Software Developer jobs in St Charles

ABOUT US: LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a commitment to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge

About The Job Mercor connects elite creative and technical talent with leading AI research labs. Headquartered in San Francisco, our investors include Benchmark , General Catalyst , Peter Thiel , Adam D'Angelo , Larry Summers , and Jack Dorsey . Position: Data Collection Specialist Type: Contract Co

Stirling Warrington

£38,000 - £43,000 /year

Offline Programmer Commutable from Chesterfield, Alfreton, Derbyshire and surrounding areas. Salary up to £43,000 per annum Day Shift – 4 Day week (Flexitime) Permanent Do you have experience working within precision machining and high-quality solutions, from either aerospace or subcontracting indus

Stirling Warrington

£35,000 - £43,000 /year

CNC Programmer Commutable from Chesterfield, Alfreton, Derbyshire and surrounding areas. Salary up to £43,000 per annum Day Shift – 4 Day week (Flexitime) Permanent Do you have experience working within precision machining and high-quality solutions, from either aerospace or subcontracting industrie

About Marex Marex Group plc (NASDAQ: MRX) is a diversified global financial services platform providing essential liquidity, market access and infrastructure services to clients across energy, commodities and financial markets. The group provides comprehensive breadth and depth of coverage across fo

Lead Full Stack Software Developer | £80,000 - £100,000 We're working with a fast-growing UK SaaS technology company building data-driven digital products on this exciting opportunity. This is a high-impact, hands-on leadership role where you will shape the next generation of customer-facing platfor

About Marex Marex Group plc (NASDAQ: MRX) is a diversified global financial services platform providing essential liquidity, market access and infrastructure services to clients across energy, commodities and financial markets. The group provides comprehensive breadth and depth of coverage across fo

Senior Software Developer in Test - Appvia - UK Security Clearance eligibility required Location: London, UK (Hybrid - ~1 day per week in office) Contract: Permanent, Full-time Package: £70,000 - 80,000 + 10% Bonus + 10% Shares + Benefits (see more below) About Appvia Appvia is a specialist cloud, p

Optiver is looking for a Software Engineer to join our Developer Experience team. This team is crucial in building the tools and platforms that power our development workflows, enabling our engineers to work fast and with confidence. You’ll be responsible for building the infrastructure, tooling and

Haystack

Senior Software Developer | £500 - £600 We're working with a global energy transformation leader with a 150-year legacy of innovation on this exciting opportunity. We are looking for a heavy-hitting Senior Developer who can bridge the gap between complex finance logic and high-performance Ruby on Ra

Job description We are seeking a Software Developer to join our team in Winnersh UK, supporting long-term Government projects. This role requires strong Java fundamentals and the ability to deliver clean, secure, maintainable back-end code within a structured, compliance-driven environment. You will

Viridien ( www.viridiengroup.com ) is an advanced technology, digital and Earth data company that pushes the boundaries of science for a more prosperous and sustainable future. With our ingenuity, drive and deep curiosity we discover new insights, innovations, and solutions that efficiently and resp

ITOL Recruit

Trainee AI Engineer – No Experience Needed Future-proof your career in Artificial Intelligence – starting today. Looking for a career change? Currently employed but want something better? Or maybe you're between jobs and ready for a fresh start? ITOL Recruit's AI Traineeship is designed to get you i

About The Job Mercor connects elite creative and technical talent with leading AI research labs. Headquartered in San Francisco, our investors include Benchmark , General Catalyst , Peter Thiel , Adam D'Angelo , Larry Summers , and Jack Dorsey . Position: Data Collection Specialist Type: Contract Co

About Marex Marex Group plc (NASDAQ: MRX) is a diversified global financial services platform providing essential liquidity, market access and infrastructure services to clients across energy, commodities and financial markets. The group provides comprehensive breadth and depth of coverage across fo

Summary Responsible for all statistical programming/data review reporting and analytics development aspects of several studies, a medium to large sized project or project-level activities. Acts as a key collaborator and strategic partner in ensuring that drug-development plans are executed efficient

Cytel

Sponsor-dedicated: Working fully embedded within one of our pharmaceutical clients, with the support of Cytel right behind you, you'll be at the heart of our client's innovation. As a Senior Statistical Programmer you will be dedicated to one of our global pharmaceutical clients; a company that is d

Site Name: GSK HQ, Upper Providence Posted Date: Apr 24 2026 Company Overview At GSK, we have bold ambitions for patients, aiming to positively impact the health of 2.5 billion people by the end of the decade. Our R&D focuses on discovering and delivering vaccines and medicines, combining our un

Chief Executive Officer (CEO) – Remote A founding opportunity to build and scale a white-label software delivery business within a multi-venture tech group Company Details StrideGhost is a white-label web, software, and app development delivery company operating within the StrideNex group. It provid

Avanti

£45,000 - £50,000 /year

Avanti is working with an exciting early-stage 5-person FinTech startup based in London that is about to launch its first product in the embedded finance space. Their platform helps businesses unlock working capital through intelligent, AI-driven invoice financing solutions, integrated directly into