Principal Software Engineer on the Wallet Blockchain Platform team at Fidelity. Develop secure crypto platforms and mentor engineering talent in a dynamic environment.
About the role
- Senior Backend Blockchain Engineer building backend services for multi-blockchain operations at Uphold. Ensuring scalability and reliability for a Web3 financial platform used by millions.
Responsibilities
- Design, build, and maintain backend services for operations across multiple blockchains and distributed ledgers using network specific SDKs.
- Implement clean, well-tested TypeScript code; write unit and integration tests (using Jest) to ensure quality, reliability, and security.
- Participate in architectural discussions; contribute to technical design and continuous improvement of systems and processes.
- Mentor and support engineers through code reviews and pair programming; promote best practices and code quality.
- Create and maintain technical documentation for services, tools, and operational runbooks.
- Collaborate with Product, DevOps, and Security to plan, scope, and deliver features that meet performance and reliability goals.
- Monitor, troubleshoot, and resolve production issues; participate in on-call rotations as needed.
Requirements
- Bachelor’s degree in Computer Science, Engineering, or related field, or equivalent experience.
- 5+ years of professional software engineering experience.
- Proficiency with TypeScript (or JavaScript, if you also have other experience of higher level typed languages) and significant experience with blockchain SDKs (e.g., ethers.js, web3.js, bitcoinjs-lib).
- Practical experience interacting with smart contracts (note: authoring contracts is typically not part of this role).
- Strong experience writing unit/integration tests (preferably with Jest).
- Confidence working in large, complex codebases with a strong sense of ownership.
- Effective communication skills; collaborative, positive team player.
- Strong problem-solving skills, organizational skills, and ability to work under pressure.
Benefits
- Annual bonus program based on individual, team and company performance.
- Home office stipend to support the setup of a productive home office.
- Generous PTO, healthcare coverage, and employee assistance programs.
- Interesting and fun events and celebrations.
- Foodie culture and well-stocked office kitchen.
Job title
Job type
Experience level
Salary
Not specified
Degree requirement
Tech skills
Location requirements
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