1 to 25 of 78 Performance Optimisation Jobs in the City of London

Business Analyst - Financial Banking Candidates will come from highly technical background with a track record of delivering complex, low-level code systems (e.g. C++, Java), with strong knowledge of performance optimisation and latency management along with Networking (TCP, UDP, multicast) and low latency data distribution. Ideally these skills will have been gained in a Low Latency Financial/… ability to learn in the role is a must. Essential Proven track record of specifying and delivering complex, low-level code systems (e.g. C++, Java), with strong knowledge of performance optimisation, latency management, concurrency, and integration considerations. Strong knowledge of networking principles (TCP, UDP, multicast) and experience designing for resilience, throughput, and low-latency data distribution. Expertise in More ❯

Design and build RESTful API endpoints using NodeJS and Express, including detailed API documentation. Database Management: Design, optimize, and maintain complex SQL data models, ensuring efficient data structures, query performance, and reliability. Full-Stack Development: Develop responsive and performant front-end applications using ReactJS, focusing on UX/UI best practices. Integration & Automation: Architect and maintain integrations with external … Proven track record of leading development teams and managing large-scale projects. Database Expertise: In-depth experience with PostgreSQL/SQL, including design of complex schemas, writing queries and performance optimisation. Security & Performance: Deep understanding of application security best practices, performance tuning, and scalable architecture. Problem-Solving: Ability to troubleshoot complex technical issues, with a proactive and … well-being, and continuous growth, ensuring that you have the support and resources to excel both professionally and personally. Competitive Salary: £50,000 - £65,000 per year, with potential performance-based increases. Performance Bonus: Up to 10% annual bonus. Generous Holiday Allowance: 27 days holiday plus bank holidays. Health Insurance: Private health insurance including dental care, vision, and More ❯

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 ❯

operational procedures. What You Bring 3+ years of software engineering experience, preferably focused on market-data infrastructure or quantitative trading systems. Strong Python expertise with a solid grasp of performance optimisation and concurrency. Proven experience designing, building, and tuning tick-data pipelines for high-volume environments. Hands-on experience with Parquet storage; experience with Apache Iceberg or similar … Practical experience with containerisation (Docker) and orchestration platforms (Kubernetes). Strong background in profiling, debugging, and optimising complex data workflows. Experience with timeseries databases (KDB, OneTick) and/or performance-critical C++ components. Deep understanding of financial markets, trading data, and quantitative workflows. Excellent communication skills with the ability to articulate technical solutions to engineers and non-engineers alike. More ❯

strategy, ALM, solution packaging, and deployment pipelines Replace legacy/manual processes with automated, cloud-based workflows Ensure compliance with data protection, security, DLP policies, and environment management Optimise performance and troubleshoot complex issues across low-code and pro-code solutions Mentor developers, champion best practice, and support capability building Stay current with emerging Power Platform, Copilot, and cloud … security Expertise in Power Pages (configuration, security roles, Liquid, templates) Experience with PCF, custom connectors, and API integration Advanced DAX for Power BI reporting Strong testing, debugging, troubleshooting and performance optimisation capability Experience with ALM, DevOps practices, CI/CD pipelines, version control, and code review Knowledge of ITIL, Agile/SAFe, service management and backlog management Azure More ❯

AWS, Azure, GCP) and containerization technologies (e.g., Docker, Kubernetes). Familiarity with DevOps practices and tools for continuous integration and deployment. Solid understanding of system design principles, scalability, and performance optimization. Acxiom is a customer intelligence company that provides data-driven solutions to enable the world’s best marketers to better understand their customers to create better experiences and 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 ❯

learning pipelines and systems Develop infrastructure and tooling to enable deployment, monitoring, and retraining of ML models Work across the full AI delivery lifecycle, from architecture and integration to performance optimisation Collaborate with customers and stakeholders to understand operational constraints and align on solution design Mentor junior engineers and shape internal technical standards for software quality, reliability, and 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 ❯

email: jordanna.ramsey@searchability.com THE OPPORTUNITY A new contract opportunity for an AI Engineer to join a cutting-edge AI Sports company revolutionising how data and machine learning drive athletic performance, fan engagement, and predictive analytics in the sports industry. You’ll be part of a highly skilled R&D team building next-generation AI solutions for real-time insights … performance optimisation, and immersive sports analytics. THE ROLE Design, develop, and deploy AI/ML models focused on sports analytics, predictive modelling, and computer vision. Collaborate with data scientists, software engineers, and sports analysts to translate real-world data into actionable insights. Optimise AI systems for real-time environments, integrating with live data feeds and cloud infrastructure. Research More ❯

feature delivery. Someone who loves solving hard problems, shaping architecture and building products that other engineers love to use. 🧩 What you’ll be getting stuck into • Building polished, high performance UIs for cloud developer workflows • Collaborating closely with backend and platform teams to ship seamless experiences • Shaping scalable frontend architecture and best practices from the ground up • Driving code … quality through testing and performance optimisation • Exploring how AI can enhance both the platform and the end to end experience for developers 🔧 Experience needed • TypeScript and a modern framework such as React or Vue or Svelte • Experience in cloud based environments across AWS or Azure or GCP • Strong focus on performance, scalability and polished UX • Bonus if 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 ❯

robust data pipelines using PostgreSQL and Airflow or Apache Spark Collaborate with frontend/backend developers using Node.js or React Implement best practices in data modelling, ETL processes and performance optimisation Contribute to containerised deployments (Docker/Kubernetes) - experience in this area is desirable, not essential Operate within Agile teams and support DevOps practices What We're Looking More ❯

with React, TypeScipt and NodeJS. Experience configuring, deploying, and monitoring applications on Azure. TDD (Test-Driven Development) experience. Comfortable working with relational and NoSQL databases, including complex queries and performance optimization. Solid understanding of web design patterns, including SOLID principles. Experience working in an agile, collaborative environment. Familiarity with automated testing and CI/CD pipelines. The interview process 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 ❯

stunning and technically robust experiences. Key Responsibilities Develop, implement, and maintain gameplay systems and tools using C++ and Blueprints. Collaborate with designers and artists to integrate content and ensure performance and gameplay quality. Optimise performance across multiple platforms (PC, console, and/or mobile). Debug and resolve technical issues related to gameplay, physics, AI, and networking. Contribute … UE5). Strong C++ programming skills and familiarity with Unreal Blueprints. Proven experience developing and shipping at least one game or interactive 3D project. Good understanding of 3D math, performance optimisation, and debugging tools. Ability to work collaboratively in a fast-paced, cross-functional team. Excellent problem-solving skills and attention to detail. What We Offer Competitive tax … free salary and performance bonuses. Relocation support and visa sponsorship for international hires. Health insurance and annual flight allowance. Creative, collaborative studio culture in the heart of Dubai’s growing tech and gaming scene. Opportunities for career growth and professional development. If this is something of interest, then please do apply here and/or send a copy of More ❯

up to £300k + Equity We are working with an institutionally backed AI startup operating in stealth mode. The company builds large-scale LLMs and the in-house high-performance systems that train and deploy them efficiently. This is an opportunity for engineers from HFT or HPC backgrounds to apply their system-level expertise to a new domain, working … across runtime systems, scheduling, and optimisation to improve the efficiency of complex AI workloads. Overview You will join a small, research-driven team of engineers and scientists developing advanced model architectures and the distributed infrastructure that supports them. The environment combines large-scale compute, low-latency software engineering, and applied machine learning. Requirements Exceptional academic background, typically a Computer … Science (or related) degree from a leading university Proficiency in C++ or Python for high-performance or systems-level work Strong analytical and communication skills Experience with competitive programming or performance optimisation is advantageous Compensation Base salary up to £300k plus equity. More ❯

improve farm economics, productivity, and environmental impact . Key Responsibilities Lead technical strategy and oversee architecture for scalable, data-driven systems. Remain actively hands-on , designing and developing high-performance C#/.NET back-end systems . Mentor and guide a growing team of developers — setting technical standards and driving best practices. Oversee end-to-end solution delivery, ensuring … performance, security, and maintainability. Collaborate cross-functionally with data scientists, agronomists, and stakeholders to shape product direction. Own cloud infrastructure strategy and implementation on Microsoft Azure . Lead innovation in sustainability-focused agricultural technology and analytics . Contribute to recruitment and technical assessment (including coding challenge design and review). Candidate Assessment Process Our selection process includes a LeetCode … style technical challenge to evaluate: Algorithmic problem-solving Data structures and computational efficiency Code quality and optimisation under time constraints Ideal Candidate Profile Academic and Professional Background Degree/Masters/PhD in Computer Science, Data Science, or a related discipline Proven experience as a Back-End Developer/Engineering Lead/CTO in data-heavy environments Demonstrable history More ❯

data, product, and engineering teams, not a 'heads-down coder' type. Top 4 Core Skills Python - workflow automation, data processing, and ETL/ELT development. Snowflake - scalable data architecture, performance optimisation, and governance. SQL - expert-level query writing and optimisation for analytics and transformations. dbt (Data Build Tool) - modular data modelling, testing, documentation, and version control. Key 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 ❯

building cutting-edge financial desktop applications. This role focuses on delivering robust, real-time solutions using modern JavaScript and interoperability standards. Key Responsibilities: Develop front-end components for high-performance desktop applications. Implement asynchronous JavaScript patterns for real-time, event-driven systems. Work with OpenFin APIs for window management and inter-application messaging. Ensure interoperability between applications using FDC3 … standards. Optimize performance and troubleshoot complex issues in production environments. Required Skills: Advanced proficiency in JavaScript, with strong knowledge of asynchronous programming (Promises, async/await, event-driven architecture). Hands-on experience with OpenFin APIs. Understanding of FDC3 protocols for secure, standardised communication. Strong debugging and performance optimisation skills. Familiarity with REST APIs and JSON. Ideal 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 ❯

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 ❯