Description We are hiring a Senior Functional Backend Engineer to help us connect to insurance portals across the U.S. to ingest, transform, and deliver structured healthcare data, including claims, EOBs, plan documents, and accumulators.This role sits at the intersection of production reliability and system design . You'll own integration health in production, onboard new portals, expand data coverage, and write clean, strongly typed backend code. The team values functional principles such as composability, explicit error handling, type safety, and uses Effect extensively, but prior experience with Effect is not required.This is hands-on engineering in a system where correctness and clarity matter.English fluency is a MUST for this role! Only candidates with level C1 or C2 will be considered:A1 BeginnerA2 ElementaryB1 IntermediateB2 Upper-IntermediateC1 AdvancedC2 Proficient Responsibilities Production Triage & ReliabilityOwn first-response triage for portal integration failuresDebug login automation issues, crawl failures, and ingestion errorsTrace failures across logs, workflows, and monitoring systemsImplement clean, durable fixes - not just patchesEscalate systemic platform issues when appropriatePortal OnboardingBring new insurance portals into productionReverse-engineer APIs and browser workflowsBuild ingestion pipelines and validate structured outputsEnsure integrations remain resilient as portals evolveData ExpansionExtend existing integrations to capture new data typesMaintain strong typing and predictable transformationsGuard against schema drift and data inconsistenciesCollaborationContribute to runbooks and documentationParticipate in async standups and structured handoffsWork closely with a platform-focused engineering team Requirements 4+ years of Strongly Typed Backend ExperienceDeep experience in strongly typed languages ( TypeScript , Scala, Kotlin , Go, etc.)Careful API modeling and schema validationComfort designing systems where types act as contractsFunctional or Declarative Programming ExperienceYou don't need to come from a pure Functional Programming background, but you should be comfortable with immutability, explicit handling, declarative composition, and writing predictable, testable code.AI Integration Experience: Accelerate developers and internal operations by exposing or configuring API and MCP access to our infrastructure, while keeping costs and security under control.CI/CD Operations Experience: Ability to improve GitHub Actions workflows, implement faster CI runners, enhance caching strategies, and manage multi-environment deployments (dev/prod) using PulumiInfrastructure Management with AWS: Maintain AWS infrastructure including ECS, Aurora RDS (Gel), VPC networking, and monitoring stack (OpenTelemetry, Honeycomb, Sentry → but soon Datadog), and AWS access provisioningTypeScript (Backend)Enhance our TypeScript monorepo performance, optimize the Nx build system, migrate from CommonJS to ESM, and improve our Docker-based DevContainers Nice To Have Experience with EffectExperience with Effect is a strong plusIf not, you should be comfortable learning it and working within a composable, typed effect systemPlaywright or browser automationAPI reverse-engineering via browser devtoolsWorkflow orchestration (Temporal or similar)Data ingestion or transformation pipelinesObservability tooling (Datadog or similar)MDM & Security & Compliance: Support HIPAA compliance initiatives, including RBAC implementation, encryption standards, and security monitoringExperience in the Healthcare industry in the USA