Senior Backend Software Engineer - Cloud-Native Platform Up to 85,000 Hybrid (Nottinghamshire HQ) 3 days a week in their East Midlands Head Office (not negotiable) I'm delighted to be once again recruiting on behalf of my technology-led client that's building a modern, cloud-native platform from the ground up. They're looking for a Senior Backend Software Engineer to join a high-performing team focused on delivering scalable, secure, and high-quality services using the latest tools and engineering practices. This is a hands-on role for someone who enjoys solving complex problems, working in a microservices environment, and contributing to architectural decisions. The team values clean code, automation, and continuous improvement-and they're looking for someone who shares that mindset. Key responsibilities as the Senior Back-End Software Engineer are: Design and develop backend services using Node.js and TypeScript , deployed in a cloud-native environment. Build...

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....

We’re looking for multiple talented engineers Server Side , to join one of our high-impact teams inside Citi’s CTO organisation . You’ll sit within Devel oper Enablement , a group focused on innovation, developer platforms and internal tools used across the bank, where we experiment and ship fast, like a startup inside a global bank. Our mission is to save our engineers tens of minutes per day, equating to £10,000,000s of savings at Citi’s scale.       Opportunities in CTO   There are many exciting opportunities for you , and flexibility to move between multiple projects if that’s something you’d enjoy.     SDLC Automation is a greenfield project that builds on the success we’ve had in automating the SDLC and takes it further . Th is blue-sky project looks at ways we can greatly improve the SDLC process at Citi, taking ideas like grad ing engineering teams and...

Full-Stack Engineer (FX Trading Applications) Location: London (onsite 3 days per week) Day Rate: £700 (via Umbrella Company) Contract: Fixed Term Contract until 31 December 2026 About the Role Are you ready to dive into the dynamic world of FX Trading technology? Our client is seeking a talented Full-Stack Engineer with strong Java expertise and a passion for solving complex technical challenges. You'll play a key role in building mission-critical components that power high-performance trading systems-working closely with cross-functional teams in a fast-paced, agile environment. Key Responsibilities Engineering & Development Design and develop backend and frontend features for FX Trading applications. Write well-designed, testable, and efficient code across the full stack. Build automated test suites (unit, integration, contract, UI/API, performance). Define metrics and implement automated evaluation and drift detection for AI-related components. Reduce...

Overview Expleo is a trusted partner for end-to-end, integrated engineering, quality services and management consulting for digital transformation. We help businesses harness unrelenting technological change to successfully deliver innovations that will help them gain a competitive advantage and improve the everyday lives of people around the globe. We are seeking a engineer to support the troubleshooting of GUI frontend and database backend of custom software projects involving SQL, Excel, command line / PowerShell scripting and testing. Responsibilities Extract and manipulate data from the system database using a combination of bespoke data extraction tools, SQL queries, and Microsoft Excel Liaise with internal and external stakeholders to identify data issues and perform general troubleshooting Correct erroneous data within the system either through SQL scripts Peer review data correction SQL scripts Input data on behalf of customers Create assets...

TransUnion's Job Applicant Privacy Notice What We'll Bring: We Are TransUnion: TransUnion is a major credit reference agency, and we offer specialist services in fraud, identity and risk management, automated decisioning and demographics. We support organisations across a variety of sectors including finance, retail, telecommunications, utilities, gaming, government and insurance. What You'll Bring: We're looking for a Software Developer to join our growing Integrations and Decisioning team. Day to Day You'll Be: Design and build reliable backend systems and infrastructure tooling Use TDD to write high-quality, maintainable code and build out automated test suites Own reliability, observability, and performance of key services Collaborate with clients to understand requirements, debug issues, and propose solutions Drive improvements to system architecture, automation, and deployment processes Mentor junior developers and contribute to a strong engineering culture...

C# .NET Software Developer An exciting opportunity for a skilled developer to design, build and maintain bespoke software solutions within a modern DevOps environment, supporting scalable systems and cloud-based platforms across a growing organisation. If you’ve also worked in the following roles, we’d also like to hear from you: C# .NET Developer, Backend Developer, Software Engineer, DevOps Engineer   SALARY: up to £70,000 per annum (depending on experience) + Benefits LOCATION: Remote and Hybrid Working Options Available. You can either work remotely of if you prefer Hybrid working from home and the office in Altrincham, Greater Manchester, North West England JOB TYPE: Full-Time, Permanent   JOB OVERVIEW We have a fantastic new job opportunity for a C# .NET Software Developer to join a forward-thinking Technology team focused on building reliable, secure and scalable systems. This role plays a key part in...

Senior Front-End Developer (React, TypeScript) - VP, FX Options Pricing 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 We are seeking a highly skilled and motivated Senior Front-End Developer to join a critical greenfield program focused on transforming our electronic FX Options Trading business. This is a multi-year,...