Freelance Software Developer jobs in Portsmouth

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 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.

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.

A leading software solutions company in the UK seeks a Head of Software Services to manage software project P & L, inspire teams, and develop stakeholder partnerships. This hybrid role involves client relationship management and overseeing project delivery to ensure excellence in software services. Experience in software engineering and proven leadership skills are crucial for success in this...

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...

Job Title: Associate Software Developer Location: Portsmouth (HM Naval Base) Service Area: Information Management and Technology Department Hours of Work: 37 Per week Salary: £31,000 – £35,000 What You’ll be doing as the Associate Software Developer: You’ll join our Digital Solutions team, and be part of an Agile team, learning to build web applications and APIs whilst receiving mentorship...

Director of Software Development An exciting new opportunity with a high-growth B2B SaaS business scaling a complex, customer-facing platform used at significant volume. With continued investment in engineering, tooling, and leadership, they're looking for a Director of Software Development to help evolve and scale their engineering organisation. This role suits someone who came up through...

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 EngineerMarine Defence applicationsPortsmouthPermanentRole OverviewWe are looking for a talented software engineer to help shape the...

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.

You will work primarily in C++ using modern tools and open source frameworks, contributing to innovative software for advanced navigation and important systems. Key Responsibilities:Capture and evaluate technical requirements, estimating delivery timescales and milestones. Design, implement, and maintain software across back end, communication infrastructure, and client-server applications.

- 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...

Job Title: SpLD Study Skills Tutor Location: Portsmouth Salary: £36.48 per hour Job Type: Freelance Working at: University of Portsmouth. About us: We are a national Non-Medical Help Provider supporting university students who are in receipt of DSA (Disabled Student Allowances). We believe in fighting inequality by helping people develop and learn. Education is a valuable life experience...

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.

Head of Software ServicesSalary: from £90,000 plus benefits, (pension (7% contribution), 25 days holiday & life insurance)Location: Hybrid, PortsmouthWe are looking for a Head of Software Services to join our Digital business. We provide, through Sirius Digital, bespoke, robust and high-performance software to meet and exceed user requirements. We specialise in Software Engineering, Modelling &...

- Salary: £40,000-£55,000 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 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.

Director of Software DevelopmentAn exciting new opportunity with a high-growth B2 B Saa S business scaling a complex, customer-facing platform used at significant volume. With continued investment in engineering, tooling, and leadership, they're looking for a Director of Software Development to help evolve and scale their engineering organisation.This role suits someone who came up through...

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.

A leading technology company in the UK is seeking a Director of Software Development to guide their engineering organisation towards growth. This role requires a blend of strong technical knowledge and leadership, managing a diverse team of Software Development Managers and engineers. The position emphasizes modern Dev Ops practices and the ability to influence technology strategy. The company...

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.