Full-Stack Engineer (React + Go/MERN)

We build a security-first platform for digital asset operations. Our product is API-driven, highly auditable, and engineered for reliability. We're looking for a senior full-stack engineer who can own features end-to-end: from clean domain modeling in Go or Node.js to a crisp React UI.
What you'll do:
Build end-to-end product features across Go and Node.js/Express backends and React frontend
AI-assisted development: use Cursor/Copilot/ClaudeCode (or similar) daily to accelerate delivery, refactoring, and test generation—while verifying outputs and keeping code clean
Design backend services using DDD patterns (bounded contexts, aggregates, domain events), clean layering, and pragmatic architecture
Implement data models and migrations across PostgreSQL and MongoDB, using GORM, Mongoose, or raw queries where appropriate
Build and maintain REST APIs (and webhooks/event-driven workflows where needed) in both Go and Node.js/Express
Implement frontend flows in React (TypeScript): dashboards, admin workflows, status lifecycles, audit views
Ensure correctness and observability: structured logging, metrics, tracing, and production-ready error handling
Contribute to security fundamentals: RBAC, least-privilege access, safe secrets handling, and audit trails
Own quality: unit/integration tests, contract tests, and CI pipelines
Must-have experience:
5+ years building production systems with Go and/or the MERN stack (MongoDB, Express, React, Node.js), plus solid React experience
Strong backend fundamentals: concurrency, APIs, reliability, debugging
Hands-on with DDD (not just buzzwords): can model domains and keep boundaries clean
Strong database skills across PostgreSQL and MongoDB: schema/collection design, indexing, query tuning, migrations
Experience with GORM and/or Mongoose (or similar ORMs/ODMs) plus comfort dropping to raw SQL or aggregation pipelines when needed
Frontend proficiency in React (TypeScript preferred), including state management and form-heavy admin UIs
Good testing discipline (Go testing, Jest/Vitest, integration tests; frontend testing basics)
REQUIRED: confident daily use of AI coding tools (Cursor/Copilot/etc.) with disciplined verification and secure practices