Senior Java Software Engineer (Contractor) UK-Based Fully Remote Outside IR35 Contract to Dec 2026 We are supporting a global engineering and technology organisation in the search for a Senior Java Software Engineer (Contractor) to join their Performance Engineering & Research team. This is a fully remote opportunity (UK-based candidates only) working on robust, scalable software that supports sophisticated control algorithms and performance optimisation systems. The Role You will design, build and maintain efficient, high-performance Java applications, contributing across the full software development lifecycle including: Requirements analysis and system design Development and implementation Testing and deployment CI/CD and automation improvements Technical documentation Working under the guidance of the Principal Performance Engineer, you will collaborate with solution design, integration, simulation and delivery teams globally. What We re...

Graduate Software Engineer / Developer Newcastle onsite £33k+ Are you a bright, ambitious technologist with a top class education looking for an opportunity to join a tech start-up? You could be progressing your career at a rapidly growing Fintech that have secure backing and an established Hedge Fund client as a partner, gaining valuable financial trading systems experience. As a Graduate Software Engineer you will collaborate with a small, talented team to deliver the core trading platform within a Microsoft environment using the latest versions of C# .Net to produce high quality code. You'll be problem solving and working on complex, challenging systems with continual learning and self-development opportunities. Location: You'll join colleagues in brand new Central Newcastle offices on a full-time basis (Monday to Friday), working hours with some flexibility. The offices are well equipped and offer fantastic views across the City and the local...

Description 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 large part of that is down to the fact that we have built our own modern technology from the ground up. This SaaS technology platform is now available to banks and financial institutions all around the world, enabling them to benefit from the innovative digital features, and efficient back-office processes that has helped achieve Starling's success. As a company, everyone is expected to roll up their sleeves to help deliver great outcomes for our clients. We are an engineering led company and we're looking for people who are will be excited by the potential for Engine's...

Description 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 large part of that is down to the fact that we have built our own modern technology from the ground up. This SaaS technology platform is now available to banks and financial institutions all around the world, enabling them to benefit from the innovative digital features, and efficient back-office processes that has helped achieve Starling's success. As a company, everyone is expected to roll up their sleeves to help deliver great outcomes for our clients. We are an engineering led company and we're looking for people who are will be excited by the potential for Engine's...

Description 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, and is the technology that was built to power Starling Bank. Engine split out as a separate business in early 2024. Starling Bank has seen exceptional growth and success, and a large part of that is down to the fact that we have built our own modern technology from the ground up. This SaaS technology platform is now available to banks and financial institutions all around the world, enabling them to benefit from the innovative digital features, and efficient back-office processes that has helped achieve Starling's success. Our technologists are at the very heart of Engine and enjoy working in a fast-paced environment that is all about building things, creating new stuff, and disruptive technology that keeps us on the cutting edge...

Description 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 large part of that is down to the fact that we have built our own modern technology from the ground up. This SaaS technology platform is now available to banks and financial institutions all around the world, enabling them to benefit from the innovative digital features, and efficient back-office processes that has helped achieve Starling's success. As a company, everyone is expected to roll up their sleeves to help deliver great outcomes for our clients. We are an engineering led company and we're looking for people who are will be excited by the potential for Engine's...

Senior Software Engineer (TypeScript Full Stack) London / WFH to £100k Do you enjoy problem solving and working with a range of technologies including functional programming languages such as Elixir, using the right tool for the job? You could be progressing your career in a senior, hands-on Software Engineer role at a successful and profitable energy trading market data scale-up. What's in it for you: Competitive salary, to £100k + Significant Equity Hybrid working (3 days London office per week) Vitality Healthcare Continuous career development and learning opportunities Influential role as part of a small, close knit team Complex and interesting work Your role: As a Senior Software Engineer you will take ownership, working on technically challenging Greenfield development projects. You'll be working on complex problems with scalability and reliability in mind, across the full development lifecycle from architecture...

Description 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 Bank, and a year ago we split out as a separate business. Starling has seen exceptional growth and success, and a large part of that is down to the fact that we have built our own modern technology from the ground up. The Engine technology platform is now available to banks and financial institutions all around the world, enabling them to benefit from the innovative digital features, and efficient back-office processes that has helped achieve Starling's success. Our technologists are at the very heart of Engine and enjoy working in a fast-paced environment that is all about building things, creating new stuff, and disruptive technology that keeps us on the cutting edge of fintech. We...

Pexip has an engineering-centric culture with an uncompromising focus on software quality; we use CI and test automation and have a quality assurance ethos that we are immensely proud of! Pexip is seeking a talented Full Stack Software Engineer to join our Engineering organization. As a member of our team, you will be working alongside engineers based in both the UK and Norway and sharing responsibility for the continuous development and improvement of our Pexip Secure Meetings offerings, including Pexip Secure Meetings for Justice. The work location for this role is our office in Reading, UK working alongside other team members in that location. We would also consider candidates who could work from our office in Oslo, Norway. This is not a remote role, although there is some flexibility to work from home when it is needed. You must have the right to work in either the UK or Norway; Pexip will sadly not be able to sponsor work visas or relocation for this role. Role and...

We are seeking Application Development Lead for P&R team’s Payments Product Processor development team. The successful candidate will interact with the key stakeholders from product, operations and other teams for handling of application activities & new projects. The candidate will also interact with development Project Manager, the development, testing, and production support teams, as well as other departments within Citigroup (such as the System Administrators, Database Administrators, Data Centre Operations, and Change Control groups) for TTS platforms. The candidate should be well versed with GPPSP payments product with strong expertise on product technical, deployment & functional behavior. Responsibilities: Custom develops, customizes, and integrates solutions for a complete platform meeting business needs Implements GPPSP product globally, providing robust hardware and software solutions Designs, codes, tests, documents, and implements application...

Scientific Software Engineer C++ Python Linux Oxfordshire Hybrid £70,000pa - £75,000pa plus benefits: Do you enjoy technically leading and mentoring Software Engineers utilising C++ & Python on Linux, passing on your knowledge and experience to help nurture and develop future Engineers? If so, this Lead Software Engineer role will be perfect for you. Our client is at the forefront of scientific research industry developing instrumentation and tools to aid ground-breaking science. They now seek a highly dynamic Lead Software Engineer who thrives in a fast-paced, evolving environments and can seamlessly adapt to changing priorities. The ideal candidate will not only bring technical expertise and architectural vision but also excel in collaboration and stakeholder engagement. Exceptional interpersonal skills are essential, as this role involves working closely with cross-functional teams, mentoring engineers, and effectively communicating complex concepts to...

Description As a Senior Embedded and Control Software Engineer, you will be responsible for designing, developing, and deploying code for AB Dynamics automotive test equipment, ranging from track testing solutions (driving robot and Advanced Driver Assistance Systems (ADAS) target products) to laboratory-based testing equipment (SPMM, ANVH, SSTM). You will play a critical role in ensuring the successful delivery of high-quality products that meet customer requirements and industry standards. Collaboration with cross-functional teams to ensure the seamless integration of software into our products. This role offers an exciting opportunity to work with leading automotive clients worldwide. Core Responsibilities Real Time and Embedded Software Development with a focus on real time control software. Define, design and implement software architectures and robotics control systems, ensuring high performance in real-time environments. Define and implement...

Role As a Senior Engineer you will be responsible for establishing and implementing new or revised application systems and programs in coordination with the Technology team. The overall objective of this role is to lead applications systems analysis and programming activities   About the Department Developer Engineering & Engineering Excellence Tech is a function within CTO, responsible for measuring and supporting Engineers across Citi. Our mission is to make it easy and enjoyable for software engineering teams to go from a business idea to delivering an innovative product solution. The main goals are to improve and upgrade our tools, streamline our processes, automate and strengthen our controls, and help development teams adopt modern working methods. We are an expert team to transform the working environment of the 60,000 people who make up the Citi engineering community and help them dramatically change their approach to developing software across the many...

Gaming: Welcome to the world of land-based gaming. At Light & Wonder, it’s all about the games, and our Gaming team builds cutting-edge technology, products, and content for the most iconic casinos and operators across the globe. Position Summary As a Senior Software Engineer, you will be a key contributor to the development of our next-generation cross-platform core game framework, used to power hundreds of games across online, mobile and desktop platforms. You will focus on creating robust, maintainable solutions whilst working collaboratively with a highly skilled team of developers. We're looking for people who are full of ideas, want to challenge the norm and work to our core values…  Dare to be Bold  - We always bring courage to work to reach for the unbelievable.  Uphold Integrity  - We promote accountability and respect to raise the bar for ourselves and the industry.  Never Settle  - We relentlessly push forward to create the extraordinary...

Discover your future at Citi Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact. Job Overview Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech....

Discover your future at Citi Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact. Job Overview Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech....

The Opportunity This is your chance to build the foundational systems for 'Citi Assist', a Generative AI assistant that will reach every Citi employee globally. You'll join us on the ground floor, becoming a core builder on a high-visibility platform that sets the standard for how a global bank adopts this technology safely and at scale. As a polyglot engineer, you'll work across the full stack. That means crafting intuitive user interfaces one day and building robust backend APIs the next. You'll be equally excited about both. What You'll Do Build and deliver across the stack. This is a hands-on role where you'll write high-quality, tested code and move features from idea to production. Sometimes that's a user-facing component. Sometimes it's a backend API. Often it's both. Own your features end to end. You'll take responsibility from the UI to the database. That means figuring out the path forward, asking the right questions, and driving your work to completion...

The Opportunity This is your chance to build the foundational systems for 'Citi Assist', a Generative AI assistant that will reach every Citi employee globally. You'll join us on the ground floor, becoming a core builder on a high-visibility platform that sets the standard for how a global bank adopts this technology safely and at scale. Here's what makes this role unique: we know that data is the key to building a successful, safe, and scalable generative AI assistant. The difference between a good AI product and a great one isn't just the model—it's the testing, evaluation, and feedback loops that make it better every day. As a data-focused full-stack engineer, you'll help us craft the tools and systems that let us understand how Assist is performing, where it's succeeding, and where it needs to improve. You'll work across the stack, building everything from intuitive dashboards that surface insights to robust backend pipelines that process evaluation data at scale....

Location: Crawley, United Kingdom Thales people architect solutions at the heart of the defence-security continuum. Interoperable and secure information and telecommunications systems for defence, security, and civil operators, are based upon innovative use of radiocommunications, networks, and cybersecurity. We are ground breaking new digital technologies such as 4G mobile communications, cryptography, cloud computing and big data for use in physical protection systems, and critical information systems. Together we offer fantastic opportunities for committed employees to learn and develop their career with us. At Thales UK, we research, develop, and supply technology and services that impact the lives of millions of people each day to make life better, and keep us safer. We innovate across the major industries of Aerospace, Defence, Security and Space. Your health and well-being matters to us and that’s why we offer you the flexibility to do what’s important to you; whether...

Are you in your penultimate year of study and looking to work in a fast paced, global, market leading company for your industrial placement? Here at Innovative Technology, we have an excellent opportunity for a Software Engineer/ Computer Scientist (Applied Sciences) intern to join our talented team in our global head office in Oldham, Greater Manchester for 12 months starting in Summer 2026. The role Overview: As a Software Engineer Intern working in the Applied Sciences Group, you ll work closely with our experienced team of Software Engineers, Physicists and Data Scientists to support the deployment of cutting edge algorithms within ITL s hardware platforms. Here at ITL, we offer Real-world experience working on impactful projects. Guidance and mentorship from experienced professionals. Networking opportunities within the technology industry. A collaborative and dynamic work environment. Potential for a full-time role upon successful completion of the...