senior mainframe developer jobs in Cardiff

You will be contracted to the NRW office in Bangor and a suitable hybrid working pattern will be agreed on appointment. Any regular face to face meetings or training will be planned in advance. Interviews will take place through Microsoft Teams between 3 - 10 December 2025 Successful applicants will be subject to a satisfactory Disclosure and Barring Service Check (DBS) check.

IntaPeople are working with a disruptive financial services organisation who have been recognised as having one of the most exciting upcoming products in Europe. We are currently looking for a Senior Software Engineer who has a strong focus on the front-end. You’ll be working closely with a team of Software Engineers and Product Managers to build and maintain modern web applications for their...

Senior Python Developer - Python, Flask, SQL, AWS OB have partnered with a FinTech company, who are looking to bring on a Senior Python Developer to their highly skilled engineering team, where you'll have the opportunity to work closely with the CTO & Head of Engineering to have an impact from day one, and develop their systems. In this role, you'll design highly complex systems and...

Senior Sitecore Developer Remote (UK based) £60,000-£80,000 This is an opportunity to join a major international consultancy and be a key part of their Sitecore team. They are the go-to business in their sector and operate across the globe with some incredible clients. They need an experienced Sitecore developer with exstensive consultancy/agency experience to slot into their team and get...

You will play a pivotal role in shaping our growth trajectory by identifying new business opportunities, cultivating strategic partnerships, and delivering tailored solutions that meet client needs.

You should be able to manage multiple priorities, generate leads, and maintain high levels of activity to meet targets.

You will naturally be hungry to win.

You will have a proven background in winning and securing new contracts and will be able to manage a process from initiation to close.

You will be used to managing and engaging with multiple stakeholders and showcasing compelling value propositions.

Senior Vice President of Business Development : BioA Contract Research An innovative and specialised Contract Research Organisation (CRO) is seeking a visionary and commercially astute leader to drive its global business development strategy. This executive role will oversee all commercial operations, set strategic direction, and foster high-level partnerships to accelerate growth. The position...

You will be at the forefront of their commercial strategy, from initial client engagement to closing deals. Why You Should Apply for the Business Development Manager Position:

You will directly influence the company's success by building strong client relationships and securing new contracts.

Senior Java EFX Platform Developer Location: Fully Remote (UK-based) Contract: 12 Months (likely extension) Industry: Investment Banking / FX E-Trading The Opportunity We're partnering with a leading investment bank on a major greenfield build - a brand-new, in-house FX E-Trading platform. This multi-year programme is at an early stage, offering the chance to help shape architecture,...

You will shape how our engineers build, test, release, and monitor software, ensuring frictionless workflows while keeping ownership of business logic, test quality, and development practices firmly with the product engineering teams.

You will be responsible for building scalable, high-performance Back End systems that power their banking platform.

Senior Full-Stack Web Developer | Legal EdTech | Remote Join a leading EdTech provider delivering innovative online learning as they embark on a major transformation. As a Senior Full-Stack Web Developer, you’ll design, build, and modernise scalable web applications that power our learning management systems. You’ll work across ASP.NET Core, React, C#, JavaScript, and Azure. What you’ll do: -...

Senior Backend Developer Location: London - 1x a month Salary: Up to £95,000 (D.O.E) + benefits Fruition Group working with a leading Insurtech unicorn on a mission to transform the insurance industry. Their products have already generated millions in revenue, and now they're investing heavily in new innovations that will shape the sector for years to come. This is an exciting opportunity for...

Senior D365 CE Developer Home-based in the UK (no sponsorship can be offered) Must be eligible for SC Clearance Dynamics 365, Power Platform, CE/CRM, Javascript, AI This role is an opportunity join a leading Microsoft Solutions Partner specialising in D365, Digital Transformation, Power Platform, Azure, and AI. They are looking for a Dynamics 365 CE Developer to design, develop, and deliver...

We are looking to speak with high performing Senior Sales Development Representatives for our client, a growing SaaS company. If you are looking to take the next step in your career and have Enterprise SDR experience, please apply. Key Responsibilities: - Execute highly personalised, multi-channel outbound campaigns to generate qualified meetings for the Enterprise Account Executive team. -...

About Apexon: Apexon brings together distinct core competencies – in AI, analytics, app development, cloud, commerce, CX, data, DevOps, IoT, mobile, quality engineering and UX, and our deep expertise in BFSI, healthcare, and life sciences – to help businesses capitalize on the unlimited opportunities digital offers. Our reputation is built on a comprehensive suite of engineering services, a...

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...

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

You will have the opportunity to work on various modern web applications across a variety of platforms focusing on the backend. Should you choose, this role will allow you to expand your leadership capabilities as you progress in the company. The team tend to go into the Oxford office once a month.

Senior Sales Development Representative (SDR) – UK Remote - Corporate Gifting Are you an ambitious sales professional with experience selling into large corporations? Do you thrive on building relationships with Marketing Managers, Heads of People, and Executive Assistants? If so, this could be the perfect next step for you. We’re working with a thoughtful gifting company run by a lovely team...