Back end developer mobile app

2 weeks ago

Tiruppur, India Budget Caddie Full time

Senior Backend Engineer (Node 20 · Type Script)Location: RemoteType: Full-time — Immediate startAbout Budget CaddieWe’re building a next-gen personal finance app for Gen Z. Our mission is to transform bank transactions into smart insights and goals users actually act on.What you’ll doBuild REST APIs from Open API specs: auth, Plaid link/exchange, webhook (fast 202+enqueue), transactions list/patch, insights refresh/list.Write SQS workers:Ingestion — Plaid cursor sync, idempotent upserts to Postgres, raw payloads to S3.Insights — Gemini calls with quotas, timeouts, circuit breakers; persist JSON results.Design and evolve Postgres schemas/migrations; implement efficient queries, cursor pagination, and Rediscaching for hot reads.Enforce input validation (AJV/Zod), structured logs (pino), and distributed tracing (Open Telemetry).Add tests (unit/integration), docs (Postman/Open API examples), and runbooks (queue replay, webhook replay).Collaborate tightly with the Platform/Infra engineer to keep security, performance, and cost in check.Must-haves5+ years building Node/Type Script backends with Postgres and a queue (SQS/Rabbit/etc.).Proven experience with secure webhooks (signature/HMAC verification) and third-party APIs.Strong grasp of idempotency, retries/backoff, cursor pagination, error design, and API performance.Comfortable with Docker, Git Hub Actions, and observability basics (logs/metrics/traces).Nice to havePlaid SDK experience; LLM API usage (Gemini/Open AI); SMS flows (SNS/Twilio).Exposure to Java/Spring or Go (we may introduce JVM/Go for specific future services).Why choose usShip real features fast—your endpoints and workers power the core experience.Product influence on data models, API contracts, and user-facing behavior.Growth path to technical leadership with meaningful future upside.Modern tooling (Open API-first, OTel tracing, clean CI/CD) and pragmatic culture.Autonomy with quick decisions and direct access to founders.

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