376 to 400 of 836 Senior Developer Jobs in the UK

Senior Software Developer, you will shape the future of our internal development processes, building high-profile, full-stack systems that empower our global engineering teams. Full-time Closes 09/09/2026 The Platform team delivers solutions designed to streamline and enhance internal development processes through automation ...

Senior Backend Developer - Blockchain Infrastructure London, England Who We Are: Galaxy Digital Inc. (Nasdaq: GLXY) is a global leader in digital assets and data center infrastructure, growing the economy that runs on code. Galaxy delivers the onchain infrastructure that connects institutions to digital assets, including trading, advisory, asset ...

Salt seeks a Senior Java Developer to design, develop, and maintain secure, scalable microservices on AWS. You’ll collaborate with platform engineers, QA, and product teams, following DevOps and security best practices. Hybrid role with 1–2 days on-site, starting ASAP for a 3–6 month contract. ...

scalability of systems vital for public safety and essential services. 22nd September, 2026 We are looking to recruit an experienced and highly skilled Senior C# Developer to lead the design, development, and optimisation of our mission-critical communication infrastructure. Working alongside other Software application team members, the candidate …/CD) pipelines. Troubleshoot and resolve the most complex technical issues, ensuring maximum system uptime and reliability. Mentor and guide mid-level and senior developers, fostering a culture of technical excellence and innovation. Day to Day: Our customer base includes many different industries and markets around the world. ...

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 ...

seeking a Senior Web Developer to design, build and maintain high-quality web applications for our clients and in-house products. You will take ownership of features end-to-end and help shape our engineering standards in a friendly, hybrid team. Responsibilities Develop and maintain web applications using ...

Title: Senior Java Developer with SolaceJob Location: London, UK (Hybrid)Job Type: PermanentMandatory skills: Java, Spring boot and SolaceSkillsDesign, develop, and maintain high-quality Java with Solace/ION/Python applications using SpringBoot.Proficiency in Java core 8+ is a must.Proficiency in Junit.Implement Solace publication/subscriptionImplement ...

backend developer who's just as comfortable in a Kubernetes cluster as you are in a PHP codebase, and fancies Friday afternoons off? We're looking for a Senior Backend Developer to join our growing digital team, taking on real ownership of our backend systems ...

This creates new opportunities for driven and skilled individuals to join one of the fastest-growing consultancies globally. Job DescriptionWe are seeking an experienced Senior Full Stack Java Developer to join our UK Digital & Cloud Practice. Our Digital Practice is expanding rapidly and there will be an opportunity … inclusion and belonging schemes. And many more exciting benefits... drop us a note to find out more. SummaryType: Full-timeFunction: Information TechnologyExperience level: Mid-Senior LevelIndustry: Information Technology And Services ...

100000.00 - 120000.00 per annumLondonPermanentExcellent opportunity for a Senior Software Developer to play a key role in architecting, developing, and enhancing our clients in-house trading and research systems. This is an opportunity to work on greenfield projects, influence architectural decisions, and directly impact systems that support real-world … trading strategies. As a senior member of the team, you will contribute both technically and strategically, helping shape development standards, performance optimisation, and system scalability. You will primarily work within a C#/.NET/SQL Server/ASP.NET ecosystem, developing high-performance, reliable, and maintainable applications. Key ResponsibilitiesDesign ...

currently seeking an experienced Senior .NET Developer to join our established team. The ideal candidate will have a proven track record of software architecture, design, coding and technical development process of building web applications on the Microsoft .NET technology stack. We develop with both .NET Framework and .NET … excellent time to join a vibrant company as we are growing fast and there are plenty of opportunities to grow within the company. The senior management team strives to make sure the working environment is relaxed but challenging. If you share our passion and you pride yourself on your ...

Accenture MBG UK is seeking a Microsoft Power Platform Senior Developer to join our London delivery team. You will lead hands-on development across Power Apps, Power Automate, and Dataverse, setting technical direction and mentoring junior engineers. You will collaborate with architects and delivery managers on enterprise programs ...

looking for a Senior Full-Stack Developer to play a pivotal role in leading the design, development, and deployment of complex software solutions. You will architect and maintain data engineering pipelines, backend services, APIs, demonstrate consideration for design and UI/UX when building user interfaces, delivering reliable ...

Senior PHP Developer – City London The ideal candidate will have a minimum of 8 years commercial experience with PHP and MySQL working on a Linux server with good experience of Database Optimisation and Caching Technologies. You will sit just below the Tech Director and help perform some … task that he does which are causing bottlenecks. You will be working hand in hand with our passionate in-house developer team helping improve and grow, our high-end, scalable e-commerce platform. You will be expected to do development work, along with getting involved in spec writing, assisting ...

looking for a Senior Full-Stack Developer to play a pivotal role in leading the design, development, and deployment of complex software solutions. You will architect and maintain data engineering pipelines, backend services, APIs, demonstrate consideration for design and UI/UX when building user interfaces, delivering reliable ...

CyberNorth is seeking a Senior Java Developer to join our engineering team in Newcastle, contributing to enterprise-scale applications and microservices. You’ll design, develop, test and deploy robust software within Agile delivery squads. The role emphasizes hands-on Java 8+ development, Spring Boot, RESTful APIs and collaboration ...

Senior Frontend Developer up to £85,000 Remote I'm currently working with an innovative and exciting client who provide virtual learning spaces that are fully interactive. Their Virtual Reality experiences have massive applications within the Education and Healthcare sectors. Responsibilities: Design, develop, and implement new features ...

AVEVA is creating software trusted by over 90% of leading industrial companies. Job Title: Senior Optimisation Developer Location: Cambridge, United Kingdom (Hybrid) Employment Type: Full-time The job We are looking for a Senior Optimisation Developerwith a strong mathematical background and experience in numerical modelling or mathematically ...

Waracle are looking for a Senior Mobile Security Developer (Inside IR35) for an exciting new 6-month initial contract joining our world-class digital technology consultancy, home to a diverse, smart, curious and ambitious community of specialists in technology-driven transformation. We work with ambitious clients to help … professional and personal life, with 2 days a week spent connecting with colleagues in our London office oron client site. The Role As a Senior Mobile Security Developer, you will define squad-level technical architecture and technical approach. You are a technical expert who ensures quality, security ...

client is in the Financial Sector and is looking to grow the team with a new Senior Developer. This role can be done remote with weekly meet ups in Birmingham or London on a Wednesday. The technology function is around 80 people total and you will work … Agile team of 8. Client Details Our client is in the Financial Sector and is looking to grow the team with a new Senior Developer. This role can be done remote with weekly meet ups in Birmingham or London on a Wednesday. The technology function is around 80 people ...

clients locally based skills and technical expertise to drive innovation and adoption of new technology. Your role and responsibilities We are seeking a Senior Front-End Developer to join IBM, delivering innovative digital solutions across public sector and defence accounts. Due to the nature of the work, this … flexible working pattern, please talk to our recruitment team to find out if this is possible in the current working environment. Job Title Senior Front End Developer - eSC or eDV Clearance Required Job ID 117214 City/Township/Village State/Province Hampshire, Gloucestershire, London, City ...

Senior Software Engineer – Ultra Low Latency Risk Engine Developer Overview Citi Equities Technology | Equities Electronic Execution (Electronic Trading) Citi's Equities Technology organization is seeking a Senior Software Engineer – Ultra Low Latency Risk Engine Lead Developer to join the Equities Electronic Execution (Electronic Trading) technology team. … maintain tooling for trading platform monitoring, real-time risk/position reconciliation, application recovery, and disaster-recovery/failover for the Risk Engine. Provide senior-level production support escalation for latency and risk-control incidents, including root-cause analysis of performance regressions across application, messaging, OS, and hardware layers. ...

Searchability® invites a Senior .Net Developer to York, with a hybrid model requiring 2 onsite days weekly. You will help transition our Windows Forms-based client into a web-based platform and migrate features into a streamlined microservices framework. Collaborating with product owners and our current application developer ...

Trading Ltd is seeking a Senior .NET Developer to design, build, and maintain multi-asset class applications. The role focuses on Angular front-end (React acceptable) with C# .NET Core backend, Web API, and strong UX considerations. You will collaborate with IT and business teams, contributing to architecture ...

many of our employees stay with us long term. Due to an internal promotion, we now have a vacancy for a Senior Infrastructure Developer to join our amazing Infrastructure team so, if you’re experienced in backend development, cloud infrastructure and driving secure, scalable and high performing platform ...