Marius Repede

Led Node.js/TypeScript and React-based delivery on a HIPAA healthcare platform in Azure, with schema-validated boundaries and production support under concurrent member load. Owned React modules (hooks, shared component architecture, Tailwind-friendly styling) and integrated LLM vendor APIs (OpenAI/Azure OpenAI) for assistants and long-running extraction jobs with validation/guardrails. Applied OAuth/JWT and RBAC-minded access patterns for regulated APIs, partnered on Azure release workflows with Key Vault-style secrets hygiene, and built Jest/RTL and API contract tests to catch issues before promotion. Troubleshot distributed failures across app, networking, and cloud layers with RCA, documented engineering conventions/runbooks, and mentored engineers to improve TypeScript and React quality while maintaining compliance constraints.

Architected Node.js/TypeScript microservices and event-driven async jobs under peak traffic, applying broker-class messaging, Redis workflows, and observability-focused design. Enforced idempotent API and job handling with retries and dead-letter paths so duplicate events didn’t corrupt checkout state. Provided technical leadership across squads, drove schema-validated REST/GraphQL services with versioned contracts, and owned long-running workflows with clear completion semantics. Established GitHub Actions CI/CD and monorepo quality gates, partnered on cloud identity and secrets handling (Managed Identity/Key Vault-style patterns), and coached engineers through code reviews and documented conventions. Implemented deterministic automated and contract tests, and contributed to architecture discussions covering risks, tradeoffs, rollbacks, and production runbooks.

Designed PostgreSQL and SQL Server schemas with ORM-style access, using migrations to support tenant-aware enrollment data isolation under peak load. Built Node.js/TypeScript HTTP services with idempotent APIs for duplicate-safe enrollment writes, and implemented webhook pipelines with retries and dead-letter handling for OAuth-secured partner events. Shipped React/Next.js and React Native clients against shared TypeScript DTOs with schema-validated boundaries across channels. Strengthened Azure DevOps/GitHub Actions CI/CD to align build/test/deploy with Dockerized local setups, and tuned PostgreSQL/SQL Server and Redis for stable throughput in multi-tenant scenarios. Owned RBAC-minded auth on enrollment APIs with audit-ready logging, performed distributed integration RCAs (messaging/API/data-layer), and documented conventions/acceptance criteria for consistent delivery in a regulated environment. Delivered long-running async enrollment workflows with explicit failure semantics.