726 to 750 of 924 Permanent Senior Software Engineer Jobs

EIT Oxford fosters a culture of collaboration, innovation, and resilience, valuing diverse expertise to drive sustainable solutions to humanity's enduring challenges. Position We are seeking to recruit a Senior Full Stack Software Engineer to help design, build, and maintain user-facing components of our scalable, high-performance data platform supporting our bioinformaticians and science teams. This More ❯

Senior Java Developer - Java, Springboot & AWS – paying up to £650/day (Inside IR35) – Hybrid (2x a week - London) – 6 month contract Our client is seeking a Senior Java Developer who is passionate about clean code, cloud-native systems, and building technology that makes a real impact. This is a unique opportunity to work in an agile, high More ❯

Senior Java Developer - Java, Springboot & AWS – paying up to £650/day (Inside IR35) – Hybrid (2x a week - London) – 6 month contract Our client is seeking a Senior Java Developer who is passionate about clean code, cloud-native systems, and building technology that makes a real impact. This is a unique opportunity to work in an agile, high More ❯

As an embedded software engineer would you love to join a specialist organisation working directly with the world's leading retailers and blue chip companies? You have the opportunity to work as part of a highly skilled team in the hands on development of new products from initial prototype board stage while also adding features to existing products. More ❯

Job Title: Mid-Senior Java Engineer Location: London (Hybrid - 2-3 days in-office) Salary: Up to £85,000 per annum + Benefits Sector: Financial Services About the Role: We are seeking a Senior-Level Java Engineer to join a dynamic financial technology team in London. You will play a key role in developing, maintaining, and … per week in the office. Key Responsibilities: Design, develop, and maintain high-quality Java-based applications for financial services. Collaborate with cross-functional teams to deliver robust and scalable software solutions. Ensure code quality, security, and performance standards are met. Work on both greenfield and existing applications, improving architecture and implementing best practices. Troubleshoot and resolve complex technical issues. … as AWS, Azure, or GCP. Strong problem-solving skills and a keen attention to detail. Experience in financial services or fintech is highly desirable. If you are a Java engineer looking to take the next step in your career within the financial sector, apply now More ❯

business that encourages collaboration, champions the idea that the sum is greater than its parts, then we want to hear from you. About you You will be an established Senior Engineer with a diverse Backend focused skill set. We would ideally like to see a strong focus with Golang as your primary language but if you have a … Data Science is advantageous but not essential. Experience working in agile teams and CI/CD environments is beneficial. You will join a highly talented and motivated team delivering software services and products built on patented database technology. Requirements include at least 7 years of professional software development experience, with a focus on Backend engineering. Our backend tech More ❯

Build agentic systems for the world’s biggest banks | Senior TypeScript Engineer | Hybrid With the new year just around the corner, is now the right time to jump ship? You would get the chance to join a fast-growing fintech that is building an agentic process automation platform used by major UK banks to transform how regulated financial … decisioning for banks. The environment is fast, outcome-driven, and highly collaborative, with engineers owning problems end-to-end across product, backend, and infrastructure. The role They’re hiring Senior Full-Stack Engineers (backend-leaning, ~65/35) to help scale intelligent, high-performance systems across: Node.js, TypeScript, GraphQL AWS serverless architecture React (supporting product UI work) Postgres, Redis More ❯

Build agentic systems for the world’s biggest banks | Senior TypeScript Engineer | Hybrid With the new year just around the corner, is now the right time to jump ship? You would get the chance to join a fast-growing fintech that is building an agentic process automation platform used by major UK banks to transform how regulated financial … decisioning for banks. The environment is fast, outcome-driven, and highly collaborative, with engineers owning problems end-to-end across product, backend, and infrastructure. The role They’re hiring Senior Full-Stack Engineers (backend-leaning, ~65/35) to help scale intelligent, high-performance systems across: Node.js, TypeScript, GraphQL AWS serverless architecture React (supporting product UI work) Postgres, Redis More ❯

Developer Location- Bournemouth, UK Onsite - Work from office 5 days Employment type- Contract Must have: Java, Spring, Microservices and AWS We are looking for 8+ years experienced highly skilled Software Engineer with strong experience in Java, Spring, and Microservices development, along with exposure to big data processing and cloud-native technologies. The ideal candidate will design, build, and More ❯

Role: Senior Developer Location: Hybrid/Trowbridge - 2 days office working Salary: Up to £75k Tech: React, Node, AWS, Typescript Are you a Senior Developer with an appetite to move into a lead role in the future? I’m currently working with a consultancy in Trowbridge who are looking to add another senior developer to the team … and a strong team culture, this role will be incredibly rewarding. The role has come about due to expansion and the constant stream of more business coming in, the Senior Developer will be someone who has experience in a client facing role but still very much enjoys being hands on coding and leading from the front. What you’ll More ❯

Senior Java Developer required for a well-funded and ambitious tech business entering its next scale-up phase. This is a fully remote position paying up to £65K + benefits, with meaningful technical ownership, visibility, and genuine opportunity to grow into Tech Lead as the team expands. This is a CTO whose serverless architecture has previously been recognised by … AWS; driving proven, high-performing software solutions on a scalable, extremely low-latency foundation. Although a start-up business, they are well funded and this is someone that we know extremely well, having supported them on numerous ventures. They bring award-winning technology leadership and a proven record of building scalable products We're looking for a Senior … Serverless/Lambda) Focus on well-tested solutions, inc Automation Tomcat Server High-throughput/low-latency architecture Some Leadership/Mentoring experience You'll be working on a software solution that helps stakeholders and asset owners make informed and data-driven decisions, reducing risk and therefore accelerating decision making, cost reduction, and business growth. This is a very More ❯

Overview Quest Software's AI Center of Excellence in Cork, Ireland is seeking a Software Developer with expertise in the Microsoft technology stack. The ideal candidate will have a strong foundation in .NET technologies, C#, and SQL Server, and will contribute to the design, development, and maintenance of scalable enterprise applications. As the central hub for AI innovation … worldwide. In this role, you will design and implement AI-powered solutions on Microsoft Azure, take ownership of specific AI system components, and collaborate closely with data scientists and senior engineers to deliver scalable, production-ready AI systems. Responsibilities Design, develop, test, and maintain web and desktop applications using Microsoft technologies (.NET Core/.NET Framework, C#, ASP.NET, Blazor … Collaborate with cross-functional teams including product managers, designers, and QA engineers Participate in code reviews, debugging, and performance tuning Produce testing documentation and demos Adhere to Quest's software development methodology and security best practices Accurately estimate work and participate in planning activities Stay current with emerging technologies and apply them to improve development practices Honor commitments to More ❯

never been easier for individuals and teams to write faster, better code. Locations In this role you can work from Remote, United Kingdom Overview GitHub is the home for software development, where developers collaborate to build the world's leading AI-powered developer platform. In the GitHub Code Scanning team, we are passionate about securing the world's software - both Open Source and Enterprise. We believe that the best way to secure software is to detect security issues early in the development process, and actively facilitate their remediation as part of the developer workflow. Our team develops and operates the Code Scanning product that's part of GitHub's Code Security offering. Code scanning uses world-class … be working in a full-stack agile engineering team that's part of the larger Code Scanning group working in Security Products. You'll work with and learn from Senior and Staff engineers as well as influence team and product direction. In addition, we support and reward spending time on improving diversity, inclusion, and belonging, as well as other More ❯

Job Title: Mid-Senior Java Engineer Location: London (Hybrid - 2-3 days in-office) Salary: Up to £85,000 per annum + Benefits Sector: Financial Services About the Role: We are seeking a Senior-Level Java Engineer to join a dynamic financial technology team in London. You will play a key role in developing, maintaining, and More ❯

2x Senior .NET Developers – Public Health Job Title: .NET Developer Location: 1–2x/week in Leeds Day Rate: £500/day Inside IR35 Duration: Until March 2026 NHS or Central Government experience is ESSENTIAL Brio Digital are supporting a HealthTech consultancy who are currently looking for 2x .NET Software Engineers . You’ll be working on a More ❯

We are looking for passionate and skilled software engineers who have exceptional problem solving and critical thinking skills, analytical with high attention to detail, and self-motivated! Salary : up to £64,000 depending on experience Dynamic (hybrid) working : 5 days per week on-site, due to workload classification Security Clearance : British Citizen or a Dual UK national with British … and treatments Facilities : Fantastic site facilities including subsidised meals, free car parking and much more The opportunity: The Human Machine Interface (HMI) and Cyber team is looking for principal software engineers to join us developing the future laser defence capability for the Royal Navy! We are looking for engineers with both a deep and broad range of experience in … software engineering, from requirements to certification, who have taken the lead in technical implementation and delivery of complex solutions as well as supporting and mentoring other engineers in their team. We are committed to developing careers and skillsets by supporting our teams' personal development whilst ensuring that a healthy work/life balance is maintained! What we're looking More ❯

We are looking for passionate and skilled software engineers who have exceptional problem solving and critical thinking skills, analytical with high attention to detail, and self-motivated! Salary : up to £64,000 depending on experience Dynamic (hybrid) working : 5 days per week on-site, due to workload classification Security Clearance : British Citizen or a Dual UK national with British … and treatments Facilities : Fantastic site facilities including subsidised meals, free car parking and much more... The opportunity: The Human Machine Interface (HMI) and Cyber team is looking for principal software engineers to join us developing the future laser defence capability for the Royal Navy! We are looking for engineers with both a deep and broad range of experience in … software engineering, from requirements to certification, who have taken the lead in technical implementation and delivery of complex solutions as well as supporting and mentoring other engineers in their team. We are committed to developing careers and skillsets by supporting our teams' personal development whilst ensuring that a healthy work/life balance is maintained! What we're looking More ❯

Keelvar has an exciting opportunity to join our Engineering & Product Team as a Senior Backend Software Engineer. This role is remotely based in Ireland (ideally in Cork). Reporting to one of our Engineering Managers, you will be part of a critical group responsible for supporting and building new and existing features with a cross functional team. The … successful candidate will join a group of engineers from different backgrounds including Software Dev, Data Science, UI and Product. Responsibilities Work in a cross functional development team analysing product feature requests and designing solutions. Build and maintain backend services with a strong focus on performance, maintainability, and production-readiness. Take a hands on approach to shipping high quality code … Collaborate with colleagues across the organisation to ensure vision is delivered. Assist and mentor junior team members. Your Profile Strong proficiency and at least 7 years of experience in software development, ideally developing SaaS solutions. Experience in Python and its ecosystem. Experience of working with CI/CD processes and in an agile, product led environment. Experience designing distributed More ❯

Senior Java Developer - FinTech Start-up (Remote, UK) Salary: £50,000–£80,000 + EMI Stock Options Location: Fully Remote (UK or Europe-based preferred) Company: High-Growth FinTech Start-up Join a Fast-Growing FinTech Revolutionising Payments We’re partnering with a venture-backed FinTech start-up that’s redefining how businesses manage international payments and currency conversion. … manual processes, and outdated broker models - their use of AI is pivotal to their mission and the "how". The business is now looking to hire a hands-on Senior Java Developer to help scale their platform and shape the next phase of growth. The Opportunity This is a rare chance to join a well-funded, product-led start … Spring Boot Infrastructure: AWS, Kubernetes APIs: Currency Cloud (and similar FX/payment APIs) Tools: GitHub, Slack, AI-driven automation tools Why Apply? If you’re an experienced Java Engineer ready to step up into technical leadership or someone who wants to make a real impact in a product-led FinTech - this is an opportunity to help shape an More ❯

Title: Forward Deployed Engineer – AI & Customer-Facing Technical Leader Location: Remote Travel: Customer visits 4–5 days/month; occasional team gatherings Salary: Senior: €130–150k base + growth trajectory Principal: €160–200k base + package discussion Tech: Python, JavaScript, Azure, AWS, AI, LLM's, RAG Industry: AI Consultancy The Role We’re looking for talented engineers to … join our customer-facing AI practice, from Senior Forward Deployed Engineers through to Principal-level AI technical leaders . You’ll work directly with clients to uncover problems, build prototypes, and guide full AI-enabled solution lifecycles. This is a role for engineers who: Enjoy building real software that makes a difference Are passionate about AI and its … RAG) systems Design evaluation frameworks addressing bias, hallucination detection, and business impact Explore novel AI applications while integrating traditional ML techniques where appropriate Who We’re Looking For For Senior Engineers: 5–8+ years building robust, scalable software systems Full-stack development capability across modern technologies Client-facing experience or technical consulting skills AI curiosity and hands-on More ❯

Product Engineer - Go, Typescript, Postgres, Node, React UK Remote first, London Joining a company that is making a priority to change and make tax automation smoother for businesses everywhere. Theengineering team is building scalable, reliable APIs that will power their platform in making the workflows more efficient. They are now looking for several Software Engineers who thrive on More ❯

Role : Senior .Net Developer Comp: £65,000-£75,000 Location : Central London (On-site). About the Role: As a Senior .NET Developer, you’ll play a key role in designing, developing, and maintaining software applications. You’ll collaborate closely with cross-functional teams to translate user needs into technical solutions that are robust and user-friendly. More ❯

Role : Senior .Net Developer Comp: £65,000-£75,000 Location : Central London (On-site). About the Role: As a Senior .NET Developer, you’ll play a key role in designing, developing, and maintaining software applications. You’ll collaborate closely with cross-functional teams to translate user needs into technical solutions that are robust and user-friendly. More ❯

Location: London (3 days a week onsite) | 💰 Up to £80,000 per annum We’re looking for a Senior Backend Engineer to join a high-impact product team shaping the future of travel loyalty experiences. You’ll help design and build scalable backend systems that power a seamless journey for millions of travellers around the world. What You … technical mentorship and contribute to engineering best practices. Advocate for new tools, technologies, and frameworks to drive innovation. What We’re Looking For 5+ years of experience in backend software development with strong CS fundamentals. Proven experience designing and developing APIs and distributed systems. Strong sense of ownership with a focus on performance, reliability, and maintainability. Excellent communication and More ❯

Location: London (3 days a week onsite) | 💰 Up to £80,000 per annum We’re looking for a Senior Backend Engineer to join a high-impact product team shaping the future of travel loyalty experiences. You’ll help design and build scalable backend systems that power a seamless journey for millions of travellers around the world. What You … technical mentorship and contribute to engineering best practices. Advocate for new tools, technologies, and frameworks to drive innovation. What We’re Looking For 5+ years of experience in backend software development with strong CS fundamentals. Proven experience designing and developing APIs and distributed systems. Strong sense of ownership with a focus on performance, reliability, and maintainability. Excellent communication and More ❯