Responsibilities

• Blockchain integrations:

- Development and support of wallet infrastructure: processing deposits and withdrawals, monitoring network status - Support, expansion, and development of blockchain indexers for existing and new networks - Implementation and support of transaction formation and delivery to the blockchain - Integration of new networks into the product

• MPC/TSS: Integration and operation of MPC/TSS signing coordinator in production
• Development and quality: Development of backend services in Kotlin/Spring, as well as support and development of services in Golang and Rust
• Code review, making architectural decisions, developing and improving blockchain integrations

Requirements

• 5+ years of commercial backend development;
• 3+ years of practical experience with blockchain integrations in production;
• Commercial experience in crypto or fintech is mandatory.
• Confident development of backend services in Kotlin/Spring; reading, supporting, and modifying services in Golang in production
• Understanding of event-driven architecture, idempotency, and consistency of financial data
• Understanding both transaction models - UTXO and account - at the level of construction, signing, and sending to production
• Experience in building wallet infrastructure: processing incoming transfers, withdrawals, real-time fee management
• Experience writing blockchain indexers in production, including handling network reorganizations
• Experience integrating MPC/TSS in production - understanding threshold signature schemes not just theoretically
• Mathematical background: understanding cryptographic primitives at the application level

Conditions

• Full remote work
• Opportunity to work in a cool team, influence processes
• Minimum bureaucracy
• Competitive salary