226 to 250 of 391 Performance Tuning Jobs in England

+ Pension/Bonus Join a leading financial technology and trading organisation driving innovation in electronic markets. As an eFX Software Engineer, you’ll design and deliver high-performance, low-latency trading solutions that underpin mission-critical systems. This role offers the chance to work on cutting-edge technology where speed, scalability, and resilience are key. About the Role … Lead the design and development of secure, high-performance eFX systems Define and evolve Java patterns and techniques optimised for ultra-low latency (<40μs) Architect fault-tolerant, scalable trading systems Influence technical strategy, architecture, and product roadmaps Collaborate with multiple teams to deliver best-in-class E-trading platforms Ensure all solutions meet security, compliance, and performance standards … level Java development, including low-GC and lock-free patterns Proven background in FX trading systems, pricing, and risk management Deep understanding of CPU architecture, cache optimisation, and Linux performance tuning Expertise in networking and messaging (TCP, UDP, Multicast, FIX) Knowledge of quantitative instruments and algorithmic trading Experience implementing controls in automated trading environments Skilled in TDD, automated More ❯

+ Pension/Bonus Join a leading financial technology and trading organisation driving innovation in electronic markets. As an eFX Software Engineer, you’ll design and deliver high-performance, low-latency trading solutions that underpin mission-critical systems. This role offers the chance to work on cutting-edge technology where speed, scalability, and resilience are key. About the Role … Lead the design and development of secure, high-performance eFX systems Define and evolve Java patterns and techniques optimised for ultra-low latency (<40μs) Architect fault-tolerant, scalable trading systems Influence technical strategy, architecture, and product roadmaps Collaborate with multiple teams to deliver best-in-class E-trading platforms Ensure all solutions meet security, compliance, and performance standards … level Java development, including low-GC and lock-free patterns Proven background in FX trading systems, pricing, and risk management Deep understanding of CPU architecture, cache optimisation, and Linux performance tuning Expertise in networking and messaging (TCP, UDP, Multicast, FIX) Knowledge of quantitative instruments and algorithmic trading Experience implementing controls in automated trading environments Skilled in TDD, automated More ❯

+ benefits/Bonus Join a leading financial technology and trading organisation driving innovation in electronic markets. As an eFX Software Engineer, you'll design and deliver high-performance, low-latency trading solutions that underpin mission-critical systems. This role offers the chance to work on cutting-edge technology where speed, scalability, and resilience are key. About the Role … Lead the design and development of secure, high-performance eFX systems Define and evolve Java patterns and techniques optimised for ultra-low latency (<40s) Architect fault-tolerant, scalable trading systems Influence technical strategy, architecture, and product roadmaps Collaborate with multiple teams to deliver best-in-class E-trading platforms Ensure all solutions meet security, compliance, and performance standards … level Java development, including low-GC and lock-free patterns Proven background in FX trading systems, pricing, and risk management Deep understanding of CPU architecture, cache optimisation, and Linux performance tuning Expertise in networking and messaging (TCP, UDP, Multicast, FIX) Knowledge of quantitative instruments and algorithmic trading Experience implementing controls in automated trading environments Skilled in TDD, automated More ❯

+ benefits/Bonus Join a leading financial technology and trading organisation driving innovation in electronic markets. As an eFX Software Engineer, you'll design and deliver high-performance, low-latency trading solutions that underpin mission-critical systems. This role offers the chance to work on cutting-edge technology where speed, scalability, and resilience are key. About the Role … Lead the design and development of secure, high-performance eFX systems Define and evolve Java patterns and techniques optimised for ultra-low latency (<40μs) Architect fault-tolerant, scalable trading systems Influence technical strategy, architecture, and product roadmaps Collaborate with multiple teams to deliver best-in-class E-trading platforms Ensure all solutions meet security, compliance, and performance standards … level Java development, including low-GC and lock-free patterns Proven background in FX trading systems, pricing, and risk management Deep understanding of CPU architecture, cache optimisation, and Linux performance tuning Expertise in networking and messaging (TCP, UDP, Multicast, FIX) Knowledge of quantitative instruments and algorithmic trading Experience implementing controls in automated trading environments Skilled in TDD, automated More ❯

Web Developer - SaaS - Swindon (Hybrid, 3 Days in Office) (Tech stack: Web Developer, .NET Framework, WebForms, ASP.NET MVC, React, TypeScript, SCSS, Accessibility, API Integration, Performance Optimisation, Testing, Front End Developer) Our client is an established technology business that builds and maintains sophisticated digital platforms used across multiple sectors. They're embarking on a major UI modernisation programme, evolving their … and error handling. Develop and maintain a reusable component library and manage CSS architecture, responsive layouts, and theming. Ensure accessibility and semantic HTML standards are met. Optimise front-end performance, applying modern best practices. Implement client-side authentication flows and manage secure sessions. Write and maintain front-end tests covering key user journeys. Own and maintain front-end tooling … state management. Deep understanding of HTML5, CSS3, modern JavaScript/TypeScript, responsive design, and browser behaviour. Hands-on experience with accessibility standards (WCAG), semantic markup, and ARIA. Knowledge of performance tuning techniques including lazy loading, code splitting, and asset optimisation. Experience consuming secure REST APIs from the browser. Familiarity with front-end testing frameworks such as Jest, React More ❯

or PL/SQL environments. Build and maintain REST and SOAP APIs , supporting seamless system integrations. Create and convert reports using RERX, ARC, and Xtra , applying best practices for performance and maintainability. Use scripting (PowerShell, Liquid) to automate processes and streamline delivery. Conduct system testing, performance tuning, and troubleshooting to identify and resolve complex technical issues. Support More ❯

or PL/SQL environments. Build and maintain REST and SOAP APIs , supporting seamless system integrations. Create and convert reports using RERX, ARC, and Xtra , applying best practices for performance and maintainability. Use scripting (PowerShell, Liquid) to automate processes and streamline delivery. Conduct system testing, performance tuning, and troubleshooting to identify and resolve complex technical issues. Support More ❯

support and maintenance for Unix and Linux environments (Solaris and Red Hat), ensuring high system availability, rapid issue resolution, and compliance with security standards. You'll handle incident management, performance tuning, and patching, as well as contribute to documentation and knowledge sharing across the team. The role is based on-site in Barrow five days a week due … schedule to support critical operations. Key responsibilities Monitor, maintain, and troubleshoot Unix/Linux systems in production and development environments Apply regular patches and updates to ensure security and performance compliance Respond to alerts, incidents, and service requests, resolving technical issues within SLA Manage user accounts, permissions, and file systems Automate routine administration tasks using Bash or Python scripting More ❯

Lake) Automate and scale model training pipelines in close partnership with ML engineers Deploy, observe, and improve pipelines using Docker, Kubernetes, Terraform, or dbt Champion data reliability, scalability, and performance across the platform 🧩 The Tech Environment You’ll likely be working with some combination of: Languages: Python, Scala, Go Streaming: Kafka/Flink/Spark Structured Streaming Workflow orchestration … AWS/GCP/Azure 🌍 What They’re Looking For Proven experience building scalable data pipelines in real-time or near real-time environments Strong background in data architecture, performance tuning, and distributed systems Comfort working end-to-end - from data ingestion to model-ready outputs An interest in AI, ML ops, and data-driven product development Someone More ❯

Lake) Automate and scale model training pipelines in close partnership with ML engineers Deploy, observe, and improve pipelines using Docker, Kubernetes, Terraform, or dbt Champion data reliability, scalability, and performance across the platform 🧩 The Tech Environment You’ll likely be working with some combination of: Languages: Python, Scala, Go Streaming: Kafka/Flink/Spark Structured Streaming Workflow orchestration … AWS/GCP/Azure 🌍 What They’re Looking For Proven experience building scalable data pipelines in real-time or near real-time environments Strong background in data architecture, performance tuning, and distributed systems Comfort working end-to-end - from data ingestion to model-ready outputs An interest in AI, ML ops, and data-driven product development Someone More ❯

to Work With: Modern microservices architecture powering high-volume systems Containerisation using Docker and Kubernetes for scalable deployments Cloud-native platforms and automated CI/CD pipelines Real-time performance engineering and distributed computing challenges Secure development practices with a focus on system architecture and compliance Key Responsibilities: Advocating TDD and solid development practices Providing technical leadership and peer … provide support What You'll Need: Experience working on large commercial systems Strong skills in C#, .NET Core, and Web APIs Database experience, working with both SQL and NoSQL Performance tuning and optimisation expertise Contact Philip Boltt at Lorien Global for more information. IND_PC1 Carbon60, Lorien & SRG - The Impellam Group STEM Portfolio are acting as an Employment More ❯

including RBAC, SSO, token policies, and pseudonymisation frameworks Support batch and streaming data flows using technologies like Kafka, Airflow, and Terraform Monitor and optimise cloud resource usage to ensure performance and cost efficiency Collaborate with cross-functional teams on architecture decisions, technical designs, and data governance standards You Will Have: Proven hands-on expertise in data modelling with a … environments Strong understanding of governance frameworks, access controls, and data protection policies Familiarity with Databricks, Snowflake, AWS, and modern data infrastructure patterns Excellent SQL skills and a focus on performance tuning, data integrity, and reusable design patterns This is an opportunity to shape the blueprint of a data-driven organisation, working with cutting-edge cloud and AI technologies More ❯

including RBAC, SSO, token policies, and pseudonymisation frameworks Support batch and streaming data flows using technologies like Kafka, Airflow, and Terraform Monitor and optimise cloud resource usage to ensure performance and cost efficiency Collaborate with cross-functional teams on architecture decisions, technical designs, and data governance standards You Will Have: Proven hands-on expertise in data modelling with a … environments Strong understanding of governance frameworks, access controls, and data protection policies Familiarity with Databricks, Snowflake, AWS, and modern data infrastructure patterns Excellent SQL skills and a focus on performance tuning, data integrity, and reusable design patterns This is an opportunity to shape the blueprint of a data-driven organisation, working with cutting-edge cloud and AI technologies More ❯

core principles by promoting in-app and side-by-side extensibility patterns, RAP model adoption, and reduction of custom code footprint during migration. Analyse and troubleshoot BTP integration latency, performance and throughput issues across ECC, S/4HANA, Fiori and cloud-based extensions, ensuring robust monitoring and error handling. Design and implement Fiori/UI5 applications and modern user … extensibility practices. As a technical design authority, provide thought leadership to partner ABAP development teams (ECC + S/4HANA) including design reviews, coding standards, reusable framework creation, and performance optimization. Platform Support: Advise technical teams on performance, scalability, versioning, reliability, monitoring, and other operational concerns of SAP solutions. Support stakeholders in troubleshooting with existing solutions. Accountability for … the role To thrive in this role, the essential criteria you’ll need is: Extensive experience of SAP ABAP development experience on ECC and S/4HANA including enhancements, performance tuning, BAdIs, user exits, interfaces, proxy frameworks and IS-U ABAP preferred. Proven hands-on experience in S/4HANA ABAP including CDS Views, AMDP, OData services, S More ❯

growth, system resilience, and platform evolution. What will I be doing: Design, develop, and optimise scalable backend services in Python, leveraging FastAPI. Lead architectural discussions with a focus on performance, scalability, and reliability. Deliver complex features end-to-end - from design through deployment and monitoring. Provide mentorship through code reviews, technical guidance, and best practices. Collaborate with Product, Design … Solid expertise in microservices, APIs, messaging patterns, and distributed systems. Proficient with cloud platforms (AWS, GCP, Azure) and containerisation (Docker; Kubernetes preferred). Strong engineering fundamentals - testing, clean code, performance tuning, and algorithms. Experience with relational and non-relational databases (PostgreSQL, MongoDB). Comfortable working in agile, fast-moving environments with high ownership. Curious about new technology, with More ❯

Engineer – Real-Time Payments Engineering Fintech We’re looking for an experienced Java Software Engineer to join a global Fintech based in South West London. The company develops high-performance technology solutions for leading financial institutions, helping them strengthen and modernise their payments capabilities. About the role You’ll join the core engineering team responsible for building and enhancing … of Reactive Programming concepts with Akka, WebFlux, RxJava etc. Experience working with microservices and distributed systems Background with Kafka and JMS related messaging tools Knowledge of multithreading, concurrency, and performance tuning Familiarity with AWS and MongoDB Previous experience in financial services, ideally within payments Why join Work on systems used by major global banks Be part of a More ❯

define, design, and ship new features. Write unit tests to ensure code quality and reliability. Participate in Agile ceremonies and contribute to sprint planning, reviews, and retrospectives. Optimize application performance and troubleshoot issues across a wide range of Android devices. Stay up to date with the latest Android development trends and tools. Your Profile Essential skills/knowledge/… skills/knowledge/experience: (As applicable) Exposure to CI/CD tools and mobile DevOps practices. Familiarity with Firebase, Google Play Console, and app deployment processes. Experience with performance tuning and memory optimization. Knowledge of security best practices in mobile development.. More ❯

Systems Software Engineer (Python) Are you a top-tier Software Engineer with a passion for high-performance systems and a knack for solving complex infrastructure challenges? We are seeking an elite developer to join a rapidly growing, highly respected HFT company that operates at the cutting edge of its industry. This isn't a typical infrastructure support role. Our … class blend of software development and systems knowledge: Python is essential, including building production-grade, highly reliable systems. A comprehensive understanding of the Linux operating system, including its internals, performance tuning, and low-level functionalities. Strong knowledge of networking concepts (TCP/IP, routing, load balancing, etc.) and experience troubleshooting and optimising network performance at the system … package, which commonly includes: Health and Wellness benefits like fully covered health insurance, dental, vision, life insurance, and mental health programs. Financial benefits such as a generous pension and performance bonuses. Office Perks including free daily meals, snacks, drinks, commuter benefits, a fitness stipend or on-site gym, and relocation assistance. If you are an experienced Systems Software Engineer More ❯

maintain the library of system prompts for ticket summarization, theme extraction, sentiment analysis, and qualitative insights Define reporting standards: Set quality bars for what makes a great dashboard (agent performance, app store trends, CSAT drivers, topic evolution, etc.) Optimize RAG pipelines: Design retrieval strategies and grounding approaches for report generation to ensure factual, relevant outputs Customer-Facing Analytics & Enablement … new features, validate AI outputs for accuracy and relevance, ensure quality before launch Operations & Optimization (10%) Monitor report health: Track delivery, engagement, and quality metrics; debug when outputs degrade Performance tuning: Optimize report generation costs and latency; balance API usage with quality Document everything: Maintain clear documentation for prompts, templates, and best practices What Makes You a Great More ❯

maintain the library of system prompts for ticket summarization, theme extraction, sentiment analysis, and qualitative insights Define reporting standards: Set quality bars for what makes a great dashboard (agent performance, app store trends, CSAT drivers, topic evolution, etc.) Optimize RAG pipelines: Design retrieval strategies and grounding approaches for report generation to ensure factual, relevant outputs Customer-Facing Analytics & Enablement … new features, validate AI outputs for accuracy and relevance, ensure quality before launch Operations & Optimization (10%) Monitor report health: Track delivery, engagement, and quality metrics; debug when outputs degrade Performance tuning: Optimize report generation costs and latency; balance API usage with quality Document everything: Maintain clear documentation for prompts, templates, and best practices What Makes You a Great More ❯

AWS knowledge, IaC expertise with Terraform and Ansible, and a proven track record leading high-impact cloud projects. You'll understand cloud security and governance inside-out, thrive on performance tuning, and be a confident communicator with solid stakeholder skills. Familiarity with GitHub, WAFs, monitoring tools, and serverless tech like AWS Lambda is key. Bonus points for experience More ❯

cloud resources including CloudWatch for logging and alerting, DynamoDB for database management, and AWS Lambda for serverless compute tasks related to project workflows. Implement best practices for environment stability, performance tuning, and security compliance. Produce detailed technical documentation, status reports, and issue logs for ongoing support and knowledge sharing. Communicate effectively with cross-functional teams including developers, infrastructure More ❯

gaming, or e-commerce Hands-on experience with event-based tracking and analytics tools (Mixpanel, Segment, etc.), including the design and ownership of event taxonomies Strong SQL skills (CTEs, performance tuning) and proficiency with visualisation tools such as Mixpanel, Power BI, or Looker Skilled in cohort analysis, funnel tracking, retention metrics, and LTV modelling Familiar with experimentation and More ❯

What you'll need to succeed To be a perfect fit for this role, you will have experience in: Building and maintaining Java applications (8-17) Skilled in SQL performance tuning and database design Hands-on AWS experience (EC2, RDS, S3, networking) Calm under pressure, methodical in debugging Passionate about setting technical strategy and mentoring others And will More ❯

based services to surface AI insights and automation directly in the UI Creating reusable components and libraries that accelerate development across the team Keeping quality high through modern testing, performance tuning, and CI/CD practices Working closely with product, UX, AI engineering, and DevOps teams to align front-end features with real user needs Taking part in More ❯