go-live confidence for the biggest retail brands. Learn more about us here. This is an exciting opportunity to join Spike at a time when we are growing our Performance practice . We are looking for Performance Engineers to join us working as part of a team executing effective and professional technical engineering services across our growing … client portfolio on different projects. You will use a wide variety of Performance Testing solutions, technologies, and tools and contribute to the achievement of business objectives by executing technical work with a level of supervision. Key responsibilities Contributes to the successful completion of technical areas within projects. Develops and executes performance testing throughout the complete development lifecycle, from … goals. Accurately identifies project risks and reports effectively to relevant stakeholders. Manages issues, risks, actions, dependencies, and defects to the success of the project. Required skills Experience of delivering performance testing throughout the software delivery lifecycle. Experience of analysing performance issues in at least one performance test tool and experience of application and infrastructure monitoring tools. Ability More ❯
a leading quantitative crypto trading firm building globally distributed, ultra-low-latency systems that power their research and execution platform. Youll work at the intersection of infrastructure, software, and performanceengineering - solving deep technical problems at scale. What youll do: Own and optimise infrastructure behind a 24/7 web data and trading platform spanning multiple clouds and … and comfortable debugging distributed systems. Experience in high-throughput, low-latency, or large-scale environments (finance, trading, or scraping preferred). If youre an engineer who loves optimisation, systems performance, and solving real production challenges - please apply. More ❯
london (city of london), south east england, united kingdom
Tribus
a leading quantitative crypto trading firm building globally distributed, ultra-low-latency systems that power their research and execution platform. Youll work at the intersection of infrastructure, software, and performanceengineering - solving deep technical problems at scale. What youll do: Own and optimise infrastructure behind a 24/7 web data and trading platform spanning multiple clouds and … and comfortable debugging distributed systems. Experience in high-throughput, low-latency, or large-scale environments (finance, trading, or scraping preferred). If youre an engineer who loves optimisation, systems performance, and solving real production challenges - please apply. 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 performanceengineering - 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 ❯
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 performanceengineering - 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 ❯
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 performanceengineering - 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 ❯
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 performanceengineering - 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 ❯
Reigate, England, United Kingdom Hybrid / WFH Options
esure Group
exceptional service, to deliver personalised experiences that meet our customers ever-changing needs today and in the future. Role description We are currently recruiting for an Application Reliability and performance Engineer to join our Team. We are seeking a high motivated individual to bring a diverse skill set and proactive mindset to help ensure the stability, efficiency, and resilience … query language and PLSQL Agile principles and ways of working Excellent client-facing communication skills DevOps mindset Excellent problem-solving abilities Automation Core AWS Services & Infrastructure as Code Application Performance Optimisation What’s in it for you?: Competitive salary that reflects your skills, experience and potential. Discretionary bonus scheme that recognises your hard work and contributions to esure’s More ❯
guildford, south east england, united kingdom Hybrid / WFH Options
esure Group
exceptional service, to deliver personalised experiences that meet our customers ever-changing needs today and in the future. Role description We are currently recruiting for an Application Reliability and performance Engineer to join our Team. We are seeking a high motivated individual to bring a diverse skill set and proactive mindset to help ensure the stability, efficiency, and resilience … query language and PLSQL Agile principles and ways of working Excellent client-facing communication skills DevOps mindset Excellent problem-solving abilities Automation Core AWS Services & Infrastructure as Code Application Performance Optimisation What’s in it for you?: Competitive salary that reflects your skills, experience and potential. Discretionary bonus scheme that recognises your hard work and contributions to esure’s More ❯
Safran is an international high-technology group, operating in the aviation (propulsion, equipment and interiors), defense and space markets. Its core purpose is to contribute to a safer, more sustainable world, where air transport is more environmentally friendly, comfortable and More ❯
Commutable from Stratford-upon-Avon, Alcester, Evesham, or Redditch (Warwickshire Region) Salary: £30,000 per annum plus commission opportunities Contract Type: Permanent, Full-Time Industry: Automotive Technology | ECU Tuning | PerformanceEngineering T his role does not offer sponsorship | Office-based Monday to Friday | Rotational schedule with occasional weekend work (remote access and IT equipment provided) About You, the … work. Someone who finds peace behind a screen, thrives on problem solving, and takes pride in making systems faster, cleaner, and smarter. Our client is a leader in automotive performance software and ECU tuning. You will be part of a specialist technical team supporting a global network of dealers with tuning software, remapping tools, and system diagnostics. The work … basic salary plus commission opportunities. * Full technical training and support from day one. * Career progression within an expanding automotive technology team. * Work with advanced ECU tuning tools and global performance systems. * Supportive, collaborative environment focused on innovation and excellence. This role does not offer sponsorship | Office-based Monday to Friday | Rotational schedule with occasional weekend work (remote access and More ❯
Employment Type: Permanent
Salary: £30000/annum Training | Progression | ECU tech
to service an entire F1 racing car at the pit stop. In Formula 1, every line of code, tool, and application you help develop has a direct impact on performance on the track. In a sport watched by over 525 million fans globally, even the smallest software gain can translate into meaningful lap time improvements. This job has been … created to shape the architectural direction of the team's software ecosystem - building scalable, high-performance tools that help aerodynamicists, performance engineers, and simulation teams make faster, smarter decisions when it counts. What you’ll do Work directly with aerodynamicists and engineers to uncover real requirements, challenge assumptions, and design solutions that improve workflows and decision-making. Define … users, and scale the best concepts into production-ready solutions. Modernise and unify legacy systems, reducing inefficiencies and ensuring platforms evolve alongside team ambitions. Collaborate across Aerodynamics and Vehicle Performance groups, influencing technology choices and promoting best practices. What you’ll need Extensive experience designing and building software systems in complex, engineering-driven environments. Strong C# programming skills More ❯
Months Contract Job Description: We are looking for an exceptional Frontend Lead -Vue.js, Spring MVC, Thymeleaf who is highly hands-on and deeply experienced in Vue.js, Spring Thymeleaf and performance engineering. The ideal candidate will lead the development of a scalable frontend framework that supports both Server-Side Rendering (SSR) and Client-Side Rendering (CSR) while optimizing site performance and user experience. Key Responsibilities Design and build a high-performance frontend framework using Spring MVC, Thymeleaf and Vue.js Implement SSR/CSR hybrid strategies to optimize rendering, SEO, and page performance. Architect and optimize the BFF layer to enhance frontend-backend interactions. Improve frontend performance using lazy loading, predictive prefetching, tree shaking, and edge caching. Collaborate … frontend applications for speed, security, and scalability in GCP environments. Lead, mentor, and coach frontend engineers, promoting technical excellence. Stay up to date with industry trends, especially in frontend performance optimizations. Key Requirements 10+ years of experience in Spring MVC, Thymeleaf and Vue.js and SEO optimization (link removed) Strong JavaScript/TypeScript proficiency with modern ES6+ concepts. Must-have More ❯
london, south east england, united kingdom Hybrid / WFH Options
techstack Recruitment
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 … the edge of whats possible in the browser solving problems of scale, speed, and complexity that ordinary web development never touches. What youll 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 … developers and enterprises worldwide. What youll 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 ❯
london (city of london), south east england, united kingdom Hybrid / WFH Options
techstack Recruitment
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 … the edge of whats possible in the browser solving problems of scale, speed, and complexity that ordinary web development never touches. What youll 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 … developers and enterprises worldwide. What youll 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 ❯
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 ❯
City of London, London, United Kingdom Hybrid / WFH Options
techstack Recruitment
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 ❯
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 ❯
slough, south east england, united kingdom Hybrid / WFH Options
techstack Recruitment
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 ❯
A Senior Systems Performance Architect is sought by this global leader in ICT development to be based at their design centre in Cambridge. The Senior Systems Performance Engineer will be spearheading advanced OS system performance, workload analysis, modelling and simulation for next generation CPU and Mobile operating system architectures. The Senior Systems Performance Architect will be … responsible for identifying execution hotspots, performance metrics, software-hardware co-design and optimisation and for enhancing product performance and energy efficiency. Having successfully completed your Masters (or equiv.) you will have extensive experience with chip performance, CPU microarchitectures, modelling, simulation and software – hardware optimisation. Your background will also include a deep understanding of chip design processes and … system performance modelling, workload analysis and simulation tools (gem5, QEMU etc.). Exposure to software/hardware co-design methodologies would also be a bonus. On offer you will find a very attractive base salary, bonuses and an extensive benefits package. Take that first step to joining this world leading organisation, contact Adrian Wagstaff on +44 1189 840948 or More ❯
A Senior Systems Performance Architect is sought by this global leader in ICT development to be based at their design centre in Cambridge. The Senior Systems Performance Engineer will be spearheading advanced OS system performance, workload analysis, modelling and simulation for next generation CPU and Mobile operating system architectures. The Senior Systems Performance Architect will be … responsible for identifying execution hotspots, performance metrics, software-hardware co-design and optimisation and for enhancing product performance and energy efficiency. Having successfully completed your Masters (or equiv.) you will have extensive experience with chip performance, CPU microarchitectures, modelling, simulation and software – hardware optimisation. Your background will also include a deep understanding of chip design processes and … system performance modelling, workload analysis and simulation tools (gem5, QEMU etc.). Exposure to software/hardware co-design methodologies would also be a bonus. On offer you will find a very attractive base salary, bonuses and an extensive benefits package. Take that first step to joining this world leading organisation, contact Adrian Wagstaff on +44 1189 840948 or More ❯
A Senior Systems Performance Architect is sought by this global leader in ICT development to be based at their design centre in Cambridge. The Senior Systems Performance Engineer will be spearheading advanced OS system performance, workload analysis, modelling and simulation for next generation CPU and Mobile operating system architectures. The Senior Systems Performance Architect will be … responsible for identifying execution hotspots, performance metrics, software-hardware co-design and optimisation and for enhancing product performance and energy efficiency. Having successfully completed your Masters (or equiv.) you will have extensive experience with chip performance, CPU microarchitectures, modelling, simulation and software – hardware optimisation. Your background will also include a deep understanding of chip design processes and … system performance modelling, workload analysis and simulation tools (gem5, QEMU etc.). Exposure to software/hardware co-design methodologies would also be a bonus. On offer you will find a very attractive base salary, bonuses and an extensive benefits package. Take that first step to joining this world leading organisation, contact Adrian Wagstaff on +44 1189 840948 or More ❯
metal Linux to modern build and observability stacks . Linux Platform Engineer – Trading Infrastructure Overview The firm is seeking a Linux Platform Engineer to join a small, high-impact engineering group supporting ML/AI-driven trading. These teams run massive simulation, HPC, and production workloads and depend on ultra-reliable, ultra-fast Linux platforms. The engineer will own … critical infrastructure at scale and help shape the next generation of compute systems. Key Responsibilities Optimize and tune Linux for performance, stability, and low latency . Contribute to kernel-level debugging and system improvements . Automate Linux fleet builds—creating consistent, reproducible systems . Manage Kubernetes cluster infrastructure, networking, and container orchestration. Enhance observability Analyze and optimize networking across … the full TCP/IP stack . Investigate core dumps, memory bottlenecks, and CPU performance issues across distributed systems. Develop Python tooling for internal automation and performance analysis. Debug complex infrastructure challenges across simulation, HPC, and AI-style compute workloads . What You Will Work On Advanced simulation and high-performance computing pipelines. Integrations with internal and More ❯
metal Linux to modern build and observability stacks . Linux Platform Engineer – Trading Infrastructure Overview The firm is seeking a Linux Platform Engineer to join a small, high-impact engineering group supporting ML/AI-driven trading. These teams run massive simulation, HPC, and production workloads and depend on ultra-reliable, ultra-fast Linux platforms. The engineer will own … critical infrastructure at scale and help shape the next generation of compute systems. Key Responsibilities Optimize and tune Linux for performance, stability, and low latency . Contribute to kernel-level debugging and system improvements . Automate Linux fleet builds—creating consistent, reproducible systems . Manage Kubernetes cluster infrastructure, networking, and container orchestration. Enhance observability Analyze and optimize networking across … the full TCP/IP stack . Investigate core dumps, memory bottlenecks, and CPU performance issues across distributed systems. Develop Python tooling for internal automation and performance analysis. Debug complex infrastructure challenges across simulation, HPC, and AI-style compute workloads . What You Will Work On Advanced simulation and high-performance computing pipelines. Integrations with internal and More ❯
As a Systems Performance Engineer, within one of our systems engineering teams, you will provide performance prediction and analysis expertise to major defence programmes, developing the latest Complex Weapons capabilities for the UK Armed Forces in response to advanced threats in all domains (Air, Land, Sea). Expect assignments across concept, assessment or demonstration phase contracts, covering More ❯