Java Software Engineer jobs in Southampton

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...

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...

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...

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...

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...

SOFTWARE ENGINEER REMOTE (OPTION TO RELLOCATE) £110K + EQUITY THE COMPANY This innovative AI startup is redefining safety and reliability in AI models. While competitors like GPT and DeepMind struggle with hallucinations and illegal content generation, this company adds safety control layers to ensure AI outputs are trustworthy and compliant. Working with high-profile, they’re building AI...

You should be comfortable with most of our core technologies:

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...

You will design and build APIs that enable products, partners and AI services to work together, including: Building RESTful APIs using C# .

You will likely bring: Strong experience building backend services in C# .

Java Backend Engineer (Contract) 6 months Fully remote (EU) Rate: 250–300 EUR/day We are looking for an experienced Java Backend Engineer to join a cross-functional delivery team building a modern data integration layer for a healthcare technology platform. The team is responsible for designing and scaling a GraphQL API layer that connects multiple product domains and unlocks new data...

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...

Software Engineer Are you a Software Engineer who loves tackling complex technical challenges, pushing boundaries, and building products that make a real impact? We are working with a marketing leading company in the development of subsea products and systems used across the Energy, Science, Offshore and Defence sectors. They are looking for a Software Engineer to join their high‑performing...

Software Engineer – £65,000–£85,000 + Equity – Remote (UK) - London office if preferred The Opportunity 💻 Join a fast-growing, AI-native software company building workflow automation tools used daily by thousands of professionals across people-heavy industries. The platform removes manual, repetitive work through AI, automation and thoughtful product design, helping teams move faster and focus...

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....

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

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:

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...