Contractor Network — Quant Engineering

Senior Quant EngineersBetween Contracts

If you are a senior KDB engineer, low-latency C++ developer, Python quant dev or systematic infrastructure specialist between roles or considering your next contract, register with us. We run a curated bench for funds and prop firms that need senior engineering capacity at speed.

Typical contracts are in the £700–£1,800/day range in London depending on seniority and specialism, with niche specialisms such as FPGA, senior HFT C++ and KDB architects with multi-fund track records extending to £2,000+/day. Start windows of 4–12 weeks. We keep a live list of upcoming requirements and match proactively against your profile, so you do not have to wait for a live role to be posted.

What You Get From Us

Transparent Day Rates
We tell you exactly what the role pays.
Fast Feedback
We respond to every registered contractor within 48 hours with clear feedback on role suitability.
Weekly Pay, On Time
Weekly billing once timesheet approved. No 30 or 60-day waits. Fully managed through our regulated back-office.
IR35 Assessments Handled
Written IR35 determination before engagement starts on every role.
No CV Without Consent
We never put your CV anywhere without your explicit consent on a named role, every time.
Proactive Matching
We match you to upcoming requirements before they go live, and most contracts are filled from the bench.

Who We Are Looking For

We maintain a curated bench of senior quant engineers. If you have deep experience in any of these areas and are considering contract work, we want to hear from you.

£900–2,200/day

KDB+/q Engineers

Production KDB environments, tick data infrastructure, Kx 4.x migration, research platforms. 3–5+ years at a fund or tier-1 bank. Mid £750–1,000/day, Senior £1,100–1,500/day, Architect £1,500–2,000/day. The highest-demand, lowest-supply skill set in systematic finance.

KDB+ Productionq LanguageTick Data SystemsKx 4.x / 4.1Equities / FX / RatesPython Integration
£900–1,800/day

Low-Latency C++ Developers

Execution systems, market data handlers, OMS infrastructure, lock-free data structures. Microsecond or sub-microsecond domain knowledge. HFT or systematic prop desk background preferred.

C++17/20Lock-Free QueuesDPDK / Kernel BypassFIX / Binary ProtocolsCo-locationNetwork Stack
£700–1,300/day

Python Quant Developers

Backtesting frameworks, signal infrastructure, data pipelines, research platforms. Strong pandas / polars / numpy. Experience building systematic research tooling at a fund or prop desk.

Python Research PlatformsPandas / PolarsBacktesting SystemsFeature EngineeringData PipelinesCloud Infrastructure

Also On Our Bench

Rust / Systems Engineers
Market Data & Connectivity Engineers
Quant Risk Developers
Trading System DevOps / SRE
FPGA Engineers
Java Trading Systems
Systematic Quant Researchers (contract)
Quant Analytics Developers

The Market Right Now — London 2026

KDB+/q is the tightest market in systematic finance. The majority of tier-1 systematic shops — the major multi-strategy funds, large quant funds, systematic CTAs and prop desks — run KDB for tick data and research infrastructure. The global talent pool is small, trained at investment bank trading technology divisions, directly at KX, or via the major hedge fund graduate programmes. Chronic unmet demand means day rates have risen 15–25% in three years.

Low-latency C++ and Python quant dev sit alongside it as the broader catchment. Same funds, same decision-makers, same contract-friendliness.

KDB+/q EngineerVery High Demand
MidLDN £750–1,000/dayNYC $1,000–1,350/day
SeniorLDN £1,100–1,500/dayNYC $1,500–2,000/day
ArchitectLDN £1,500–2,000/dayNYC $2,000–2,600/day
Low-Latency C++High Demand
SeniorLDN £900–1,300/dayNYC $1,200–1,700/day
Lead / HFTLDN £1,400–1,700/dayNYC $1,800–2,300/day
Python Quant DevHigh Demand
MidLDN £700–950/dayNYC $900–1,200/day
SeniorLDN £950–1,200/dayNYC $1,300–1,600/day
Market Data EngineerModerate Demand
MidLDN £600–850/dayNYC $900–1,200/day
SeniorLDN £850–1,150/dayNYC $1,200–1,500/day
MLOps / Quant ML InfraVery High Demand
SeniorLDN £900–1,200/dayNYC $1,200–1,600/day
LeadLDN £1,150–1,350/dayNYC $1,500–1,750/day
Systematic Infra / DevOpsHigh Demand
MidLDN £700–900/dayNYC $900–1,200/day
SeniorLDN £950–1,200/dayNYC $1,300–1,500/day

Rates shown are gross day rates. Inside-IR35 net rates reduce by Employer NIC, Apprenticeship Levy where applicable, and umbrella margin. NYC rates assume W-2 or 1099 with consultancy.

Register With Our Contractor Network

Submit your details and CV confidentially. We review your background within 48 hours, assess upcoming requirements against your profile, and reach out as soon as there is a relevant match.

What to Include in Your Registration

Current / most recent role and employer type (fund, prop desk, bank)
Core technologies and version depth (e.g. KDB+ 4.x, C++17/20)
Contract history — durations, clients, project types
Available from date (or notice period)
Rate expectations (day rate or range)
Location and remote / on-site preference
IR35 preference or PSC structure
Any restrictive covenants to be aware of

All registrations treated in strict confidence. +44 203 941 9113