Senior Backend Engineer
Tangem is a hardware wallet company that lets users store, buy, swap, stake, and spend crypto using NFC-enabled card and ring-shaped devices.
Maintainer signals as of 9/25/2026
Funding history
About Tangem
Tangem builds hardware wallets for users who want to self-custody digital assets without relying on exchanges or custodians. Users can store, send, receive, swap, stake, and spend crypto across multiple blockchain networks using NFC-enabled card or ring-shaped devices paired with a companion mobile app. The wallets use a secure element chip, require no batteries or cables, and offer a seedless backup system using multiple physical cards.
Skills
About the Role
You will design and build backend services and APIs, integrate logistics providers for shipping, tracking, fulfillment, and webhooks, and create reliable asynchronous workflows. You will optimize PostgreSQL queries and data models, validate AI-assisted development through reviews and automated tests, and own features from specification through production.
Requirements
- Production experience with Node.js and TypeScript
- NestJS experience
- Experience building and maintaining third-party API integrations and webhooks
- Understanding of AWS SNS/SQS and asynchronous systems
- PostgreSQL and SQL skills
- Experience with spec-driven AI-assisted development
- Engineering judgment and ownership
Responsibilities
- Design and build backend services and APIs with Node.js, TypeScript, and NestJS
- Build integrations with logistics providers for shipping, tracking, fulfillment, and webhooks
- Use AI-assisted development with 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 from specification and API contracts through implementation, testing, and production
Benefits
- Remote work from any location
- Compensation for necessary technical devices