83 Javascript Developer jobs in the United Kingdom

Javascript Developer UI – React, Typescript, Java - FinTech

Remote First | London (UK) | Up to £115k + Benefits

Are you a Javascript developer who thrives in a collaborative, test-driven environment? Do you believe in pair programming, continuous integration, and clean, maintainable code? If so, we’d love to hear from you. Our FinTech client could be the ideal role for you.

Skills:

• Must have: Commercial React, Typescript and Java experience.
• Be interested in working on Java as well as Typescript
• Strong understanding of TDD
• Pair-programming
• Clear communication and teamwork

• Extreme Programming (XP) principles, with a strong focus on TDD, BDD, and DDD .
• Pair programming culture ensures high-quality code and continuous learning.
• Continuous integration —every commit is releasable, and automation is key.
• We value growth and flexibility , welcoming developers from all backgrounds.

What You’ll Be Doing

• Building resilient and adaptable fintech platforms in React, Typescript and Java
• Refactoring to improve code design
• Writing comprehensive tests for every commit
• Automating processes to improve efficiency
• Rotating across teams to enhance collaboration

Javascript Developer UI – React, Typescript, Java - FinTech

Remote First | London (UK) | Up to £115k + Benefits

Are you a Javascript developer who thrives in a collaborative, test-driven environment? Do you believe in pair programming, continuous integration, and clean, maintainable code? If so, we’d love to hear from you. Our FinTech client could be the ideal role for you.

Skills:

• Must have: Commercial React, Typescript and Java experience.
• Be interested in working on Java as well as Typescript
• Strong understanding of TDD
• Pair-programming
• Clear communication and teamwork

• Extreme Programming (XP) principles, with a strong focus on TDD, BDD, and DDD .
• Pair programming culture ensures high-quality code and continuous learning.
• Continuous integration —every commit is releasable, and automation is key.
• We value growth and flexibility , welcoming developers from all backgrounds.

What You’ll Be Doing

• Building resilient and adaptable fintech platforms in React, Typescript and Java
• Refactoring to improve code design
• Writing comprehensive tests for every commit
• Automating processes to improve efficiency
• Rotating across teams to enhance collaboration

Founded by ex-Cazoo automotive veterans, this Central London based start-up is a on a mission to revolutionise the automotive industry. They’re building an AI-first platform for operational efficiency; seeking to move the industry beyond outdated paper-based systems.

Who are they?

You’ll get the opportunity to work with some of the UK’s largest retailers and see direct impact from your code from day 1. Their founders and investors are from a network of automotive experts from huge names in the industry such as McLaren and Aston Martin.

They’ve just received a fresh round of investment so 2025 is the year for them to take their product to the next level, with AI at the forefront of their ideas here.

Currently their entire product team consists of 7 engineers, 1 product designer and 3 directors who are still hands on with design and product. They’re looking to add 2 more engineers and a product designer to this.

They work in product squads and have 3 work streams going at any one time. For the first 4 months they’ll look to get you settled in and then are happy for you to move around into different squads. They’re keen for you to get to know the whole product as much as possible so you’ll be exposed to a lot of technology.

What are they looking for?

They’re keen to talk to engineers with a passion for learning. You should have a Computer Science degree (or similar) and a minimum of 3+ years of experience in web application development. They’d like someone who is comfortable with their core stack, including Node.js, TypeScript, Vue.js, GraphQL, AWS, and serverless architecture. A solid grasp of Git and CI/CD pipelines is essential.

You'll thrive there if you're product-focused, user-centered, and enjoy working closely with cross-functional teams to build world-class user experiences.

It’s a huge bonus if you’ve worked with, or have an interest in AI as this is at the forefront of their ideas. Exposure to TDD, DynamoDB and life in a start-up/scale-up environment will also hold you in good stead.

What’s in it for me?

They’re offering up to £55K but they will flex for the right person. You’ll receive equity from day 1 as well as a high-spec Macbook and noise cancelling headphones. There are also performance driven bonuses on offer as well as 28 days holiday, plus an additional one on your birthday.

If this is of interest then drop me email on and we can discuss further.

About Eventogy:

NO AGENCIES - Please do not attempt to canvas from here

Eventogy is a leading event management platform that caters to large corporate enterprise businesses, such as banks, law firms, and government bodies. We specialise in providing event management solutions for highly regulated industries, with a strong focus on security and compliance. As a design-first organisation, we are currently undertaking a complete rebuild of our platform to create an even more intuitive and engaging user experience.

We are seeking a skilled Javascript Developer to join our team and play a crucial role in implementing our redesigned platform. The successful candidate will work closely with our design and development teams to create pixel perfect and highly functional web applications, ensuring an exceptional user experience.

Responsibilities:

1. Collaborate with UX/UI designers and back-end developers to create visually appealing, user-friendly, and highly functional and responsive web applications.
2. Convert designs and wireframes into high-quality HTML, CSS, and JavaScript code.
3. Optimize applications for maximum speed, scalability, and responsiveness.
4. Ensure consistent implementation of brand and design guidelines across all platforms.
5. Develop and maintain reusable code and libraries for future use.
6. Stay up-to-date with the latest front end development technologies and best practices.
7. Conduct thorough testing and debugging to ensure the seamless functioning of applications.
8. Collaborate with cross-functional teams, including product managers, developers, and stakeholders, to define and implement innovative solutions for the product direction, visuals, and user experience.

Requirements

1. A Bachelor's degree in Computer Science, Web Development, or a related field.
2. A minimum of 3 years of experience as a Front End Developer, preferably in the event management or technology sector.
3. Proficient understanding of web markup, including HTML5, CSS3, and JavaScript.
4. Experience building NextJS Web Applications using Typescript.
5. Familiarity with TailwindCSS.
6. Experience with responsive and adaptive design, as well as an understanding of the technical limitations and constraints of web applications.
7. Strong understanding of cross-browser compatibility issues and ways to work around them.
8. Knowledge of code versioning tools, such as Git.
9. Excellent problem-solving skills and a keen eye for detail.
10. Strong communication and teamwork skills, with the ability to work effectively with cross-functional teams.

Benefits

All applicants MUST have working Visas or be UK residents and be currently present in the UK.

This is a hybrid role and we can negotiate the terms of your office presence, but for your information, we currently come in 2-3 times a week to the Farringdon office in London.

We have the finest coffee shop on our doorstep. A food market right in front of the office. Access to gym membership, with conditions! Training is catered for as and when needed. Pret coffee subscription included

NO AGENCIES - Please do not attempt to canvas from here.

Salary: from £50,000 subject to qualification.

JOB SUMMARY

We are looking for a highly motivated Senior Vue.js Developer to join our team.  You will be responsible for evolving and scaling our existing platforms as well as working on new greenfield projects. Mentoring other developers, practising excellent communication and motivation within the team is essential. There is a lot of scope for responsibility and the individual should be comfortable taking ownership of and managing all aspects of the front-end stack. You will join a team of front-end, back-end and database developers to deliver modern Progressive-Web-Applications, Applications and Websites.

ESSENTIAL DUTIES

• Evolving and scaling our existing platforms with informed technical decisions.
• Conceptualizing and developing new, stimulating user-facing features.
• Creating reusable libraries and efficient code for broader team use in future projects.
• Prioritizing the optimization of applications for optimal speed and scalability.
• Managing Pull Requests in alignment with the team's workflow, ensuring project expectations and deadlines are met.
• Refining internal processes to enhance the performance, reliability, and usability of our platforms.
• Identifying and making improvements to any performance-related issues affecting our web and mobile-based applications.
• Upholding stringent security standards for web and mobile applications, promptly resolving and protecting against vulnerabilities.
• Staying in tune with innovations and advancements in JavaScript and applying them to keep our applications highly competitive and adept.
• Mentoring team members in a supportive environment to further their growth and understanding of JavaScript's core concepts and best practices.
• Fostering an atmosphere for innovation and positivity, inspiring team members to deliver their best work consistently.

Requirements

Essential Skills

• Strong understanding of the following technologies:
• ES6 & JavaScript
• Vue.js
• Web markup, including HTML & CSS
• Asynchronous request handling using the likes of REST or GraphQL
• Front-end build tools, such as Vite, Webpack and CLIs
• Git and its related platforms like Github or Gitlabs
• Package management using npm
• Browser rendering behaviour and performance
• Passion for writing quality, high-performance and maintainable code following best practices

Desirable Skills

• Typescript
• Nuxt.js
• Node.js
• Storybook
• CI/CD, Pipeline management, GitHub Actions
• Docker
• Prototyping/Storyboarding
• Graphics editing with the likes of Figma, Photoshop & Illustrator
• Mobile & Responsive design
• Testing tools like Vitest, Jest, Playwright, Cypress

 KEY DELIVERABLES

• Leverage advanced JavaScript techniques to develop high-quality, efficient code, assess coding opportunities, conduct robust code reviews, streamlining codebase, and prototypes to continuously improve performance and user experience. Accurately estimate the timescales for design, development and testing phases to ensure realistic and effective project scheduling.
• Evaluate the potential impact of each change request, proactively communicating any associated risks to project managers and the leadership team.
• Collaborate proactively with the development team to coordinate the seamless delivery of high-quality application code.

• REQUIRED EXPERIENCE / QUALIFICATIONS
• IT professional with 5 years of design and technical background and knowledge
• Proven experience in web design and development
• Analytical and problem-solving skills
• Self-motivated and able to work/travel independently
• Proactive, able to work with a high level of responsibility and autonomy, able to work under pressure
• Flexible in terms of working time with a priority on “getting the job done”
• A good team player who can perform and work on a wide variety of tasks simultaneously

COMPETENCIES/SKILLS

Technical Skills

• Advanced JavaScript expertise
• Empowered decision making
• Strong oral and written communication skills
• Cultivates teamwork and collaboration
• Effective allocation and management of resources

Personal Effectiveness

• Acts with integrity and professionalism
• Demonstrates adaptability and resilience
• Excellent organizational and time management skills
• Sensitivity towards cultural diversity
• Takes a proactive lead, handles queries, manages issue resolution
• Commitment to quality, detail-oriented approach, and a strong work ethic

Interpersonal Skills

• Influences others across all levels
• Foster open communication
• Builds and maintains positive relationships
• Delivers persuasive presentations to senior management

Growth & Innovation

• Challenges existing procedures
• Identifies weaknesses and proposes improvements
• Encourages continuous learning and improvement

The above statements are intended to describe the general nature and level of work being performed by people assigned to this job. They are not intended to be an exhaustive list of all responsibilities, duties, and requirements.

Full Stack JavaScript Developer / Engineer (JavaScript Vue.js Node) London to £80k

Are you a collaborative JavaScript technologist?

You could be progressing your career as a Full Stack JavaScript Developer at a scale-up tech company, that enables smart matching for commercial van drivers and consumers, via job bidding and route optimisation, streamlining processes and delivering CO2 carbon neutral targets, the company has been established 10 years, with recent funding of £25 million.

What's in it for you:

• Salary to 0k
• 25 days holiday (increasing to 30), plus Christmas Eve
• Vitality healthcare plus a host of wellbeing benefits
• Pension
• Family leave and enhanced maternity scheme
• Continual career and self development opportunities
• Onsite gym, and partnership with Octopus Electric Vehicles and Evans Cycle to Work scheme, there's showers and towels if you do decide to cycle!

Your role:

As a Full Stack JavaScript Developer you'll collaborate as part of an Agile technology team to design and develop, troubleshoot and solve complex software issues to help scale and future proof the business. You'll work across the full tech stack using JavaScript and Vue.js on the front end, there's a range of other tech in the stack (TypeScript, Node.js, Java, Python and of course a bit of legacy PHP!), you'll be encouraged to explore new technologies and use the best tool for the job as well as own your own DevOps and deployment.

There's an emphasis on getting stuff done and immediate business impact, alongside longer term strategy.

Location / WFH:

There's a hybrid work from home model with three days a week in the Hammersmith office and the other two work from home. When in the office you can enjoy the onsite gym, barista coffee and free breakfast.

About you:

• You have strong full stack JavaScript development skills and are happy to work on projects that could be weighted either way or a 50/50 split
• You have experience with JavaScript frameworks they use Vue.js but Angular or React experience is fine
• You also have backend experience with Node, TypeScript and Python
• You're product focussed with good business acumen
• You have a good knowledge of APIs and an indepth understanding of web development practices, tools and technologies
• You enjoy learning and picking up new things
• You're flexible and able to adapt to changing priorities
• You have full software development lifecycle experience including CI/CD and testing
• You're collaborative with Agile team experience, happy to mentor more junior developers
• You're likely to be degree educated in Computer Science or similar tech discipline

Apply now to find out more about this Full Stack JavaScript Developer / Engineer (JavaScript Vue.js Node) opportunity.

At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're an equal opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values.

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 |

Who We Are:
AND Digital are a tech company focused on accelerating digital delivery and dedicated to closing the digital skills gap. We’ve been helping organisations build better digital products and stronger digital teams since 2014.

We believe our work should always leave a legacy for the client. We do this through close relationships with our offices (or ‘Clubs’) so that our partners are always prioritized by a regional team close to them.

This unique model has driven success for our clients and ourselves, evidenced by our remarkable organic growth since 2014. Today we number more than 1,300 people with Clubs all over the UK and Europe with plans for global expansion in the next couple of years.

Join us - and help us fulfil our mission to close the world’s digital skills gap.

What you’ll bring to the table:

You will be hands on developing software products. As a result, you will need to be able to:

• Work on large-scale, multiple industries, eCommerce and enterprise-level software development projects using languages and technologies such as ReactJS, NextJS, NodeJS and more
• Be comfortable working in testing orientated and CI/CD environments
• Experience / awareness of TDD/BDD Software development
• Facilitate problem solving and work as a team to make them a reality
• Work in a collaborative environment where your ideas and opinions are valued and respected
  
  It’s helpful if you also have:
• Worked with Junior and other Mid Developers in your team and assist with their mentoring and career development plans
• Experience of .net or Python and an interest in architecture and/or cloud.

Why join AND Digital?

We have three values: wonder, share, and delight. These values inform how we work with clients, and our culture: what it feels like to work for AND. We believe collaboration, ambition, curiosity and fun can drive innovation by creating a better environment for problem-solving.

By joining AND, we’ll provide:

• Opportunities to work on projects with big clients and the chance to produce meaningful work that makes a difference to people’s lives.
• A “Blended Working” model, meaning you will be able to work in a range of locations from; your home, in your clubhouse, on a client, as well as just a change of scenery.
• A dedicated career scrum team, designed to help you reach your career goals and develop the skills you need to be your best self.
• An annual budget for training and upskilling, including allocated days off so you don’t have to study in your own free time.
• Monthly and quarterly team socials - on us - ranging from after work drinks, to driving experience days with your fellow club members.
• A safe environment for you to be yourself and challenge yourself.

Benefits

• 26 days holiday allowance + bank holidays
• 13 days per year for innovation or upskilling
• 2 days per year for volunteering
• Share scheme
• A £1000 flexifund to use on a personalised list of benefits such Gym membership, Cycle to Work Scheme, Health, dental and optical cash plan
• PLUS many more

For a full list of benefits - click here

Equal Opportunities Statement

At AND Digital we embrace diversity and are committed to equal opportunities. We are actively recruiting for a diverse and inclusive workforce so want to ensure we do everything we can to support your application.

We want you to feel safe and empowered to let us know if you require any adjustments to be made to your application or interview process so please speak to our recruitment team.