Freelance Software Engineer jobs in Hampshire

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.

C++ Software Engineer Portsdown West (PO17) Full-time Onsite - Salary £50,000 - £65,000 - 25 days annual leave inclusive of up to 3 days Christmas shut-down - Buy or sell up to 5 days annual leave - Annual Wellbeing allowance - Two pension schemes to choose from - Private Medical Insurance + discounts for additional family members - Life Assurance scheme up to 4 x salary - Share Save scheme -...

Cyber Software Vulnerability Engineer Package - £45,000 - £65,000 (depending in experience level) Benefits - DV Bonus plus excellent benefits Clearance - Clearable to eDV level, SC clearance required to start. Location - Hampshire, Surrey or London - hybrid working Join a trusted leader in National Security technology solutions. Do you enjoy solving technical cyber problems and identifying...

Job Description Our client, a leader in the defence and security sector, is currently seeking a Senior Software Engineer with advanced security clearance to join their cutting-edge team. This permanent role offers an exciting opportunity to work on innovative solutions that redefine defence technology. Key Responsibilities: - Design, implement and test solutions to complex customer problems...

Job Description Job Title: Logistics Software Engineer Location: Havant – 1 day a week onsite Salary: Up to £60,000 Contract Type: Fixed Term – 12 Months Join Our Team as a Logistics Software Engineer and Drive Software Engineering to New Heights! Are you a meticulous Software Engineer with a passion for precision and excellence? Are you ready to play a pivotal role in ensuring top-tier...

Job Description About the Role: Join our innovative engineering team and play a key role in developing advanced control systems for next-generation vehicles. This position offers the opportunity to work on complex software solutions that integrate control theory, real-world testing, and cutting-edge technology. If you thrive on solving technical challenges and collaborating in a dynamic...

Junior Software Engineer (RTOS) £50,000 - £55,000 + Progression + Training + 36.5 Hours a week + 33 Days Holiday + Flexitime + Hybrid + Company Benefits + Early Finish on Fridays + R&D Fordingbridge Are you a Software Engineer with RTOS experience looking for a truly R&D focused role, within a company known for the flexibility and progression? Do you want to work with a highly skilled team of...

Senior Embedded Software Engineer Location : Basingstoke (On-site 2 days per week) Salary Up to £75,000 (depending on experience) We're looking for a Senior Embedded Software Engineer to join a growing, multi-disciplinary engineering team in Basingstoke. You'll be working alongside Software, Electronic, and Mechanical Engineers, contributing to the design and development of robust, high-quality...

Software Engineer Document Management & Workflow Systems (Contract) Details - Initial 6-month contract with extension - Fully remote (EU time zones) - Start: End of February / early March - Outside IR35 We are looking for an experienced Software Engineer contractor to support a regulated banking client on their Document Management & Workflow platforms . This role is heavily focused on the...

You will contribute to projects spanning embedded devices, user equipment, servers, and cloud environments, collaborating closely with multidisciplinary teams and end clients. Key responsibilities include: - Reverse engineering and analysis of complex software and firmware - Designing and developing secure, resilient software solutions

Software Engineer Fully Remote | Permanent | Competitive Salary + Benefits Harrington Starr has partnered with a leading Global Payments Technology company who are seeking to hire a Software Engineer to join their growing engineering team. This is an exciting opportunity to work on scalable, resilient systems while contributing to real-world solutions in the financial technology space. Key...

Role Overview We are seeking a Java Software Engineer to join a small, technically rigorous founding team building complex, data-intensive engineering systems. The role is remote-first, with periodic in-person collaboration in Oxford or San Francisco. The position involves close collaboration with the Founding Engineer on backend infrastructure, internal platforms, and system architecture. In...

About the Job This position is for a Senior Software Engineer with a minimum of 5 years of experience in backend development and a passion for building robust, scalable systems. We are looking for an engineer with a strong background in the C# .NET ecosystem, and a preference for candidates with significant experience on AWS. Are you ready for a challenge? We’re looking for a dynamic software...

IT/Software Support Engineer Hampshire based company; commutable from Southampton, Fareham, Winchester Salary DOE - Up to £30k Are you a tech enthusiast with a passion for ERP software and a desire to grow professionally? Join our client as a Software Support Analyst / Application Support Analyst and embark on a rewarding career. This role is due to organic growth, the company specialise in ERP...

Senior Software Engineer - Cyber Location: Onsite, Hampshire. Employment Type: Permanent Salary: Competitive salary commensurate with experience, plus benefits. Security: Candidates must be eligible to obtain DV clearance due to the nature of the work. Our client is seeking a highly skilled Senior/Principal Software Engineer to join a leading organisation specialising in advanced...

You will also contribute to quality assurance and testing efforts, as well as participate in small-scale software development tasks. Key Responsibilities:

Job Description Job Title: Software Development Engineer Salary: Up to £75k Job Type: Full Time, Permanent Location: Fareham, Hampshire (Hybrid working available) About the Opportunity: A UK-based technology organisation in Fareham is seeking a Software Development Engineer to support the development of software used within government, defence and law-enforcement environments. This role...

We're looking for an experienced Embedded Software Engineer to join a high-performing product design team developing complex embedded control and sensing systems. This role offers the opportunity to take ownership of full project lifecycles from requirements capture and concept development to implementation, verification and on-site integration. You'll work closely with electronics, systems and...

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.

Principal Software Engineer Fully Remote | Permanent | Competitive Salary + Benefits Harrington Starr has partnered with a leading Global Payments Technology company who are seeking to hire a Principal Software Engineer to join their senior engineering leadership team. This is a rare opportunity to combine hands-on development with strategic influence, guiding architecture decisions and shaping...