1 to 25 of 36 Remote Performance Optimisation Jobs in the City of London

reviewed until WC 3rd November We’re partnering with a global investment bank to hire an exceptional Software Engineer to join a flagship team delivering a next-generation, high-performance derivatives risk platform . This is a mission-critical front-office role working on real-time distributed systems with exceptional technical standards. You’ll be part of a high … Python or Java , ideally with working knowledge of another. Rust very desirable Proven experience designing and developing complex, distributed, real-time systems . Deep understanding of software architecture, concurrency, performance optimisation , and system reliability . Demonstrable front-end engineering experience using JavaScript, TypeScript, Angular or React Familiarity with containerisation (Kubernetes, Docker) and modern DevOps practices . Experience in More ❯

What you’ll do: Design and build sophisticated React applications integrating with Microsoft Word, M365, and other Office products using Office.js. Write clean, scalable, and maintainable code while driving performance and reliability. Collaborate with product, design, and engineering teams to deliver user-focused, accessible features. Contribute to architectural discussions and help shape the evolution of our tech stack. Mentor … and collaboration skills in English. Proven ability to work independently while contributing effectively to team goals. Experience working successfully in hybrid or remote development environments. Solid understanding of React performance optimisation (e.g. memoisation, code splitting, avoiding unnecessary re-renders). Experience with Git, version control best practices, and CI/CD pipelines. We’ll be lucky if you More ❯

a forward-thinking global firm that’s redefining the future of finance through technology. They are looking for a Front-End React Engineer who’s passionate about clean design, performance, and scalability, someone who thrives on combining creativity with technical precision. The Opportunity You’ll join a dynamic development team, responsible for building the tools, platforms, and applications that … Apollo Client , and GraphQL/REST APIs . Experience working in a cloud-native environment ( AWS or Azure ). Familiarity with data streaming (WebSockets, chunked responses) and front-end performance optimisation . Strong understanding of testing frameworks (unit, integration, E2E) - Playwright experience a plus. Bonus points for knowledge of Material UI or other design systems, and data visualisation More ❯

implementation of ML pipelines, APIs, and data integration workflows. Operational Excellence: Contribute to defining reusable development patterns, enforcing coding standards, and implementing MLOps best practices that support version control, performance optimisation, and maintainability. Cross-Disciplinary Collaboration: Work side-by-side with data scientists, product managers, platform engineers, and QA teams to align on technical requirements, delivery timelines, and More ❯

CloudWatch AWS SDKs, Boto3, and serverless architecture patterns Strong programming skills in Python and Apache Spark Proven experience in Snowflake data engineering, including: Snowflake SQL, Snowpipe, Streams & Tasks, and performance optimization Integration with AWS services and orchestration tools Expertise in data integration patterns, ETL/ELT, and data pipeline orchestration Experience with data quality frameworks, metadata management, and data More ❯

system Develop high-quality, scalable, and responsive UI components using React, TypeScript, and JavaScript Work collaboratively with a highly experienced engineering community Implement best practices for code quality, testing, performance, and maintainability Contribute to architectural discussions and technical decision-making Work with backend teams leveraging C# and .NET to ensure seamless integration Support continuous improvement across the engineering organisation … years of professional experience as a frontend or full-stack engineer Strong hands-on expertise with React, TypeScript, and JavaScript Solid understanding of modern frontend tooling, state management, performance optimisation, and UI architecture Experience collaborating with backend teams (C#/.NET exposure beneficial) Ability to work in a highly technical environment and contribute to design and architectural decisions More ❯

Up to c. £225k Comp Package | Hybrid Working - 3 Days in Office] Role Overview We’re representing a global trading and digital assets firm at the forefront of high-performance technology and infrastructure innovation. The business is seeking a Site Reliability & Infrastructure Engineer to help design, automate, and scale the systems that underpin its global trading platforms. This role … AWS) and on-prem environments Implement automation across the stack using Infrastructure-as-Code principles (Terraform, Ansible, or similar) Administer and optimise Kubernetes clusters across multiple regions, improving resilience, performance, and visibility Develop tools and scripts in Python or Go to automate monitoring, configuration, and incident response workflows Contribute to on-prem colocation expansion projects, introducing low-latency engineering … practices into the infrastructure Optimise Linux systems for performance and reliability, including kernel tuning and networking configuration Partner with development and platform teams to embed SRE best practices, reducing manual toil through automation and observability Drive improvements in monitoring, alerting, and log collection pipelines to enhance system insight and uptime Participate in architecture and design reviews, guiding platform evolution More ❯

to secure a Senior TM1 Developer this is a hands-on role. Will own & develop IBM Planning Analytics (TM1). The role will focus on enabling strategic Financial Planning & Performance reporting. Will lead the design, development & continuous improvement of IBM Planning Analytics (TM1). Role: Partner with Finance, FP&A and Commercial teams - understand planning, budgeting & forecasting needs. TM1 …/IBM Planning Analytics - models, cubes, dimensions and hierarchies. Build & Optimise TI Processes & TM1 Rules - automate data loads, calculations and business logic. Own Technical Development across TM1 - ensuring high performance, scalability & best-practice model design. Integrate TM1 with ERP systems (e.g., SAP) & other data sources - ensure accurate, consistent data flow. Lead improvements to existing processes - proactively enhancing efficiency and … automation with Alteryx - provide insights to support commercial decision-making. Technical Skills Required: TM1 - IBM Planning Analytics - Strong hands-on experience with Turbo Integrator (TI) scripting TM1 Rules, feeders & performance optimisation/cube, dimension & hierarchy design Building scalable, high-performance Planning, Budgeting & Forecasting Models End-to-end TM1 development lifecycle - upgrades, configuration & system administration Integration experience with More ❯

Solutions Candidate Assessment Process: LeetCode-Style Coding Challenge Designed to evaluate algorithmic problem-solving skills Focus on efficient, optimised solutions Challenges will test: Data Structures Algorithm Design Computational Thinking Performance Optimisation Ideal Candidate Profile: Academic and Professional Requirements: Minimum Qualification: Degree/Masters/PhD in Computing, Data Science, or Equivalent Proven Commercial Experience as a Back-End More ❯

and Vercel for front-end deployments Scale: Multi-region replication, 3-cloud backups, and private Azure failover Nice to Haves Experience with Kubernetes or migration to Fargate Background in performance optimisation for large-scale data systems Exposure to analytics, media, or streaming environments Strong mentoring or leadership experience in a small engineering team Why Join This is your More ❯

solutions, with a preference for experience in both relational databases like SQL Server and NoSQL databases like MongoDB or CosmosDB. debugging and troubleshooting skills within the .NET environment, including performance optimization and monitoring. Familiarity with a range of software development tools, such as source code management (e.g. Azure DevOps, Git), build and release management (e.g. Azure DevOps Pipelines) and More ❯

AWS Bedrock, SageMaker , or GCP Vertex AI to deliver scalable cloud-based systems. Implementing strong MLOps and LLMOps practices - from CI/CD and model monitoring to cost and performance optimisation. Partnering with Data Engineers to ensure the pipelines and data structures feeding the models are robust and scalable. Keeping an eye on what's next - new GenAI frameworks More ❯

Collaborate with quants and traders to test and deploy new ideas Build and maintain robust, scalable codebases for live and simulated trading Contribute to continuous improvement across data quality, performance, and reliability Requirements 1–3 years’ professional software development experience (Python preferred) Experience building or maintaining back-testing systems , APIs, or data tools Strong understanding of algorithms, data structures … and performance optimisation Analytical mindset with interest in systematic trading and quantitative research Nice to Have Exposure to trading systems, market data, or algo/bot development Familiarity with numerical libraries (NumPy, Pandas, Numba, etc.) Understanding of version control, CI/CD, or distributed computing More ❯

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 More ❯

and deliver an actionable ML strategy that drives engagement, conversion, and growth. Oversee the design, training, and deployment of search and recommendation models — from data strategy to monitoring and performance optimisation. Collaborate with platform and MLOps teams to ensure robust, efficient, and scalable ML workflows (including CI/CD, feature management, and monitoring). Share insights and best practices More ❯

AI solutions. - Platform & Operations (MLOps): Deploy and operate services on Azure; implement CI/CD and Infrastructure as Code; add monitoring, logging, and observability; ensure reliability, fault tolerance, and performance optimization. - Governance & Security: Enforce data privacy, ethical AI practices, and access controls; mitigate risks like prompt injection; establish model versioning, bias mitigation, and reproducibility best practices. - Software Engineering & Collaboration More ❯

drive their mobile app experience to the next level. 💼 The Role As a React Native Technical Lead , you’ll take ownership of their mobile app development — from architecture and performance to delivery and deployment. This is a fully hands-on position where you’ll still be coding daily while leading by example, mentoring engineers, and setting the technical direction … emerging trends in mobile and EdTech technology 💡 What They’re Looking For Proven experience building and delivering production-grade React Native applications Strong understanding of TypeScript , React , and mobile performance optimisation Experience integrating APIs, CI/CD pipelines, and app store deployments Ability to make architectural decisions and lead technical discussions Passion for education, user experience, and clean More ❯

v16–v19+). Build and maintain integrations between Endur and internal/external systems. Collaborate with business analysts, traders, and risk teams to deliver technical solutions. Support release cycles, performance optimisation, and DevOps practices. Contribute to ongoing digital transformation and trading platform modernisation initiatives. Key Skills & Experience Strong experience in Endur development (v16+). Expertise in JVS, .NET More ❯

have managed complex, Global products. Read on for more details Experience required: Technical proficiency:Familiarity with Azure services (e.g., Data Lake, Synapse, Fabric) and Databricks for data engineering, analytics, performance optimisation, and governance. Experience with implementing and optimising scalable cloud infrastructure is highly valued. Backlog management:Demonstrated expertise in maintaining and prioritizing product backlogs, writing detailed user stories More ❯

have managed complex, Global products. Read on for more details Experience required: Technical proficiency:Familiarity with Azure services (e.g., Data Lake, Synapse, Fabric) and Databricks for data engineering, analytics, performance optimisation, and governance. Experience with implementing and optimising scalable cloud infrastructure is highly valued. Backlog management:Demonstrated expertise in maintaining and prioritizing product backlogs, writing detailed user stories More ❯

has a significant backlog of products to onboard , so they are looking for a developer who can deliver immediate impact — coding, configuring, and optimising Endur to ensure scalability and performance when upgrading them from version 18 to 25. As a C# Developer focusing on Endur, you’ll work closely with business users, analysts, and other technologists to deliver solutions … Experience Required: 7+ years of hands-on C# development, specifically in .Net Core. Exposure to working on OpenComponents or AVS is a bonus but not necessary. Strong experience with performance optimisation and good logic within C#. Previous experience in ETRM development , ideally across physical commodities , ideally gas and power. Experience working in hybrid BA/Dev teams delivering More ❯

will drive their front end solution and will have 5-8 years experience working as Front End Engineer. This will be developing UI components in Typescript, working on web performance optimisation, ensuring code quality through unit testing. Experience integrating frontend components with Headless CMS. The role is hybrid with 2-3 working days in their central London office. More ❯

with the frontend team to integrate frontend components with server-side logic. Work with database administrator to ensure optimal data storage and retrieval. Optimize server applications for maximum speed, performance, and scalability. Troubleshoot and debug server issues, providing timely solutions. Implement security and data protection measures. Keep up to date with emerging trends, technologies, and best practices in backend … service technologies. Understanding of DevOps practices and CI/CD pipelines. Familiarity with testing frameworks and test-driven development. Security awareness and the ability to implement security best practices. Performance optimization and profiling skills. Experience with Azure cloud computing platforms. Knowledge of version control systems, such as Git. Knowledge of containerization technologies (Docker, Kubernetes) is advantageous. Able to work More ❯

build the backbone of our trading operations. RESPONSABILITIES Design & Maintain Infrastructure: Architect, deploy, and manage a highly resilient AWS-based infrastructure to support high-frequency trading (HFT) strategies. Enhance Performance: Collaborate with developers and traders to identify and resolve performance bottlenecks, ensuring optimal low-latency trading in a fast-paced environment. Drive Automation: Create automation scripts and tools … s production trading infrastructure, including automating real-time and batch jobs. Resolve Technical Issues: Troubleshoot and resolve technical problems such as server downtime and network connectivity issues. Monitor & Improve Performance: Proactively monitor system performance, identify and address potential bottlenecks, and ensure seamless trading operations. SKILLS Proven Expertise: At least 5 years of experience in a senior DevOps role … within high-frequency trading (HFT) environments in the cryptocurrency sector. Experience working at AWS or Binance is a plus. Performance Optimization: Proficient in optimizing system performance across hardware, software, system, and network levels to reduce latency and enhance throughput. Cloud Mastery: Extensive expertise with AWS is essential, with insider knowledge preferred. Familiarity with additional cloud platforms is a More ❯

used by enterprise customers, using React , TypeScript , and Next.js . You’ll work across the full front‐end life cycle — from architecture and design collaboration, through to deployment and optimisation — delivering robust, performant, and accessible user interfaces. You’ll join a highly collaborative team where your voice will matter, and your work will be visible at scale. What You … ll Do Build and maintain modern web applications using React , TypeScript , and Next.js . Translate UI/UX designs into responsive, accessible and high‐performance user interfaces. Collaborate strategically with backend engineers, product owners and designers to deliver end‐to‐end solutions. Write clean, tested, maintainable code and set best‐practice standards for the front‐end. Optimize web performance … a bonus). Experience with testing frameworks (e.g., Jest , React Testing Library ). Comfortable with CI/CD pipelines, version control ( Git ), modern build tools and an eye for performance optimisation. Strong understanding of scalable front‐end architecture, responsive design, accessibility standards and code maintainability. Nice to Have Experience with server‐side rendering or static site generation (Next.js). More ❯