Senior Rust Engineer (Web3)

Senior Rust Engineer - DCN

Company

Cryptio

Conditions

8 hours agoSenior London, UK Hybrid Full Time Backend Jobs by Cryptio

Skills

Fault Tolerance Validation Property-Based Testing Runbooks Event-Driven Loan Audit Trail State Machine Ordering Fuzzing Distributed Systems Custodian Lending Simulation Testing Market Data Observability Backend Reconciliation Idempotency Rust Api Concurrency Partial-Failure

About the Role

You will build a 0-1 digital assets lending marketplace: design and ship core backend services, implement loan workflows (disbursements, repayments, margin calls, liquidations, collateral releases), and integrate with custodians and market data providers. You will create guardrails via state machines, validation, audit trails, and reconciliation. Write thorough tests (integration, property-based, simulations, fuzzing), own systems end-to-end with observability and runbooks, and improve quality through strong design, code reviews, and mentorship. You will partner with Product, Operations, and Compliance to ensure the product is safe to ship and operate.

Requirements

• 7+ years of software engineering experience with backend or systems focus
• Experience building complex production systems with real business impact
• Experience with high stakes or mission critical systems such as financial infrastructure
• Deep understanding of concurrency race conditions idempotency ordering and partial failure
• Strong testing and correctness mindset
• Ability to design safe state transitions audit trails and reconciliation flows
• Ability to own technical design in ambiguous product contexts
• Rust experience or strong evidence of ability to learn Rust quickly
• Clear written and verbal communication about complex trade offs
• Experience mentoring other engineers

Responsibilities

• Design and ship core services for a loan marketplace
• Build workflows for loan disbursements repayments margin calls liquidations and collateral releases
• Integrate systems with custodians and market data providers
• Implement guardrails using state machines validation audit trails and reconciliation
• Write integration property-based tests simulations and fuzzing tests
• Own systems end to end with observability and runbooks
• Raise engineering quality through design thoughtful code reviews and mentorship
• Partner with Product Operations and Compliance to ensure safe operation

Benefits

• Remote or Hybrid working
• 25 days paid holiday plus bank holidays
• One additional day of annual leave each year up to 30 total days
• Birthday day off
• Mental health resources wellbeing programs and professional coaching
• Family-friendly policies
• Fitness and wellness budget
• MacBook Pro
• $200 home office setup budget
• Training and development budget
• Additional benefits depending on location

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