26 to 50 of 58 Performance Engineering Jobs in London

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. Youll 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-to … 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 ❯

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 ❯

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 ❯

are looking for an experienced Test Architect/Senior Test Manager 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 ❯

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 ❯

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 ❯

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 ❯

seeking an experienced Senior .NET Engineer to join a dynamic team within the finance industry. You will play a pivotal role in designing and developing robust, scalable, and high-performance systems using the latest .NET and Azure technologies, with a focus on Event Driven Architecture and Event Sourcing. This is an exciting opportunity to join a forward-thinking fintech … implement Event Driven and Event Sourcing systems in Azure Collaborate with cross-functional teams to define technical requirements Mentor and guide junior engineers, promoting best practices and a high-performance engineering culture Conduct code reviews, assess architectural decisions, and suggest process improvements Ensure applications are secure, scalable, resilient, and observable Requirements: Extensive experience developing applications in .NET and … and deployment Hands-on experience with Event Driven Architecture and Event Sourcing principles Strong familiarity with CI/CD processes and automated testing frameworks Proven leadership experience in guiding engineering teams and delivering high-quality software Excellent problem-solving skills and the ability to communicate technical concepts clearly Exposure to financial services or fintech domains is highly desirable If More ❯

is going through the gears, backed by world-class investors, and heading towards a big future. Theyve built a platform already trusted by global enterprise brands and now the engineering team is growing fast to take things to the next level. Youll join as a Senior Backend Engineer , taking ownership of complex Python/Django services that power enterprise … decarbonisation. Expect to design elegant APIs, tackle data-heavy challenges, and collaborate closely with sustainability experts and product teams. What makes this special? High-performance engineering team smart, passionate, and collaborative Big mission accelerating how the worlds largest businesses understand and reduce carbon footprints Cutting-edge scale-up energy late seed, gearing up for Series A, equity on … a great fit if you bring: 7+ years backend experience (Python expertise essential) Strong knowledge of Django (or similar) and API design Experience scaling apps, with an eye for performance and reliability A proactive, problem-solving mindset and love for collaboration Enjoy a collaborative, chic, and modern office environment with team lunches, regular away days, and lots more! Package 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 ❯

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 ❯

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 ❯

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 ❯

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 ❯

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 ❯

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 ❯

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 ❯

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 performance engineering - 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 ❯

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 performance engineering - 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 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 ❯

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 … 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 … 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 ❯

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 ❯