Tangem

Secure NFC crypto self-custody cards

Senior Backend Engineer - Logistics

Backend EngineeringConfirmed live in the last 24 hours

Full-timeRemote in SwitzerlandNo salary listed

About the Job

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.

Responsibilities

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.

Desired Qualifications

Logistics or e-commerce experience.
Observability experience.
Familiarity with domain-driven design or hexagonal architecture.

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

Responsibilities

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.

Salary

Additional info: <ul id="isPasted"><li>Stability, growth, participation in shaping the future unicorn.</li><li>Remote work from any location.</li><li>Competitive salary in EURO/USDT.</li><li>Compensation for the purchase of necessary technical devices for the work.</li></ul>

About the Company

Tangem

Secure NFC crypto self-custody cards

Tangem provides secure, customizable NFC-powered cards that act as self-custody instruments for cryptocurrencies and other digital assets. The cards enable users to manage keys and access assets via contactless NFC, leveraging asymmetric cryptography and proprietary firmware. A Kudelski Security audit underpins the security and privacy of the system. Unlike typical software-only wallets, Tangem’s hardware cards offer a tangible, offline-friendly way to hold digital assets, targeting individuals, financial institutions, and tech companies, and are sold directly online or through distributors. The company positions itself by removing middlemen and reducing infrastructure complexity to create a simpler, secure ecosystem for digital asset management, including CBDC-related solutions and secure identity verification. Overall, Tangem aims to make asset self-custody safer and more accessible for a wide audience.

Company size: 51-200
Company stage: Early VC
Total funding: $23M
Headquarters: Zug, Switzerland
Founded: 2017

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