Senior Front End JavaScript Developer

Senior Front-End JavaScript Developer
UK Wide
£70,000 - £80,000 + perm benefits

This role will require someone either hold current SC clearance or be eligible for SC clearance!

Shape the Future

A leading consultancy practice is currently looking for a passionate and experienced Senior Front-End JavaScript Developer ready to make an impact? Join a dynamic Experience Engineering team and lead the development of impactful web applications for high-profile programmes.

The Role

As a Senior / Lead Front-End Developer, you'll provide technical leadership and mentorship, shaping scalable, high-performance applications that are critical to client success. Working within a collaborative, cross-functional team, you'll drive innovation, influence best practices, and deliver solutions that make a real difference.

What You'll Do

• Lead and mentor a talented team of developers.


• Design, develop, and maintain robust front-end components using HTML5, CSS3, and JavaScript (ES6+).


• Collaborate closely with architects and teams to build scalable, secure solutions.


• Participate actively in agile ceremonies and continuous improvement initiatives.


• Conduct thorough code reviews to maintain high-quality, performant, accessible code.


• Stay ahead of industry trends and foster a culture of continuous learning.


• Engage directly with clients, providing technical leadership and strategic advice.

Your Skills and Experience

• Expertise in HTML5, CSS3, JavaScript (ES6+), and TypeScript.


• Proven experience with Express.js and Nunjucks.


• Familiarity with the GOV.UK Design System and CASA UI framework.


• Experience with MongoDB and other NoSQL technologies.


• Knowledge of AWS cloud-native services (IAM, SQS, S3, Secrets Management, KMS).


• Strong understanding of CI/CD pipelines, DevOps practices, and Git version control.


• Deep knowledge of web standards, accessibility, and performance best practices.


• A history of success mentoring developers and leading projects