Margo Group4mo ago
C++ Developer – High Frequency Trading (HFT Systems)
C++ DeveloperSoftware Engineering
4 views0 saves0 applied
Quick Summary
Overview
C++ Developer – High Frequency Trading (HFT Systems) Join MARGO in the UK (London) – High Performance Trading Environments MARGO is a tech-native consultancy delivering elite software engineering expertise to the most demanding financial markets environments.
Key Responsibilities
Core HFT Engineering · Design, develop and optimise ultra-low latency C++ trading components · Work on critical execution paths for market data processing and order routing · Implement lock-free and wait-free algorithms · Optimise memory allocation,…
Technical Tools
cppcsharpconcurrencylinuxnetworking
C++ Developer – High Frequency Trading (HFT Systems)
Join MARGO in the UK (London) – High Performance Trading Environments
MARGO is a tech-native consultancy delivering elite software engineering expertise to the most demanding financial markets environments.
We operate in latency-critical trading contexts where performance, determinism and predictability are core system requirements. Our consultants work in highly specialised trading environments, designing systems that interact directly with exchanges and market venues under extreme time constraints.
Business Context
You will join a High Frequency Trading / Low Latency Trading environment within one of our partners (investment banks, proprietary trading firms or market makers).
The teams design, build and operate latency-sensitive trading systems directly connected to exchanges, typically deployed in colocated environments.
These systems are characterised by:
· Microsecond to sub-microsecond latency constraints
· Deterministic and predictable execution paths
· Minimal software and network overhead
· Direct interaction with market data feeds and order gateways
Role Overview
We are looking for a C++ Software Engineer to work on latency-critical trading infrastructure.
The role is strongly engineering-driven and focuses on speed, predictability and control of execution rather than functional feature delivery.
Depending on the environment, the role may also involve interaction with C# components used outside the ultra-latency-critical execution path.
Key Responsibilities
Core HFT Engineering
· Design, develop and optimise ultra-low latency C++ trading components
· Work on critical execution paths for market data processing and order routing
· Implement lock-free and wait-free algorithms
· Optimise memory allocation, cache locality and CPU utilisation
· Reduce jitter and tail latency
System-Level & Hardware-Aware Optimisation
· Analyse and optimise CPU behaviour (branch prediction, cache misses, NUMA effects)
· Work closely with infrastructure and network teams on kernel bypass and user-space networking
· Profile systems at instruction-level and hardware-counter granularity
Production Ownership
· Ensure correctness, determinism and stability of production trading systems
· Participate in production releases and live deployments
· Investigate latency regressions and production anomalies
· Maintain rigorous operational discipline
Use of C# (Non-Critical Path)
C# may be used outside the latency-critical execution path for:
· Monitoring and control tooling
· Configuration and orchestration services
· Risk guards, limits and kill-switch mechanisms
· Real-time dashboards and operational analytics
C# is not used on the execution path and does not replace core C++ expertise.
Technical Environment
Core Technologies
· Modern C++ (C++17/20)
- Lock-free programming
- Custom memory allocators
- Zero-copy architectures
· Linux (advanced / low-level understanding)
- CPU pinning
- Huge pages
- NUMA architectures
· Networking
- TCP / UDP market data feeds
- Multicast
- Kernel bypass technologies (DPDK, Solarflare Onload or equivalent)
Latency & Performance Tooling
· CPU profilers and hardware performance counters
· Packet capture and latency measurement tools
· Exchange simulators and market data replay tools
Required Experience & Skills
Essential
· Strong experience in C++ development for performance-critical or low-latency systems
· Proven background in HFT or ultra-low latency trading environments
· Deep understanding of CPU architecture, caches and memory models
· Strong knowledge of concurrency, memory ordering and Linux internals
· Experience working close to hardware and network layers
· Strong production mindset and sense of ownership
Highly Valued
· Exposure to C# in trading, control or monitoring systems
· Experience with market data feed handlers or order gateways
· Prior exposure to market making or proprietary trading environments
· Experience with FPGA-assisted or hybrid architectures
Why Join MARGO
· Access to elite HFT and ultra-low latency trading environments
· Technically extreme and intellectually demanding engineering assignments
· Clear separation between execution-critical and supporting systems
· Human-sized consultancy with very high technical standards
· Long-term positioning on rare, high-value low-latency engineering skillsets
Important Note
This role is not suitable for candidates with a C#-only background.
Core execution systems are implemented in C++.
Please note - We do not offer visa sponsorship for this position.
Interested? Motivated? Apply on our website or at staff.uk@margo.com
Location & Eligibility
Where is the job
London, United Kingdom
Hybrid — some on-site time required
Who can apply
GB
Listed under
Worldwide
Listing Details
- Posted
- January 12, 2026
- First seen
- March 26, 2026
- Last seen
- May 25, 2026
Posting Health
- Days active
- 59
- Repost count
- 0
- Trust Level
- 33%
- Scored at
- May 25, 2026
Signal breakdown
freshnesssource trustcontent trustemployer trust
External application · ~5 min on Margo Group's site
Please let Margo Group know you found this job on Jobera.
4 other jobs at Margo Group
View all →Explore open roles at Margo Group.
Senior C# Developer with Fintech experience
PLN 170–230
Permanent contract & B2BSalesforce Tester – Fintech (Manual / Functional)
PLN 120–150
Permanent contract & B2BAndroid Programmer - Regular
PLN 110–122
Permanent contractBusiness Change Manager - Transfer Agency - Corporate Banking
Permanent contract & B2BSimilar C++ Developer jobs
View all →
Browse Similar Jobs
Software Engineer9.9kSolutions Architect493Java Developer216Php Developer145Full Stack Developer137Salesforce Developer122.Net Developer114Laravel Developer111Embedded Software Engineer99Security Software Engineer95Application Developer92Python Developer92Build Engineer58Search Engineer58Firmware Engineer54Cloud Platform Software Engineer45Low-Code Developer42Robotics Software Engineer39Data Platform Software Engineer38Wordpress Developer38
Newsletter
Stay ahead of the market
Get the latest job openings, salary trends, and hiring insights delivered to your inbox every week.
A
B
C
D
No spam. Unsubscribe at any time.
C++ Developer – High Frequency Trading (HFT Systems)