11 of 11 Permanent Performance Engineering Jobs in Berkshire

Ultra-Low Latency C++ Engineer | High-Frequency Trading Salary: £150k-£225k Total compensation: £250k-500k depending on performance and seniority A leading quant/systematic trading firm have multiple headcount for Ultra-Low Latency C++ Engineers to join their High-Frequency Trading team in London. The teams focus is building ultra-low-latency systems operating at global scale. They … re seeking experienced C++ engineers passionate about performance optimization and elegant system design where nanoseconds matter! What You'll Do: Design and optimize latency-critical C++ systems across trading, market data, and infrastructure components Performance engineering at every layer: CPU, cache, memory, and network Profile, benchmark, and fine-tune system behaviour under real-world conditions Collaborate with … hardware and FPGA engineers on end-to-end architecture design Kernel-level optimization and low-level systems tuning Required: 5+ years developing performance-critical C++ applications (modern C++ standards) Strong systems programming and low-level understanding Expertise in Linux internals, kernel tuning, and low-level profiling tools Genuine curiosity about hardware behaviour, networking, and system optimization Why Join: Work More ❯

Junior Software Engineer London, UK £85,000 basic plus bonus We’re looking for a Junior Software Engineer to join a team that specialise in optimising large-scale, high-performance systems used by demanding clients worldwide. You’ll work across the full delivery lifecycle, from profiling and tuning code, to rethinking architectures ensuring software runs with maximum speed, minimal … dive deep into complex systems, identify bottlenecks, and implement improvements that make a measurable difference for clients. What you’ll be doing Profiling and optimising existing code to boost performance and reduce memory footprint Designing and implementing performance enhancements for high-throughput, low-latency systems Working with Product, Engineering, and Clients to understand and meet performance targets Creating and maintaining automated performance and load testing frameworks Mentoring engineers on writing efficient, scalable, and maintainable code Contributing to architectural decisions that directly impact performance and reliability What we’re looking for A few years commercial experience in software engineering with strong experience in Python, Java, or C# Proven track record of performance More ❯

impact and cost is fully understood. Setting and agreeing shared targets and business outcomes with stakeholders Assist with the creation of key artefacts; strategies, communication plans Operational stability and performance enhancements Continuous improvement in the face of changing objectives. Provide design guidelines and assistance to major projects Assist with the transformation strategy for the Billing Domain, including engineering … and design strategies in order to maximize revenue and minimize cost for business. Ensure that requirement compliancy to design is tracked through the project lifecycle through to deployment. Technical performance engineering - to design in-life performance improvements (availability, capacity, reliability, security) Build software engineering skills and best practice To make sure that deliverables support the required … business outcome at all points of consumption within a journey Make sure all component managers comply with requirements to address non-functional impacts e.g. performance and reliability. Make sure all critical systems have implemented an appropriate level of resilience, both local & geographic, that is regularly tested Main Interfaces: Work with relevant domain and solution architects and designers to agree More ❯

We’re working with a leading, technology-driven trading organisation with a global presence, seeking a Senior Software Engineer to join their innovative platform engineering team. This is an exceptional opportunity to work on cutting-edge systems that process data at scale, powering decision-making in fast-moving global markets. Our client is a diversified principal trading firm operating … across multiple asset classes, financial instruments, and emerging sectors. Key Skills & Experience 3+ years’ experience in platform-level software engineering Strong computer science fundamentals (degree or equivalent experience) Proven expertise in Java, Python, or other modern programming languages Experience working with large-scale, high-volume data systems Strong problem-solving and analytical skills Comfortable collaborating with distributed, global teams … The Role As part of a highly skilled engineering team, you will: Build tools to enable rapid market opportunities and enhance trading operations Partner closely with analysts, quants, and traders to understand their needs and deliver intuitive, self-service solutions Design and develop systems for large-scale data acquisition, processing, storage, and visualisation Contribute to a platform that consolidates More ❯

infrastructure strategy, delivery, and scale across low-latency trading systems. This hire will drive a major AWS migration, build greenfield environments, modernise legacy systems, and shape the long-term engineering roadmap. You’ll lead a small but senior infrastructure function with real autonomy and impact. The Role Own infrastructure architecture across cloud, on-prem and hybrid platforms Lead end … connectivity across firewalls, routing and multi-site links Drive network security, segmentation and access control strategy Lead and grow a high-performing infrastructure/DevOps team Partner closely with engineering, trading and risk functions Automate provisioning and deployment with IaC (CloudFormation/Terraform/Ansible) Scale monitoring, cost optimisation and system reliability in production Background 7+ years in infrastructure … leadership within trading, market-making or high-performance engineering environments Strong AWS architecture and hybrid (cloud + on-prem) experience Deep networking background: routing, switching, low-latency connectivity Strong understanding of reliability engineering and autoscaling systems Prior experience building and scaling teams in high-performing environments Confident interacting with technical and trading leadership Core Skills AWS (VPC More ❯

an experienced Test Architect/Senior Test Manager with Consultancy experience to join them on a permanent basis due to company growth. They provide pioneering and cutting-edge Quality Engineering and Agile/DevOps transformation services. To be successful in this role you should bring consulting experience and the ability to work at ease and collaboratively to support their … clients. Delivery Requirements • Extensive experience in delivering complex test projects and programmes - Agile and Waterfall • Experience in working across the SDLC and understanding software engineering, strong knowledge of test phases eg Unit, System, Integration, UAT and NFT • Great working knowledge of test automation, performance engineering, DevOps, test environments, test data, test management, and SDLC tools • Ability to … level Test Strategies, Approach and Plans • Ability to create test estimates, budgets, and define/build reusable testing assets for large/complex projects • Experience in defining standard quality engineering architecture, methodology, technical and process improvement, and tools across engagements • Demonstrable ability to improve quality practices across the software delivery lifecycle including integration into project management methodologies Leadership Responsibilities More ❯

Power BI. The role requires deep technical expertise in Spotfire s visual and scripting frameworks, alongside the ability to reverse-engineer, redesign and optimize data models for scalable, high-performance reporting in Power BI. This role is critical to navigating functional parity, data transformation and performance alignment between platforms, working closely with business users, report owners and Power … and Power BI developers to align source data, dataflows and model transformations. Work with business stakeholders to define functional parity, consolidate multiple versions and recommend optimisations. Provide guidance on performance engineering approaches in Power BI, including model size reduction, incremental refresh, composite models, DirectQuery/Import trade-offs. Support UAT by validating that migrated Power BI reports meet More ❯

leading quantitative crypto trading firm building globally distributed, ultra-low-latency systems that power their research and execution platform. You’ll work at the intersection of infrastructure, software, and performance engineering - solving deep technical problems at scale. What you’ll do: Own and optimise infrastructure behind a 24/7 web data and trading platform spanning multiple clouds … comfortable debugging distributed systems. Experience in high-throughput, low-latency, or large-scale environments (finance, trading, or scraping preferred). If you’re an engineer who loves optimisation, systems performance, and solving real production challenges - please apply. More ❯

Principal JavaScript Performance Engineer (with C++/Java/C# exposure) Location: London (Hybrid – 2 days WFH) Salary: £150,000 - £200,000 (Permanent)pension, private healthcare, gym membership, 25 days + 8 BH holiday allowance, tech/hardware budget. A high-growth software company is building the gold standard in UI frameworks and data-intensive visualisation technology . With … of what’s possible in the browser — solving problems of scale, speed, and complexity that ordinary web development never touches. What you’ll do Design and optimise a high-performance UI framework used globally in real-time applications. Push the limits of JavaScript, TypeScript, and the browser runtime to handle millions of data points smoothly. Solve deep algorithmic and … and enterprises worldwide. What you’ll bring Mastery of vanilla JavaScript and TypeScript , with additional exposure to C++, Java, or C# . Strong knowledge of data structures, algorithms, and performance optimisation . Experience with frameworks like React, Angular, or Vue , and a deep understanding of DOM internals and rendering pipelines . A systems-level mindset : diagnosing bottlenecks, eliminating memory More ❯

of the world's most advanced high-frequency trading firms. This is a rare opportunity to work at the intersection of cutting-edge technology and global financial markets, where performance is measured in nanoseconds and innovation drives competitive advantage. You'll be part of a team that designs and builds ultra-low latency trading systems deployed across global exchanges. … Your work will directly impact trading performance, and you'll be empowered to push the boundaries of what's possible in software and hardware optimisation. Key Responsibilities Architect and implement high-performance C++ systems with extreme latency sensitivity. Optimise every layer of the stack - from CPU cache and memory allocation to kernel bypass and network I/O. … and real-time analytics pipelines. Ideal Candidate Expert-level proficiency in modern C++, with a deep understanding of low-level systems programming. Strong grasp of computer architecture, concurrency, and performance engineering. Experience with kernel bypass technologies (e.g., DPDK, Solarflare/OpenOnload) and high-performance networking. Familiarity with Linux internals, NUMA, CPU affinity, and custom memory management. Proven track More ❯

eTrading C++ High Performance Engineer - Leading Quantitative Hedge Fund | London 5 days in office Market Leading Compensation I am partnered with a global quantitative hedge fund operating who are seeking an exceptional Developer to help build the next generation of low-latency trading applications. This is a rare opportunity to work at the intersection of finance and technology, where … your code directly impacts trading decisions in real-time markets, working on mission critical systems. You will design and develop high-performance, low-latency trading systems using modern C++ and build responsive interfaces for traders and analysts. Essential Skills Experience: 4+ years of hands-on development experience in high-performance systems using C++ Proven experience working in both More ❯