Average Fullstack Developer salary in the UK

Senior Java Fullstack Developer - VP level - Investment Technology / FinanceAn industry leading global financial and technology organisation are looking for Senior Java Software Engineers with 7+ years’ experience, who have some experience in React or similar, plus modern JavaScript/TypeScript, who like to innovate and be part of a team creating next-generation investment finance technology.Based in London, you will be a key part of the team responsible for engineering a cloud-first Private Markets platform using a microservice architecture, supporting hundreds of client businesses, managing and analysing their portfolios. The team’s focus is to design and implement authorisation and permissions management using RBAC and policy based approaches. The team owns permissions management capabilities (roles, entitlements, lifecycle changes) and drives integration with the central authentication platform to enable consistent access control across applications and environments.The team is very quickly moving to AI-enabled development, and you will be at the heart of that transformation.Responsibilities Work closely alongside the Engineering Lead to deliver the technical strategy for your team.Deliver high efficiency, high availability, concurrent and fault tolerant software systems using API-First principles. Design, develop, and implement secure, scalable, and reliable micro-services to deliver client-facing applications using a Java backend and React frontend. Optimize performance and reliability through continuous testing, debugging, and refinement. Stay abreast of industry trends and emerging technologies to drive innovation and maintain a competitive edge, with a particular focus on AI. Provide technical leadership and mentorship to more junior developers, fostering a culture of learning and growth within the team. Ideal profile7+ years of professional experience in Java development, with a focus on building client facing APIs or platforms Strong written and verbal communication skills, with experience managing and mentoring diverse teams. Knowledge of building applications using AI tooling and frameworks (e.g. LLMs, prompt engineering, vector databases). Experience integrating AI/ML services into backend systems and APIs. Familiarity with AI driven development practices and tools for code generation and testing. Strong proficiency in Java and related frameworks (e.g. Spring Boot, Hibernate). Some experience in React or similar and modern JavaScript/TypeScript. Solid experience with object oriented design and applying standard design patterns Experience designing, building, and deploying scalable microservices using API first principles with REST and/or gRPC. Experience with API authentication and authorization mechanisms (e.g. OAuth, JWT). Hands on experience with engineering tools such as Git, Maven, unit and integration testing frameworks, and mocking libraries. Exposure to Docker, Kubernetes, and cloud services in an enterprise environment is beneficial. Experience with message brokers such as Kafka a plus. A friendly, positive, and can do attitude. A Bachelor’s degree in Computer Science, Engineering, or a related field.

I am currently working with a London-based financial services client who are actively seeking a Senior Fullstack Python Developer to work on the development of a next-generation research platform.What you'll need to succeed:Strong Python software engineering experience beyond exploratory scriptsHands-on experience working with notebooks as part of real analytical or research workflowsExperience building systems that support data analysis, simulations, or computational researchUnderstanding of the challenges around reproducibility, dependency management, and scientific software performanceComfortable working across the stack (backend + UI or APIs)Ability to collaborate closely with non-traditional "software engineer" users such as researchers, quants, or scientistsBackground in quantitative finance or research engineeringWhat you'll get in return:Up to £1100pd Umbrella.Initial 12-month contract with extensions.London-based hybrid working.What you need to do now:If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now.If this job isn't quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career.Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the T&C's, Privacy Policy and Disclaimers which can be found at hays.co.uk

Robert Half are currently working with an innovative client hiring a Senior Full Stack Developer to join a growing software business delivering automation solutions for public sector organisations, including councils, healthcare and emergency services.This is a hands-on role for a strong engineer who can build end-to-end solutions across modern web applications and cloud-based infrastructure. The product suite focuses on workflow automation, form handling, booking systems, live chat and AI-assisted process improvement.Key skills required:Strong experience with Python and ReactGood understanding of Azure cloud environmentsExperience with infrastructure as code, ideally BicepComfortable building full end-to-end systems, not just front-end or back-end componentsUnderstanding of secure development practices, ideally within regulated or security-conscious environmentsExperience with integrations, workflow/process automation, or systems such as CRMs, portals or booking platformsFamiliarity with Azure Durable Functions or similar state-managed cloud workflows is advantageousComfortable using modern AI-assisted development toolsWhat we're looking for:A highly capable software engineer rather than a pure AI specialist or DevOps engineerSomeone pragmatic, adaptable and comfortable in a small, fast-moving teamA developer who enjoys solving real-world process problems and can contribute ideas openlyGitHub examples or project work that demonstrate practical engineering capability will be highly valuedThis role offers a hybrid working patternRobert Half Ltd acts as an employment business for temporary positions and an employment agency for permanent positions. Robert Half is committed to diversity, equity and inclusion. Suitable candidates with equivalent qualifications and more or less experience can apply. Rates of pay and salary ranges are dependent upon your experience, qualifications and training. If you wish to apply, please read our Privacy Notice describing how we may process, disclose and store your personal data: