726 to 750 of 1,228 Senior Developer Jobs in the UK

Mid-Level Frontend React Developer - AI Technology Salary: £50,000-80,000 Location: 2 days a week in London Mid React Developer - would you like the opportunity to work for a game-changing AI company based in London? This is an exciting opportunity for a Mid-level React Developer to join an organisation creating significant value for … their customers. As a Mid-level React Developer, you will work alongside and be guided by their lead Frontend Engineer, working on enhancing and optimising their analytics platform. You will get the chance to work on creating exciting and user-friendly web apps. Requirements: At least 3+ years of experience building scalable and reliable Frontends in an agile manner. … High proficiency with JavaScript, React/Redux. Experince with Python and Node.js are beneficial. If you're a Mid-level React Developer who has a keen interest in working for an AI start-up in London, please apply. More ❯

We're looking for a Senior React Developer to build a new Weather App module and support product innovation through POCs. Outside IR35. Work with modern tech, shape architecture, and deliver high-impact customer features. Key skills required for this role Advanced React.js Development - Sitecore - API Integration - CI/CD & Automation - Agile Delivery & Stakeholder Communication Important Advanced React.js … Development - Sitecore - API Integration Senior React & Sitecore Developer What is the project about? We're embarking on an exciting digital transformation initiative focused on enhancing the customer experience through the development of a brand-new Weather App module. This module will deliver real-time, destination-specific weather insights to holidaymakers, while also supporting rapid experimentation and validation of … new product ideas through proof-of-concepts (POCs). What will I be doing? As a Senior React Developer, you'll play a pivotal role in the end-to-end delivery of this greenfield app. You'll: Lead the selection and implementation of a modern React-based technology stack. Be familiar with or experienced in Sitecore Headless/ More ❯

Senior AI Software Developers required for worldwide AI projects and locations Are you ready to shape the future of AI and Machine Learning web applications as a Senior AI Software Developer ? The WOW Adventure Ltd is on the lookout for visionary Senior AI Engineers to join our global team in the UK, USA, Canada, Australia, Italy … Norway, Finland, New Zealand, South Africa, India, Bangladesh, and Kenya. Key Responsibilities as Senior AI Software Developer: Lead and manage AI and Machine Learning projects at a senior project management level. Develop cutting-edge web applications using Python, JavaScript, and AI technologies. Drive innovation and collaborate with cross-functional teams to deliver exceptional results. Utilise your expertise … to transform complex requirements into scalable solutions. Qualifications: Proven senior-level experience in AI and Machine Learning project management. Proficiency in Python, JavaScript, and the latest AI technologies. Strong problem-solving skills and a passion for innovation. Excellent communication and collaboration abilities. Why Join The WOW Adventure? Global Impact: Contribute to projects that span across diverse regions. Cutting-Edge More ❯

Senior .NET Developer Location: Central London, hybrid working, 1 day a week onsite. Day rates: £550-£650 (Outside IR35) Duration: 6 months initially with likely extensions Our client are on an exciting greenfield journey to build a brand-new, cloud-native platform. You will work closely with product owners, analysts, and other engineers to shape and build a … contribute to the full software lifecycle, from design and development to deployment and operation in production. They're building this platform in modern .NET and Azure PaaS. Must-haves: Senior-level experience developing in C#, .NET Core Strong understanding of APIs using ASP.NET, MVC, Web API, etc. Experience working on Event Driven Architectures and Event Sourced Architectures Solid understanding More ❯

Senior .NET Developer Location: Central London, hybrid working, 1 day a week onsite. Day rates: £550-£650 (Outside IR35) Duration: 6 months initially with likely extensions Our client are on an exciting greenfield journey to build a brand-new, cloud-native platform. You will work closely with product owners, analysts, and other engineers to shape and build a … contribute to the full software lifecycle, from design and development to deployment and operation in production. They're building this platform in modern .NET and Azure PaaS. Must-haves: Senior-level experience developing in C#, .NET Core Strong understanding of APIs using ASP.NET, MVC, Web API, etc. Experience working on Event Driven Architectures and Event Sourced Architectures Solid understanding More ❯

Senior Software Developer (Symfony) 100% Remote (Bath) £60,000 - £70,000 + Fully Remote + Training + Company Benefits Are you a Senior Software Developer with experience in Symfony looking for a remote role and to play a crucial role in the continued success of a fast-growing e-commerce pharmaceutical company? Do you want the … support and new development. The support will be maintenance on html, CSS, JavaScript/jQuery and new development will focus on symfony and Vue.Js This role would suit a Developer experienced in Symfony looking to join a growing, leading Medical e-commerce platform in a fully remote role. The Role: Website Support Identify and update functionality or fix bugs More ❯

Senior Software Developer (Symfony) Bath - Hybrid/Remote £50,000 - £70,000 + Fully Remote + Training + Company Benefits Are you a Senior Software Developer with experience in Symfony looking for a remote role and to play a crucial role in the continued success of a fast-growing e-commerce pharmaceutical company? Do you want … support and new development. The support will be maintenance on html, CSS, JavaScript/jQuery and new development will focus on symfony and Vue.Js This role would suit a Developer experienced in Symfony looking to join a growing, leading Medical e-commerce platform in a fully remote role. The Role: Website Support Identify and update functionality or fix bugs More ❯

Senior Full-Stack Developer (Remote UK, £60–80k) Help disrupt the live music industry with AI We’re working with a mission-driven company using AI to transform live music. They’re hiring a Senior Full-Stack Developer to join their remote team. They are specifically looking for someone with prior/current experience working at More ❯

We are seeking a highly skilled Senior Python Developer to join a dynamic team at a leading medical device company in the UK. This role will play a key part in developing innovative software solutions that support life-changing medical technologies. Key Responsibilities: Design, develop, and maintain robust Python applications for medical device software Collaborate with cross-functional More ❯

client is a market-leading startup . They are the only company currently able to provide a full AI-driven solution to their market. They are looking for a Senior/Lead Front End Developer to join their UK remote team. Here are the requirements for a Senior/Lead Front End Developer. Key Responsibilities: Develop, test … Troubleshoot, debug, and optimise applications to ensure performance and reliability. Write clean, scalable, and efficient code following industry best practices. Build responsive and performant web applications. Manage and direct Senior Developers Core Technical Skills Required: Strong experience with React and React Native (including hooks like useEffect, useState) Familiarity with TypeScript and strict typing for maintainable code Comfortable working with More ❯

Working alongside a well established company, we are looking for a Senior Software Developer to start as soon as possible. The Role We are seeking senior developers to play a key role in every phase of the product development cycle. In this role, you will: Collaborate in teams to define, design, and develop software for new products More ❯

The Role As the Senior Manager, Developer Experience at NewStore, you will play a pivotal role in driving the growth of our industry-leading, Omni-Channel Point of Sale platform. You'll lead a multi-skilled team in crafting a world-class developer platform that shortens time to value for our XP teams as we deliver exceptional … shopping experiences. If you thrive on overcoming challenges, fostering collaboration, and value innovative engineering over toil, this role is for you. What You'll Do Lead the developer experience team in delivering a cutting-edge internal developer platform Create and maintain a strong control environment, then go the extra distance to ensure that the developer experience remains … efforts to attract and identify top talent and build high-performing, multi-skilled teams Seek input and collaborate closely with internal engineering teams to ensure platform enhancements equate to developer experience enhancements Your Story You are one of a rare breed who combine agile product development skills with cloud engineering and service management experience, enabling you to build strong More ❯

Your new company Working for a globally renowned bank. Your new role You will be working as a Senior Bi Developer/Engineer in a newly formed data product team. In this role you will be supporting Front Office operations possessing strong expertise in Power Bi and Data Engineering, with good stakeholder management experience. You will be: Designing More ❯

Senior Python Software Engineer – London *Please note this role cannot sponsor. Please do not apply if you are seeking sponsorship* A Senior Python Engineer is required for an exciting and innovative Software sports betting company based in London. The successful candidate will be working closely with the quantitative researchers and alongside other extremely talented and driven engineers to … You will be joining a tight-knit team of research mathematicians, computer scientists and trading analysts at the top of their chosen fields. The current team consists of one developer with 10+ years of experience, specializing in Python backend development. The team will grow in 2025. Essential Skills 5+ years’ experience in a Software Development role, with some Python More ❯

Senior Python Software Engineer – London *Please note this role cannot sponsor. Please do not apply if you are seeking sponsorship* A Senior Python Engineer is required for an exciting and innovative Software sports betting company based in London. The successful candidate will be working closely with the quantitative researchers and alongside other extremely talented and driven engineers to … You will be joining a tight-knit team of research mathematicians, computer scientists and trading analysts at the top of their chosen fields. The current team consists of one developer with 10+ years of experience, specializing in Python backend development. The team will grow in 2025. Essential Skills 5+ years’ experience in a Software Development role, with some Python More ❯

will be part of a vibrant, fast-moving environment where the customer truly comes first, and innovation is at the core of everything. Our client is looking for a Senior Developer that will help support them to build and release engaging, innovative applications to market quickly. Key Responsibilities: Implement technical solutions that are resilient, scalable and manageable Coach More ❯

will be part of a vibrant, fast-moving environment where the customer truly comes first, and innovation is at the core of everything. Our client is looking for a Senior Developer that will help support them to build and release engaging, innovative applications to market quickly. Key Responsibilities: Implement technical solutions that are resilient, scalable and manageable Coach More ❯

private wealth managers report, communicate, and exchange data with their clients. Ready to advance your career and join an industry leader with a constant mission to innovate? Role Info: Senior Microsoft SQL Developer 100% UK Remote Up to £70,000 Plus Incredible Benefits Package including Life Assurance, Private Health Cover, Pension Scheme, and More Values: Innovative, Flexible, Responsive … carefully managed by our own Infrastructure Engineers and our hosting partners. We run a network of SQL Servers, ensuring high availability and performance for our data-driven solutions. The Senior Microsoft SQL Developer role: We are seeking an experienced Senior Microsoft SQL Developer to work closely alongside our Chief Data Architect (ex Microsoft) and Head of More ❯

will be part of a vibrant, fast-moving environment where the customer truly comes first, and innovation is at the core of everything. Our client is looking for a Senior Developer that will help support them to build and release engaging, innovative applications to market quickly. Key Responsibilities: Implement technical solutions that are resilient, scalable and manageable Coach More ❯

carers deliver better care and for the home care companies to improve their operations and their regulatory compliance. The Role We are seeking a highly skilled and motivated Senior Mobile Developer to join our talented engineering team. This is a pivotal role that will act as a bridge between our dedicated Android and iOS developers, driving the future … will also lead a strategic initiative to leverage Kotlin Multiplatform (KMP) to abstract and share backend functionality across both platforms. This is an exciting opportunity for a forward-thinking developer to make a significant impact on a product that genuinely helps people every day. Responsibilities Feature Development: Design, develop, and implement new features for the CareLineLive Carer Companion App … latest trends and technologies in mobile development and advocate for their adoption where they can bring value to the team and the product. About you Proven experience as a Senior Mobile Developer with a strong portfolio of shipped applications on both Android and iOS. Expertise in Kotlin and a solid understanding of Swift . Demonstrable experience with or More ❯

carers deliver better care and for the home care companies to improve their operations and their regulatory compliance. The Role We are seeking a highly skilled and motivated Senior Mobile Developer to join our talented engineering team. This is a pivotal role that will act as a bridge between our dedicated Android and iOS developers, driving the future … will also lead a strategic initiative to leverage Kotlin Multiplatform (KMP) to abstract and share backend functionality across both platforms. This is an exciting opportunity for a forward-thinking developer to make a significant impact on a product that genuinely helps people every day. Responsibilities Feature Development: Design, develop, and implement new features for the CareLineLive Carer Companion App … latest trends and technologies in mobile development and advocate for their adoption where they can bring value to the team and the product. About you Proven experience as a Senior Mobile Developer with a strong portfolio of shipped applications on both Android and iOS. Expertise in Kotlin and a solid understanding of Swift . Demonstrable experience with or More ❯

per day | Central London (3 days per week) | Inside IR35 Senior ETRM Developer – Endur (JVS/OpenComponents) You'll be joining one of the most technically forward-thinking ETRM teams in the industry – driving design and delivery of a highly integrated Endur platform across front-to-back energy trading functions. What’s key here: You must have strong More ❯

per day | Central London (3 days per week) | Inside IR35 Senior ETRM Developer – Endur (JVS/OpenComponents) You'll be joining one of the most technically forward-thinking ETRM teams in the industry – driving design and delivery of a highly integrated Endur platform across front-to-back energy trading functions. What’s key here: You must have strong More ❯

Canada to deliver meaningful business growth for our clients. In the Development team, we craft tailored digital experiences that reflect our clients' brand identities and business goals. As a Senior Web Developer, you'll play a key role in delivering secure, high-performing, and user-focused websites that drive engagement and deliver measurable value. Your Role As our … Senior Web Developer, you'll lead the way in delivering top-notch websites for our life sciences clients. Working closely with our Head of Design and Delivery, you'll help shape project direction and keep things running smoothly from start to finish. You'll be hands-on with the code-building custom WordPress sites (including multisite setups) that … help improve how we do things-sharing knowledge, refining our workflows, and making sure we're always building with performance, security, and user experience in mind. What does a Senior Developer do? Technical Delivery Plan and build custom WordPress websites, including multisite setups and Gutenberg editing experiences. Write clean, scalable code that follows best practices and ensures strong More ❯

We're looking for a senior frontend engineer to help us build our SaaS and on-premise helpdesk product. If you love working on products used by thousands of people and want to work in a small but quickly growing company, then read on! At Deskpro, we make helpdesk software and we have customers of all shapes and sizes … We have a Wimbledon office but remote opportunities are available for UK-based candidates who can't commute in. View our careers page What you will do as a senior frontend developer As a senior frontend developer, you will help build new features and modules, you'll be involved in shaping our underlying product frameworks and More ❯