1 to 25 of 60 Senior Developer Jobs in Cardiff

Senior .NET Developer Fully Remote (UK based) Paying £75,000 - £80,000 Oliver Bernard are partnered with a Software Development company in the Sustainability sector. They are looking for a Senior Backend Developer with at least 5 years experience writing scalable, performant and maintainable code. The … the UK to be considered. Visa sponsorship is not available for this role. Salary is paying £75k-£80k + benefits. If you are a Senior .NET Developer who is looking for a great work life balance, whilst having lots of ownership and a key say in the direction … of your projects, please apply now for more info! Senior .NET Developer More ❯

Senior Developer (SC Cleared) Location: Remote with occasional travel The Company At Amber Labs, we are a cutting-edge UK and European technology consultancy that prioritises autonomy, experimentation, and rapid learning to deliver exceptional value to our clients. Our company culture is deeply collaborative, ensuring that all colleagues … and accelerate delivery. Our team consists of highly skilled cross-functional consultants, analysts, and support staff. Job Overview We are seeking a highly skilled Senior Developer to join our dynamic team. You will lead the development and enhancement of web applications using HTML, CSS, JavaScript, Node.js, Express.js, and More ❯

Our two key sites are futwiz.com and pikawiz.com, with more being launched shortly. Role Description This is a full-time remote role for a Senior Developer at Wiz Media. The Senior Developer will be responsible for the day-to-day tasks associated with developing, maintaining, and More ❯

Do you have a PhD in Computer Science? FULLY REMOTE Senior Java Developer – Sustainable Energy GreenTech Salary : £100-140k + benefits Location : fully remote from anywhere in the UK I am partnered with a unique energy software platform that is helping consumers transition towards a sustainable future … by producing energy as a services. They are in search of an enthusiastic and knowledgeable Senior Java Developer with a strong comprehension of the Core Java principles alongside a deep understanding in Advanced Computer Science: Algorithms Graph theory Interval graphs Compiler theory You will be a fantastic Senior Java Developer if you have worked with Core Java and have extensive experience with Multithreading, Concurrency and Low Latency, because you will be building your own frameworks and designing new databases from scratch. Your role as a Senior Java Developer will include: - Domain modelling - Requirement engineering More ❯

Senior .Net Developer (Azure) We are seeking a hands-on Senior developer to join a reputable fintech banking as a service organisation. You will be responsible for mentoring and providing continuous improvement. Working alongside peers we are looking for someone who enjoys collaborating with their Team More ❯

Job: Senior PHP Developer Location: UK remote Salary: up to £65K Tech: Symfony, React, MySQL, git, Restful API Are you looking for a remote Senior PHP Developer role? Working with some of the UK’s biggest companies? Then read on... The company: At heart, they’re … long-term project with a leading telecoms supplier. The project has been running for over 8 years already and they’re looking for a Senior PHP Developer to come in and take over the workload. Tech skills you'll need: Symfony (or similar MVC frameworks like Laravel, CodeIgniter More ❯

Senior Clojure Developer – Remote - £100,000 Our mission is to empower organisations by creating intelligent, scalable solutions that enhance employee skills and improve business performance. Our team thrives on pushing boundaries, embracing bold ideas, and driving technical excellence in everything we do. We’re looking for a talented … Senior Clojure Developer to join us and help scale and optimise our cloud-based systems. Key Responsibilities: Design and maintain high-performance back-end systems using Clojure. Architect and deploy applications on AWS (ECS Fargate & CDK). Build and manage containerised applications with Docker. Develop scalable APIs and More ❯

Role: Senior Salesforce Developer Salary: Up to £90,000 (DOE) Location: United Kingdom - Remote TechOhana has collaborated with a boutique Salesforce Partner that is currently expanding it's practice of highly skilled specialists. They are looking for a Senior Salesforce Developer to join the team and … be part of the exciting projects. Your main responsibilities as a Senior Salesforce Developer will be to use your skillset to implement new projects using Apex and LWC. You will also have the opportunity to lead junior developers and offer them mentorship based on your experience in the More ❯

Senior Full Stack Web Developer Location: Central Cardiff Salary: £50-60K plus excellent benefits package Benefits for a Full Stack Web Developer Salary up to £60k Competitive pension scheme Onsite parking Private healthcare Great working environment Additional perks available Main Purpose of the Role As a … Senior Full Stack Web Developer, you will be instrumental in evolving our clients digital platforms. This includes leading end-to-end development projects, mentoring junior developers, and collaborating across departments to deliver robust, scalable web solutions. You will also contribute to strategic growth initiatives by optimising systems and … valued, respected, and empowered. We strongly encourage applications from candidates of all backgrounds and identities. Essential Skills and Experience for a Full Stack Web Developer Extensive full-stack development experience, particularly with Symfony or similar PHP frameworks and Vue.js or comparable JavaScript libraries. Strong command of HTML, SCSS, JavaScript More ❯

Senior Front End Developer- Fully Remote- up to £85k Our client a leading supplier of technology that are used by over 65,000 customers in over 150+ countries are looking to grow their engineering division and add a hands on, Senior/Lead Front End Developer … a global award winning SaaS provider with an ambitious growth plans, with a super collaborative and exciting work culture then please click apply now! Senior Front End Developer- Fully Remote- up to £85k More ❯

We are looking for a Senior Python Developer to join our client on an initial 6 month contract. They have recently developed a new Platform for their industry that has gained interest and investment. The successful candidate will work alongside the Head of Engineering to help build the … new system. The Senior Developer will need to have significant Python experience, specifically API-first development, using FastAPI and experience of refactoring and building complex systems. Their product makes considerable use of LLMs, so experience in this area is needed. You will work within a small team and More ❯

Senior Full Stack Web Developer Location: Central Cardiff Salary: £50-60K plus excellent benefits package Main Purpose of the Role As a Senior Full Stack Web Developer, you will be instrumental in evolving our clients’ digital platforms. This includes leading end-to-end development projects More ❯

Senior Full Stack Web Developer Location: Central Cardiff Salary: £50-60K plus excellent benefits package Main Purpose of the Role As a Senior Full Stack Web Developer, you will be instrumental in evolving our clients’ digital platforms. This includes leading end-to-end development projects More ❯

Requisition Title: Okta/Auth0 Senior developer Duration Contract or Fixed Term Employment Location: Remote(UK) Years of Experience: 10 to 15 Mandatory Skills: Okta, CIAM Description : We are seeking an experienced Okta/Auth0 Architect to lead the migration of legacy Customer Identity and Access Management (CIAM More ❯

Senior Full Stack Developer/Engineer (TypeScript Node React) Remote UK to £80k Are you a technologist who enjoys working with a range of technology and collaborating with clients? You could be joining a successful and growing tech company that produce a range of online games used by … various clients (e.g. eCommerce, sports betting) to help them retain and attract new customers. As a Senior Full Stack Developer you'll take ownership and run small client bespoke projects working across the full tech stack from backend development using TypeScript and Node, through to React on the … a collaborative team. Location/WFH: You can work from home/remotely from anywhere in the UK. About you: You're a software developer/engineer with strong TypeScript and Node skills You have experience of developing transactional games/gambling games/iGaming applications or of working More ❯

Senior Full Stack Web Developer is required by my client who are in growth mode! Main Purpose of the Role As a Senior Full Stack Web Developer, you will be instrumental in evolving our clients' digital platforms. This includes leading end-to-end development projects, mentoring More ❯

Senior Full Stack Web Developer is required by my client who are in growth mode! Main Purpose of the Role As a Senior Full Stack Web Developer, you will be instrumental in evolving our clients' digital platforms. This includes leading end-to-end development projects, mentoring More ❯

Senior Full Stack Drupal Developer with React/Next.js experience. Remote role. Sponsorship is unfortunately not p rovided for this role. Are you a confident Senior Drupal Developer looking for a new opportunity in a GenAI scale-up? A role working on AI driven experiences creating More ❯

My client, a reputable cyber security vendor with a global presence and excellent product recognition, is seeking a Senior Backend PHP Developer to join their team. This is a permanent role and this client is open to a fully remote candidate based in the UK or someone based … in London who is open to hybrid work. Your Responsibilities : As Senior Backend PHP Developer, you will be working closely with the Development Team and Infrastructure Team to work on their tech stack and projects. What you'll be doing: • Design, develop, and maintain scalable, secure, and high … backend development, cloud computing, and DevOps to enhance system design and team capabilities. What You Should Bring? We're looking for a hands-on Senior Backend Developer with DevOps experience, possessing the following: • Proven expertise (5+ years) in backend development with proficiency in PHP and experience in Python More ❯

Do you have 6+ years commercial experience working as a Full Stack Developer using Java and Vue/React/Angular? Are you looking for a new challenge where you can capitalise on your proactiveness, taking initiative and ownership of your work? Senior Full Stack Developer – World … the world in nearly 200 countries. As they continue to grow, both as a business and in reputation, they are looking for a talented Senior Full Stack Developer to join the team and contribute to the greenfield development of various new projects as well as maintaining and improving … current products. As a Senior Full Stack Developer, you must have experience with: Java Spring Vue ideally on the frontend They are open to React or Angular , as long as you are willing to learn and work in Vue SQL Understanding of the whole Software Development Life Cycle More ❯

Senior Full Stack Web Developer Location: Central Cardiff Salary: £50-60K plus excellent benefits package Main Purpose of the Role As a Senior Full Stack Web Developer, you will be instrumental in evolving our clients digital platforms. This includes leading end-to-end development projects More ❯

Senior Software Developer – REMOTE - £100,000 | Full-Time | Competitive Salary + Equity I’m working with a high-growth, product-led business that's building a next-gen platform powered by proprietary AI—and they’re now looking to bring a Senior Software Developer into the More ❯

Role: Senior AWS Fullstack Developer Contract Length: 3 Months (extensions available for up to 12 months) Start Date: June 2025 Operating Hours: 24/7 (on call, on a rota basis) Work Location: Remote – Occasional travel to Manchester, Central London or Croydon IR35 Status: Inside IR35 Industry: Public … Sector Interview Process: One Stage, MS Teams SC Clearance: Must be pre-cleared to SC Level A Senior AWS Fullstack Developer is required by a government end client to develop and maintain existing software through a ticket system for incident, change, problem processes and service requests in accordance More ❯

Senior Full Stack Web Developer Location: Central Cardiff Salary: £50-60K plus excellent benefits package Benefits for a Full Stack Web Developer Salary up to £60k Competitive pension scheme Onsite parking Private healthcare Great working environment Additional perks available Main Purpose of the Role As a … Senior Full Stack Web Developer, you will be instrumental in evolving our clients digital platforms. Th... More ❯

Senior Software Developer required by a successful software company developing web application products for the medical sector. Applicants for this role should be proponents of the functional paradigm. Any knowledge with F#, Haskell or similar functional language would be advantageous for any application - even if this is via … personal projects, It doesn't need to be commercial experience. Core technologies utilised in this team - C#, F#, TypeScript, SQL Server The Senior Software Developer is likely to have a relevant degree in Computer Science or similar subject and 5 years plus experience in commercial software development ideally More ❯