101 to 125 of 156 Performance Tuning Jobs in the City of London

integration between computation, data, and science. You should have Deep experience building and scaling backend systems and distributed applications . Strong coding skills in Python , with an understanding of performance tuning and concurrency. Hands-on experience with Kubernetes , AWS , and modern cloud infrastructure . Proficiency with databases — schema design, performance optimization, and analytics. Familiarity with REST APIs … security best practices. A disciplined engineering mindset — you think about reliability, maintainability, and long-term scalability. Nice-to-haves Experience with MLOps and model-serving infrastructure. Background in high-performance computing or large-scale scientific workloads. Expertise in data pipeline architecture and real-time streaming systems. Knowledge of scientific or biological computing environments . This is a rare opportunity More ❯

integration between computation, data, and science. You should have Deep experience building and scaling backend systems and distributed applications . Strong coding skills in Python , with an understanding of performance tuning and concurrency. Hands-on experience with Kubernetes , AWS , and modern cloud infrastructure . Proficiency with databases — schema design, performance optimization, and analytics. Familiarity with REST APIs … security best practices. A disciplined engineering mindset — you think about reliability, maintainability, and long-term scalability. Nice-to-haves Experience with MLOps and model-serving infrastructure. Background in high-performance computing or large-scale scientific workloads. Expertise in data pipeline architecture and real-time streaming systems. Knowledge of scientific or biological computing environments . This is a rare opportunity More ❯

competitive + excellent bonus + benefits International Capital Markets firm is scaling its London Equities platform and is hiring a Senior TechOps Associate to drive platform reliability, low-latency performance, and controlled change across OMS/EMS, eTrading/algo, market data, and exchange connectivity. You will sit close to the desk and act as the go-to owner …/post-mortems. Safer, faster releases (blue/green, canary, feature flags) in partnership with Trading, Quant, and Engineering. Mature observability (logs/metrics/traces), capacity planning, and performance tuning for low-latency flows. Strong production hygiene and controls aligned to MiFID II/MAR/best-ex. Leadership of the London on-call rota and contribution … Splunk/Geneos. Practical understanding of market microstructure, exchange connectivity, and TCA/controls. Composed, commercially aware communicator with traders and senior leadership. Package & set-up Competitive base + performance bonus, benefits, and flexible hybrid working. A clear runway to platform ownership and team leadership. London HQ; hybrid model. Nice to haves Low-latency tuning experience. Experience with More ❯

Senior TechOps, Equities Platform London, Hybrid International Capital Markets firm is scaling its London Equities platform and is hiring a Senior TechOps Associate to drive platform reliability, low-latency performance, and controlled change across OMS/EMS, eTrading/algo, market data, and exchange connectivity. You will sit close to the desk and act as the go-to owner …/post-mortems. Safer, faster releases (blue/green, canary, feature flags) in partnership with Trading, Quant, and Engineering. Mature observability (logs/metrics/traces), capacity planning, and performance tuning for low-latency flows. Strong production hygiene and controls aligned to MiFID II/MAR/best-ex. Leadership of the London on-call rota and contribution … Splunk/Geneos. Practical understanding of market microstructure, exchange connectivity, and TCA/controls. Composed, commercially aware communicator with traders and senior leadership. Package & set-up Competitive base + performance bonus, benefits, and flexible hybrid working. A clear runway to platform ownership and team leadership. London HQ; hybrid model. Nice to haves Low-latency tuning experience. Experience with More ❯

London to find a highly skilled Front-End Software Engineer to join their world-class engineering team. This is an opportunity to work at the very heart of high-performance trading technology — building ultra-responsive, visually intuitive web interfaces for some of the most demanding users in finance. What You’ll Be Doing: Building high-performance, data-intensive … engineering excellence and code quality are non-negotiable Tech Stack: Languages: TypeScript, JavaScript (ES6+) Frameworks: React, Redux (or similar) Tooling: Webpack, Babel, Jest, ESLint, Git Bonus: Experience with WebSockets, performance profiling, or custom charting libraries (e.g., D3.js, Highcharts) What They’re Looking For: Strong experience with React and modern JavaScript/TypeScript Deep understanding of front-end architecture, performance tuning, and scalable component design Experience in fast-paced environments (finance, trading, gaming, or top-tier tech) Passion for clean, maintainable code and UI craftsmanship Why Join? Collaborate with some of the sharpest minds in trading and technology Contribute to software that drives real-time trading decisions Work in a flat-structured, engineering-led environment with rapid decision More ❯

London to find a highly skilled Front-End Software Engineer to join their world-class engineering team. This is an opportunity to work at the very heart of high-performance trading technology — building ultra-responsive, visually intuitive web interfaces for some of the most demanding users in finance. What You’ll Be Doing: Building high-performance, data-intensive … engineering excellence and code quality are non-negotiable Tech Stack: Languages: TypeScript, JavaScript (ES6+) Frameworks: React, Redux (or similar) Tooling: Webpack, Babel, Jest, ESLint, Git Bonus: Experience with WebSockets, performance profiling, or custom charting libraries (e.g., D3.js, Highcharts) What They’re Looking For: Strong experience with React and modern JavaScript/TypeScript Deep understanding of front-end architecture, performance tuning, and scalable component design Experience in fast-paced environments (finance, trading, gaming, or top-tier tech) Passion for clean, maintainable code and UI craftsmanship Why Join? Collaborate with some of the sharpest minds in trading and technology Contribute to software that drives real-time trading decisions Work in a flat-structured, engineering-led environment with rapid decision More ❯

Strong server-side Java development experience Solid understanding of Java architecture and design patterns Excellent debugging and unit testing skills Experience in front-office environments Knowledge of multi-threading, performance tuning, and memory management Exposure to FX, listed derivatives, smart order routing, and FIX order flow Rate: Up to £825/day , inside IR35 Contract: Initial 6 months More ❯

Strong server-side Java development experience Solid understanding of Java architecture and design patterns Excellent debugging and unit testing skills Experience in front-office environments Knowledge of multi-threading, performance tuning, and memory management Exposure to FX, listed derivatives, smart order routing, and FIX order flow Rate: Up to £825/day , inside IR35 Contract: Initial 6 months More ❯

Systems, or Platform Engineering Deep knowledge of Linux, Python, and shell scripting Proven experience with Kubernetes, observability tooling, and CI/CD frameworks Strong grasp of distributed systems and performance tuning Trading, Crypto or Hedge Fund Experience Experience working in low-latency, high-frequency trading environments Why join: Work on high-impact systems that directly influence trading outcomes More ❯

Systems, or Platform Engineering Deep knowledge of Linux, Python, and shell scripting Proven experience with Kubernetes, observability tooling, and CI/CD frameworks Strong grasp of distributed systems and performance tuning Trading, Crypto or Hedge Fund Experience Experience working in low-latency, high-frequency trading environments Why join: Work on high-impact systems that directly influence trading outcomes More ❯

desktop applications. Design and implement distributed systems for async processing, ML workflows, and asset pipelines. Own authentication, billing, and subscription systems — ensuring reliability and seamless user experience. Drive observability, performance tuning, and deployment automation across the stack. Collaborate closely with product, frontend, and ML teams to deliver features that delight and scale. You should have 5+ years of More ❯

desktop applications. Design and implement distributed systems for async processing, ML workflows, and asset pipelines. Own authentication, billing, and subscription systems — ensuring reliability and seamless user experience. Drive observability, performance tuning, and deployment automation across the stack. Collaborate closely with product, frontend, and ML teams to deliver features that delight and scale. You should have 5+ years of More ❯

result without friction. You’ll have room to experiment, try new approaches, and design systems in a place that backs bold thinking. Key Responsibilities: Build, run, and improve high-performance GPU training and inference clusters with a focus on reliability and automation Design and implement high-throughput data paths, including work on caching, I/O, and data locality … across compute and storage Benchmark, profile, and fix performance issues across compute, network, and orchestration layers Set up clear observability, resilience, and security controls for sensitive research environments Work with Research, Data, and Applied teams to plan GPU and storage capacity and support smoother ML experimentation Technical Skills: Strong experience designing and operating large-scale ML compute clusters Good … understanding of GPU architecture, high-speed networking, and performance tuning for distributed training Experience with modern containerised systems and migrations from traditional schedulers Knowledge of high-throughput storage systems for ML or HPC workloads Solid experience with IaC and CI/CD (Terraform, Argo CD, or similar) What’s on Offer: Salary packages competitive with FAANG businesses An More ❯

result without friction. You’ll have room to experiment, try new approaches, and design systems in a place that backs bold thinking. Key Responsibilities: Build, run, and improve high-performance GPU training and inference clusters with a focus on reliability and automation Design and implement high-throughput data paths, including work on caching, I/O, and data locality … across compute and storage Benchmark, profile, and fix performance issues across compute, network, and orchestration layers Set up clear observability, resilience, and security controls for sensitive research environments Work with Research, Data, and Applied teams to plan GPU and storage capacity and support smoother ML experimentation Technical Skills: Strong experience designing and operating large-scale ML compute clusters Good … understanding of GPU architecture, high-speed networking, and performance tuning for distributed training Experience with modern containerised systems and migrations from traditional schedulers Knowledge of high-throughput storage systems for ML or HPC workloads Solid experience with IaC and CI/CD (Terraform, Argo CD, or similar) What’s on Offer: Salary packages competitive with FAANG businesses An More ❯

systems. What You’ll Do Design, develop, and enhance low-latency, high-throughput trading components. Work on real-time FX pricing, execution, and risk systems. Apply multithreading, concurrency, and performance tuning to deliver sub-millisecond response times. Collaborate with Quant, Trading, and Infrastructure teams to deliver robust, scalable solutions. Drive continuous improvement in system performance, resiliency, and More ❯

law firm is seeking an experienced Applications Operations Analyst to join its London office. This is a fantastic opportunity to play a key role in maintaining and improving the performance, security, and reliability of enterprise applications across a dynamic and fast-paced professional services environment. Reporting to the Manager of Applications Operations, the successful candidate will be responsible for … patching, monitoring, and troubleshooting, while also contributing to process improvement, documentation, and integration stability. The role involves close collaboration with infrastructure, security, and business teams to ensure seamless application performance and user experience. Key Responsibilities: Perform system maintenance, patching, and upgrades in line with change management procedures Monitor application health and performance, proactively resolving issues Manage user access … base articles Identify opportunities for automation and process optimisation Track and report on KPIs, system uptime, and user engagement metrics Collaborate with cross-functional teams to support scalability and performance tuning Ideal Candidate Profile: 3+ years of experience in enterprise application support or IT operations Strong troubleshooting and analytical skills Familiarity with ITSM platforms (e.g., ServiceNow) and monitoring More ❯

law firm is seeking an experienced Applications Operations Analyst to join its London office. This is a fantastic opportunity to play a key role in maintaining and improving the performance, security, and reliability of enterprise applications across a dynamic and fast-paced professional services environment. Reporting to the Manager of Applications Operations, the successful candidate will be responsible for … patching, monitoring, and troubleshooting, while also contributing to process improvement, documentation, and integration stability. The role involves close collaboration with infrastructure, security, and business teams to ensure seamless application performance and user experience. Key Responsibilities: Perform system maintenance, patching, and upgrades in line with change management procedures Monitor application health and performance, proactively resolving issues Manage user access … base articles Identify opportunities for automation and process optimisation Track and report on KPIs, system uptime, and user engagement metrics Collaborate with cross-functional teams to support scalability and performance tuning Ideal Candidate Profile: 3+ years of experience in enterprise application support or IT operations Strong troubleshooting and analytical skills Familiarity with ITSM platforms (e.g., ServiceNow) and monitoring More ❯

We’re working with a leading global investment bank expanding its Front Office FX eTrading team. This is a greenfield build of a next-generation trading platform that is performance-critical, front-office facing, and built for scale and speed. You’ll be joining a team of exceptional technologists delivering cutting-edge solutions across FX Spot, Forwards, and Pricing … trading. Work closely with traders and quants to deliver performant pricing and hedging solutions. Lead components of system re-architecture and optimisation projects. Take ownership of end-to-end performance, from network to JVM tuning. Contribute to a high-performing, globally distributed engineering team. Technical Environment Core Java, Aeron, lock-free/concurrent programming High-performance messaging, distributed … RFQ, and automated hedging systems What We’re Looking For Proven experience designing or building low-latency trading systems (FX or other asset classes). Deep understanding of Java performance tuning, GC optimisation, and threading models. Ability to discuss design decisions and architecture in depth. Front-office experience and a strong understanding of electronic trading workflows. Why Apply More ❯

We’re working with a leading global investment bank expanding its Front Office FX eTrading team. This is a greenfield build of a next-generation trading platform that is performance-critical, front-office facing, and built for scale and speed. You’ll be joining a team of exceptional technologists delivering cutting-edge solutions across FX Spot, Forwards, and Pricing … trading. Work closely with traders and quants to deliver performant pricing and hedging solutions. Lead components of system re-architecture and optimisation projects. Take ownership of end-to-end performance, from network to JVM tuning. Contribute to a high-performing, globally distributed engineering team. Technical Environment Core Java, Aeron, lock-free/concurrent programming High-performance messaging, distributed … RFQ, and automated hedging systems What We’re Looking For Proven experience designing or building low-latency trading systems (FX or other asset classes). Deep understanding of Java performance tuning, GC optimisation, and threading models. Ability to discuss design decisions and architecture in depth. Front-office experience and a strong understanding of electronic trading workflows. Why Apply More ❯

log management, observability, and monitoring frameworks . Knowledge of scripting languages (Python, Shell, or PowerShell) for automation. Familiarity with REST APIs, JSON, and data integration techniques . Experience in performance tuning and troubleshooting Splunk/ELK environments. Strong problem-solving skills with the ability to work in fast-paced environments. Talent Acquisition Executive | UK & Europe Ampstek Services Limited More ❯

log management, observability, and monitoring frameworks . Knowledge of scripting languages (Python, Shell, or PowerShell) for automation. Familiarity with REST APIs, JSON, and data integration techniques . Experience in performance tuning and troubleshooting Splunk/ELK environments. Strong problem-solving skills with the ability to work in fast-paced environments. Talent Acquisition Executive | UK & Europe Ampstek Services Limited More ❯

least 1 full lifecycle Vistex implementations (techno-functional) Demonstrate broad ABAP experience in the areas like Data Dictionary, BAPI, BADI, RFC, ALE/EDI, IDOC, Enhancement, User Exits, LSMW, Performance Tuning, Function Module development. SAP Vistex knowledge in Data Objects, Master Data and Archiving is preferred. Strong technical expertise in Vistex areas like agreements, pricing, and composites Good More ❯

least 1 full lifecycle Vistex implementations (techno-functional) Demonstrate broad ABAP experience in the areas like Data Dictionary, BAPI, BADI, RFC, ALE/EDI, IDOC, Enhancement, User Exits, LSMW, Performance Tuning, Function Module development. SAP Vistex knowledge in Data Objects, Master Data and Archiving is preferred. Strong technical expertise in Vistex areas like agreements, pricing, and composites Good More ❯

leading global FX trading platform as a Java Engineer, contributing to the backbone of ultra-low latency systems powering high-volume electronic trading. This role focuses on building high-performance, globally distributed Java services that enable real-time transaction processing, configuration management, and support for quantitative research and trading teams. Key Responsibilities: Develop scalable backend systems to support high … frequency FX trading Collaborate with quants and traders to deliver platform enhancements Drive performance tuning and solve low-level technical bottlenecks Maintain high standards in testing, documentation, and code quality Tech Stack & Skills: Strong proficiency in core Java Exposure to JavaScript/TypeScript & HTML5 is a plus Deep understanding of data structures, algorithms, and performance optimization Familiar More ❯

leading global FX trading platform as a Java Engineer, contributing to the backbone of ultra-low latency systems powering high-volume electronic trading. This role focuses on building high-performance, globally distributed Java services that enable real-time transaction processing, configuration management, and support for quantitative research and trading teams. Key Responsibilities: Develop scalable backend systems to support high … frequency FX trading Collaborate with quants and traders to deliver platform enhancements Drive performance tuning and solve low-level technical bottlenecks Maintain high standards in testing, documentation, and code quality Tech Stack & Skills: Strong proficiency in core Java Exposure to JavaScript/TypeScript & HTML5 is a plus Deep understanding of data structures, algorithms, and performance optimization Familiar More ❯