Senior Backend / Integration Engineer (Node.js)

Join Akvelon — build products used by millions! Akvelon is an IT company with 20+ years of experience and 1,200+ engineers across 15+ locations worldwide. We work with both well-known global tech companies, including Microsoft, Facebook, Airbnb, Dropbox, and Pinterest, and with growing startups. Our teams are involved in different types of engineering projects, from cloud solutions and AI/ML systems to big data, web, and mobile applications. Since we are remote-first, our engineers work in distributed teams with flexible hours. We value ownership, clear communication, and the ability to take responsibility for your part of the work. About the project Our client, a US-based digital health company, is building a closed-loop wellness platform. The central engineering challenge is integration: consolidating around a dozen existing production systems (EMR, wearables, labs, billing, messaging) into a single unified experience, automating data transfers that are manual today, and picking canonical sources of truth per data type — all while handling Protected Health Information (PHI) end to end. We're looking for a Senior Backend / Integration Engineer to build the API and integration layer that powers the platform, working closely with the architect, mobile, and web teams in a distributed setup. Requirements 5+ years of backend development experience, with strong hands-on TypeScript/Node.js Proven experience designing and building API integrations with third-party systems (REST/webhooks, auth flows, rate limits, retries, data reconciliation) Strong experience with PostgreSQL — data modeling, queries, and performance Experience with cloud and serverless environments (Cloudflare Workers/Hono, or Node on AWS/GCP) Solid understanding of building reliable, testable services with automated tests Experience with background jobs, queues, and scheduling Excellent spoken and written English communication skills Ability to work independently and collaborate effectively within a remote or distributed team Nice to have Healthcare / HIPAA experience — building PHI-handling services with audit logging, retention, and vendor BAAs (strong plus) Experience with wearable/health-data aggregators (Terra, Vital) or EMR systems Familiarity with Stripe, managed auth providers (e.g. Clerk), and transactional messaging (email/SMS) Experience integrating LLM/AI features under compliance constraints (BAA-covered inference, logging, guardrails) Experience with a TypeScript monorepo (Turborepo) and shared packages Responsibilities Build and maintain the API and integration layer connecting the platform to external source systems Automate data flows that are currently manual, and implement reconciliation across systems Design and implement PostgreSQL schemas and canonical data models per data type Implement PHI controls — audit logging, retention, and data segregation — across services Build background jobs, queues, and scheduled tasks for ingestion and syncing Collaborate with the architect, mobile, and web teams on API contracts and data flows Write automated tests and own the reliability of your services Take ownership of your part of the work and communicate clearly within a distributed team Originally posted on Himalayas