Backend Engineer (Logistics Stack)

We are looking for a Senior Backend Engineer to build backend services and logistics integrations for our platforms, including an e-commerce platform for our cold crypto wallets.Responsibilities Tech Stack: Node.js, TypeScript, NestJS, TypeORM, PostgreSQL, AWS SNS/SQS Design and build backend services and APIs with Node.js, TypeScript, and NestJS . Build integrations with logistics providers, including shipping, tracking, fulfillment, and webhooks . Use AI-assisted development as part of the engineering workflow, with strong validation through code review and automated tests. Design reliable asynchronous workflows with AWS SNS/SQS , including retries, DLQs, and idempotent processing. Design and optimize PostgreSQL queries, transactions, and data models. Own features end-to-end: from specification and API contracts to implementation, testing, and production . Requirements Strong production experience with Node.js and TypeScript . Strong NestJS experience. Experience building and maintaining third-party API integrations and webhooks . Solid understanding of AWS SNS/SQS and asynchronous systems . Strong PostgreSQL and SQL skills. Experience with spec-driven, AI-assisted development . Strong engineering judgment and ownership. Nice to have Logistics or e-commerce experience. Observability experience. Familiarity with DDD or hexagonal architecture . What we offer Stability, growth, participation in shaping the future unicorn. Remote work from any location. Competitive salary in EURO/USDT. Compensation for the purchase of necessary technical devices for the work.