Software Engineer - Wallets
Design and lead secure, scalable wallet infrastructure spanning custody, key management, signing, authorization, and recovery. The role requires deep expertise in wallet or cryptographic security infrastructure, distributed systems architecture, and modern blockchain account models.
About the job
Responsibilities
- Own the architecture of wallet infrastructure for custody, key management, transaction signing, authorization, and recovery.
- Design flexible signing infrastructure supporting MPC, HSMs, secure enclaves, TEEs, and emerging cryptographic approaches.
- Build and evolve wallet systems across EOAs, smart contract wallets, account abstraction, ERC-4337, embedded wallets, and multichain infrastructure.
- Define boundaries between cryptography and wallet orchestration, including keys, signing authority, transaction policies, permissions, and authorization.
- Architect key management systems for key generation, distributed key generation, storage, rotation, backup, recovery, and hardware-backed isolation.
- Build highly available signing and transaction infrastructure for high-value customer assets with reliable developer APIs.
- Set technical direction for wallet security, threat modeling, policy engines, secrets management, account recovery, authentication, and programmable authorization.
- Make build-versus-buy decisions across cryptography, custody, wallet, and security infrastructure.
Requirements
- Deep expertise in wallet, custody, cryptography, or security infrastructure, with strong distributed systems and architecture fundamentals.
- Experience designing or building production wallet, custody, signing, or key management systems securing high-value assets.
- Strong knowledge of applied cryptography, including MPC, threshold cryptography, threshold signatures, distributed key generation, ECDSA, EdDSA, or secure multiparty computation.
- Experience with HSMs, secure enclaves, TEEs, confidential computing, hardware-backed key isolation, or similar security-critical infrastructure.
- Strong understanding of modern wallet and blockchain account architecture, including EOAs, smart contract wallets, account abstraction, ERC-4337, transaction orchestration, and multichain systems.
- Experience designing authentication, authorization, policy, permissions, recovery, or secrets-management systems where security and correctness are critical.
- Track record of making architectural decisions in complex distributed systems while balancing security, reliability, developer experience, and extensibility.
- Ability to communicate technical tradeoffs and own architecture from first principles through production.
Compensation and Benefits
- Salary: $220,000–$270,000 annually.
- Unlimited time off, with a minimum of 10 days taken annually.
- Flexible work arrangements and a home-office setup stipend.
- US health, dental, and vision coverage, plus company-subsidized life insurance.
- 401(k) with a 4% company match.
- Equity option plan.
- Monthly health and wellness stipend.
- In-office meals and team/company summits.
Skills
Mpc, Hsms, Secure Enclaves, Tees, Confidential Computing, Threshold Cryptography, Ecdsa, Eddsa, Distributed Key Generation, Account Abstraction, Erc-4337, Smart Contract Wallets, Multichain Systems, Distributed Systems, Secrets Management
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