151 to 175 of 1,085 Senior Developer Jobs

Bloomsbury Square, London, United Kingdom Job Summary: We are seeking a Senior MuleSoft Developer to lead API design, development, and integration using the MuleSoft Anypoint Platform. The ideal candidate will be responsible for architecting scalable and high-performance integration solutions, mentoring junior developers, and ensuring best practices across the integration lifecycle. Key Responsibilities: Design, build, and maintain integrations … SaaS platforms Familiarity with OAuth2, JWT, SAML , and other authentication mechanisms Knowledge of CI/CD tools and DevOps practices Strong communication and documentation skills Preferred Qualifications: MuleSoft Certified Developer (Level 1 or 2) Experience with CloudHub , Runtime Fabric , or on-premise deployments Background in Java or other object-oriented programming languages Experience working in Agile/Scrum environments More ❯

Senior Developer (C#/Python) Newport (x4 per month) £46,262 - £59,906 Must be eligible for SC Clearance The Opportunity Yolk Recruitment are excited to be working with an innovation-driven civil service organisation as they journey through an incredible digital transformation whilst prioritising forward thinking and excellent digital practices. Alongside this, they pride themselves on being … part of Britain's leading best-practice employers' forum for sexual orientation and gender identity equality, diversity, and inclusion. We are now looking to help them find a talented Senior Developer to work in a multi-disciplinary agile squad, contributing to the delivery of enterprise-grade solutions using modern technologies and cloud platforms. Key Responsibilities: Design, develop, test … Pension scheme up to 28.9% Discretionary Bonus Arrangements 25 days annual leave Very Flexible Working arrangements Hybrid working options. Think this one's for you If you think this Senior Developer opportunity is for you then please apply online. Yolk Public Sector & Not-for-Profit team works with organisations across the UK to fulfil their recruitment needs and More ❯

As a Senior Fullstack Developer at our innovative healthcare startup, you will play a critical role in enhancing the lives of patients with chronic diseases. We are on a mission to bring the first Hybrid Drug to market: a groundbreaking therapeutic entity that integrates mobile apps with traditional medication. We need your expertise to help us achieve this … with the latest full stack, cloud, and AI advancements. Research and propose innovative solutions to enhance patient engagement and digital health experiences. Qualifications Experience Proven track record as a Senior Full Stack Developer with at least 5 years of hands-on experience. Strong expertise in both frontend and backend development for scalable web applications. Technical Skills Frontend: React More ❯

Senior Software Developer Herndon, VA TS/SCI Polygraph Hybrid (Remote with Occasional On-Site) Immediate Hire Join Synertex and bring your expertise to a mission that matters. We're looking for a Senior Software Developer with a background in full-stack software engineering and distributed systems to support critical defense and intelligence initiatives. If you More ❯

Senior Developer - IT Home based working available £60K plus discretionary bonus We're Looking for a Senior Developer to Lead the Charge! Are you a C# Developer with a passion for building high-performance, scalable, and cutting-edge enterprise and eCommerce systems? Do you thrive in a fast-paced environment where innovation meets execution? If … so, we want YOU to join our dynamic team! As a Senior Developer, you'll be working in a team of skilled analysts, developers, and business experts, crafting the next generation of digital solutions on the Microsoft technology stack. If you're looking for a challenge where your skills are valued, and your expertise will directly shape the More ❯

The Role Senior Developer - IT Home based working available £60K plus discretionary bonus We're Looking for a Senior Developer to Lead the Charge! Are you a C# Developer with a passion for building high-performance, scalable, and cutting-edge enterprise and eCommerce systems? Do you thrive in a fast-paced environment where innovation meets … execution? If so, we want YOU to join our dynamic team! As a Senior Developer , you'll be working in a team of skilled analysts, developers, and business experts, crafting the next generation of digital solutions on the Microsoft technology stack. If you're looking for a challenge where your skills are valued, and your expertise will directly More ❯

Contract Python Developer, Full Stack Software Engineer, with experience in FastAPI, Numpy, Scipy, Matplotlib, PyQt/PySide, TypeScript, React/Angular, SQL, Django, MongoDB, Redis, Docker, Kubernetes - £500 a day outside IR35 - 3 months with possible extension. We are seeking a Contract Python Developer to work with a sustainable engineering client based in the East Midlands. The role … technology and providing solutions worldwide. This is an innovative project in a technologically advanced facility, accessible from Nottingham, Sheffield, Derby, and Leicester. For more information and the detailed Python Developer job spec, feel free to contact me at . Required experience in most of the following areas: FastAPI Numpy, Scipy, Matplotlib PyQt/PySide TypeScript, React/Angular SQL More ❯

business is on the brink of a significant upward trajectory due to much larger sales opportunities, particularly within large-scale national education projects. We're looking for a talented Senior Software Developer to join our team and play a key role in shaping the future of our network solutions. Location: Coventry, UK (Hybrid with flexible remote options) About … the Role: As a Senior Software Developer, you'll be more than just a coder. You'll be a product developer who contributes to the design, development, and implementation of our cutting-edge network appliance products. This role requires a deep understanding of networking protocols, Linux systems, and Python programming, and the ability to apply that knowledge … market knowledge. Contribute to product management by reviewing market and technology trends. Who You Are - The Ideal Candidate: The ideal candidate for this role isn't just a skilled developer; they have a deep-rooted passion for technology. Perhaps you've been a bit of a computer enthusiast since childhood, always eager to understand the inner workings of systems More ❯

Senior React Native Developer - Mobile Apps & Web Dublin (Hybrid) or Remote within Ireland12 Month Contract with Potential Extension | Immediate StartPayrate: £495/day PAYE - £657/day UmbrellaWe're hiring a Senior React Native Developer to join a fast-paced, high-impact mobile development project focused on delivering robust, secure, and user-friendly mobile applications and More ❯

Senior Full Stack Web Developer Location: Fully in-house, Cardiff Salary: Up to £60,000 per annum We're looking for a Senior Full Stack Developer to take a key leadership role in building and maintaining high-performance web applications. Working in-house from our Cardiff office, you'll collaborate closely with designers, marketers, and other More ❯

Senior Full Stack Web Developer Location: Fully in-house, Cardiff Salary: Up to £60,000 per annum We're looking for a Senior Full Stack Developer to take a key leadership role in building and maintaining high-performance web applications. Working in-house from our Cardiff office, you'll collaborate closely with designers, marketers, and other More ❯

Senior React Native Developer - Mobile Apps & Web Dublin (Hybrid) or Remote within Ireland 12 Month Contract with Potential Extension | Immediate Start Payrate: £495/day PAYE - £657/day Umbrella We're hiring a Senior React Native Developer to join a fast-paced, high-impact mobile development project focused on delivering robust, secure, and user-friendly More ❯

Senior Full Stack Web Developer Location: Fully in-house, Cardiff Salary: Up to £60,000 per annum We're looking for a Senior Full Stack Developer to take a key leadership role in building and maintaining high-performance web applications. Working in-house from our Cardiff office, you'll collaborate closely with designers, marketers, and other More ❯

Senior Java Developer - Glasgow - Investment Banking - Data/Spring/Linux/SQL/SDLC/Equity Primary responsibilities: The developer will work within an agile squad developing within a system comprising of numerous Java services that interact via messaging to produce the product outputs in Real Time. Technologies and techniques such as highly multi-threaded Java More ❯

Home " Senior .NET Developer - musicMagpie JOB VACANCY AO Senior.NET Developer - musicMagpie Date: 23rd June 2025 Location: Stockport Company: AO Job Title: Senior .NET Developer - musicMagpie Department: Tech Contract Type: Permanent Working style: Hybrid We've recently welcomed musicMagpie to the AO family, a company that shares our passion for putting customers first, caring about colleagues … customers a smart, sustainable, and trusted way to buy, sell, and rent phones, tablets, games consoles, laptops, and other tech - all in one place. We're looking for a Senior .NET Developer, to be a core part of one our cross functional teams. Each of our cross-functional teams owns a series of platforms, from development and infrastructure More ❯

A well-established eCommerce agency is looking to add a talented and driven Senior Full Stack Developer to their team and take point on key clients projects. What youll be doing Our client is a Shopify Plus eCommerce agency specialising in designing high-quality websites for ambitious Luxury Brands. Over the last 10 years, they have gone from … investigate different routes for you career and be given ownership of, not just your solutions, but your own progression also. We are looking for a High-end Mid or Senior Developer working specifically Full Stack but with a focus on the Backend of high-end Shopify platforms. Ideally someone who has prior experience inside a Shopify Agency, Headless More ❯

Senior Software Developers specialising in trading systems required for an excellent client based in London. The successful Software Developer will join a small but extremely talented development team. You will be exposed to creating and maintaining our client's own applications based around a C#/.NET/SQL Server/ASP.NET universe. Many projects are greenfield projects More ❯

Senior Web Developer Newcastle upon Tyne with Hybrid working 2 days in the office per week Permanent, full time (37.5 hpw) Earn circa £50,000 pa negotiable based on skills and experience plus brilliant benefits including health cash plan! Home, a place where you belong Ever feel like youve got more to give, but your current roles holding … you back? This could be your moment. Were looking for a Senior Web Developer to join the Digital Development Team here at Home Group. Youll step into the role as our internal technical expert, the one others turn to for advice, ideas and clever fixes. Its a chance to lead from the front, shape how we build things … us, well help you take the next step. Generous pension and 3x salary life insurance. Check more benefits online! Ready to join us? Click APPLY NOW to see the Senior Web Developer job description, learn about us, and for help to apply. Dont wait, roles can close early, so apply and take the first step towards making a More ❯

Job Description Waracle is seeking a Senior Backend Developer to join our digital technology consultancy, renowned for its diverse and ambitious community of specialists in technology-driven transformation. We collaborate with clients to solve complex business and customer challenges, creating innovative digital products and services. Our projects involve business-critical IT transformations from strategy to operations. This is … a hybrid role based in any of our UK offices (Glasgow, Dundee, Edinburgh, London), requiring 2 days of on-site work per week. Are you an experienced Senior Backend Developer with expertise in .NET and C#? Do you want to influence technical directions and develop scalable solutions for leading clients? Join Waracle and take on a role that More ❯

Dynamics 365 CRM & Power Platform Solution Architect/Senior Developer This role is perfect for someone with deep technical expertise, strong stakeholder engagement skills, and a passion for building impactful enterprise-grade solutions using Microsoft technologies. Hands-on expert focused on the end-to-end implementation of Dynamics 365 CRM , including solution design, customization, integration, deployment, and user More ❯

Dynamics 365 CRM & Power Platform Solution Architect/Senior Developer This role is perfect for someone with deep technical expertise, strong stakeholder engagement skills, and a passion for building impactful enterprise-grade solutions using Microsoft technologies. Hands-on expert focused on the end-to-end implementation of Dynamics 365 CRM , including solution design, customization, integration, deployment, and user More ❯

Here at GoFind Recruitment, we are proud to be representing an industry leading and award winning Communication Systems business in their search for a skilled and driven Senior Mobile Developer, based at their offices in Kirkham. They are expanding their product capabilities and looking for a Senior Mobile Developer who thrives in JavaScript/React environments … mobile team. Keep abreast of emerging tools, frameworks, and best practices in mobile development and DevOps. Experience/Qualifications: 4+ years of commercial mobile development experience, ideally in a senior or lead capacity. Expert in JavaScript/TypeScript and React Native , with a strong understanding of hybrid vs native trade-offs. Proven ability to design, implement, and maintain complex More ❯

Are you ready to advance your career in web development? We are seeking an experienced Senior ReactJS Web Developer to join our dynamic Boardroom team. As a key member of our development team, you'll design, develop, and maintain high-quality web applications using ReactJS, contributing to enhanced user experience and optimized application performance. Job Responsibilities Execute software More ❯

Task Force Talent is seeking a senior software engineer/application developer with an active TS/SCI FSP security clearance to support a number of unique government contracts. Our client for this role is a small company with both commercial and government sector customers. They work on very interesting, usually highly technical roles in cybersecurity, software development More ❯

Senior Java Engineer - Belfast (Hybrid) Up to £80,000 + Exceptional Benefits Backend Java Global Impact Flexible Working MCS are delighted to be partnering with a forward-thinking global tech leader. This company is hiring for a Senior Software Engineer to join a highly collaborative engineering team tackling critical backend challenges. This is your chance to work on More ❯