5 principal full stack engineer jobs found

UK | Fully Remote (UK-based) Staff/Principal Full Stack Engineer (Contract) 6 months | £900 per day (Outside IR35) High-growth Product Engineering Team Build and evolve a core CRM product used across the business We're supporting a product-led organisation that is rebuilding and modernising key areas of an existing CRM platform . This role suits an experienced contractor who enjoys working in brownfield environments , partnering closely with the business, and shaping how a product evolves rather than just delivering tickets. You'll operate as a senior, hands-on engineer within a growing engineering group, working closely with senior leadership to take the product from where it is today to where it needs to be next . The role This is a product-focused engineering position , not a pure delivery role: Rebuild and enhance existing CRM features within a live production system Work end-to-end across Front End and Back End systems Partner closely with...

Principal Full Stack Engineer – TypeScript, React, Node, Agentic Workflow (Claude Code), AWS, Forward Deployed, AI‑Native Engineering – OUTSIDE IR35 Reporting to the Director of Engineering, this is a genuinely outstanding contract opportunity for a rockstar Principal Engineer to lead the development of a greenfield SaaS product . We’re looking for a ‘best of breed’, deeply senior, technically hands‑on engineer who thrives in complex problem spaces and fast-moving start-up & scale-up environments. You’ll need a genuinely Product Centric mindset and approach twinned with experience of AI‑Native Engineering and Agentic Workflow . You’ll be embedded into a product squad, frequently working Forward Deployed ; sitting shoulder‑to‑shoulder with clients to understand their workflows, shape solutions in real time, and ship production-grade software that transforms how they operate. You’ll own outcomes end‑to‑end across the stack, setting the technical bar for...

Principal Full Stack Engineer - TypeScript, React, Node, Agentic Workflow (Claude Code), AWS, Forward Deployed, AI-Native Engineering - OUTSIDE IR35 Reporting to the Director of Engineering, this is a genuinely outstanding contract opportunity for a rockstar Principal Engineer to lead the development of a greenfield SaaS product . We're looking for a best of breed', deeply senior, technically hands-on engineer who thrives in complex problem spaces and fast-moving start-up & scale-up environments. You'll need a genuinely Product Centric mindset and approach twinned with experience of AI-Native Engineering and Agentic Workflow . You'll be Embedded into a product squad, frequently working Forward Deployed ; sitting shoulder-to-shoulder with clients to understand their workflows, shape solutions in Real Time, and ship production-grade software that transforms how they operate. You'll own outcomes end-to-end across the stack, setting the technical bar for the...

UK | Fully Remote (UK-based) Staff/Principal Full Stack Engineer (Contract) 6 months | £900/day (Outside IR35) High-growth Product Engineering Team Build and evolve a core CRM product used across the business We're supporting a product-led organisation that is rebuilding and modernising key areas of an existing CRM platform. This role suits an experienced contractor who enjoys working in brownfield environments , partnering closely with the business, and shaping how a product evolves rather than just delivering tickets. You'll operate as a senior, hands-on engineer within a growing engineering group, working closely with senior leadership to take the product from where it is today to where it needs to be next. The role This is a product-focused engineering position, not a pure delivery role: Rebuild and enhance existing CRM features within a live production system Work end-to-end across Front End and Back End systems Partner closely with...

For this vacancy, we require senior .Net Engineers with experience working on AWS, and building advanced agentic workflows. Competitive day rates, outside IR35, fully remote. Reapit – Who are we? Reapit is the original end-to-end business technology provider for estate agencies of all sizes. We’ve been helping sales and lettings agents build relationships and grow their businesses for more than 25 years. Our technology empowers property professionals across Europe, the Middle East, Australia, and New Zealand to work with buyers, sellers, tenants, and landlords to deliver a dream home experience. Worldwide, over 100,000 agents across more than 15,000 branches use Reapit to run their businesses, manage properties, collect rent, engage clients, and provide outstanding customer service every time. What you’ll be doing Reporting to the Director of Engineering, you’ll operate as a highly senior, technically hands-on backend engineer, embedded into a squad and owning...