Senior Java Software Engineer jobs in Southampton

Software Engineer Document Management & Workflow Systems (Contract) Any additional information you require for this job can be found in the below text Make sure to read thoroughly, then apply. 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...

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...

You will design and deploy robust frontend client, backend services, infrastructure automation, and cloud-native solutions by utilising your software development knowledge and your DevOps proficiency across AWS and GCP.

Senior Software Engineer Location - Southampton, Hampshire Salary - Competitive Security - Due to the nature of this position, you must be eligible to achieve a minimum of SC clearance, be a British Citizen and have resided in the UK for the last 5 years. Overview: Copello are working with a leading defence business who are looking for a skilled Senior Software Engineer to join a dynamic...

You will join a leading defence and national security consultancy, working on software for products in the RF communication and sensors domain.

You will be responsible for the detailed design, implementation and testing of components of the product software, working with an agile team.

You should be comfortable with most of our core technologies:

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:

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 environment, this role...

You will join a cross-functional product engineering team working on the evolution and modernisation of a core SaaS platform. The focus is on building scalable, cloud-native services while improving reliability, performance, and long-term maintainability.

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...

Senior Backend Engineer | Fully Remote UK | £70,000-£75,000 | Python | Django | AWS Location: Fully Remote - Candidates MUST be UK based Salary: £70,000-£75,000 + benefits Tech Stack: - Backend: Python (Django) - Frontend: React - Cloud Systems: AWS, Docker Are you a Senior Backend Engineer who enjoys taking ownership of real production systems and shaping how a platform evolves as it...

Senior Full Stack Engineer Remote (UK) | Full time London office available for optional in person collaboration We’re looking for an experienced Senior Full Stack Engineer to join a small, highly skilled team building a next generation Financial Services Regulatory Compliance platform. This is a hands on role where you’ll work across the stack, leading frontend development with React and...

You will work on challenging, real-world technical problems, from early-stage research through to fully released products, contributing to solutions that operate in demanding and high-assurance environments.

You will be part of a small, highly capable engineering team responsible for designing and delivering secure, high-reliability solutions.

At Engine by Starling, we are on a mission to find and work with leading banks all around the world who have the ambition to build rapid growth businesses, on our technology. Engine is Starling's software-as-a-service (SaaS) business, the technology that was built to power Starling, and two years ago we split out as a separate business. Starling has seen exceptional growth and success, and a...

About Prighter Prighter is a fast-growing LegalTech company building productised services and SaaS solutions for compliance with data protection as well as AI & digital governance regulations. With the mission to enable companies around the world to comply with regulatory requirements for their digital business, our services and SaaS solutions guide our global clients through the increasingly...

Key Responsibilities - Design, implement, and maintain software for nuclear systems, ensuring compliance with safety and regulatory standards. - Develop software for reactor control, monitoring systems, data acquisition, simulation, and predictive analytics. - Collaborate with multidisciplinary teams including nuclear engineers, electrical engineers, and safety specialists. - Apply best...

🚀 About Webigence and Spark Travel Webigence has 25 years of experience crafting UX‑first, often highly complex software. Our engineers pair forward‑thinking agile practices with an obsession for intuitive design, shipping products that feel effortless even when the logic underneath is anything but. Alongside a handful of long‑standing third‑party clients, we’re scaling our own SaaS...

Job Description Software Engineer (all seniorities) Location: Southampton Our client: We are using and creating technology to transform operations at sea to enable people and the planet to thrive. We are open-minded and fearless in our approach to innovation and don’t believe in boundaries. We challenge everything and have massive ambitions to drag ageing industries into the tech era. We...

Join OCI’s Edge Security team as a Principal Engineer to architect and deliver cloud-scale DDoS protection. You’ll lead design for high-performance detection and mitigation systems, drive automation and operational excellence, and set the technical direction for customer-facing DDoS capabilities across OCI’s global edge. This role requires deep expertise in Linux networking data path and...

Due to progression, this role exists to replace a senior engineer within a well-established software company operating in the highly regulated energy sector. Senior Python Software Engineer Circa £56,000 + up to 15% bonus | Hybrid (2 days per month onsite, Southampton) The software you'll work on is business critical. It must be reliable, auditable, and able to stand up to regulatory scrutiny....