2,151 Javascript jobs in the United Kingdom

We’re Dayshape—an award-winning software scale-up with big ambitions and the momentum to match. Trusted by Big Four and many other top professional services firms globally, our AI-powered resource management platform is helping organizations to achieve extraordinary results. 

Our enterprise platform stands apart as the only solution that combines advanced AI, real-time project financials, and firm-wide insights to elevate resource management to a strategic function. By driving profitable growth, powering confident decisions, and ensuring satisfied clients and teams—we're helping our customers build strong organizations and careers for the long term.

Why our customers love Dayshape:

• We help professional firms optimize margins and increase revenue, unlocking access to more profitable work. 

• We provide complete operational visibility today and the tools to confidently predict tomorrow. 

• We empower firms to be where top talent wants to work and where top clients want to buy from.

Recognized as Scotland’s fastest-growing tech company in the Deloitte Technology Fast 50 for three consecutive years, we’ve consistently proven our ability to innovate and deliver real impact—and we’re always looking for like-minded people to join us.

At Dayshape, our purpose is to improve people's working lives, and our culture is an important driving force in helping us to do just that. We're a friendly, inclusive, and ambitious team—driven by our values and a shared commitment to success. If you’re ready to join a fast-growing, high-impact company that’s reimagining resource management, then let’s talk.

We've come a long way in a short time, but there's still so much more we can do. We have grand ambitions to make Dayshape the most scalable, flexible and rapid to deploy solution on the market, and we’re not there yet. That’s where you come in. 

As part of our Engineering team, you will be delivering UI-driven features that help our customers schedule thousands of hours of work with ease.  You will help us build scalability, resilience and high performance into the product, all while keeping an eye on UX, accessibility and aesthetics. 

• Develop new features and enhancements 
• Write and upgrade UI components using JavaScript and Vue.js 
• Work with the rest of our engineering team to enhance scalability, performance and maintainability 
• Support our culture of learning, development and teamwork 
• Be involved in the entire life-cycle of features, including idea creation, deployment, and longer term updates and enhancements  

• Demonstrable experience in a similar commercial software engineer role
• A confident JavaScript developer, happy writing both vanilla JS and modern frameworks (ideally Vue.js) 
• Experience working in a product development environment 
• Comfortable writing unit tests and end-to-end automated tests 
• Passionate about shipping a product you can be proud of 
• Well-informed on good software development principles, and able to implement them pragmatically 
• An excellent and kind communicator, able to raise awkward questions kindly, and to recognise when you need help 
• Experience collaborating with others - you will be working closely with engineering, product and QA colleagues 
• Adaptable, and motivated to try/learn new things 
• Great at breaking down large tasks into manageable chunks 
• Able to see the Big Picture - how your decisions affect your colleagues and your users 

• Experience working with agile development teams on large products 
• Experience in C# or a similar language
• Experience working with complex web interfaces with large DOM views 
• Experience writing tests in Jest, Cypress or Playwright 
• Experience with the rest of our stack: SQL Server, and/or Microsoft Azure 
• Experience working in (or with) the Professional Services industry 

• Starting salary between £39,898 and £6,500, depending on experience 
• Earning potential in the Software Engineer salary band up to £ ,500  
• At least £1 00 per year to spend on professional and personal development   
• 33 days' holiday per year (including

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.

JavaScript Developer

Location: 3 days per wk from home / 2 days in London

Salary: Circa 65k – 80k + Benefits

JavaScript Developer  required by required by fast-growing, revolutionary tech company!

This is a varied, challenging role in a talented team where you’ll be responsible for developing scalable backend services that bring their AI vision to life. You don’t need to be a machine learning researcher but you do need to know how to integrate modern AI capabilities into productions

Essential:

• At least 4yrs backend development experience
li>Solid Node.js expertise
• Strong understanding of scalable backend design, REST/GraphQL APIs, and event-driven systems
• Experience using LLM APIs (OpenAI, Anthropic etc.) or open-source models (Langchain, LLamaIndex, Haystack etc.)
• Able to work with AWS, Docker, and CI/CD pipelines

Tremendous opportunity offering plenty of scope for career progression in a friendly, innovative environment where you'll be able to bring ideas and keep up to date with emerging technologies! 

Apply now for FULL details!

JavaScript Developer

Location: 3 days per wk from home / 2 days in London

Salary: Circa 65k – 80k + Benefits

JavaScript Developer  required by required by fast-growing, revolutionary tech company!

This is a varied, challenging role in a talented team where you’ll be responsible for developing scalable backend services that bring their AI vision to life. You don’t need to be a machine learning researcher but you do need to know how to integrate modern AI capabilities into productions

Essential:

• At least 4yrs backend development experience
li>Solid Node.js expertise
• Strong understanding of scalable backend design, REST/GraphQL APIs, and event-driven systems
• Experience using LLM APIs (OpenAI, Anthropic etc.) or open-source models (Langchain, LLamaIndex, Haystack etc.)
• Able to work with AWS, Docker, and CI/CD pipelines

Tremendous opportunity offering plenty of scope for career progression in a friendly, innovative environment where you'll be able to bring ideas and keep up to date with emerging technologies! 

Apply now for FULL details!

About the role

We have an exciting opportunity for aFull-Stack JavaScript Engineer to join the elementsuite teamsomeone whos passionate about building high-quality products and tools across the stack. This role blends front-end finesse with back-end capability, and were especially keen to meet developers who can pair modern JavaScript frameworks with solid SQL experience to help power our next-gen H.

WHJS1_UKTJ

JavaScript Developer - Hybrid (Manchester )

6 months with possible extension

React, Angular, Vue, Javascript Engineer

A well-established tech company in the analytics space is looking for a JavaScript Developer to join its growing product development team. The organisation builds innovative, privacy-conscious software used by global brands to better understand digital user behaviour.

This is a chance .

WHJS1_UKTJ