead on architecture, you set the bar on code quality, you mentor mid-level engineers as the squad grows, and you take direct ownership of the gateway service after the knowledge-transfer period closes.
Whatyou'lldo First 90 days- Read and document the existing BFF codebase alongside the outgoing engineering team
- Produce a quality baseline: test coverage, Type Script 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 proposestabilisationplans
- Set the squad's code-review standards, branching model, and definition of done
- 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 we take production ownership
We are partnering with a US-based health-tech company on the takeover of a production AI-powered mobile coaching platform. The platform serves real users today via iOS + Android apps and a microservices backend on AWS. You will join the Polish team responsible for the platform's Backend-for-Frontend (BFF) and supporting Node services as they transition from the original engineering team to ours.
Must-haveskills
- 5+ years Node.js in production, 3+ yearsNestJS
- Strong Type Script — strict mode, generics, type narrowing,no any-as-escape-hatch
- NestJSdepth: modules, providers, DI scope, guards, interceptors, pipes, custom decorators
- REST API design at scale; familiarity with BFF / API-gateway patterns
- GraphQLor schema federation comfort (not required to be primary stack)
- MongoDB in production — Mongoose or native driver, schema design, indexing
- Auth0 integration — both user authentication flows and Machine-to-Machine (M2M) client credentials
- AWS production experience — ECS or EKS, IAM, VPC, RDS,Elasti Cache
- CI/CD on Git Hub Actions
- Distributed tracing and structured logging in production environments
- Comfortable writing tests (Jest) and raising coverage on legacy code
Position Requirements
10+ Years
work experience
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