Senior Rust Developer – Fintech / Trading / Infrastructure

Eclipse IT Recruitment; City Of London; Hybrid; GBP 95,000 - 140,000; Full time

Benefits offered by this job

Bonus

Equity

Pension

Private healthcare

Job summary

Eclipse IT Recruitment seeks a senior Rust developer to design and build low-latency, high-throughput services at the core of a fintech platform. You will own critical components such as trading, market data, and core infrastructure, while tuning networking, concurrency and memory for optimal performance.

You will mentor engineers, lead technical design discussions, and contribute to testing and observability in a distributed system environment with cloud and container tech.

Qualifications

• Senior production Rust experience with async Rust.
• Strong background in C++ or another systems language.
• Low-latency, networking and Linux performance tuning experience.
• Distributed systems experience in production.
• Cloud and containers (AWS or GCP, Kubernetes).
• Trading, exchange, crypto/fintech experience is a strong plus.
• PostgreSQL and gRPC welcome.

Responsibilities

• Design and build low-latency, high-throughput services in Rust.
• Own critical components such as trading, market data, payments or core infrastructure.
• Tune performance end to end: networking, concurrency and memory.
• Build distributed systems that stay correct and resilient under heavy load.
• Champion testing, observability and clean, maintainable code.
• Mentor other engineers and lead technical design discussions.

Skills

Rust

Async Rust

C++ background

Low-latency

Networking

Linux performance tuning

Distributed systems

Cloud and containers

Kubernetes

AWS

GCP

PostgreSQL

gRPC

Trading/fintech experience

Tools

Kubernetes

AWS

GCP

PostgreSQL

gRPC

Job description

Location: London / hybrid or UK remote

Salary: Permanent: £95,000 – £140,000 + bonus and benefits. Contract: competitive day rate

Type: Permanent or contract

Our client, a high-growth business in financial technology and digital assets, needs a senior Rust developer to build the low-latency, high-reliability systems at the heart of its platform.

What you'll do:

• Design and build low-latency, high-throughput services in Rust
• Own critical components such as trading, market data, payments or core infrastructure
• Tune performance end to end: networking, concurrency and memory
• Build distributed systems that stay correct and resilient under heavy load
• Champion testing, observability and clean, maintainable code
• Mentor other engineers and lead technical design discussions

What you'll bring:

• Senior-level experience building production systems in Rust, including async Rust
• A strong background in C++ or another systems language
• Low-latency, networking and Linux performance tuning experience
• Distributed systems experience in production
• Cloud and containers (AWS or GCP, Kubernetes)
• Trading, exchange, crypto/blockchain or fintech experience a strong plus
• PostgreSQL and gRPC welcome

Benefits:

• Bonus, equity, pension and private healthcare (permanent roles).