Full Stack Engineer, Blockchain
Fireblocks is an enterprise-grade platform delivering a secure infrastructure for moving, storing, and issuing digital assets. It enables exchanges, custodians, banks, trading desks, and hedge funds to securely scale digital asset operations through its patent-pending SGX & MPC technology.
About Fireblocks
Fireblocks is an enterprise-grade platform that provides a secure infrastructure for moving, storing, and issuing digital assets. It enables financial institutions like exchanges, custodians, banks, trading desks, and hedge funds to securely scale their digital asset operations. The company was founded by Michael Shaulov, Idan Ofrat, and Pavel Berengoltz after they investigated a major cyber breach. Fireblocks utilizes breakthrough Multi-Party Computation (MPC) and patent-pending chip isolation technology to secure private keys and API credentials. The platform supports various use cases including treasury management, wallet as a service, tokenization, payments, and DeFi, and provides a complete development platform with APIs, SDKs, and tutorials for building on the blockchain.
Skills
About the Role
You'll join a team building the backbone of on-chain access for some of the world's largest financial institutions and crypto-native organizations, working at the intersection of blockchain protocol engineering and enterprise-grade reliability. You will design systems that route, protect, and optimize transactions across dozens of chains at scale, and work on mission-critical infrastructure powering DeFi connectivity, multi-chain integrations, transaction execution pipelines, and on-chain data access. Your work will have a direct impact on how billions of dollars flow through decentralized networks every day.
Requirements
- 7+ years of experience as a Backend or Full Stack Engineer
- Bachelor of Science (B.Sc.) or equivalent degree/experience
- Blockchain and Web3 experience including deep understanding of transaction lifecycles, consensus mechanisms, smart contract interactions, and on-chain data
- Proven experience working across multiple blockchain ecosystems — EVM-compatible chains (Ethereum, Polygon, Arbitrum, Base, etc.) as well as non-EVM chains such as Solana, TON, Tron, or similar
- Proficiency in Node.js and TypeScript
- Experience designing and operating microservices in production CI/CD environments
- Strong understanding of security principles, cryptography, and best practices in a blockchain context
- Familiarity with DeFi protocols — AMMs, lending markets, bridging infrastructure, or on-chain routing — is a strong advantage
- Experience with Web3 tooling and libraries (ethers.js, viem, web3.js, Solana web3.js, etc.)
- Demonstrated experience taking products from inception to delivery at scale
- Full stack experience (React, frontend development) — a nice to have
Responsibilities
- Design and build robust, scalable backend services supporting high-volume on-chain transaction flows across multiple blockchain networks — both EVM and non-EVM
- Own end-to-end development of backend components and APIs — from architecture decisions to production deployment
- Lead integrations with DeFi protocols, on-chain data sources, and blockchain nodes across a wide range of chains and ecosystems
- Research and evaluate emerging blockchain technologies, protocols, and standards to keep Fireblocks at the cutting edge
- Optimize existing production systems for performance, reliability, and security — reducing latency and increasing throughput
- Collaborate closely with product, protocol research, and platform engineering teams to deliver high-quality solutions on time
- Drive features from inception through to delivery at scale, taking full ownership of the product lifecycle
Benefits
- Meaningful equity