Tangem is a high-tech company in the blockchain sector was founded in 2017, headquartered in Zug, Switzerland, with branches in North America, Eastern Europe, and APAC.

Tangem started with the idea of bringing digital assets to the masses using a unique combination of a smartcard-based hardware wallet and mobile applications. Company owns and promotes the technology of hardware cold-wallet for digital assets with secure and simple UX in 220 countries today. Our customers enjoy setup time within 1 minute with the ultimate security level for digital assets on their wallet. Tangem solutions offer multi-support of a growing number of thousands of tokens by a single wallet. SBI Crypto Investment Ltd., the digital asset venture investment company wholly owned by SBI Holdings Inc., has invested $15 million into Tangem in 2019 for mass adoption of blockchain technology.

About the role

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.

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Feel free to apply HERE