Senior Software Development Engineer jobs in Portsmouth

You will work alongside experienced engineers, data scientists and subject matter experts on programmes covering modelling and simulation, autonomous systems, synthetic environments and digital twins.

You will stay close to the code while contributing ideas, shaping solutions and engaging directly with customers.

You will be designing solutions for complex challenges that will meet and exceed user requirements. Responsibilities will include: - Designing, developing and delivering software solutions using a large range of techniques, including Wargames, Modelling and Simulation, Robotic and Autonomous systems, Digital Twins and Synthetic Environments.

Software Developer (Java) - SC Clearance Contract Length: 12 Months (Extension Possible) Location: Portsmouth (Hybrid - 3 days per week onsite) About the Role & Organisation: This organisation operates at the forefront of advanced engineering and technology, delivering complex, mission-critical systems within highly regulated environments. It offers a collaborative, quality-driven culture where...

Our client is a global leader in ship navigation systems and advanced maritime solutions, delivering tailored technologies for commercial vessels, mega yachts, refit projects, naval surface combatants, small combatants, and submarines. Our client is seeking Software Engineers at various levels of experience to join their small UK-based software development team. This is an excellent opportunity...

Software Engineer (Java) SC Clearance Required Certain Advantage are hiring for a Software Engineer based in Portsmouth. This role is on an initial 12-month contract and is required to be onsite 3 days a week. Your responsibilities: - Contribute across the full software development lifecycle, including design, development, testing, and deployment. - Design software solutions using UML/SysML...

You will steer the development of complex digital twins and autonomous systems, bridging the gap between mathematical theory and real-world engineering. Technical Authority: Lead the design of UE5 based simulations, Robotic systems, and Digital Twins. Team Leadership: Line-manage engineering staff and lead small, agile delivery teams.

Software Engineering ManagerWorthing, West Sussex – HybridFull time, PermanentUpto £76,000 per year plus various company benefitsWe are seeking a highly skilled and experienced Software Engineering Manager to lead our dynamic team of 20 Software Engineers!The 20 Engineers? Externally, they are a team that pride themselves on being flexible whilst managing the workload without compromising on...

Do you want to work in Defence and on the latest technologies? Are you keen to join a leader in their field and make a difference? Come and work on some very secure accounts. Were growing our team of Platform Engineering Senior DevOps Engineers to support a very large piece of work. Youll be responsible for all aspects of our automation capabilities and should have strong problem-solving skills...

You will provide senior-level technical input across the full project lifecycle, from asset inspections and condition assessments, through feasibility, design, and construction, to supervision of works and approval of as-built records. The role also includes mentoring junior engineers and contributing to the continuous improvement of asset management processes.

You will bring proven experience of leading major software engineering programmes, ideally within the defence sector.

You should demonstrate strong commercial judgement, exceptional relationship-building skills, and the ability to inspire and motivate senior stakeholders and diverse teams alike.

Senior/Lead Software Engineer – Fully Remote (UK) A global B2B SaaS technology business is building out its European engineering hub and is hiring multiple Senior / Lead Software Engineers (JavaScript) to develop and enhance a mission-critical platform used internationally. These are hands-on individual contributor role with strong ownership — ideal for engineers who enjoy building high-quality...

Aveni is redefining how financial institutions use AI. We build real, production-ready agentic systems that reshape how banks, advisers and financial services firms operate, replacing fragmented processes with intelligent, end-to-end workflows. We have been recognised as Fintech of the Year for two consecutive years and awarded Best Specialist Technology Service at the Professional Adviser Awards...

You will be designing solutions for complex challenges that will meet and exceed user requirements. Responsibilities will include: Designing, developing and delivering software solutions using a large range of techniques, including Wargames, Modelling and Simulation, Robotic and Autonomous systems, Digital Twins and Synthetic Environments.

Our client is a rapidly growing business designing some of the most innovative and interesting applications for the marine industry. If you are a meticulous individual with a passion for working on cutting edge projects, this could be ideal for you. Senior Software Engineer Marine Defence applicationsPortsmouthPermanent Role Overview We are looking for a talented software engineer to help shape...

- Salary: Circa. £70,000 DOE - Full Time - Permanent Who we are: SubSea Craft is a fast growing, privately-funded, UK-based innovative maritime technology company specialising in next-generation, high-performance watercraft and systems. We operate at the intersection of advanced engineering, cutting-edge design, and user-centric innovation, delivering safe, effective, and enabling solutions for...

You will be working closely with the Machine Learning team; however, you are not required or expected to have background in Machine Learning. This is an applied role, and we are looking to hire a software engineer with experience in cloud computing and distributed systems. In this role, you will:

Job Description 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 by four highly experienced and recognised practitioners in UK...

You will work closely with subject matter experts and senior stakeholders on high-impact programmes spanning modelling and simulation, autonomy, geospatial systems, synthetic environments and digital twins.

You will remain deeply technical while setting direction, leading teams and acting as the technical authority across projects.

You will work independently or as part of small teams, helping Sirius Digital grow while advancing your own expertise. We offer a competitive benefits package and clear opportunities for rapid career progression. Key Responsibilities: - Deliver technical consultancy projects to a high standard

You will lead on shaping strategic client relationships and work within Heads of Capability across the group to manage the pipeline and enhance service offerings to meet market needs

You will bring proven experience of leading major software engineering programmes, ideally within the defence sector.