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

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