1 to 25 of 34 High-Frequency Trading Jobs in the City of London

An elite global hedge fund are now seeking a Network Engineer to work on it’s trading infrastructure. To apply, you will ideally be CCNP or CCIE qualified with a strong background in low latency and multicast networks. Our client is a leading global market maker with an emphasis on technology to match. They seek an experienced profile … who would look to build ultra-fast and reliable connectivity to proprietary trading technology, invariably around a bleeding edge Cisco environment. What you'll be doing: Design, deploy and troubleshoot global network infrastructure Design industry leading networks Implement optimisations to build low latency network Work on network redesign, expansion and upgrade Support trading teams … in relation to high frequency Automation, capacity planning and connectivity advancement Manage network expansion, upgrades and support Provide expert support to high frequency trading teams What exposure you'll ideally have: LAN/WAN, Data Centres Cisco, Juniper, Arista BGP, OSPF, multicast, TCP/UDP Automation and Python scripting, Ansible More ❯

Low latency Java Developer - Algo Trading Up to £160,000 p/a Leading London-based trading firm has an outstanding opportunity for a Java Developer to join their low latency trading team. Our client quant prop trading house with performance figures of 22%. They are currently looking to expand their … high and intraday trading presence across FX, equities and commodities. The Java Developer will: Work closely with the Head of Trading and the Quant Team and assist in design and development of new trading algorithms, mainly in Java Help engineer a new greenfield low latency trading platform Work on connectivity … to Financial Exchanges Improve/maintain existing strategies Develop utility applications and excel tools to help with trading activities Work with traders, understand requirements for new applications and strategies to develop and also resolve issues if any This is an opportunity for someone that wants to work with a smart people in a collaborative environment that is solely More ❯

Job title: Software Engineer (C++, Python or Java) Client: Elite High Frequency Trading Firm Salary … Base (+ Bonus) Location: London/Hybrid My client are seeking a talented Software Engineer who will play a critical role in developing and optimizing high-frequency trading systems, ensuring they operate at peak performance with minimal latency. This is an opportunity to work in a fast-paced, intellectually challenging environment where your contributions … you will liaise with Senior Stakeholders such as PMs, Quants and Traders As a Software Engineer you will have the following responsibilities: Design, develop, and maintain high-performance trading applications. Performance tuning of state of the art trading systems - optimise code for maximum speed and efficiency, minimising latency. Implement and enhance trading More ❯

contract ITS Application Services (ENET) Engineer with expert knowledge of banking applications This role is pivotal in supporting and managing the infrastructure that underpins the bank's electronic trading systems. Required Skills & Qualifications: Knowledge of the Elastic Stack with experience in high-performance environments. Strong understanding of IP Networking, data flow within distributed systems, and security … or PowerShell for automation of deployment, monitoring, and alerting pipelines. Expertise with trading infrastructures and protocols (FIX, Market Data, Order Entry), and the demands of high-frequency and algorithmic trading environments. Proficiency in Linux systems, containers, and cloud-native observability stacks. Desirable Skills: Experience with Corvil, Pico tools, or similar for network … project management, organizational, and time-management skills. Strong communication skills, capable of interacting professionally with stakeholders at all levels. Ability to manage priorities in a dynamic, high-performance trading environment. Specific Requirements: Flexible working between the office and home with occasional international travel required. To apply for the ITS Application Services (ENET) Engineer position, please submit More ❯

We’re seeking an exceptional C++ Engineer to join a leading high-frequency trading (HFT) firm. You’ll be a core contributor to the development of ultra-low latency systems that power global trading strategies. This is a performance-critical environment where microseconds matter and world-class engineering makes the difference. What … You’ll Do Design, build, and optimize latency-sensitive components of our trading platform in modern C++ Work closely with traders and quants to deploy real-time strategies and market access systems Engineer high-throughput data pipelines and tick-to-trade execution paths Continuously profile and tune systems at the CPU, memory, and networking level Own … in a Linux environment with tools like perf, gdb, valgrind Familiarity with network protocols , especially UDP/TCP, multicast, or kernel bypass (e.g., DPDK, Solarflare) Bonus: Exposure to trading systems, market data feeds, or exchange connectivity You Might Thrive Here If You: Think in nanoseconds and debug in disassembly Enjoy profiling code more than writing it Build tools More ❯

Our client, a firm where O(n) is considered a catastrophic failure, is looking for L4/L5 C++ Engineers for their Core Trading Technology team. This is a role for developers who believe the OS is just a bootloader for their application and that true performance begins where the kernel ends. The Role You'll be hands … on, optimizing core trading infrastructure until it's little more than a thin, beautiful layer on top of the silicon. Your goal is to build high-performance, scalable systems with a religious devotion to ultra-low latency and deterministic performance. You'll be interacting with Central Limit Order Books (CLOBs), which are basically the final boss … of concurrent, high-throughput data structures. Key Responsibilities: What You'll Actually Be Doing Architecting in C++: You will design and implement trading systems using modern C++. We expect you to have strong opinions on C++20/23 features and to write code so efficient it makes compilers weep with joy. Applying Mechanical Sympathy: You don More ❯

developer for a brand-new trading team? In short: We’re working with an elite global trading firm known for its success in high-frequency trading (HFT) but operating under the radar (they aren't the typical firm you hear about). They’re setting up a brand-new trading … ll have the autonomy to create an entire trading platform from the ground up, leveraging the firm’s core infrastructure while optimizing system performance for high-frequency, low-latency trading. Work with a Humble Leader : You’ll work closely with a brilliant PM who has a strong technical background (from reinforcement learning strategies to … Linux, Unix, High-Performance, Operating Systems, Real-Time, Algorithms, Algorithmic Trading, Electronic Trading, E-Trading, Systematic Trading, High-Frequency Trading, HFT, High Frequency, Startup, Scaleup, Prop Trading, Execution, Algo Trading, Quant Trading, Parallel Computing More ❯

Role Overview: My client is a FTSE250 firm seeking a visionary and results-driven Head of Quantitative Trading to lead and scale our quantitative trading division. This is a high-impact leadership role responsible for developing and executing systematic and electronic trading strategies across global markets. The ideal candidate will combine deep … quantitative expertise, a strong software development background, and proven leadership capabilities to drive innovation and performance. Key Responsibilities: Strategic Leadership: Define and execute the quantitative and electronic trading strategy in alignment with the … firm’s investment objectives. Lead a multidisciplinary team of quantitative researchers, developers, and traders. Alpha Generation & Strategy Development: Oversee the research, development, and deployment of systematic and high-frequency trading strategies. Ensure robust backtesting, risk modeling, and performance attribution. Electronic Trading & Execution: Lead the design and optimization of electronic execution algorithms and More ❯

Join a globally renowned high-frequency trading firm and a highly respected, multi-strategy hedge fund at the forefront of systematic and quantitative research. We are looking for exceptional senior quant researchers/traders to join our systematic trading strategies team in New York City, London or Europe. Competitive compensation & performance-based … bonuses Your Role: As a Senior Quantitative Researcher, you will lead the development and optimization of high-frequency trading strategies in traditional financial markets. You will work closely with world-class engineers, quants, and traders to solve complex real-time challenges using advanced quantitative techniques and cutting-edge technology. Key Responsibilities: Develop and optimize … systematic, high-frequency trading strategies. Conduct quantitative research to uncover market inefficiencies and improve model robustness. Collaborate with engineering teams to build scalable, low-latency trading systems. Leverage machine learning and statistical methods to enhance signal generation and performance. Mentor junior researchers and foster a culture of technical excellence and collaboration. Who More ❯

Social network you want to login/join with: Application Support £140,000 + Bonus (High frequency trading firm), London (City of London) col-narrow-left Client: Hunter Bond Location: London (City of London), United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 4 Posted: 26.06.2025 Expiry Date … 10.08.2025 col-wide Job Description: Job Title: Application Support Client: FinTech trading Salary: Up to £120,000 + Bonus/Benefits Location: London (Hybrid) My client is a fully tech-driven proprietary trading firm, expanding their Application Support team. They seek candidates with prior front office experience to provide technical support and engineering functions for proprietary … and third-party trading systems. The role is highly technical, with a focus on automation. Responsibilities: Ensure readiness of the global trading platform for pre-trading and post-trading activities. Monitor and support the entire transaction flow across the trading platform. Identify, analyze, and resolve alerts/issues promptly or More ❯

Our client, a major High-Frequency Trading firm, is looking to hire a C++ Software Engineer to help develop and build out their HFT and MFT trading platforms. This individual will work closely with one of the firm's most successful Trading teams to help optimise their trading … firms, collaborate with an exceptionally talented team operating in a hybrid approach, and earn market-leading compensation packages. Responsibilities: Work directly on Mid-Frequency and High-Frequency Trading platforms and collaborate with some of the firm's top Traders Assist in the development and optimization of a top-class trading … of hands-on experience with C++ Software Engineering experience within the financial industry (ideally at a HFT firm, Hedge Fund or leading investment bank) Previous exposure working on Trading Systems Experience with Python development would be a plus Familiarity with Linux BS in Computer Science, Engineering, or related quantitative discipline To discuss the role in confidence, please reach More ❯

Overview: We are seeking a highly skilled C++ Software Engineer to join a leading high-frequency trading firm renowned for its cutting-edge technology and innovative approach to financial markets. You will work alongside some of the brightest minds in the industry, contributing to the design, development, and optimisation of high-performance … trading systems. This is a unique opportunity to work in a collaborative, fast-paced environment where technology and trading intersect. Responsibilities: Design, develop, and optimise high-performance, low-latency trading systems. Implement and enhance trading strategies and execution algorithms. Collaborate with traders and researchers to identify and deliver technology solutions … passion for tackling complex technical challenges. A proactive approach to development with a focus on quality and innovation. Experience in financial markets, trading systems, or high-frequency trading is advantageous but not required. What’s on Offer: Opportunity to work on state-of-the-art technology and solve challenging problems in a More ❯

City of London), United Kingdom Job Category: Other - EU work permit required: Yes Job Views: 2 Posted: 27.06.2025 Expiry Date: 11.08.2025 Job Description: Our client, a leading High-Frequency Trading firm, is seeking a skilled Quantitative Developer/Python Engineer to work directly with a successful HFT team. This role offers the opportunity to … successful hedge funds, collaborate with an exceptionally talented team in a hybrid work environment, and receive market-leading compensation packages. Responsibilities: Develop, upgrade, and optimize real-time HFT trading platforms. Collaborate closely with experienced traders to develop new trading strategies. Create analytical tools for portfolio risk management, pre/post-trading analysis, and performance … attribution. Onboard new instruments and backtest existing strategies on new instruments. Monitor system health and implement enhancements to trading activity. 3+ years of hands-on experience in building real-time trading systems. Strong Python programming skills; experience with machine learning libraries is a plus. C++ experience is advantageous. Experience in building production infrastructure for signal generation More ❯

Job Title: Site Reliability Engineer (SRE) – High-Frequency Trading Infrastructure Location: Onsite – New York City, London, or Singapore £140,000 - £240,000 (Depending on Level of experience and interview performance) Our Client, a leading high-frequency trading firm, is seeking a Site Reliability Engineer (SRE) to architect and … build next-generation production tools and infrastructure for their ultra-low-latency trading platform. This is a high-impact, mission-critical role focused on reliability, scalability, and performance in one of the most competitive and technologically advanced industries. About the Role This opportunity is ideal for an experienced SRE who thrives in production-critical environments. The … closely with infrastructure, trading, and development teams. Why This Role? This is a rare opportunity to be at the forefront of infrastructure innovation within a high-frequency trading environment. You’ll work alongside some of the brightest minds in the field, delivering systems that operate at massive scale and speed. If you More ❯

Based directly on the trading floor, you will play a crucial role in enhancing execution logic, automating workflows, and ensuring performance at scale for a high-frequency, multi-exchange setup. You will focus on optimising every component of the trading stackincluding multi-threading, network communication, order processing, and execution logicto achieve ultra … and performance tracking ensure system reliability. The team has deep expertise in trading protocols, messaging systems, network architectures, and concurrent computing to support a complex, high-frequency trading landscape. KEY RESPONSIBILITIES: Build and refine algorithmic trading models for use across various digital asset exchanges Improve and maintain dynamic hedging systems … of concurrent programming, including lock-free algorithms and shared memory architecture Practical experience with Linux performance tuning, including NUMA balancing and use of huge pages Background in high-frequency trading and real-time market operations Ability to design tools for live trade analysis, PnL tracking, and risk alerting Deep understanding of system-level optimization More ❯

A prominent equities trading business is … seeking a highly skilled Senior C++ Developer with extensive experience in low latency systems to join their cutting-edge team. Key Responsibilities: Design, develop, and optimize high-performance trading systems using C++. Implement and enhance low latency solutions to ensure optimal trading execution. Utilize the Standard Template Library (STL) and Boost libraries to create … operations. Required Skills: Proven expertise in C++ development with a strong emphasis on low latency systems. In-depth knowledge of STL and Boost libraries. Experience in high-frequency trading environments is highly desirable. Strong problem-solving skills and the ability to work under pressure in a fast-paced setting. Excellent communication skills and More ❯

Our client, a Leading High-Frequency Trading Firm, is looking to hire a skilled Quantitative Developer/Python Engineer to collaborate directly with a successful HFT team. This role gives you the opportunity to join one of the world's most successful hedge funds, collaborate with an exceptionally talented team operating in a hybrid … approach, and earn market-leading compensation packages. Responsibilities: Develop, upgrade, and optimize real-time HFT trading platform Work closely with experienced Traders and help them build out their new trading strategies Build analytical tools to help manage portfolio risk, pre/post trading analysis and performance attribution Help on-board new instruments and backtest … existing ideas on new instruments Monitor system health and implement tools and techniques to enhance trading activity Desirable Candidates: 3+ years of hands-on coding experience building real-time trading systems Strong Python experience. Machine Learning libraries experience is a plus C++ background is advantageous. Experience building production infrastructure for signal generation, backtesting and execution Bachelors More ❯

Excellent opportunity opens with top Hedge Fund for experienced Senior Quant, ideally with demonstrable exposure to the modern, institutional Crypto market. Lead the design and development of systematic trading strategies across a range of crypto markets including spot, derivatives, and on-chain venues Build and manage a team of quantitative analysts Conduct in-depth data analysis, backtesting, and … statistical modeling using large datasets from both centralized and decentralized exchanges. Collaborate with developers to implement research into production-grade trading algorithms. Optimize execution and improve trading performance through research on market microstructure and latency-sensitive strategies. Monitor and improve portfolio risk metrics using quantitative techniques. Stay informed on developments in crypto markets, DeFi protocols, and … trading APIs, and DEX/DeFi ecosystems. Nice-to-Have: Experience working with blockchain data (on-chain analytics, smart contract data, etc.). Knowledge of high-frequency trading systems and low-latency infrastructure. Exposure to portfolio optimization, factor models, or risk premia strategies. Experience with cloud computing and distributed data processing frameworks. More ❯

Systems UI Developer Salary: Up to £120,000 plus Bonus and Benefits NodeJS, JavaScript, TypeScript, React Framework, Trading Systems UI, Data Structures, High Frequency Trading, Tailwind, CSS, React Query, API, High performance UI Harrington Starr has partnered with an innovative Digital Currency Investment Platform Company that specialise in developing … being used globally and are offering the opportunity for you to play a pivotal role within the full software development life cycle. We are looking for an experienced Trading Systems UI Developer with NodeJS, JavaScript, TypeScript and NodeJS and including cloud technologies. You will have a degree in computer science from a reputable University and have a good … opportunity are as follows: Experience with NodeJS Solid experience with JavaScript and TypeScript Experience with React and React Query Experience with Tailwind and CSS. Experience with Real Time Trading data application and development Experience with Trading Systems and Front Office Trading environment Any experience with Digital Investments. A 2:1 or above in Computer More ❯

United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 2 Posted: 27.06.2025 Expiry Date: 11.08.2025 col-wide Job Description: Job Title: High-Frequency Trader Location: Remote (must have right to work in the UK) Employment Type: Full Time Job Summary: We are seeking a skilled High-Frequency … fast-paced financial markets. The ideal candidate will have strong quantitative skills, programming expertise, and a deep understanding of market microstructure. Key Responsibilities: Design, implement, and optimize high-frequency trading algorithms. Analyze market data to identify short-term trading opportunities. Monitor and improve latency, execution efficiency, and risk controls. Work closely with … background in math, statistics, or computer science. Proficiency in programming (C++, Python, or similar). Existing knowledge and experience working on options products in a high frequency trading environment Knowledge of financial markets, order books, and execution tactics. Ability to work under pressure in a fast-paced environment. Compensation: Up to $250K base + More ❯

SRE/DevOps Engineer – High Frequency Trading - Multi Strategy Hedge Fund - Multi Billion Dollar Hedge Fund - Multiple Headcount - Open to Relocation - Up to £700k TC Join a leading multi-strategy hedge fund, where you’ll collaborate with elite engineers and top investment professionals to develop cutting-edge trading technology. We are seeking … DevOps Engineers with 5+ years of experience to join a leading multi-strategy hedge fund. This role offers an opportunity to work in a fast-paced, technology-driven trading environment where you will collaborate with elite engineers and top investment professionals to develop cutting-edge trading technology. Key Responsibilities: Drive the transformation of trading … technologies (AWS), containerization (Docker), and messaging systems (SNS, SQS, RabbitMQ) . Immediate opportunities to contribute meaningfully and drive innovation. If you are passionate about building robust, high-performance trading systems and want to work with some of the best minds in the industry, apply below More ❯

financial domain expertise Real-time Market Intelligence: Process millions of data points per second from LSE, Bloomberg, and alternative data sources Autonomous AI Agents: Build intelligent agents for trading, compliance, research, and risk management Predictive Analytics: Develop ML models for earnings prediction, M&A identification, and market regime detection Technical Infrastructure Cloud-Native Architecture: Multi-region deployment (London … Essential Experience Driven, Optimistic and we don't discriminate on age and experience Proven track record building and scaling B2B SaaS platforms to $50M+ ARR Financial services experience - trading systems, risk management, or regulatory compliance AI/ML expertise … LLMs, real-time ML systems, or quantitative finance applications Technical Expertise Deep knowledge of distributed systems, microservices, and cloud architecture Experience with real-time data processing and high-frequency trading systems Strong background in machine learning, preferably in financial applications Familiarity with financial APIs (Bloomberg, Refinitiv) and regulatory requirements Leadership Skills Experience building engineering More ❯

Title: Core Java Developer – Ultra Low Latency Trading Systems Location: London Type: Permanent Overview: We are hiring a Core Java developer to join a high-performance trading team focused on eFX OR Crypto markets. This role requires deep technical expertise in ultra-low latency systems and a strong understanding of electronic trading environments. Key Responsibilities: Design and develop low-latency, high-throughput trading components Work closely with quant and trading teams to optimise execution performance Build and maintain messaging infrastructure using technologies such as Aeron, SBE, Disruptor, Chronicle, and FIX Tune the JVM for microsecond-level performance (0GC, CPU affinity, memory management) Contribute to … level performance optimisation Desirable: Experience with 0GC and off-heap memory management Exposure to cloud-based deployment and containerisation (Docker, Kubernetes, CI/CD) Background working in high-frequency trading or market-making environments More ❯

on key operations. **Responsibilities** - Improve low -latency trading infrastructure - Optimize pricing engine performance - Enhance network infrastructure for fast data transmission - Develop and test features for high-frequency trading and risk management **Technical Skills Required** - Strong Rust programming skills (minimum 2 years) - Experience with latency - sensitive applications - Ability to write high More ❯

About We are at the cutting edge of quantitative trading, leveraging rigorous research and advanced automation to thrive in both conventional and crypto markets. They empower … top-tier institutional and retail clients with innovative algorithmic strategies, deep market insight, and scalable infrastructure built in-house. Our culture balances the discipline of high‐frequency trading with the entrepreneurial agility of a DeFi start-up. Key Responsibilities Design and develop predictive market‐making and directional execution models Apply statistical and … machine learning techniques to extract short‐term signals (ms–minutes horizon) Lead research initiatives: back‐testing, signal refinement, parameter optimization for diverse products (spot, derivatives, ETPs) Analyse high-frequency market data to uncover microstructure patterns and alpha-generating opportunities Simulate and model market interactions across liquid and illiquid instruments Build and maintain research tools and infrastructure More ❯