Senior Software Engineer

Understanding Recruitment; Greater London; On-site; GBP 90,000 - 120,000; Full time

Job summary

Understanding Recruitment's client in London is seeking engineers to build and optimise high-performance, latency-sensitive distributed infrastructure. You will own architecture, implementation, and production stability across the full lifecycle in a lean, technically demanding environment.

There are no specific language requirements; strong skills in concurrency, memory management, and performance optimisation are essential, with opportunities to work with Rust and engage in complex

Qualifications

• Strong understanding of concurrency and parallelism.
• Experience with memory management and performance optimisation.
• No specific language or crypto requirements.

Responsibilities

• Build, maintain and improve core distributed infrastructure.
• Optimise latency-critical execution paths.
• Design complex concurrent and multi-threaded systems.
• Build integrations with external protocols and real-time networks.
• Develop infrastructure orchestration and co-ordination systems.
• Profile and optimise performance-sensitive applications.
• Design resilient systems for unpredictable workloads.

Skills

Concurrency & parallelism

Memory management

Performance optimization

Tools

Rust

Job description

This client is building high-performance infrastructure powering decentralised markets. The engineering environment is extremely lean, operating in domains where execution speed, system reliability, and infrastructure quality are vital. Engineers are responsible for designing and building deterministic, latency-sensitive distributed systems that remain fault-tolerant under continuous production load.

You Will Work On

• Building, maintaining and improving core distributed infrastructure
• Optimising latency-critical execution paths
• Designing complex concurrent and multi-threaded systems
• Building integrations with external protocols and real-time networks
• Developing infrastructure orchestration and co‑ordination systems
• Profiling and optimising performance-sensitive applications
• Designing resilient systems capable of operating under unpredictable workloads

Engineers are expected to take ownership across the full lifecycle — architecture, implementation, optimisation, deployment, and production stability.

Skills & Experience

There are no specific language requirements, nor Crypto requirements.

You should have a strong understanding of areas such as:

• concurrency and parallelism
• memory management and performance optimisation

Why This Role Is Interesting

• Opportunity to work professionally with Rust, even without prior commercial Rust experience
• Highly technical, low‑bureaucracy engineering culture