Quantitative Developer (Rust/C++)

TechShack
City of London
1 week ago
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TechShack City Of London, England, United Kingdom


This range is provided by TechShack. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.


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Senior Consultant – Rust Engineering | Trading & FinTech | UK & Europe @ TechShack

TechShack are working with a high-performing quantitative trading firm building out their HFT desk. They trade globally across major liquidity venues and are hiring a Front Office Trading Systems Engineer (Rust/C++) to work on the hot path - the systems closest to trading and PnL.


This is a Rust-first role (production Rust), but open to elite C++ engineers who are happy to work Rust day-to-day.


Location: London preferred (hybrid). Remote considered for exceptional profiles, but priority is London-based candidates.


Compensation: £150,000 - £250,000 total comp + meaningful PnL-linked upside (role and impact dependent).


What you’ll work on

You’ll sit with senior engineers and work directly with traders/quants to build and optimise the top layer of the stack:



  • Tail latency / jitter work: profiling, instrumentation, removing bottlenecks, improving p99/p999 behaviour under load.
  • Low‑latency engineering: CPU affinity, memory layout, lock‑free patterns, async/event‑driven systems, network behaviour.
  • Production outcomes: robustness, observability, and performance that holds up in live trading (not "lab only").
  • Desk adjacency: translating research/ideas into production trading behaviour alongside quants.

What we're looking for

  • 3+ years in performance‑critical systems.
  • Proven low‑latency / HFT trading background (prop, market maker, quant fund, or equivalent).
  • Strong hands‑on Rust or C++ in production (Go considered if the latency story is real).
  • Evidence you’ve owned meaningful parts of FO systems (not just generic infra), e.g. market data handlers, order gateway, execution/routing, pricing/risk checks, simulation/backtesting support.
  • Comfortable explaining what you changed, how you measured it, and the impact on latency/throughput/stability.

Nice to have

  • Exchange protocols (FIX, ITCH/OUCH/binary feeds, multiplexed WebSockets), colocation realities, Aeron/SBE.
  • Kernel bypass / DPDK / tuning.

Why this role

  • Real upside tied to desk performance.
  • Small, senior team - you’ll ship things that matter.

If you’ve built front‑office trading systems in production (market data / execution / risk / routing), apply to this advert or reach out directly to discuss the details on a call.


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