Informacje o stanowisku

technologies-expected :

• Node.js
• TypeScript
• Fastify
• Swagger
• OpenAPI
• Docker

• You’ll build a production-grade connector service between two SaaS APIs using our Node.js + TypeScript + Fastify service template. The template provides Fastify app scaffolding, type-safe config, dependency injection with Awilix and a custom wrapper, OpenTelemetry tracing/metrics hooks, OpenAPI (Swagger) docs site, Docker/Docker Compose, and a Vitest testing setup.

• Implement auth flows (OAuth2/API key), token storage/refresh, least-privilege scopes.
• Build type-safe mappers between API models; validate requests/responses with schema guards.
• Implement webhook ingestion with HMAC-SHA256 signature verification and replay protection.
• Ensure idempotency and safe retries for outbound calls (exponential backoff + jitter; respect Retry-After; handle 429/5xx).
• Add observability: request/correlation IDs, traces, and key business metrics (events processed, retries, dedupes).
• Ship tests (unit/integration/e2e using Vitest and Fastify’s inject) and harden error handling.
• Produce handover: runbook, env/setup steps, API mapping spec, and error taxonomy.

• 5+ years building production services in Node.js + TypeScript; comfort with Fastify or similar frameworks.
• SaaS integrations: designing connectors/plugins between APIs (auth, data mapping, pagination, rate limits, idempotency, webhooks).
• Webhooks security: implementing HMAC verification against raw request bodies and timestamps.
• Quality & Ops: GitHub flow/PR reviews, CI; automated tests with Vitest (unit/integration/e2e with Fastify inject).
• Observability: practical use of OpenTelemetry traces/metrics and structured JSON logging.
• Data & privacy: careful handling of PII (redaction/masking in logs, scoped access).
• Documentation: clear runbooks and lightweight user guides.

• What Makes Us Special?
• ? Our team has a genuine impact on the company’s decisions and direction.
• ✨ No bureaucracy – we keep things simple and efficient.
• ? Remote work from Poland
• ⏳ Flexible working hours – fit your schedule to your life.
• ? Fun social events to connect with your teammates.
• ? We value feedback and foster an open, supportive environment.

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