101 to 125 of 277 Performance Optimisation Jobs in the UK

Full Stack Engineer

Hiring Organisation
Affinity Labs
Location
City of London, London, United Kingdom
Contribute meaningfully to product and architecture discussions; be heard in debate and align to unified decisions. Own operability: CI/CD, monitoring/alerting, performance optimisation, safe rollbacks. Build and integrate AI features (LLM/agent workflows, RAG/vector DB integration, eval hooks, cost/safety guardrails ...

UI Engineer

Hiring Organisation
mthree
Location
City of London, London, United Kingdom
Experience building large-scale, enterprise-grade applications. Knowledge of state management frameworks (Redux, Context API, etc.). Understanding of UI/UX principles and performance optimization. Familiarity with testing frameworks and CI/CD pipelines. Excellent problem-solving and collaboration skills. Nice to have: Financial services or trading systems ...

Power Platform Developer

Hiring Organisation
Hays Technology
Location
Walsall, Staffordshire, United Kingdom
Employment Type
Permanent
Salary
GBP 50,000 - 60,000 Annual
services. Create and manage custom connectors for integrating external APIs and services. Translate business requirements into functional and technical specifications. Conduct testing, troubleshooting, and performance optimization of applications. Provide technical support, documentation, and training to end-users. Stay updated with the latest features and best practices within the Power ...

Senior Golang Engineer

Hiring Organisation
PCR Digital
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £650/day Inside IR35
years of relevant industry experience Significant experience with Golang and Git/GitHub SCM Strong experience with coding techniques and standard methodologies for security, performance optimization, and ease-of-use Experience in utilisation and deployment of cloud technologies in AWS or GCP , experience in container technologies such as Docker … through analytics dashboards Passion for high-quality code, tests, CI/CD, documentation, and production services Track record of driving improvements in code quality, performance , etc. Experience leveraging ORMs to interact with databases efficiently Familiarity with Python, Java, Swift, C, C++ and/or Objective-C ; and JavaScript ...

Web Designer / Developer (WordPress & UX/UI)

Hiring Organisation
Reed
Location
Billingham, Cleveland, England, United Kingdom
Employment Type
Full-Time
Salary
£30,000 - £38,000 per annum, Inc benefits
multiple digital touchpoints and collaborating closely with designers, developers, and senior stakeholders. The Role You will play a key role in the design, build, optimisation, and ongoing improvement of several high-profile digital platforms serving both B2B and B2C audiences. Working within the Marketing function and alongside in-house … company-wide Design System Collaborate closely with in-house developers on integrations and internal tools Ensure best practice across SEO, accessibility (WCAG), performance, and site structure Test websites across browsers and devices and resolve usability or UI issues Analyse performance and user behaviour to support continuous improvement Confidently ...

SAS Data Engineer

Hiring Organisation
Deerfoot Recruitment Solutions
Location
Telford, Shropshire, West Midlands, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£70,000
Engineers to join a growing data team. This is a key role within a large-scale data portfolio, supporting critical programmes focused on revenue optimisation, fraud detection, data management and analytics. The successful candidate will play a hands-on role in designing, building and supporting robust SAS-based data … solutions, working closely with product owners, architects, engineers and senior client stakeholders. Key responsibilities include: Designing and delivering secure, high-performance SAS solutions for data integration and analytics Building and enhancing data pipelines covering ingestion, transformation, reporting and fraud detection Supporting live services, incident resolution and continuous improvement Collaborating ...

Customer Success Manager

Hiring Organisation
adWMG
Location
London Area, United Kingdom
adWMG’s technology and services to meet their goals. Responsibilities include on-boarding new supply & demand partnerships, analysing data, inventory quality management, performance optimisation, managing and growing existing partnerships, addressing customer needs, identifying upselling/cross-selling opportunities, and building and maintaining strong customer focussed relationships. The role … partner stakeholders, offering insights, resolving issues, and identifying upselling and cross-selling opportunities Work closely with internal product and technical teams to enhance performance and maximize yield Track and analyze performance metrics and KPIs to inform optimization efforts and long-term growth strategies Represent the company at global ...

Power BI Developer

Hiring Organisation
Tenth Revolution Group
Location
Stafford, Staffordshire, England, United Kingdom
Employment Type
Full-Time
Salary
£35,000 - £45,000 per annum
Power BI Developer Up to £45,000 I am seeking an Power BI Developer to support the development, optimisation and governance of modern data and analytics solutions within a growing UK analytics consultancy. Sitting within an expanding analytics practice, this role is central to delivering trusted, scalable and high … Power BI semantic models Develop high-quality Power BI reports and dashboards, including advanced DAX measures and calculations Apply best practices across data modelling, performance optimisation and governance Support analytics users and troubleshoot issues across deployed insight products Contribute to ongoing improvements in analytics standards, processes and methodologies ...

Senior Software Engineer

Hiring Organisation
Understanding Recruitment
Location
United Kingdom
Have you built low-latency, high-performance systems and want to work at the cutting edge of crypto trading infrastructure? Senior Software Engineer (C++) – Crypto Trading 💸💹 Salary: up to £185k + bonus + RSUs Location: Fully Remote We are delighted to be continuing our partnership with a globally established … mission to accelerate global crypto adoption, and are looking for experienced C++ Engineers to help build one of the most scalable, secure, and high-performance trading platforms in the market. You’ll join a globally distributed Trading Technology team, working on critical backend services including matching engines, market data ...

Senior Software Engineer

Hiring Organisation
Understanding Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£165,000 - £185,000 per annum
Have you built low-latency, high-performance systems and want to work at the cutting edge of crypto trading infrastructure? Senior Software Engineer (C++) - Crypto Trading Salary: up to £185k + bonus + RSUs Location: Fully Remote We are delighted to be continuing our partnership with a globally established … mission to accelerate global crypto adoption, and are looking for experienced C++ Engineers to help build one of the most scalable, secure, and high-performance trading platforms in the market. You'll join a globally distributed Trading Technology team, working on critical backend services including matching engines, market data ...

Software Developer Apprentice

Hiring Organisation
QA
Location
Countess Wear, Devon, UK
Employment Type
Full-time
with installing, configuring, and maintaining WordPress plugins Support troubleshooting and debugging website issues Test websites across different browsers and devices Help optimise websites for performance, accessibility, and user experience Work collaboratively with designers, developers, and content teams Follow coding standards, documentation practices, and version control processes During the apprenticeship … development (HTML, CSS, responsive design) Backend development fundamentals using PHP WordPress theme and plugin development Version control using Git Software testing and debugging Website performance optimisation Secure development practices Agile development methodologies Documentation and technical communication Successful apprentices will demonstrate: Enthusiasm for learning new technologies Strong problem-solving ...

Software Developer Apprentice

Hiring Organisation
QA
Location
Team Valley Trading Estate, Gateshead, Tyne and Wear, England, United Kingdom
Employment Type
Full-Time
Salary
£20,000 per annum
with installing, configuring, and maintaining WordPress plugins Support troubleshooting and debugging website issues Test websites across different browsers and devices Help optimise websites for performance, accessibility, and user experience Work collaboratively with designers, developers, and content teams Follow coding standards, documentation practices, and version control processes During the apprenticeship … development (HTML, CSS, responsive design) Backend development fundamentals using PHP WordPress theme and plugin development Version control using Git Software testing and debugging Website performance optimisation Secure development practices Agile development methodologies Documentation and technical communication Successful apprentices will demonstrate: Enthusiasm for learning new technologies Strong problem-solving ...

Full Stack Web Developer (Next.js & TypeScript)

Hiring Organisation
Neptune Digital
Location
United Kingdom
someone who can build scalable, performant systems and beautiful, intuitive interfaces. About the Role You’ll be responsible for designing, building, and maintaining high-performance web applications and PWAs for Neptune’s clients. You’ll work closely with our design, strategy, and infrastructure teams to turn complex business processes … digital experiences. We’re looking for someone who can contribute across the full stack - from database schema design and API architecture to front-end performance and user experience. Your Tech Stack You’ll work primarily with: Vercel – for hosting and deployment Next.js – as the core web framework TypeScript ...

KPI Developer

Hiring Organisation
Technical Staffing Resources Limited
Location
Leatherhead, Surrey, South East, United Kingdom
Employment Type
Contract
current service to new service. This went live October 2025 and there is now a multi-organisational Programme underway of hypercare, stabilisation and optimisation of platforms and services. Led by the senior team that mobilised the platform, KBR have in place a multi-disciplinary technology team deployed to deliver … Devops Agile Environment with differing skill levels. Experience of Implementing advanced DW techniques, including but not limited to SCD, index strategies, Dimensional Modelling, Performance Optimisation Able to communicate a technical solution to a wide audience of technical and non-technical colleagues and clients. Qualifications/Certifications Requirements Educational ...

Full Stack Developer

Hiring Organisation
Erin Associates
Location
Blackburn, Lancashire, North West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£45,000
/CD workflows Collaborating with product, leadership and marketing teams Mentoring junior developers and providing code reviews Overseeing integrations with APIs and driving performance optimisation The following skills and experience are required: Strong full stack web development experience Strong experience with JavaScript, TypeScript and modern frameworks (React) Experience ...

Full Stack Developer

Hiring Organisation
Erin Associates
Location
Aberdeenshire, Scotland, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£45,000
/CD workflows Collaborating with product, leadership and marketing teams Mentoring junior developers and providing code reviews Overseeing integrations with APIs and driving performance optimisation The following skills and experience are required: Strong full stack web development experience Strong experience with JavaScript, TypeScript and modern frameworks (React) Experience ...

Front-End Developer

Hiring Organisation
Erin Associates
Location
Blackburn, Lancashire, North West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£45,000
modern React and TypeScript Collaborating with product, leadership and marketing teams Mentoring junior developers and providing code reviews Overseeing integrations with APIs and driving performance optimisation The following skills and experience are required: Strong front-end web development experience Strong experience with React Experience providing scalable front ...

Software Engineer

Hiring Organisation
Technify Talent Limited
Location
Middleton, Lancashire, United Kingdom
Employment Type
Permanent
Salary
£45000 - £50000/annum
technologies, computer vision, sensor integration, and intelligent automation Build robust, reliable, and high-performing software for real-world applications Participate in troubleshooting, debugging, and performance optimisation activities Contribute ideas for improving products, processes, and development approaches Support the delivery of software across desktop, embedded, or edge-based environments ...

SAP FIORI And BTP Developer/Engineer - Sweden Based

Hiring Organisation
Square One Resources
Location
Sverige, United Kingdom
Employment Type
Contract
Contract Rate
£625 - £700/day
Finance & Controlling) EWM (Extended Warehouse Management) TMS (Transportation Management) Nice to have: Architecture design experience across enterprise SAP landscapes Strong focus on: Security Performance optimisation System integration Extensibility strategies Exposure to applied AI solutions within SAP environments If you are interested in this opportunity, please apply now with ...

Head of IT Development

Hiring Organisation
Mirai Talent
Location
Manchester Area, United Kingdom
PostgreSQL and database-driven systems Manage hosting environments, servers, DNS, domains and deployments Get involved in CI/CD workflows, testing, QA and performance optimisation Scope, plan and price technical work Drive better processes, workflows and development standards Build internal tools, dashboards and automation Play a key role ...

Senior Full Stack Engineer

Hiring Organisation
RSMB
Location
Central London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£85,000
Senior Full Stack Engineer role: This role sits within the Development team in the Technology department and is critical to delivering scalable, high-performance, data-driven products. You will work across the full stack, contributing to backend services, APIs, and frontend applications, while collaborating closely with data science, product … focused mindset. Key responsibilities as our Senior Full Stack Engineer will include: Full Stack Development & System Design Designing and building scalable, maintainable, and high-performance applications across backend and frontend layers. Developing backend services using Python and SQL, with integration into Azure-based infrastructure and Snowflake data platforms. Building ...

Senior Full Stack Engineer

Hiring Organisation
RSMB
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£85,000 per annum
Senior Full Stack Engineer role: This role sits within the Development team in the Technology department and is critical to delivering scalable, high-performance, data-driven products. You will work across the full stack, contributing to backend services, APIs, and frontend applications, while collaborating closely with data science, product … focused mindset. Key responsibilities as our Senior Full Stack Engineer will include: Full Stack Development & System Design Designing and building scalable, maintainable, and high-performance applications across backend and frontend layers. Developing backend services using Python and SQL, with integration into Azure-based infrastructure and Snowflake data platforms. Building ...

Security Engineer (Splunk)

Hiring Organisation
Searchability NS&D
Location
Watford, England, United Kingdom
fund Structured professional development and training opportunities THE MANAGING SECURITY ENGINEER ROLE As a Managing Security Engineer, you will lead the design, deployment and optimisation of large-scale security monitoring platforms. You will work closely with cross functional engineering and security teams to ensure the right controls, tooling … processes are in place to protect critical systems and data. You will take ownership of detection engineering, SIEM platform performance and the full lifecycle of security detection content, ensuring security monitoring remains effective, scalable and reliable. Key responsibilities include: Acting SME on Splunk Enterprise Security platforms Designing and maintaining ...

API Developer - Golang/Python

Hiring Organisation
Talent Smart Limited
Location
Sheffield, Yorkshire, United Kingdom
Employment Type
Contract
Contract Rate
GBP 500 - 575 Daily
impact within a major financial organisation, this could be a strong fit. Role Overview You'll be responsible for designing, building, and integrating high-performance APIs, with a strong focus on Golang (preferred) or Python . You'll also collaborate with Front End teams, contributing to web-facing components … seamless integration across internal and external systems Collaborate with cross-functional teams including Front End developers Contribute to architecture decisions and best practices Support performance optimisation and scalability initiatives Required Skills & Experience Strong experience with Golang (preferred) or Python Proven track record in API development (design, build, integration ...

Senior Backend Engineer

Hiring Organisation
Cavendish Professionals
Location
London Area, United Kingdom
Scale and evolve backend infrastructure Design and build performant APIs and services Develop infrastructure to support advanced technologies (including AI/ML) Optimise database performance and queries Improve system reliability through monitoring and alerting Collaborate with cross-functional teams to support ongoing product development Requirements Experience working in product … code (e.g. AWS, Terraform) Solid knowledge of relational databases (e.g. PostgreSQL) Experience with serverless architectures (e.g. AWS Lambda) Understanding of security best practices and performance optimisation About You You enjoy building and solving complex problems Comfortable working in a fast-paced, evolving environment Interested in startup or high ...