Crypto Backend Engineer

As a Crypto Backend Engineer at Trezor, you'll work on the infrastructure connecting Trezor Suite to blockchain networks and crypto data services, powering everything from account discovery and transaction history to fee estimation, token metadata, and transaction broadcasting. You'll build services that stay reliable even when blockchain nodes, RPC providers, or third-party APIs don't. You'll own your work end to end, influence architecture and observability, and help shape the long-term direction of Trezor's blockchain infrastructure.

What you'll do

• Build and improve reliable communication with nodes, RPC providers, explorers, and indexers across UTXO and account-based networks
• Maintain and actively develop Blockbook, an open-source blockchain indexer created by Trezor and used by major RPC providers such as QuickNode and NOWNodes
• Develop backend services for fiat rates, token and coin metadata, fees, and other crypto data used throughout Trezor Suite
• Integrate and evaluate providers such as QuickNode while designing sensible caching, fallback, and routing strategies
• Improve monitoring, logging, alerting, request optimization, and incident detection so users barely notice provider failures
• Contribute to technical decisions, architecture reviews, and infrastructure planning
• Work closely with DevOps, Security, and product engineering teams to operate dependable and secure services

What you bring

• Production experience building backend services in TypeScript/Node.js or Go
• Experience designing, operating, and debugging APIs or distributed services
• Solid knowledge of SQL databases, preferably PostgreSQL, and practical data modelling
• Ability to investigate failures across application, network, database, and third-party service boundaries
• Understanding of production observability, including metrics, logs, tracing, and alerting
• Strong problem-solving skills and the ability to make pragmatic technical decisions
• Good written and spoken English

Nice to have

• Experience with blockchain nodes, RPC APIs, indexers, explorers, or other crypto infrastructure
• Understanding of UTXO and account-based blockchain models
• Experience integrating third-party crypto-data services
• Familiarity with Docker, containerized deployments, caching, queues, or cloud infrastructure
• Knowledge of multiple blockchain ecosystems and their network protocols
• Open-source contributions

What we offer

• A unique opportunity to be part of a pioneering, security-first company in the crypto industry
• A role where you can build, implement, and see the real impact of your work
• The chance to work in an open-source company where transparency, trust, and security are part of how we think
• A high level of ownership and freedom, with real influence over the architecture and reliability of blockchain infrastructure
• Option to get paid in bitcoin
• Flexible working hours and a supportive team
• Budget for professional development, including training programs, courses, and workshops of your choice
• Friendly, open culture with regular company events and get-togethers
• Renovated offices with a gym, football table, billiards, PlayStation, 3D printer and free on-site parking
• Additional benefits such as a MultiSport card, company mobile phone tariff, massages, yoga, and fitness classes

About Trezor

Trezor is the company that invented the world's first hardware wallet and a leading name in crypto security. Founded in 2013 and still 100% self-owned, Trezor builds open-source products that help more than two million people across 200+ countries secure their digital assets.