Principal Frontend Developer

Head of Contract Solutions djr | Building the best Interim Information Technology Teams Principal Frontend Engineer (Contract) We’re supporting a large, complex enterprise technology organisation as they build a greenfield Connected Platform that will underpin their digital estate for the next decade. This is a hands-on Principal Engineer role where you’ll set technical direction, lead by example, and help shape modern frontend architecture at scale. The Opportunity You’ll join a newly formed product engineering team working on a cloud-native platform that provides a single access point across multiple enterprise systems.

The focus is on modern frontend engineering, micro-frontends, event-driven architecture, and real-time data. This is not a legacy rescue job, it’s a from-scratch build, with genuine influence over technology choices and engineering standards. What You’ll Be Doing Acting as a hands-on technical leader within a senior engineering team Designing and evolving micro-frontend architectures using React Working closely with architecture, product, data and platform teams Contributing across the stack where required (GraphQL, .NET, AWS) Championing engineering best practice, performance, security and scalability Supporting real-time, event-driven systems and highly decoupled services Mentoring engineers and raising the technical bar across the team Tech Environment Frontend: React, Micro-frontends, GraphQL Cloud: AWS (EKS, ECS, Lambda, MSK, EventBridge, SNS/SQS) IaC & DevOps: Terraform, Docker, GitHub Actions What We’re Looking For Proven experience as a Principal / Lead Engineer in modern frontend systems Deep hands-on React experience, ideally at enterprise scale Strong understanding of micro-frontends and distributed architectures Experience working in cloud-native, AWS-based environments Comfortable operating in greenfield, fast-moving product teams Confident influencing technical direction without formal line management IR35: Inside Duration: 3-6 months+ Seniority level Not Applicable Employment type Contract Job function Information Technology #J-18808-Ljbffr