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Praha, Česko
Hybrid
We’re Trezor, 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, we build open-source products that help more than two million people across 200+ countries secure their digital assets.
As a Crypto Backend Engineer, 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.
You don’t need to know every blockchain we support on day one. What matters is your ability to understand unfamiliar systems, investigate how they behave under failure, and turn that knowledge into reliable production software.
If this sounds like the kind of infrastructure you’d like to own, keep reading.
Blockchain connectivity - building and improving reliable communication with nodes, RPC providers, explorers, and indexers across UTXO and account-based networks
Blockbook development & maintenance - maintaining and actively developing Blockbook, an open-source blockchain indexer created by Trezor and used by major RPC providers such as QuickNode and NOWNodes
Backend services - developing services for fiat rates, token and coin metadata, fees, and other crypto data used throughout Trezor Suite
Third-party integrations - integrating and evaluating providers such as QuickNode while designing sensible caching, fallback, and routing strategies
Reliability at scale - improving monitoring, logging, alerting, request optimization, and incident detection so users barely notice provider failures
Architecture and ownership - contributing to technical decisions, architecture reviews, and infrastructure planning
Security and collaboration - working closely with DevOps, Security, and product engineering teams to operate dependable and secure services
You have 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
TypeScript, Node.js, Go, PostgreSQL, Docker
Blockchain nodes, RPC APIs, explorers, indexers, and third-party data providers
Monitoring, logging, and alerting tooling for production services
Git and an open-source development workflow
Check out our GitHub
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 — you’ll have real influence over the architecture and reliability of our 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 fun 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, fitness classes, and more
👋 Sounds good? We’d love to hear from you: just submit your CV and tell us about something you've shipped that you're proud of. We’ll get back to you as soon as we review your application, most likely within a week.
