Front-End Javascript Developer

Capgemini; Manchester; Hybrid; GBP 60,000 - 80,000; Full time

Job summary

A global business and technology transformation partner is seeking a highly skilled Senior / Lead Front-end JavaScript Developer in Manchester. You will lead the development of impactful web applications while providing technical leadership and mentoring to a team. Successful candidates will have proficiency in HTML5, CSS3, JavaScript, and experience with modern development practices. The role promotes a hybrid working environment to support work-life balance.

Benefits

Flexible working arrangements

Extensive training opportunities

Community of experts and support

Qualifications

• Proficiency in HTML5, CSS3, and JavaScript (ES6+).
• Proven experience of Express.js and Nunjucks.
• Experience using the GOV.UK Design System.
• Familiarity with the GOV.UK CASA UI framework.
• Experience with MongoDB and NoSQL variants.
• Experience with TypeScript and modern development tools.
• Knowledge of Cloud-Native development on AWS.
• Familiarity with CI/CD pipelines and DevOps practices.
• Experience with version control systems (Git).
• Strong problem-solving skills.

Responsibilities

• Provide technical leadership and mentorship to a team.
• Design, develop, and maintain front-end components.
• Collaborate with architects to design secure architectures.
• Lead and participate in agile development processes.
• Conduct thorough code reviews.
• Continuously improve development processes.
• Work closely with clients to deliver solutions.

Skills

HTML5

CSS3

JavaScript (ES6+)

Express.js

Nunjucks

GOV.UK Design System

GOV.UK CASA UI framework

MongoDB

NoSQL

TypeScript

Cloud-Native development on AWS

CI/CD pipelines

Git

Job description

About The Job You’re Considering

We are seeking a highly skilled and experienced Senior / Lead Front-end JavaScript Developer to join our Experience Engineering team. In this role, you will lead the development of an impactful web application for a public sector programme, ensuring high performance, scalability, and maintainability. You will work closely with cross‑functional teams to deliver engaging solutions that meet our client’s needs.

Your role

• Provide technical leadership and mentorship to a team of developers, guiding them through best practices and ensuring high‑quality code.
• Design, develop, and maintain front‑end components of web applications using HTML, CSS & JavaScript.
• Collaborate with architects and other developers to design robust, scalable, and secure architectures for new projects and enhancements to existing systems.
• Lead and participate in agile development processes, including sprint planning, daily stand‑ups, and retrospectives.
• Conduct thorough code reviews to ensure code quality, performance, and adherence to best practices.
• Continuously improve our teams’ development processes, tools, and techniques to enhance productivity and product quality.
• Work closely with clients and internal teams to understand requirements, provide technical guidance, and deliver solutions that exceed expectations.
• Stay up to date with the latest industry trends and technologies, and drive continuous learning and innovation within the team.

Your Skills And Experience

• Proficiency in HTML5, CSS3, and JavaScript (ES6+).
• Proven experience of Express.js and Nunjucks.
• Experience using the GOV.UK Design System.
• Familiarity with the GOV.UK CASA UI framework.
• Experience with MongoDB and NoSQL variants writing robust and scalable queries and operations.
• Experience with TypeScript and modern development tools and practices.
• Knowledge of Cloud‑Native development on the AWS Platform (IAM, SQS, S3, Secrets Management, KMS).
• Familiarity with CI/CD pipelines and DevOps practices.
• Experience with version control systems (Git).
• Understanding of web standards, accessibility, performance and development best practice.
• A track record in a lead or senior developer role, with experience of mentoring and guiding development teams.
• Excellent problem‑solving skills and the ability to think critically and creatively.

Your Security Clearance

To be successfully appointed to this role, it is a requirement to obtain Security Check (SC) clearance. To obtain SC clearance, the successful applicant must have resided continuously within the United Kingdom for the last 5 years, along with other criteria and requirements.

Throughout the recruitment process, you will be asked questions about your security clearance eligibility such as, but not limited to, country of residence and nationality. Some posts are restricted to sole UK Nationals for security reasons; therefore, you may be asked about your citizenship in the application process.

What does ‘Get The Future You Want’ mean to you?

You will be empowered to explore, innovate, and progress. You will benefit from Capgemini’s ‘learning for life’ mindset, meaning you will have countless training and development opportunities from thinktanks to hackathons, and access to 250,000 courses with numerous external certifications from AWS, Microsoft, Harvard ManageMentor, Cybersecurity qualifications and much more.

You’ll be bringing your unique skills and perspectives to the team, inspiring and taking inspiration from your teammates as you unlock value in everything you do. You’ll be joining a professional community of experts, who have got your back and will support you every step of the way.

You will be encouraged to have a positive work‑life balance. Our hybrid‑first way of working means we embed hybrid working in all that we do and make flexible working arrangements the day‑to‑day reality for our people. All UK employees are eligible to request flexible working arrangements.

Why you should consider Capgemini

Growing clients’ businesses while building a more sustainable, more inclusive future is a tough ask. When you join Capgemini, you’ll join a thriving company and become part of a diverse collective of free‑thinkers, entrepreneurs and industry experts. We find new ways technology can help us reimagine what’s possible. It’s why, together, we seek out opportunities that will transform the world’s leading businesses, and it’s how you’ll gain the experiences and connections you need to shape your future. By learning from each other every day, sharing knowledge, and always pushing yourself to do better, you’ll build the skills you want. You’ll use your skills to help our clients leverage technology to innovate and grow their business. So, it might not always be easy, but making the world a better place rarely is.

About Capgemini

Capgemini is a global business and technology transformation partner, helping organisations to accelerate their dual transition to a digital and sustainable world, while creating tangible impact for enterprises and society. It is a responsible and diverse group of 340,000 team members in more than 50 countries. With its strong over 55‑year heritage, Capgemini is trusted by its clients to unlock the value of technology to address the entire breadth of their business needs. It delivers end‑to‑end services and solutions leveraging strengths from strategy and design to engineering, all fuelled by its market‑leading capabilities in AI, generative AI, cloud and data, combined with its deep industry expertise and partner ecosystem. The Group reported 2024 global revenues of €22.1 billion.

Get The Future You Want | www.capgemini.com