senior mainframe developer jobs in Milton Keynes

You will be required to attend our client’s site three days per week.

You will see yourself: Identifying problems and potential resolutions to support end users

You will be successful in this role if you have:

You will be expected to participate in an out-of-hours on-call rota to provide 24x7 support of the applications

Are you a Senior Web Developer who fancies redefining operational excellence across higher education, conferencing and events? You'll be joining a company trusted by more than 350 institutions worldwide and backed by 25 years of experience. xujxxms You'll be joining a people-first, purpose-driven business where ideas are valued, growth is supported and impact is truly visible. We're looking for...

Senior Web Developer If you want to know about the requirements for this role, read on for all the relevant information. A fantastic opportunity for a Senior Web Developer to join a well established software company building mission critical web platforms used by large, complex organisations. This is a role well suited to someone from an agency or consultancy background who enjoys working...

Are you a Senior Web Developer who fancies redefining operational excellence across higher education, conferencing and events? You'll be joining a company trusted by more than 350 institutions worldwide and backed by 25 years of experience. You'll be joining a people-first, purpose-driven business where ideas are valued, growth is supported and impact is truly visible. We're looking for a Senior...

I'm working with a mission-driven technology business that genuinely improves the lives of employees and end users in public-impact organisations through digital transformation. They're a well established player in the market, just had a record year in sales, and there's still so much untapped potential to unlock. That's why they're looking for an experienced Business Development Manager to...

Senior Business Development Manager – Fleet Mobility Solutions Provider £50,000 basic - £55,000 basic + £25,000 OTE Uncapped + EV Company Car If you’re ready to make an impact, this is the role that puts you in the driving seat. A competitive package, a premium company car, and the chance to join a private equity-backed business on a rapid growth trajectory. Expect pace, ambition, and the kind...

Up to £72,000 salary, car allowance, bonus, and a clear path for progression with two of the UK’s leading names in industrial services and hazardous waste management. This senior commercial role is ideal for someone ready to drive strategic growth across key sectors, including Civils, Demolition, and Utilities, while shaping long-term partnerships. Why you’ll love this role: - Competitive...

URGENT - IMMEDIATE START AVAILABLE. Opportunity to develop into a Head of / Sales Director role in the future. Candidate was due to start on Monday but has withdrawn due to personal reasons. If there was ever the need to say we need someone who can hit the ground running, this is it. Senior Business Development Manager - SaaS / Proptech / Contech. If you have sold a SaaS solution into...

Senior Development Manager - Onshore Wind, Solar, Battery Storage Salary & Package - up to £80,000 DOE + annual bonus, car allowance, healthcare Remote Working Piper Maddox are partnering with a leader the UK renewable energy industry to hire a key addition to their project development function in 2026. This company are an IPP with a demonstrable track record in successful development,...

About Prighter Prighter is a fast-growing LegalTech company building productised services and SaaS solutions for compliance with data protection as well as AI & digital governance regulations. With the mission to enable companies around the world to comply with regulatory requirements for their digital business, our services and SaaS solutions guide our global clients through the increasingly...

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.

🚀 About Webigence and Spark Travel Webigence has 25 years of experience crafting UX‑first, often highly complex software. Our engineers pair forward‑thinking agile practices with an obsession for intuitive design, shipping products that feel effortless even when the logic underneath is anything but. Alongside a handful of long‑standing third‑party clients, we’re scaling our own SaaS...

You will be working in a fast-paced environment to develop new website themes and add new features in a complex Next. js-based codebase (including a CMS). This is a great opportunity for the right person to take on a challenging and broad role. Homeflow is operating on a fully remote basis but occasional travel will be required for our company meet ups (bi-annually at most in the UK).

Lead Developer London - Hybrid 1/2 days in office £85,000 - £100,000 About Simmer We’re Simmer Eats, one of Europe’s fastest-growing food brands. We’ve grown 10x in the last year, and we’re building the next phase of scale on a modern commerce and technology stack. Our mission is simple: make healthy eating effortless. High-protein, great-tasting meals delivered straight to customers’ doors,...

Department: Support Reports To: Application Software Support Manager Location: Remote Salary: £55k - £60k /yr (depending on experience) Contract Type: Permanent – Full Time Role Summary We're looking for an experienced full-stack .NET developer to join our team in a new and exciting role. This role will initially be supporting an array of clients, helping our support team to continue to...

Job Description About the Business We’re an independent waste brokerage, not a corporate. Our business is built on long-term relationships, trust, and practical recycling and waste solutions that work for our clients. As we continue to grow, we’re looking for an experienced Business Development Manager, ideally with a proven track record in the waste industry, to help us win and develop larger...

We’re looking for a Principal Business Development Manager to join WD Interiors, based within our Old Bailey office in central London, with the opportunity of flexible hybrid working. This is a lead-level role within our business, focused on driving the growth of our private sector workplace and Cat B occupier fit-out portfolio, typically projects valued between £5m and £30m (20,000–70,000 sq....

Business Developer – Biomethane & Biogas - UK & Ireland Sector: Renewable Energy | Biomethane & Biogas Contract: Full-time | Senior-level About SYSADVANCE SYSADVANCE is a growing, agile, multinational company, deploying innovative solutions for the biomethane and biogas market. Market leaders, with a strong entrepreneurial culture, we support developers, operators and industrial clients in...

Business Development Representative – £25k-30k base salary per year, depending on experience + Quarterly commission | Glasgow (Office-based) The Role Are you confident speaking with senior decision-makers? Do you thrive on finding new opportunities and setting the stage for sales success? RtM (Route-to-Market) is a leading business development and demand generation consultancy, working with...

Senior Web Developer If you want to know about the requirements for this role, read on for all the relevant information.A fantastic opportunity for a Senior Web Developer to join a well established software company building mission critical web platforms used by large, complex organisations. This is a role well suited to someone from an agency or consultancy background who enjoys working closely...