senior mainframe developer jobs in Slough

Paladign/Mainframe Developer Duration: initial 1 year contract Workload: Full time hours Setup: Contractor inside IR35 Location: Hybrid – 3 days/week onsite, 2 days remote We’re urgently seeking a seasoned Paladign/Mainframe Developer to support and enhance a core wealth management system used by our client in the financial services sector. Key Responsibilities: - Analyse business...

We are working with a leading global insurer to find them a Senior Actuarial Analyst to join their Model Development team within the Global Actuarial function. This role suits someone who enjoys combining actuarial thinking with technical problem-solving - developing and maintaining pricing and analytical models, working with large data sets, and improving model infrastructure and...

Our leading Banking client are looking for a talented Senior Kotlin Developer to join a small highly skilled team tasked with developing a modern trading application to replace an existing Legacy system. You'll design, develop, and implement a scalable trading application to replace the Legacy system. You'll collaborate with team members to architect and deliver high-performance Back End...

A leading UK-based firm is seeking a proactive and commercially minded Senior Business Development Executive to join its dynamic and forward-thinking Business Development and Marketing Operations team. This is a fantastic opportunity to contribute to the strategic growth of one of the UK’s largest and most respected Real Estate divisions. Working closely with the Real Estate Business Development...

We’re working with a leading global insurer seeking an experienced Lead Development Specialist to join their technology team. This role is ideal for a senior developer who thrives on building modern insurance technology solutions and providing hands-on technical leadership. As a Lead Development Specialist, you’ll be instrumental in designing, developing, and supporting core applications used...

Leading Development/Housebuilder Team - Central London Senior Associate/Legal Director (5 years pqe +) Top 40 UK Law Firm We are currently arranging interviews at this firm - this is a fantastic opportunity for a bright, ambitious and committed Real Estate lawyer to join one of the country's most impressive and leading housebuilder & development teams. Work is big ticket, acting for regional &...

You will lead end-to-end deal processes, collaborate with internal and external stakeholders, support the strategic development of new business opportunities, and contribute to the creation of long-term partnerships.

Senior Software Developer - Java / Python with Delphi We’re looking for an experienced Software Engineer (Java/Python) to join a high-profile government project focused on modernising and integrating complex systems within a secure environment. You’ll work across backend development, integration and automation – with occasional support for legacy Delphi components as part of wider platform...

We're looking for a Senior Android Developer to join an innovative tech company that delivers cutting-edge solutions to regulated industries such as Finance and Healthcare. In this role, you will take ownership of developing Enterprise-level Android applications to enhance user experiences and support delivery of high-quality products. Role: Senior Android Developer Location: London, UK Total...

Senior Java Developer | Low Latency | London Our client is a specialist engineering consultancy known for solving some of the most demanding performance challenges across financial markets and technology. Their teams design, build, and optimise high-throughput, low-latency systems used by global institutions where reliability and speed are critical. They are now looking for exceptional Java...

Senior React Native Developer - Outside of IR-35 A leading Digital Agency/ Consultancy in London is on the search for a React Native Freelancer to join the team on a 6 month interim, this is 100% Remote. Rate - Up to £500 per day (Outside of IR-35) 100% Remote Please do apply, if you are available within the next 2 weeks. Senior React Native Developer - Outside of IR-35

HCLTech is a global technology company, home to 219,000+ people across 54 countries, delivering industry-leading capabilities centered on digital, engineering and cloud, powered by a broad portfolio of technology services and products. We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and...

Role: - Power Platform Senior Developer Job Summary – Design, develop Power Automate workflows including the creation of triggers, actions, conditions, and loops to automate business processes. Create and configure connectors and integrations between various systems and applications to enable data flow and automation. Power Shell scripting is preferred as well. Also, we should have experience...

Senior Software Developer required by a successful software company with an international client base. The Senior Software Developer will be responsible for full stack development with C# and React as part of the ongoing evolution of the company's core SaaS product as they evolve a traditional monolith architecture towards a modular monolith. Key experience - Extensive C# experience - SQL...

You will provide professional consulting services working onsite for start-ups, medium and large sized companies.

You will be working on large complex projects so you should be comfortable dealing with demanding stakeholders and providing time driven results. Innovation, Collaboration and Passion are the three core values that we look for in all our personnel.

Senior Full Stack Developer Contract type: Full time, permanent Salary: £DOE Reports to: Head of Product Engineering Direct reports: Yes (initially none, growing over time) Location: Remote-first with occasional travel to client sites or team meet-ups (typically quarterly) The successful candidate must hold British Citizenship, due to the requirement for Security Clearance. About...

Allerton Bishop Search is searching for an experienced Senior Project Manager to join a global pharmaceutical company to commercialise and launch drug products. This is a high-impact opportunity to lead complex development and launch projects for drugs in various dosage forms while owning relationships with leading CMOs, CDMOs, and CROs across the UK and Europe. ROLE RESPONSIBILITIES: As Senior...

Senior Power Platform Developer Power Apps, Power Pages, Power Automate, Azure DevOps £500-550 per day, Outside IR35 Initially 4 Months (very likely extensions) Fully Remote (Must be UK based) One of our favorite Consulting partners urgently requires the services of a Senior Power Platform Developer to join a project team, delivering a high profile NHS project. Key Responsibilities: -...

Job title: Senior Business Development Manager Location: London Paddington (hybrid working available) Grade and salary: £40,000–£45,000 per year plus performance-based commission Hours: Full-time Contract type: Fixed-term for 2 years, with potential for permanent extension Reporting to: CEO and Managing Director of OxValue.AI Starting date: January 2026 or as soon as possible How to...

⭐ **Senior Full Stack Developer with UI bias- making the world a better place! I'm working with a global software house making the world a better place! . This isn't just another dev role - it's a chance to impact real-world justice through technology. 🚀 **Why Join?** • **Technical modernization project** - leading the migration from legacy MVC to React architecture • **Newly created role** -...