Full Stack Engineer

Senior Full Stack Engineer / Tech Lead – Node.js, React & AWS

Location: Warwick,UK

Employment Type: Contract (3 to 5 months, Possibility of extension)

Working Model: Hybrid (3 days/week Onsite)

What You'll Do

• Assess the existing Node.js, React, React Native and AWS-based application and identify areas for improvement.
• Analyse existing architecture, code quality, technical debt, scalability and production stability.
• Define and implement recommendations to stabilise, modularise and future-proof the codebase.
• Improve application architecture to support greater scalability, flexibility and maintainability.
• Take ownership of technical solutions from assessment and design through to implementation.
• Provide technical stewardship and leadership for new product development.
• Work closely with product and engineering stakeholders to translate requirements into robust technical solutions.
• Improve development practices around code quality, testing, releases and production support.
• Investigate and resolve complex production issues and contribute to reducing recurring incidents.
• Establish appropriate engineering standards, patterns and best practices across the codebase.
• Collaborate closely with other engineers and stakeholders and operate effectively in a fast-paced environment.
• Help create a more modular and resilient platform that can evolve as product requirements grow.

Required Skills & Experience

Backend

• Strong commercial experience with Node.js.
• Strong understanding of backend architecture, APIs and scalable application design.
• Experience building and maintaining production-grade applications.
• Strong understanding of REST APIs, integrations and asynchronous processing.

Frontend

• Strong experience with React.js and TypeScript.
• Experience developing modern, scalable frontend applications.
• Experience with React Native is highly desirable.

AWS / Cloud

• Strong hands-on experience with AWS.
• Experience designing and supporting applications running on cloud infrastructure.
• Good understanding of serverless and managed AWS services.
• Experience with services such as Lambda, SQS, Cognito, S3, RDS or similar is highly desirable.

Architecture & Engineering

• Strong experience with system design and software architecture.
• Proven ability to work with and improve existing/legacy codebases.
• Experience with modularisation, refactoring and reducing technical debt.
• Strong understanding of scalability, reliability and maintainability.
• Experience identifying root causes of production issues rather than relying solely on short-term fixes.
• Good understanding of CI/CD, automated testing and release quality.
• Experience with Infrastructure as Code / Terraform is desirable.
• Strong understanding of multi-tenant applications is a plus.

What We're Looking For

We are looking for someone who is more than an individual contributor who simply completes tickets.

You should be comfortable taking ownership of a technical area, challenging existing approaches where appropriate, making architectural decisions, and then rolling up your sleeves and implementing them.

The ideal person will be:

• Hands-on and technically strong.
• Comfortable operating at Senior Engineer / Tech Lead level.
• Strong in both frontend and backend development.
• Comfortable working across application code, architecture and AWS.
• Experienced in stabilising and modernising existing systems.
• Strong at troubleshooting complex production issues.
• Able to make pragmatic technical decisions and explain them clearly.
• Comfortable working with autonomy and taking ownership.
• A strong communicator who can collaborate effectively with product and engineering stakeholders.
• Able to work at pace without compromising engineering quality.

Why Join?

• Take ownership of meaningful technical challenges across Node.js, React, React Native and AWS.
• Have a direct impact on improving the platform's stability, scalability and architecture.
• Play a key role in shaping engineering standards and technical direction.
• Work in a collaborative environment where ownership, autonomy and technical leadership are valued.
• Opportunity to modernise an existing platform and deliver tangible engineering improvements.

Core Technology Stack

Node.js | React | TypeScript | React Native | AWS | Lambda | SQS | Cognito | RDS | S3 | Terraform | REST APIs | Multi-Tenant Architecture | CI/CD

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