1 to 25 of 45 Permanent Senior Software Engineer Jobs in the South East

Senior Software Engineer - UI/GUI (C# WPF/XAML) Portsmouth, Hampshire | Up to £85,000 + Benefits | Onsite | 4 or 5 day working week Some projects are maintenance. Some are migrations. And then something genuinely rare comes along - a blank canvas, a serious engineering challenge ...

Senior Software Engineer - Server Side (C#/Worker Service/ORM) Waterlooville, Hampshire | Up to £85,000 + Benefits | Onsite | 4 or 5 day week Some projects are maintenance. Some are migrations. And then something genuinely rare comes along - a blank canvas, a serious engineering challenge ...

Senior Software Engineer - Server Side (C#/Worker Service/ORM) Waterlooville, Hampshire | Up to £85,000 + Benefits | Onsite | 4 or 5 day week Some projects are maintenance. Some are migrations. And then something genuinely rare comes along - a blank canvas, a serious engineering challenge … Message Bus, Pub/Sub, SignalR, gRPC, TCP/IP, Sockets, Data Flow TPL Visual Studio Nice-to-have: Managed C++, defence/naval software background What We're Looking For 6+ years C# server-side engineering experience Solid ORM, SQL databases, DI and unit testing Modular, composable architecture ...

Senior Software Engineer - UI/GUI (C# WPF/XAML) Portsmouth, Hampshire | Up to £85,000 + Benefits | Onsite | 4 or 5 day working week Some projects are maintenance. Some are migrations. And then something genuinely rare comes along - a blank canvas, a serious engineering challenge … security clearance Onsite in Portsmouth (circa 30-person office). 40 hours over 4 or 5 days with start/finish flexibility. Degree in Software Engineering or related discipline preferred. Interested? This role is being managed exclusively by Spectrum IT Recruitment. Contact Daniel Sumpter, Senior Consultant, Spectrum ...

Role: Senior Software Engineer Location: Milton Keynes (2-3 days on-site per week) Salary: £60,000 - £75,000 SUMMARY An exciting opportunity to join an experienced team with responsibility for elements of a significant public sector deployment of IT solutions and systems enabling bespoke software. Working … rollout, and support of complex solutions. The successful candidate will work alongside a diverse team consisting of customer representatives, solution architects, academia, and leading software development companies. RESPONSIBILITIES Front-End Development Designing and implementing user interfaces (UI). Using HTML, CSS, JavaScript, Typescript and React framework. Ensuring responsiveness ...

Senior Software Engineer will work within the Systems and Software team in the Programmes area of STS Defence, developing and maintaining software throughout the Software Development Lifecycle from requirements elicitation, through to in service delivery. The post will provide technical leadership on software projects for key stakeholders and on software development activities undertaken by the company. This includes responsibility for managing code and quality reviews to ensure relevant quality standards are met across the software team. The Senior Software Engineer will also assist in support of wider ...

Role: Senior Software Engineer - .Net, Angular, Azure Location & Working Arrangements: Office in Bedfordshire, hybrid working policy of 2 days in the office per week Salary: up to £80k plus great benefits, including enhanced pension and 35 hour working week Youve been looking for a great company thats … centered around C#, .Net 8+, Azure, TypeScript, and Angular. I am looking for someone who is the full package- not only a superb software engineer, skilled in the above technologies, who loves to create efficient, elegant, and well-documented technical solutions, but also who is a great person ...

Senior Software Engineer Location: Near Winchester Salary: Up to £65,000 Clearance: Must hold SC Clearance and be eligible for DV To Apply: Email Overview A leading technology organisation within the defence and national security sector is seeking a Senior Software Engineer to join … opportunity to work on secure, mission-critical systems using modern cloud-native technologies within a collaborative and highly technical environment. The team delivers innovative software solutions across complex programmes supporting national security and defence operations. Key Responsibilities Design, develop, and maintain scalable software solutions Collaborate within Agile engineering ...

Help save lives every day. Are you a Software Engineer looking for a new challenge with real purpose? Join Sopra Steria, the force behind STORM the mission-critical command and control system trusted by UK emergency services. Were hiring Software Developers to support the ongoing development … office for team collaboration and planning. You do need to be eligible for NPPV3 clearance. What youll be doing: Designing, developing, and maintaining scalable software applications. Writing clean, efficient, and well-documented code. Contributing across the full software development lifecycle. Collaborating with senior developers and architects ...

Senior Software Engineer Location: Near Winchester Salary: Up to £65,000 Clearance: Must hold SC Clearance and be eligible for DV To Apply: Email Overview A leading technology organisation within the defence and national security sector is seeking a Senior Software Engineer to join ...

Integrating scalable production-grade AI/ML systems into engineering applications Guildford to £80,000 plus benefits This engineering software company are integrating AI and machine learning features into their application suite, and seeking a skilled traditional software engineer with experience working on similar projects. You will ...

Title: Software Engineer Type: Permanent Location: Farnborough, UK Clearance: SC Cleared Role Overview: Are you passionate about building scalable software solutions and working with modern technologies in a collaborative environment? Our client is looking for a talented Software Engineer to join a dynamic development team … contributing to the design, development, and continuous improvement of high-quality software systems. This role offers the opportunity to work across both front-end and back-end technologies while embracing modern DevOps practices and cloud-based solutions. Key Responsibilities: Collaborate closely with cross-functional teams to design, develop ...

Role: Senior Software Engineer Location: Milton Keynes (2-3 days on-site per week) Salary: £60,000 - £75,000 SUMMARY An exciting opportunity to join an experienced team with responsibility for elements of a significant public sector deployment of IT solutions and systems enabling bespoke software. Working ...

Senior Software Engineer - DV Cleared Location: Portsmouth, UK (3 days per week onsite) Employment Type: Permanent, Full-time Security Clearance: Active MoD DV Clearance Required Salary: £70,000 - £90,000 per annum iO associates are seeking an experienced Senior Software Engineer to support … maintenance, enhancement, and modernisation of complex software systems within a secure environment. Requirements Active DV clearance. Strong software engineering experience in Python and C/C++ development. Strong understanding of software architecture, system integration, and modern engineering practices. Proven ability to lead technical investigations, solve complex problems ...

Senior Software Engineer - Abingdon, Oxfordshire - Permanent Hybrid 3 days on site, 2 days remote Required: - 5+ years of professional software engineering building & shipping complex, production-grade applications - not solely Scripting, prototyping, or research. Strong proficiency in C#/.NET; & also, C/C++; demonstrated ability … work across both languages in a single product ecosystem. Undergraduate (or higher) degree in Computer Science, Software Engineering, or a closely related engineering discipline. Any Eclipse RCP or IDE's nice to have. Comfort & curiosity with AI-assisted development tools & a track record of staying ahead of technology trends. ...

Senior Software Engineers (Level 1 & Level 2) 📍 Portsmouth (Hybrid – ~1 day per week/Fortnight in the office) 💰 Level 1: Up to £75,000 | Level 2: Up to £85,000 + Bonus + Equity 🌍 Build the Future of Payments with AI at the Core HireQ Talent is partnering … adoption of agentic AI , enabling smarter automation, enhanced decision-making, and more intelligent, adaptive systems across their platform. They’re now hiring two Senior Software Engineers to play a critical role in this journey: Senior Software Engineer (Level 1) – up to £75k Senior Software ...

Senior Software Engineer - Geospatial Data (Contract) Location: Farnborough (3 days per week onsite) Contract Length: Initial 3-month contract IR35 Status: Outside IR35 Security Clearance: All candidates must be eligible for security clearance prior to appointment. We are seeking an experienced Senior Software Engineer ...

Cleared Senior Software Engineer Permanent Location: Portsmouth/Home (on site 3 days a week) Salary: £80,000 - £90,000 (+ benefits) Skills: Python/C++/Legacy Modernisation/Complex Systems, MOD DV Clearance We are looking to recruit a MOD DV Cleared Senior Software Engineer for a leading technology consultancy delivering complex software engineering, maintenance and modernisation projects... LFWQ1_UKTJ ...

Senior Software Engineer Permanent Location: Portsmouth/Home (on site 3 days a week) Salary: £80,000 - £90,000 (+ benefits) Skills: Python/C++/Legacy Modernisation/Complex Systems, MOD DV Clearance We are looking to recruit a MOD DV Cleared Senior Software Engineer for a leading technology consultancy delivering complex software engineering, maintenance and modernisation projects. This is a hand... WKCL1_UKTJ ...

Greater Manchester area is looking to increase its R&D capability for new and future projects. This company is looking to add a Senior Embedded Software Engineers offering the chance to work on some of the latest and coolest technology in the industry. The role of Senior Embedded Software Engineer reports to the Software Lead on a day-to-day basis working as part of multi-disciplined team. The team consists of hardware, mechanical, software, test and validation engineers. This role is classed as full lifecycle, where youll be involved from specification ...

Senior Java Software Engineer - Java Developer, Python, AWS, MySQL, NoSql, REST APIs, Microservices, Machine Learning, Artificial intelligence (Hybrid - 3 days a week in the office - Notting Hill) Description for the Senior Java Software Engineer role:- You will be joining a fast-growing, research-driven … learning techniques. My client is revolutionising their industry with a track record of building things that others have ruled out as impossible. The Java Software engineer will join a very bright, talented team of engineers with the guidance of technologists who have help build up some ...

Senior Software Engineer Salary: Negotiable plus benefits, pension (7% contribution), 25 days holiday & life insurance We are looking for senior software engineers with a range of levels of experience including designing and delivering software applications. We are a small but rapidly growing consultancy, owned … looking for candidates with a mix of technical expertise and interpersonal skills, able to work independently or in small teams. The Role: As a Software Engineer, you will play a major role in developing code in the Software Modelling and Simulation, autonomy and geospatial fields, along with ...

Senior Software Engineer Join a specialist technology business delivering secure, mission-critical digital solutions that support Defence and National Security operations. This is an opportunity to work on complex engineering challenges, building innovative software that has a genuine impact on critical decision-making and operational success. … professional development support, and additional onsite benefits Industry: Defence Technology/National Security What You’ll Be Doing: Design, develop, and maintain secure, scalable software solutions within highly secure environments. Collaborate with engineers, architects, and delivery teams to solve complex technical challenges. Build modern front-end applications using React ...

Title: Software Engineer Location: South Cambridgeshire, Salary: up to £70,000 This is a rare opportunity for an engineer to join an elite R&D team, where your going to be working on the intersection of software and hardware development, working to develop the technologies … save thousands of lives. If you have an electronics or engineering background and have developed strong software skills along the way, this role was written for you. The Role You will play a key role across the full product lifecycle, developing and maintaining software platforms in C#, Python ...

Senior Software Engineer Salary: Negotiableplus benefits, pension (7% contribution), 25 days holiday & life insurance We are looking for senior software engineers with a range of levels of experience including designing and delivering software applications. We are a small but rapidly growing consultancy, owned ...