Front-End Javascript Developer - London

Capgemini
London

Front-End Javascript Developer - LondonReference Code: 220926-en_GBContract Type: PermanentProfessional Communities: Software Engineering

About the job your 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 |

Posted 2025-09-24

Recommended Jobs

Academic Support Assistant

EdEx
Islington, Greater London

Academic Support Assistant Q - Are you a graduate who aspires to become a fully qualified teacher? Q - Are you looking to gain valuable experience working with young people in an educational enviro…

View Details
Posted 2025-10-11

Marketing & Comms Manager

Fabric Social
London

The Role As Marketing & Comms Manager, you’ll lead our own social, PR and marketing efforts: growing our profile in London, Dublin, and the new markets we’re moving into. You’ll seed stories, p…

View Details
Posted 2025-09-30

IT & Business Systems Support Administrator

RIXO
London

About RIXO RIXO’s story began in the London living room of best friends Henrietta & Orlagh, born from their passion for vintage. Our philosophy is making all our customers feel the best version of…

View Details
Posted 2025-09-30

Teaching Assistant

Reeson Education
London

SEN Teaching Assistant - Westminster Immediate Start Assisting ASD students in a number of classes Maximum of 8 pupils per class Westminster SEN School Immediate start Free CPD cour…

View Details
Posted 2025-09-24

Contracts Supervisor

Bennett & Game Recruitment Limited
Kingston upon Thames, Greater London

Bennett & Game are proud to be working with a highly respected contractor that specialises in commercial roofing and building envelope projects. This role is an outstanding opportunity to lead on the…

View Details
Posted 2025-10-09

Organisational Development Business Partner

Lockton
London

Your Responsibilities As our OD Business Partner, you’ll act as a trusted advisor to senior leaders, working with the Head of HR to design and deliver initiatives that strengthen organisational ca…

View Details
Posted 2025-10-12

Financial and Insurance advisor

Prestige IFA Jobs
London

Do you combine your “power” with initiative and sales talent?  If you like to work independently and are nevertheless a team player, then you are the ideal reinforcement for our client.   Our cli…

View Details
Posted 2025-10-12

EA & Business Assistant - International Design Studio

Oriel Partners
London

We are seeking an exceptionally organised and proactive Operations Manager & Business Assistant for a fast-growing, international luxury design studio. With offices in London and Miami, the studio…

View Details
Posted 2025-09-27

National Sales Manager

Premier Jobs UK
City of London, Greater London

Our client is a rapidly growing financial advisory firm with a national footprint of Insurance Advisors, Mortgage Advisors and Financial Advisors. As part of their next stage of growth, they are looki…

View Details
Posted 2025-10-12

After-school Nanny for a busy family, Job ID J1DFA3

Little Ones UK Ltd
Nine Elms, Greater London

This lovely family based in Nine Elms, London, near Vauxhall, is seeking an After-school Nanny to care for their school-aged child. The role includes all general nanny duties, such as preparing and s…

View Details
Posted 2025-09-21