226 to 250 of 351 Senior Software Engineer Jobs in the UK

I am looking for a Senior Software Engineer who has experience in React and React Native to join an award-winning SaaS business. The ideal candidate will also need to have a proven track record of building and deploying products or platforms in a production environment, as well as have previous experience with interaction of clients and … Mentor junior developers and provide technical leadership. Stay updated with industry trends and technologies to guide technology decisions. Qualifications: Strong proficiency in React and React Native. Solid understanding of software development best practices. Excellent problem-solving and communication skills. Please note, you may be asked to make the occasional office visit. This is usually once or twice a month. More ❯

career development and the impact we have within the community. So, what’s your possible? Opportunity: This is more than just a job; it’s a mission. As a Senior Software Engineer you play a pivotal role in designing, developing and maintaining the critical infrastructure that powers our services. You will be self-driven and organised with … with complex challenges within a unique space. You’ll be at the forefront of delivering core solutions that have real world impact. Our UK Cyber & Intelligence business combines modern software development approaches with a rich heritage and experience in the Defence and security sectors. Our customers have complex and sensitive data and information requirements requiring a mission partner who … context, delivering and sustaining a portfolio of challenging technology projects at scale and pace, supporting them through an ambitious digital transformation programme. “My purpose; to lead a team of software engineers with the brightest minds, to push the boundaries and define possible together.” Responsibilities: Perform hands-on development and actively contribute to the code base including peer review of More ❯

career development and the impact we have within the community. So, what’s your possible? Opportunity: This is more than just a job; it’s a mission. As a Senior Software Engineer you play a pivotal role in designing, developing and maintaining the critical infrastructure that powers our services. You will be self-driven and organised with … with complex challenges within a unique space. You’ll be at the forefront of delivering core solutions that have real world impact. Our UK Cyber & Intelligence business combines modern software development approaches with a rich heritage and experience in the Defence and security sectors. Our customers have complex and sensitive data and information requirements requiring a mission partner who … context, delivering and sustaining a portfolio of challenging technology projects at scale and pace, supporting them through an ambitious digital transformation programme. “My purpose; to lead a team of software engineers with the brightest minds, to push the boundaries and define possible together.” Responsibilities: Perform hands-on development and actively contribute to the code base including peer review of More ❯

career development and the impact we have within the community. So, what’s your possible? Opportunity: This is more than just a job; it’s a mission. As a Senior Software Engineer you play a pivotal role in designing, developing and maintaining the critical infrastructure that powers our services. You will be self-driven and organised with … with complex challenges within a unique space. You’ll be at the forefront of delivering core solutions that have real world impact. Our UK Cyber & Intelligence business combines modern software development approaches with a rich heritage and experience in the Defence and security sectors. Our customers have complex and sensitive data and information requirements requiring a mission partner who … context, delivering and sustaining a portfolio of challenging technology projects at scale and pace, supporting them through an ambitious digital transformation programme. “My purpose; to lead a team of software engineers with the brightest minds, to push the boundaries and define possible together.” Responsibilities: Perform hands-on development and actively contribute to the code base including peer review of More ❯

As a Senior Software Engineer at Performativ, you'll lead the design and implementation of robust, high-throughput APIs and backend systems. Everything we build is grounded in open web standards -HTTP, JSON, webhooks, OpenAPI -and built for scale, reliability, and clear interoperability. You'll work on the core systems that power mission-critical financial infrastructure for More ❯

working and vibrant office spaces designed for collaboration and connection. Need support during the recruitment process? Just let us know - we're here to help. The Role As a Senior Software Engineer at Admiral Money, you'll play a key role in driving innovation across our technical product teams. You'll contribute to a wide range of … reviews and development of best practices Ensure a suitable level of documentation is maintained Effective contribution to team activities including Scrum Events Commitment to the continual improvement of the software, the team, the discipline, and the business Collaborate with Product Owners, Scrum Masters, Architects and other stakeholders Support the growth of the discipline through coaching and mentoring What We … Ability to work effectively as a member of a Scrum/Agile team Knowledge and awareness of accessibility standards and best practices Practical understanding of the importance of Secure Software Development practices Excellent written and verbal communication skills Desirable Skills/Experience Although not essential, we would be excited to speak to candidates who also have: Knowledge of other More ❯

working and vibrant office spaces designed for collaboration and connection. Need support during the recruitment process? Just let us know - we're here to help. The Role As a Senior Software Engineer at Admiral Money, your role will be to contribute to the varied development tasks undertaken by our technical product teams and champion technical excellence. You … reviews and development of best practices Ensure a suitable level of documentation is maintained Effective contribution to team activities including Scrum Events Commitment to the continual improvement of the software, the team, the discipline, and the business Collaborate with Product Owners, Scrum Masters, Architects and other stakeholders Support the growth of the discipline through coaching and mentoring Required Skills … Ability to work effectively as a member of a Scrum/Agile team Knowledge and awareness of accessibility standards and best practices Practical understanding of the importance of Secure Software Development practices Excellent written and verbal communication skills Desirable Skills/Experience Although not essential, we would be excited to speak to candidates who also have: Knowledge of other More ❯

Primary Function of the Position Reporting to the Network Development Lead, the Senior Software Engineer is responsible for the development, deployment of Network applications for the portfolio including: • Preparing deployment design using gitops approach or pipelines for different projects. • Deployment of applications running on Kubernetes Clusters • Development of network data applications which underpin the Core Product offering … integration into the k8s cluster • Preparing Docker build files Design and Build of Network applications: • Authoring of golang applications against a list of business requirements • Using best practices in software engineering such as SOLID • Produce unit tests to support network applications working with DevOps best practices • Preparing reports, manuals & other documentation on the network development tools Liaise and support … to provide support • Assist Product Managers with defining business requirements and specifications Research and evaluate emerging developments and best practise: • Providing coaching & mentoring of teammates. • Ensuring high standards of software quality are maintained through good practises & habits. • Assessing, preparing & distributing documentation of process & application changes within the team & affected stakeholders. Undertake ad-hoc projects and other activities as required More ❯

lie in cutting-edge technology and strategic innovation, originally developed for the gaming, entertainment, and defence sectors. Learn more about our mission at kallikor.ai . We are seeking a Senior Software Engineer to join our friendly, relaxed and inclusive team. You'll be developing and implementing models and simulations used in our digital twins. Our models typically … for problem-solving and a desire to work in a collaborative and supportive environment. You'll have the chance to work alongside a multidisciplinary team of scientists, modellers, and software engineers who collaborate closely with our product owners and customers to take modelling to the next level. Developing and implementing algorithms which result in plausible modelling behaviour Building pipelines … well-tested code following modern engineering practices and design patterns Create efficient, maintainable code that transforms prototype models into production-ready solutions Why you're made for this: Strong software engineering fundamentals including system architecture, design patterns, and development best practices Advanced Python programming skills with experience building complex, maintainable systems Professional software development experience with a track More ❯

at offer stage. Purpose of the role Join the BBC team responsible for the routing and resiliency layer serving most of our global Web and Apps products. As a Senior Software Engineer, you will play a key role in developing and operating a high-performance cluster of Elixir applications. Your work will directly impact millions of users … a culture of technical excellence and continuous learning, offering the opportunity to solve complex challenges at a massive scale. Your key responsibilities and impact Develop and maintain robust, scalable software in Elixir. Troubleshoot, debug, and resolve issues throughout the product life cycle. Implement and manage comprehensive monitoring, logging, and alerting for our services. Provision and manage cloud infrastructure using … AWS services. Contribute to code reviews and foster a culture of high-quality engineering. Your skills and experience ESSENTIAL CRITERIA: Extensive experience writing and maintaining robust production software in a fast-changing environment with rapid release cycles. Professional experience developing with functional programming languages (e.g. Elixir, Erlang, Clojure, etc.) or infrastructure-focused programming languages (Go, Rust, Ruby, etc.). More ❯

Our client, a prominent player in the insurtech sector, is seeking a passionate and skilled Java Software Engineer to join their dynamic team. This permanent role will involve working closely with engineering squads, architects, and platform teams to ensure the company's APIs are well-designed, discoverable, versioned, and aligned with modern integration patterns. The ideal candidate will … Act as a subject matter expert for APIs across squads and tribes, supporting design reviews, peer mentoring, and training. Participate in planning, backlog refinement, and sprint activities as a senior technical voice. Collaborate with architecture, security, and governance teams to align APIs with organisational principles. Contribute to Chapter and Guild forums, raising the bar for API engineering across the … career growth Work within a leading insurtech company Access to continuous professional development and training Supportive and collaborative team environment Comprehensive employee benefits package If you are a Java Software Engineer looking for a dynamic role within the insurtech industry, we would love to hear from you. Apply now to join our client's innovative team. More ❯

a very stable product that we've worked to get to and strive to maintain. Our team values trust, respect, collaboration, agility, and quality. About the Role: As a Senior Software Engineer you are expected to participate in technical discussions to come up with a design to meet Product Requirements, develop test driven code, pair with team … detailed specifications for the development of complex system components. • Complete complex bug fixes. • Work closely with other development team members to understand complex product requirements and translate them into software designs. • Successfully implement development processes, coding best practices, and code reviews. • Operate in various development environments (Agile, Waterfall, etc.) while collaborating with key stakeholders. • Train entry-level software More ❯

from multiple vectors. In this role you will be joining an exciting, innovative business new to the Visa family. At Featurespace, we strive to be the world's best software company at protecting our clients and their customers from fraud attacks. We do that with personality, heart and professionalism, cultivating an innovative, fun and positive team atmosphere where everybody … solving our clients' problems in new, innovative ways. We are always seeking to be the best at what we do and make our customers smile. The Opportunity As a Senior Software Engineer, you will help us achieve our goals and deliver success on behalf of our customer by working with product teams to specify, design and deliver … bespoke functionality. You will provide tactical software solutions outside the normal development cycle to support integration efforts.Supporting product and project teams in integrating ARIC with internal and third-party systems, developing new functionality as needed. You will review and investigate Engineering Triage requests, either addressing directly or referring to other Engineering teams; providing engineering resource by exception to support More ❯

From our integrations with logistics providers through to controlling our robotic warehouse, the global foundation of H&B is built on our supply chain. We're looking for a Senior Software Engineer to join one of our mission-focused engineering squads – the Price & Promotions team. What You'll Be Doing: You'll work in a collaborative agile … fulfilment centre (robots!) and manufacturing centre (really cool machines!), and possibly even visiting our office in Amsterdam and distribution centre in Beverwijk, Netherlands. Required Experience: A strong background in software development using Java, Kotlin , or similar. Experience working with frameworks and tools such as Spring Boot, Spring WebFlux, or Project Reactor . Practical experience and understanding of Apache Kafka More ❯

is a key partner to the markets business and has been a major contributor to its success. Role Overview/What will you do Citi is looking for a Senior Software Engineer (VP Level) to work on the market data pricing platform. We work in an Agile and DevOps manner, self-organize our work with BAs, speak … code following clean coding and SOLID design principles, instilling best engineering practices across the wider firm. Perform code reviews and contribute to the overall quality, maintainability, and testability of software developed. Adapt to changes in priorities and requirements. Work closely with clients and stakeholders to define feature requirements and deliver a product that materially impacts the business and improves … the end-user experience. Collaborate with teams to form a good working culture and continuously adapt to different working environments. Key Skills and Experience required Very strong software development experience. Strong knowledge of Java and RESTful web services Experience in developing performant code and solid understanding of Java threading. Experience working with Git source code management. Good understanding of More ❯

a very stable product that we've worked to get to and strive to maintain. Our team values trust, respect, collaboration, agility, and quality. About the Role: As a Senior Software Engineer you are expected to participate in technical discussions to come up with a design to meet Product Requirements, develop test driven code, pair with team … detailed specifications for the development of complex system components. • Complete complex bug fixes. • Work closely with other development team members to understand complex product requirements and translate them into software designs. • Successfully implement development processes, coding best practices, and code reviews. • Operate in various development environments (Agile, Waterfall, etc.) while collaborating with key stakeholders. • Train entry-level software More ❯

youre motivated by both writing high quality code and shaping solutions that make a genuine difference, this is the place for you. Role Overview We are seeking an experienced Senior Software Engineer ready to take on a leadership role within our expanding team. This position goes beyond development, youll help set technical direction, support and mentor colleagues … ASP.Net, SQL Server), while also demonstrating leadership, communication, and collaboration skills to influence outcomes across teams, clients, and industry partners. Key Responsibilities Lead investigation, analysis, and resolution of complex software issues and support cases. Provide technical leadership and mentorship to junior and mid-level developers. Drive code reviews, promote best practices, and contribute to architectural decisions. Collaborate with technical … Allen Bradley, Siemens). Previous work within industrial or food manufacturing settings. Awareness of traceability, compliance, or industry-specific standards in food production. Candidate Profile Proven track record in senior development or technical leadership roles. Strong debugging and analytical skills with a methodical approach. Confident communicator, able to influence stakeholders and lead initiatives. A collaborative leader who enjoys mentoring More ❯

an impact on the communities we serve as you help us advance health equity on a global scale. Join us to start Caring. Connecting. Growing together. Are you a Software Development Engineer looking to join an organisation where what you do genuinely makes an impact? Where you are empowered, heard and able to think creatively? Then look no … further because we are what you have been looking for! We are looking for a Senior Software Engineer with solid experience with C to come and join our talented and innovative team. This role involves implementing new features as well as solving Engineering problems for one of our established systems. The platform is used within secondary care … faster, better, and more accessible to all, and therefore you will play a key part in supporting us to deliver the best products within the healthtech industry. As an engineer at Optum UK you'll play a pivotal role in building a world class system that is transforming the health and lives of those around us. Primary Responsibilities: You More ❯

start up as they build an exciting platform from the ground up and they are going through an exciting period of growth. We're supporting them in hiring a Senior Software Engineer to help shape the technical vision and build scalable, AI-powered solutions from the ground up. This is a hands-on role where you'll More ❯

growing UK-based brand on a mission to close the gender gap in health outcomes, starting with smarter, tech-enabled weight-loss solutions for women. We're hiring a Senior Software Engineer to join a nimble, high-ownership team where experimentation, data, and continuous learning drive everything we do. You'll contribute to the development of seamless … new feature rollouts with correct analytics implementations. Act as a technical advocate for marketing to ensure full measurability and tracking fidelity. WHAT WE'RE LOOKING FOR: 5+ years in software engineering roles Strong experience in React, GraphQL, and TypeScript Familiarity with Vercel, Next.js, and modern CI/CD workflows Deep understanding of building customer-facing journeys (onboarding, checkout) Ability More ❯

Job Title: Senior Java Software EngineerSalary: £60,000 - £80,000 + packageLocation: Cardiff (onsite circa 2 days every other week)Clearance: Must be SC eligibleCPS Group are looking for a Senior Java Software Engineer to join a highly skilled engineering team delivering enterprise-scale solutions in an agile, collaborative environment based in Cardiff. You'll … be working across the full software development lifecycle, applying a DevOps mindset and contributing to the design and delivery of high-quality, secure, and scalable applications.This is a hands-on role where you'll apply strong technical expertise in Java and Spring, and ideally bring experience with containerisation and cloud environments.Key ResponsibilitiesDesign, build, and maintain high-quality Java applications.Contribute … to the development of microservices and modern architectures.Work with Spring framework to deliver scalable solutions.Apply best practices in software engineering including TDD, CI/CD, and automation.Collaborate within an agile team to drive continuous improvement.Ensure solutions meet security and performance requirements.Key Skills RequiredStrong commercial experience with Java.Hands-on expertise with Spring.Knowledge of software design patterns and development best More ❯

third parties to utilize our inventory. We also provide tools for our customer service team to deliver world-class service to travelers and operators globally. We're seeking a Senior Software Engineer to join our fast-growing team. This role is open to candidates within a 2-3 hour commute of our offices in Oxford or London. More ❯

all powered by the Foundational Tech team - what's forming on the horizon is a connected Battlefield universe filled with immersive experiences built on our unique DNA. As a Senior Software Engineer, you will work at our Guildford office on a hybrid basis and report to the Criterion Head of Technology. You will also work with our More ❯

Senior HPC Software Engineer Closing Date: 2nd October 2025 Location: RG7 4PR, located between Reading and Basingstoke, with free onsite parking . Due to the classified nature of the work involved, there are limited opportunities to work from home in this role click apply for full job details More ❯

Job Title: Embedded Software Engineer Location: Warrington, Onsite Salary: Up to £65,000 (Depending on Experience) We are looking for a highly skilled Embedded Software Engineer to join an innovative engineering team. This role offers the chance to work on cutting-edge embedded systems, contribute to the design of next-generation products, and play a key … part in shaping the companys technical roadmap. You will be involved in the full software development lifecycle, from concept and design through to deployment, validation, and continuous improvement. Key Responsibilities Design, implement, and optimise embedded software for real-time systems and safety-critical applications. Develop firmware for ARM Cortex, PIC, or STM32 microcontrollers using C and C++. Integrate … and test communication protocols including SPI, I2C, CAN, UART, USB, TCP/IP, and Modbus. Contribute to board bring-up, debugging hardware/software interfaces, and reading schematics to support hardware integration. Work with RTOS (e.g., FreeRTOS, Zephyr) and bare-metal systems to deliver reliable and efficient solutions. Ensure compliance with industry standards (e.g., MISRA C, ISO 26262, IEC More ❯