Senior C++ Engineer

Gtx UK Llp; Greater London; On-site; GBP 110,000 - 180,000; Full time

Benefits offered by this job

Casual work environment

Private health insurance

Small team with high ownership

Job summary

GTX UK LLP is seeking experienced C++ engineers to design and build fault-tolerant, low-latency market-making systems. You’ll collaborate with traders and quants to transform concepts into real features across pricing, hedging and risk management.

You will help drive architecture and technical direction for core trading systems, applying concurrency, memory management and database knowledge to deliver scalable solutions in a fast-paced environment.

Qualifications

• Extensive production experience building latency-sensitive systems using modern C++.
• Experience in market making, electronic trading or exchange connectivity.
• Strong understanding of concurrency, memory management and performance optimisation.
• Working knowledge of SQL and relational databases (Postgres, SQL Server, or similar).
• Excellent written and verbal communication skills.

Responsibilities

• Design and build fault tolerant, low-latency systems for ETF market making.
• Work directly with traders and quants to turn ideas into features across pricing, quoting, hedging, and risk management.
• Drive the architecture and technical direction of core trading systems.

Skills

C++ latency

Market making

Concurrency

Memory management

SQL databases

Communication skills

Tools

PostgreSQL

SQL Server

Job description

GTX is an ETF market maker, quoting across European exchanges. We're a small team of traders, quants and engineers building the systems that price, hedge, and trade thousands of instruments in real time.

We're looking for experienced C++ engineers to build out our next generation of market making systems, making architectural decisions that will shape how we trade for the next decade.

Key responsibilities

• Design and build fault tolerant, low-latency systems for ETF market making
• Work directly with traders and quants to turn ideas into features across pricing, quoting, hedging, and risk management.
• Drive the architecture and technical direction of core trading systems.

Required

• Extensive production experience building latency-sensitive systems using modern C++.
• Experience in market making, electronic trading or exchange connectivity.
• Strong understanding of concurrency, memory management and performance optimisation.
• Working knowledge of SQL and relational databases (Postgres, SQL Server, or similar).
• Excellent written and verbal communication skills.

Benefits and perks

• Casual work environment
• Private health insurance
• Small team with high ownership and autonomy