5,602 Senior Web Developers jobs in the United Kingdom

Full Stack Software Engineer (Java/AWS focus) Location: Cheltenham (Remote/Flexible) Salary: Up to £70,000 depending on experience Eligibility: Must be eligible for UK Security Clearance (SC) We’re looking for a Full Stack Software Engineer to join a dynamic, agile environment delivering complex and high-impact software solutions. You’ll help design and build bespoke systems that provide cutting-edge capability to our customers, using modern technologies and engineering best practices. What You’ll Do Design, develop, and test high-quality software solutions Work with a wide range of technologies, particularly open-source tools and frameworks Build and maintain CI/CD pipelines using GitLab to ensure software quality and security Deploy solutions to public and private cloud environments ( AWS , Azure ) Collaborate with cross-functional teams in an Agile environment (Depending on experience) Lead technical teams and engage directly with clients About You Essential: Commercial experience with Java and AWS Frontend: Experience with JavaScript , TypeScript , or React (at least one required) Familiarity with DevOps practices and CI/CD tools (GitLab preferred) Experience working in Agile teams Consultancy or client-facing experience is advantageous If you’re a Full Stack Engineer who thrives on solving complex problems and delivering quality software , apply today.

Hi , Greetings from Ampstek We do have opening for our client, Role : Senior UI Developer (React & Angular) Location : Belfast, NI Duration : Permanent Job Description: Total IT Experience: 7 to 12 years Angular / React UI developers with proficiency in Design Systems. Eg: Material UI Experience in using the Design system Strong experience with React 18, TypeScript, and ES6. Expertise in performance fine-tuning and optimization of front-end applications Hands-on experience with React Hooks such as useState, useEffect, useMemo, useCallback, and custom hooks. Strong understanding of responsive design principles, patterns, and libraries such as Bootstrap. Solid knowledge and hands-on experience in backend API integration, exception handling, and managing synchronous/asynchronous requests Proficient in HTML5, CSS3, and modern CSS frameworks like Tailwind CSS or Styled Components. Strong experience with Application Security concepts such as Authentication, Authorization, and Data Security. Experience in designing applications for multiple browsers and multiple resolutions, including mobile devices. Strong experience in responsive design principles and patterns and libraries such as bootstrap. Hands-on experience with code release processes, bundling, and packaging applications for production environments. Strong skills in troubleshooting front-end issues and adhering to best practices. Proven ability to develop reusable components/widgets and implement component-driven architecture and design principles. Exposure to unit testing or testing automation frameworks for front-end validation. Advanced experience with testing frameworks such as Jest, React Testing Library, Cypress, or Enzyme for unit, integration, and end-to-end testing. Strong understanding of web accessibility standards (WCAG) and experience in building inclusive and accessible applications. Experience in accessibility testing TFS (Team Foundation Server) familiarity will be an added advantage Working knowledge of Webpack, Vite, Create React App (CRA), and Agile Scrum Framework for efficient development, build optimization, and project management. Familiarity with NGRX or RXJS frameworks, as well as Saga/Thunk patterns for state management and data transfer. Exposure to micro-frontends architecture for modular UI development is an added advantage. Good to have: Experience in Node.js backend development. Familiarity with Continuous Integration methodologies and tools like Jenkins. Good to have exposure to cloud CDN and static website hosting in AWS or Azure. Excellent communication and presentation skills.

Full Stack Software Engineer (Java/AWS focus) Location: Plymouth (Remote/Flexible) Salary: Up to £70,000 depending on experience Eligibility: Must be eligible for UK Security Clearance (SC) We’re looking for a Full Stack Software Engineer to join a dynamic, agile environment delivering complex and high-impact software solutions. You’ll help design and build bespoke systems that provide cutting-edge capability to our customers, using modern technologies and engineering best practices. What You’ll Do Design, develop, and test high-quality software solutions Work with a wide range of technologies, particularly open-source tools and frameworks Build and maintain CI/CD pipelines using GitLab to ensure software quality and security Deploy solutions to public and private cloud environments ( AWS , Azure ) Collaborate with cross-functional teams in an Agile environment (Depending on experience) Lead technical teams and engage directly with clients About You Essential: Commercial experience with Java and AWS Frontend: Experience with JavaScript , TypeScript , or React (at least one required) Familiarity with DevOps practices and CI/CD tools (GitLab preferred) Experience working in Agile teams Consultancy or client-facing experience is advantageous If you’re a Full Stack Engineer who thrives on solving complex problems and delivering quality software , apply today.

Software Engineer Salary: Competitive, negotiable based on experience, plus benefits including a 7% pension contribution, 25 days holiday, and life insurance Location: Portsmouth, hybrid working Sirius Digital is a trusted provider of expertise in Software Engineering, Data Science, and AI, supporting clients in the defence, nuclear, space, and energy sectors. We specialise in software modelling and simulation, robotics and autonomous systems, as well as data science and engineering, delivering technical consultancy and innovative solutions. We are seeking a Software Engineer who combines strong technical skills with problem-solving ability and effective communication. You will work independently or as part of small teams, helping Sirius Digital grow while advancing your own expertise. We offer a competitive benefits package and clear opportunities for rapid career progression. Key Responsibilities: Deliver technical consultancy projects to a high standard Develop and implement software solutions across areas such as wargaming, simulation, autonomous systems, digital twins, and synthetic environments Build and sustain strong client relationships Apply mathematical and computational techniques to solve real-world problems, developing innovative approaches as needed What We’re Looking For: Experience designing and delivering performant software applications, ideally within a technical consultancy environment Knowledge of software modelling and simulation techniques Ability to analyse requirements and define technical specifications Experience in one or more of the following: videogame engine technology (e.g., Unreal Engine, Godot), entity or event-based simulation, robotics, and autonomous systems Proficiency in C/C++, familiarity with Python, C#, Zig. Willingness to learn new technologies and programming languages Ability to apply mathematical or statistical methods to scientific or applied challenges Confidence working with large codebases and understanding hardware/performance constraints Strong interpersonal skills for client and stakeholder engagement Experience preparing technical reports and presenting to customers Willingness to travel within the UK and work on client sites as required Desirable: Background working with Defence Digital, DE&S, Dstl, Frontline Commands, or the UK Defence industry Degree in a STEM or computing discipline, or equivalent experience Proficiency with MS Office (Excel, PowerPoint, Word) What We Offer: Mentoring, internal and external training, and access to sector specialists and online learning Comprehensive benefits including a 7% pension contribution, private healthcare, life assurance, additional holiday purchase options, and an electric vehicle scheme Other Requirements : • Candidates must have an existing right to live and work in the UK. • Candidates will need to undergo an internal BPSS check prior to gaining site access. • Candidates will also need to either be willing and eligible or to undergo a Security Clearance check (SC level) or hold a current SC clearance upon starting their employment with the company. To gain SC clearance you will normally need at least 5 years’ UK residency.

Please Note: Any offer of employment is subject to satisfactory SC security clearance which requires 5 years continuous UK address history, typically including no periods of 30 consecutive days or more spent outside of the UK. Note: The above information relates to a specific client requirement Accenture is a leading global professional services company, providing a broad range of services in strategy and consulting, interactive, technology and operations, with digital capabilities across all of these services. With our thought leadership and culture of innovation, we apply industry expertise, diverse skill sets and next-generation technology to each business challenge. We believe in inclusion and diversity and supporting the whole person. Our core values comprise of Stewardship, Best People, Client Value Creation, One Global Network, Respect for the Individual and Integrity. Year after year, Accenture is recognized worldwide not just for business performance but for inclusion and diversity too. “Across the globe, one thing is universally true of the people of Accenture: We care deeply about what we do and the impact we have with our clients and with the communities in which we work and live. It is personal to all of us.” – Julie Sweet, Accenture CEO As a team: Accenture Software & Platform Engineering is powered by a community of 1,000 experts and provides end-to-end product engineering solutions which deliver tangible value, fast. We bring together an obsession for technical excellence with agility and scale, to help clients move from project to product at speed. We partner with clients across all sectors—from fast-growing scale-ups to national and global blue-chip companies, as well as public sector organizations. Our teams regularly develop products that reach and impact millions of users. As a member of our Software & Platform Engineering team, you will: Develop traditional and serverless applications and services in an agile and collaborative environment using source control that integrate with data storage services / message buses and other architectural elements Deploy these applications using features such as containers to cloud leveraging CI/CD to support this process backed with good observability when running these in production Ensure quality through the creation of documentation and use of unit / integration / contract testing with a consideration of security / performance requirements We are looking for experience in the following skills: A few years of industry experience in one of following: Java / Typescript / C# / Python / Go. Experience with Cloud Native technologies on AWS. Hands-on experience in scripting languages such as Python, Shell, and other scripting languages to support DevOps and Quality Engineering work. Build automation tools to support CI/CD pipeline. Hands-on experience with GenAI, or evidence of actively pursuing personal GenAI projects outside of work. Strong Accessibility, Security, Performance and Caching coding. Set yourself apart: Experience with building datastore solutions on at least one No-SQL(Elasticsearch). Proven ability to apply analytical and creative thought and translate into technical solutions. Proven ability to debug and resolve complex technical issues. Excellent leadership, communication (written and oral) and interpersonal skills. Experience shaping and delivering small to medium size pieces of work. What is in it for you At Accenture in addition to a competitive basic salary, you will also have an extensive benefits package which includes up to 25 days’ vacation per year, private medical insurance and 3 extra days leave per year for charitable work of your choice! Flexibility and mobility are required to deliver this role as there will be requirements to spend time onsite with our clients and partners to enable delivery of the first-class services we are known for. Equal Employment Opportunity Statement We believe that no one should be discriminated against because of their differences. All employment decisions shall be made without regard to age, race, creed, color, religion, sex, national origin, ancestry, disability status, military veteran status, sexual orientation, gender identity or expression, genetic information, marital status, citizenship status or any other basis as protected by applicable law. Our rich diversity makes us more innovative, more competitive, and more creative, which helps us better serve our clients and our communities.

Role: Full-Stack Developer Salary: £50,000 - £55,000 Location: London - Hybrid (3 days office / 2 days home) Our client is a fast-growing consultancy helping organisations in the legal sector embrace digital transformation. They deliver scalable, secure applications by combining expertise in software development, data, and automation. They are seeking a Full-Stack Developer to join their expanding team. This is a chance to work across the stack, experiment with new technologies, and grow as the company scales. The role will involve: Building, testing, and maintaining full-stack applications Collaborating with stakeholders to gather requirements and shape solutions Developing scalable apps with modern frameworks and low-code platforms Prototyping and experimenting with new technologies Working in agile teams to deliver high-quality software What you'll bring: 2 years' experience in software development Proficiency in Python, JavaScript, or C# Knowledge of relational databases and RESTful APIs Strong problem-solving and communication skills Curiosity and eagerness to learn What's on offer: Hybrid working in central London (Covent Garden/Soho/Southbank) Competitive salary private medical insurance Cycle to Work scheme Modern office with gym, showers, and bike storage A supportive, collaborative environment where everyone makes an impact If you're passionate about building great software and want to be part of a growing consultancy, apply today. Desired Skills and Experience Python, Node, Node.js, JavaScript, Typescript, Flask, Django, C#, React, Next.js, Vue

Role: Software Engineer Type: Permanent Location: Gloucester Clearance: DV Clearance Are you an experienced Software Engineer with exposure to working within defence. Are you keen to work in a role where your work will make a big difference? CND are partnered with a global defence powerhouse to help build their team of Software Engineers to deliver on mission critical goals. The work will span areas like Intelligence and Cyber Security projects, where your input to develop new elements will be valued. You will take on the role of creative and developing cutting edge systems and apps with a close eye on secure coding practices and DevSecOps principles. Key Skills: Proficient in Java or another language such as Python Good knowledge of developing in a Linux environment Working knowledge of Git version control and GitLabs CI/CD pipelines Experience working with Apache NiFi Some exposure to front-end elements like JavaScript, TypeScript or React Some data interrogation with ElasticSearch and Kibana Exposure to working with Atlassian products Looking for a role where you can achieve a good level of flexibility, some very interesting work alongside some of the UK’s brightest minds? Look no further!

BRAND NEW PERMANENT OPPORTUNITY AVAILABLE WITHIN A LEADING COMPANY FOR A SOFTWARE DEVELOPER WITH ENHANCED DV CLEARANCE • Permanent opportunity for a Software Engineer with enhanced DV clearance. • Industry leading company supporting UK national security projects. • Salary up to £75,000 DV bonus • Manchester based in an easily accessible location. • To apply please call or email WHO ARE WE? We are recruiting Software Developers to work with an industry-leading cyber/National Security/defence client with office locations in and around Manchester. The expertise of our engineers drives us forward, and we’re looking for talented individuals eager to learn and grow to join us. Due to the nature of these clients, you must hold Enhanced DV Security Clearance to work on National Security projects. WE NEED THE SOFTWARE DEVELOPER TO HAVE…. • Enhanced DV Security Clearance. • Proficient in at least one of the following Java/ Python/ C++/ C#. • Experience working with cloud technologies (preferably AWS) • Experience with Microservices. TO BE CONSIDERED…. Please either apply by clicking online or emailing me directly to For further information please call me on . I can make myself available outside of normal working hours to suit from 7am until 10pm. If unavailable, please leave a message and either myself or one of my colleagues will respond. By applying for this role, you give express consent for us to process & submit (subject to required skills) your application to our client in conjunction with this vacancy only. Also feel free to connect with me on LinkedIn, just search Laura Jackson. I look forward to hearing from you.

Software Engineer Location: Bishops Stortford Salary: Up to £50k Do you have two years software development experience? Do you have a strong foundation in C# development? Would you enjoy working on projects that involve data integrations, security systems, and enterprise-scale solutions? This role is ideal for someone with around 2 years’ experience, looking to build on their skills with mentoring from senior engineers. The Company Our client is a fast-growing technology business that designs and delivers bespoke software solutions, data integrations, and consultancy services. Since their launch in 2020, they have built a strong reputation for developing custom integrations between third-party systems and access control/security platforms, supporting sectors including higher education, commercial real estate, healthcare, and defence. Now part of a larger international group, they are expanding their UK-based engineering team and looking for a Software Engineer with skills in C# and SQL to join them. You’ll be working closely with senior engineers, gaining hands-on experience, and supporting clients across the UK, Europe, and North America. What you will be doing As C# Software Engineer, you will: Design and develop automated unit, regression, and integration tests Develop and test backend services across both cloud and on-premise deployments Design and implement new features as the product suite evolves Deploy custom solutions remotely to client systems Investigate and resolve software support issues, including customer-facing interaction Write technical documentation and produce supporting materials Contribute to code reviews, improving quality and learning from senior colleagues Collaborate with end users and partners to ensure smooth delivery You will be mentored by experienced engineers and have the chance to work with clients ranging from universities to global Fortune 100 and FTSE 250 companies. What we are looking for We are looking for someone with a solid technical foundation, an eagerness to learn, and strong communication skills. The ideal candidate will have: 2 years’ professional experience in C# development Strong understanding of Computer Science fundamentals (data structures, networking, concurrency) Knowledge of OOP principles Experience working with APIs (building and consuming) Proficiency with Microsoft SQL Server or similar DBMS Basic familiarity with GIT or another source control system Clear and confident written and spoken English for remote collaboration Ability to prioritise, stay organised, and work well under pressure Permission to live and work full-time in the UK (visa sponsorship not available) It’s also a bonus if you have: A degree in a scientific or technical discipline from a leading university Experience in a customer-facing role A proactive and curious mindset, keen to explore new technologies Why apply? This is a fantastic opportunity to progress your Software Development career with a company that will invest in your growth. You will gain exposure to varied projects, work alongside experienced engineers, and develop your skills in a supportive, innovative environment.