React Site Solutions Jobs

You sweat the details. You open a SaaS app and immediately notice the component that shouldn't be a modal, the auth flow nobody thought through, the table that takes half a second too long to load. Most engineers file a ticket. You fix it — and then you make sure it never happens again.That instinct is exactly what this team needs.The companyThis i...

Senior Software Engineer (Full Stack – Systems Ownership)Defence & National Security | UK Wide | Up to £100,000 + PackageMost “full stack” roles mean building features.This one means owning systems.We’re working with a well-funded Defence AI business building secure, large-scale software platforms used across Defence, National Security and Governme...

MCS Group is delighted to be partnering with a growing consultancy as they establish a brand-new engineering presence in Belfast. Our client is a high-growth cloud, data, and AI engineering consultancy delivering mission-critical solutions for enterprise and scaling clients across modern cloud ecosystems. This is a unique opportunity to join at an ...

Senior Ruby Developer - Leading Health Tech - HybridSalary: Paying £75,000 - £100,000 + EquityIndustry: Health Tech (Tech for Good)Location: Hybrid, 2 days a week in Central London OfficeTech Stack: Ruby on Rails, TypeScript, AWS 👩🏻 💻The Company 🚀We're excited to have partnered with a leading health tech business which is transforming an intere...

Senior Ruby Developer - Leading Health Tech - HybridSalary: Paying £75,000 - £100,000 + EquityIndustry: Health Tech (Tech for Good)Location: Hybrid, 2 days a week in Central London OfficeTech Stack: Ruby on Rails, TypeScript, AWS 👩🏻 💻The Company 🚀We're excited to have partnered with a leading health tech business which is transforming an intere...

Senior Java Developer | Belfast | £65,000-£80,000Senior back-end developer role within a newly established Belfast trading technology hub Java-focused; real-time exchange connectivity, event-driven architecture, distributed systems Small founding team of 4 engineers; site lead already in place (placed by Ocho) £65,000-£80,000 | Belfast based Ground...

Title – Senior/Lead UI DeveloperClient – Fintech Start-Up (Trading)Rate - Up to £165,000 + BonusLocation – London/HybridAbout the Company: Our client is a rapidly growing fintech start-up building next-generation technology for the FX and cryptocurrency trading markets. Their platform powers modern, high-performance trading infrastructure used by p...

Senior C++ Software EngineerStaff-level individual C++ contributor with a clear path to technical leadership C++ server-side engineering handling global transaction volumes Hybrid working with genuine flexibility to work from home 35 days holiday, private medical, pension matched to 5%, and more An engineering-led environment, free of bureaucracy, ...

Mason Frank is proud to partner with a global real estate business who are expanding its development functionAs the senior developer, you will play a crucial role in designing, developing, and implementing custom Salesforce solutions. You’ll collaborate with business analysts, project managers, and other team members to create innovative solutions ...

Lead BI DeveloperLondon, three days per week in officeUp to £95,000This is a high impact Lead BI Developer role with clear ownership of business intelligence delivery in a consumer focused digital environment. You will shape how data is modelled, optimised and surfaced, while setting technical standards that support insight driven decision making a...