Selini · 2 weeks ago
DeFi Software Engineer
London or New York
Full-time
Onsite
Mid, Senior Level
3+ years expSelini Capital is a company focused on high-performance crypto trading systems, and they are seeking a DeFi Software Engineer to join their trading team. This role involves building and scaling systems that operate on decentralized markets, contributing production-grade code, and interfacing with protocol teams to support new market opportunities.
CryptocurrencyFinancial ServicesFinTechTrading Platform
Responsibilities
Contribute production-grade code in Rust, Python, and related technologies
Build systems that interact with on-chain protocols (e.g., Solidity, JSON-RPC, Solana, MEV workflows)
Develop and refine real-time monitoring, strategy tools, and execution pipelines
Debug and optimize across the performance spectrum: latency, reliability, throughput
Interface with protocol teams and external projects to support new market opportunities
Grow into end-to-end ownership across DeFi integrations and trading infrastructure
Qualification
Required
3–7 years of professional software development experience
Strong programming skills and the ability to write clean, testable, and efficient code
A solid grasp of core computer science principles: algorithms, data structures, concurrency, networking, etc
Demonstrated technical excellence, such as: Top academic performance in CS, math, physics, or engineering
Competitive programming or olympiad success (e.g., ICPC, IMO, IPhO, IOI)
Internship or full-time experience at a highly selective tech company or fund
Ability to pick up new concepts quickly, take ownership, and communicate clearly
Rust is preferred, but you should have experience in at least one systems or statically typed language such as C++, Java, Go, C#, Kotlin, or similar
Preferred
Understanding of trading systems, market structure, or strategy implementation
Familiarity with DeFi: working with smart contracts, blockchain APIs, MEV, or Solana
Experience in Rust
Comfort with AWS, Grafana, or other infrastructure/observability tools
Strong math or statistics foundation, especially around modeling or simulation
Company
Selini
Digital Assets Investing and Algorithmic Trading Firm
51-200 employees
Funding
Current Stage
Growth StageLeadership Team
Gregory Dunn
COO
Mark Clerkin
Head of Business Development and Partnerships
Recent News
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