4,547 Javascript Engineer jobs in the United Kingdom
Senior JavaScript Engineer
Posted 3 days ago
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Principal JavaScript Engineer
Posted 6 days ago
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Job Description
Principal JavaScript Engineer (TypeScript / React / Node.js)
£150,000–£170,000 + Equity | Hybrid – 3 days in London
We’re helping a VC-backed SaaS scaleup reinvent how organisations manage and approve spend, from software requests to supplier onboarding, and they’re gearing up for serious growth. With enterprise clients already on board and revenue climbing, they’re looking for an outstanding Principal Engineer to drive their platform forward.
The company in a nutshell
- Funding : $25M Series A from top-tier investors
- Leadership : Founders with a track record of building one of Europe’s best-known B2B scale-ups
- Growth : Plans to 10× revenue and expand to 200+ enterprise customers within 3 years
What’s on offer
- Influence the architecture and scalability of a modern, cloud-native, no-code platform
- Build features from scratch and own them through deployment and user impact
- Work with a high-trust engineering culture where product ownership is real, not buzzwords
- Ship fast — multiple times a day — thanks to a rock-solid CI/CD setup
- Collaborate closely with product, design, and leadership to shape the roadmap
Tech stack you’ll be working with : TypeScript, React, Node.js, AWS Serverless (Lambda, DynamoDB, EventBridge)
What you’ll be doing:
This isn’t just about writing code, it’s about owning problems end-to-end and influencing every part of the product lifecycle.
You’ll:
- Lead the design and delivery of high-impact, full-stack features from concept to production.
- Make key architectural decisions to ensure our systems remain fast, reliable, and observable as we scale to hundreds of enterprise customers.
- Collaborate closely with product, design, and leadership to set roadmap priorities and define technical strategy.
- Work across the stack — from React frontends to AWS serverless backends — and own your projects from infrastructure to styling.
- Deploy continuously (multiple times per day) using their robust CI/CD pipelines.
- Mentor other engineers and help grow a high-performance, high-trust team.
What we’re looking for:
- 6–10+ years in software engineering (open to exceptional candidates outside this range)
- Proven full-stack ability with TypeScript, React, and Node.js
- Experience with AWS serverless technologies
- Passion for delivering excellent products at speed without sacrificing quality
- Experience scaling early-stage products or leading top-tier engineering teams
You’ll thrive here if you:
- Love working in high-growth, fast-moving environments
- Naturally take ownership rather than waiting for instructions
- Care deeply about clean code, great UX, and real customer outcomes
- Have a track record of excellence in any discipline
Benefits
- Hybrid working: 3 days a week in our new Victoria HQ (Tues–Thurs)
- Visa sponsorship and relocation packages are available
- Equity with meaningful upside in a high-growth business
- Work closely with the new VP of Engineering (ex-top European scaleup)
- Engineering team doubling this year — your impact will be huge
Fast hiring process — 2–3 weeks
- Intro chat with Hiring Manager
- Pair programming in TypeScript
- Engineering Culture & System Design
- Final culture interview
This is your chance to join one of Europe’s most exciting early-stage tech teams — building category-defining software with autonomy, impact, and the kind of growth potential that doesn’t come around often.
Apply now or reach out to Sam Barcia for a confidential conversation.
Principal JavaScript Engineer
Posted 6 days ago
Job Viewed
Job Description
Principal JavaScript Engineer (TypeScript / React / Node.js)
£150,000–£170,000 + Equity | Hybrid – 3 days in London
We’re helping a VC-backed SaaS scaleup reinvent how organisations manage and approve spend, from software requests to supplier onboarding, and they’re gearing up for serious growth. With enterprise clients already on board and revenue climbing, they’re looking for an outstanding Principal Engineer to drive their platform forward.
The company in a nutshell
- Funding : $25M Series A from top-tier investors
- Leadership : Founders with a track record of building one of Europe’s best-known B2B scale-ups
- Growth : Plans to 10× revenue and expand to 200+ enterprise customers within 3 years
What’s on offer
- Influence the architecture and scalability of a modern, cloud-native, no-code platform
- Build features from scratch and own them through deployment and user impact
- Work with a high-trust engineering culture where product ownership is real, not buzzwords
- Ship fast — multiple times a day — thanks to a rock-solid CI/CD setup
- Collaborate closely with product, design, and leadership to shape the roadmap
Tech stack you’ll be working with : TypeScript, React, Node.js, AWS Serverless (Lambda, DynamoDB, EventBridge)
What you’ll be doing:
This isn’t just about writing code, it’s about owning problems end-to-end and influencing every part of the product lifecycle.
You’ll:
- Lead the design and delivery of high-impact, full-stack features from concept to production.
- Make key architectural decisions to ensure our systems remain fast, reliable, and observable as we scale to hundreds of enterprise customers.
- Collaborate closely with product, design, and leadership to set roadmap priorities and define technical strategy.
- Work across the stack — from React frontends to AWS serverless backends — and own your projects from infrastructure to styling.
- Deploy continuously (multiple times per day) using their robust CI/CD pipelines.
- Mentor other engineers and help grow a high-performance, high-trust team.
What we’re looking for:
- 6–10+ years in software engineering (open to exceptional candidates outside this range)
- Proven full-stack ability with TypeScript, React, and Node.js
- Experience with AWS serverless technologies
- Passion for delivering excellent products at speed without sacrificing quality
- Experience scaling early-stage products or leading top-tier engineering teams
You’ll thrive here if you:
- Love working in high-growth, fast-moving environments
- Naturally take ownership rather than waiting for instructions
- Care deeply about clean code, great UX, and real customer outcomes
- Have a track record of excellence in any discipline
Benefits
- Hybrid working: 3 days a week in our new Victoria HQ (Tues–Thurs)
- Visa sponsorship and relocation packages are available
- Equity with meaningful upside in a high-growth business
- Work closely with the new VP of Engineering (ex-top European scaleup)
- Engineering team doubling this year — your impact will be huge
Fast hiring process — 2–3 weeks
- Intro chat with Hiring Manager
- Pair programming in TypeScript
- Engineering Culture & System Design
- Final culture interview
This is your chance to join one of Europe’s most exciting early-stage tech teams — building category-defining software with autonomy, impact, and the kind of growth potential that doesn’t come around often.
Apply now or reach out to Sam Barcia for a confidential conversation.
Full Stack JavaScript Engineer
Posted 12 days ago
Job Viewed
Job Description
We’re building a membership platform for the future of live events that prioritises and rewards loyal fans.
At the heart of every meaningful live event lies the desire to feel connected, valued, and part of a shared community. That’s why we built Planet, an end-to-end membership platform that allows artists, venues, and brands to truly understand their audiences.
But we don’t stop there. Through The Beat, our personalisation engine, we go beyond one-off, transactional moments and establish lasting connections with fans. By harnessing insights and learnings from over two years of research into fan engagement, we’re building a future where:
- Loyal fans feel truly seen and prioritised
- Engagement is as seamless and as simple as possible to action
Our vision is to enable impactful, personalised interactions with every fan, fostering deeper connections and more valuable communities. Together, Planet and The Beat help remove the time and resources traditionally required for fan engagement, making it effortless to take every campaign and live event to the next level.
Requirements
Sounds great! What’s my part in this?As a Full-Stack Engineer, you’ll play a key role in building the next generation of tools and features that power our platform. You’ll work across the stack using TypeScript, Next.js, Apollo GraphQL, and PostgreSQL, delivering functionality that supports fans, artists, and internal teams.
This is a great opportunity to work in a collaborative, fast-paced environment where your code directly shapes the experience of thousands of users.
Key Responsibilities:- Build and maintain features across the stack using Next.js (React), Node.js, Apollo GraphQL, and PostgreSQL
- Collaborate with product, design, and engineering to scope, implement, and iterate on new functionality
- Write clean, maintainable, and well-tested code
- Optimise backend performance and API reliability
- Help refine technical requirements and contribute to architectural decisions
- Contribute to CI/CD processes and deployment automation
- Support internal operations by monitoring infrastructure, resolving issues, and enhancing internal tools as needed
- Participate in code reviews and knowledge-sharing across the team
- Solid experience building full-stack applications using TypeScript, Next.js, and Apollo GraphQL
- Comfortable designing and querying GraphQL APIs, both client and server-side
- Strong backend experience with PostgreSQL and relational data modelling
- Familiarity with AWS services, including ECS, Lambda, RDS, and S3
- Experience in CI/CD environments and agile development workflows
- Strong problem-solving skills and an eye for performance and maintainability
- Excellent communication and collaboration skills
- Experience working in a high-demand, live event or fast-moving environment.
- Knowledge of performance testing and simulating high-traffic scenarios.
- Experience with the latest versions of Next.js including app router and server components.
- Experience working with the OpenAI API or similar LLM services
Benefits
What’s it like working at Planet?
We’re a remote-first team that values flexibilityWe are a remote-first company, but our London office (near Oxford Circus) is available for regular visits for in-person collaboration.
- Our commercial and product teams work together in person 2-3 days a week, but for this role, you can be fully remote with the option to visit the office as needed.
- Our development team is fully remote but based in the UK, with a virtual stand-up each day.
We’ve put structured processes in place to help career progression, including:
- Fortnightly one-on-ones to support your growth
- Monthly creative sessions to spark new ideas
- Quarterly team get-togethers to align on our journey
- A monthly reflection to celebrate wins and lessons learned
- Competitive salary based on experience, with incentives tied to company success
- Join at an exciting time of international growth with the chance to shape your role as part this
- 25 days holiday + UK public holidays, plus additional paid time off between Christmas and New Year
- Remote-first working model, with the flexibility to work from anywhere in the UK
- Quarterly allowance for attending live gigs
What to expect next from us?
- Initial Chat: A conversation with our Tech Lead to learn more about you and introduce our product, business, and culture.
- Technical Discussion: A deeper conversation with the core team to see your ideas in action.
Junior Software Developer - Web Applications
Posted 15 days ago
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Job Description
During your apprenticeship, you will:
- Receive structured training in programming languages such as Python, JavaScript, and relevant frameworks (e.g., React, Node.js).
- Participate in the full software development lifecycle, from requirements gathering and design to coding, testing, and deployment.
- Collaborate with senior developers and product managers on various projects.
- Write clean, maintainable, and efficient code.
- Assist in debugging and troubleshooting software issues.
- Learn and implement best practices in software development, version control (Git), and testing methodologies.
- Contribute to team discussions and knowledge sharing sessions.
- Develop a deep understanding of cloud technologies and database management.
- Engage in continuous learning to stay updated with emerging technologies.
- Work on real-world projects that provide immediate value to clients.
- A strong passion for technology and a keen interest in software development.
- Basic understanding of programming concepts and logic (experience with any programming language is a plus).
- Excellent problem-solving and analytical skills.
- Strong communication and teamwork abilities, essential for a remote environment.
- Self-motivated and able to manage time effectively to meet deadlines.
- Ability to learn quickly and adapt to new technologies.
- A minimum of 5 GCSEs at grade C or above (including Maths and English) or equivalent qualifications, or A-levels in relevant subjects.
- Residency within the UK is required for the apprenticeship program.
Junior Software Developer - Web Applications
Posted 22 days ago
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Job Description
Responsibilities:
- Assist in the design, development, and testing of web applications.
- Write clean, efficient, and well-documented code under the guidance of senior developers.
- Participate in the full software development lifecycle, including requirements gathering, coding, testing, and deployment.
- Learn and apply various programming languages and frameworks (e.g., JavaScript, Python, React, Node.js).
- Troubleshoot and debug software issues, working collaboratively to find solutions.
- Contribute to team meetings and agile development processes.
- Collaborate with designers and other team members to implement user-friendly interfaces.
- Understand and adhere to coding standards and best practices.
- Participate in code reviews to learn from peers and improve code quality.
- Support the maintenance and enhancement of existing applications.
- Undertake formal training and study towards recognized IT qualifications.
Qualifications:
- A strong interest and foundational knowledge in computer programming and web development.
- Familiarity with at least one modern programming language (e.g., JavaScript, Python, Java, C#).
- Basic understanding of HTML, CSS, and web technologies.
- Eagerness to learn and develop new technical skills.
- Good problem-solving abilities and attention to detail.
- Effective communication and teamwork skills.
- Ability to work independently and manage time effectively in a remote setting.
- A minimum of A-Levels or equivalent in relevant subjects (e.g., Computer Science, Maths) is preferred, but passion and potential are key.
- GCSEs in English and Maths (or equivalent).
- Must be eligible to undertake an apprenticeship program.
Senior UI/UX Designer (Web Applications)
Posted 1 day ago
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Job Description
Key Responsibilities:
- Conduct user research, including interviews, surveys, and usability testing, to understand user needs and behaviors.
- Create detailed user personas, user journey maps, and information architecture diagrams.
- Develop wireframes, low-fidelity prototypes, and interactive high-fidelity mockups for web applications.
- Design visually compelling and intuitive user interfaces, ensuring adherence to brand guidelines and design principles.
- Establish and maintain comprehensive design systems and style guides for consistency across applications.
- Collaborate closely with product managers, software engineers, and stakeholders to define product requirements and deliver user-centered solutions.
- Champion user-centered design principles and advocate for the user throughout the product development process.
- Iterate on designs based on user feedback, usability testing, and performance data.
- Present design concepts and rationales clearly and persuasively to various audiences.
- Ensure designs are compliant with accessibility standards (e.g., WCAG).
- Stay current with emerging UI/UX trends, technologies, and best practices.
- Mentor junior designers and contribute to the team's growth and skill development.
This is a remote-first position, offering the flexibility to work from anywhere within the UK. Our client is dedicated to building a collaborative and innovative remote culture, utilizing advanced digital tools to foster seamless teamwork. You will be a critical asset in shaping the future of their digital product offerings. While this role is remote, it involves developing applications that could be utilized by users within the **Birmingham, West Midlands, UK**, region and beyond, requiring a broad understanding of user contexts.
Qualifications:
- Bachelor's or Master's degree in Human-Computer Interaction (HCI), Design, Computer Science, or a related field, or equivalent practical experience.
- Minimum of 6-8 years of professional experience in UI/UX design, with a focus on web applications.
- A strong and diverse portfolio showcasing expertise in user research, wireframing, prototyping, and visual design.
- Proficiency in industry-standard design and prototyping tools (e.g., Figma, Sketch, Adobe XD).
- In-depth understanding of user-centered design principles, usability best practices, and accessibility standards.
- Experience in developing and maintaining design systems.
- Excellent communication, presentation, and interpersonal skills.
- Proven ability to collaborate effectively with remote teams, product managers, and developers.
- Experience working in agile development environments.
- Understanding of front-end development constraints and possibilities is a plus.
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Senior UX/UI Designer - Web Applications
Posted 2 days ago
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Job Description
Key Responsibilities:
- Conduct user research, including interviews, surveys, and usability testing, to understand user needs and behaviours.
- Develop user personas, journey maps, wireframes, prototypes, and high-fidelity mockups.
- Design intuitive user interfaces for web and mobile applications, ensuring consistency and adherence to brand guidelines.
- Collaborate with cross-functional teams to define product vision, strategy, and user experience requirements.
- Iterate on designs based on user feedback, analytics, and stakeholder input.
- Create style guides, design systems, and UI kits to ensure design consistency across products.
- Work closely with front-end developers to ensure accurate implementation of designs.
- Present design concepts and rationale clearly and persuasively to stakeholders.
- Stay up-to-date with the latest design trends, tools, and best practices in UX/UI.
- Contribute to a culture of design excellence and innovation within the team.
- Advocate for the user throughout the product development process.
- Mentor junior designers and contribute to the team's growth.
Qualifications and Skills:
- A strong portfolio showcasing exceptional UX/UI design work for web applications.
- 5+ years of experience in UX/UI design.
- Proficiency in industry-standard design and prototyping tools (e.g., Figma, Sketch, Adobe XD, InVision).
- Deep understanding of user-centered design principles, usability heuristics, and interaction design.
- Experience with user research methodologies and usability testing.
- Knowledge of HTML, CSS, and JavaScript is a plus.
- Excellent visual design skills with a strong sense of typography, colour, and layout.
- Strong communication, presentation, and interpersonal skills.
- Ability to manage multiple projects and deadlines in a fast-paced, remote environment.
- A Bachelor's degree in Design, HCI, Computer Science, or a related field, or equivalent practical experience.
Lead Frontend Developer - Scalable Web Applications
Posted 3 days ago
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Job Description
Remote Junior Software Developer - Web Applications
Posted 15 days ago
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Job Description
Program Highlights & Responsibilities:
- Complete a structured training curriculum covering core programming concepts, web development frameworks (e.g., React, Angular, Node.js), databases, and version control systems (Git).
- Work on real-world projects, contributing to the development of functional and user-friendly web applications under the guidance of senior developers.
- Learn to write clean, maintainable, and efficient code following industry best practices.
- Participate in code reviews, providing and receiving constructive feedback.
- Assist in debugging and resolving software defects.
- Collaborate with the development team through virtual meetings and communication tools.
- Develop an understanding of Agile development methodologies.
- Gain exposure to cloud platforms and deployment processes.
- Build a strong portfolio of completed projects.
- Opportunity to achieve recognized industry certifications.
Ideal Candidate Profile:
- A genuine passion for software development and technology.
- Basic understanding of programming concepts (any language is a plus).
- Strong problem-solving skills and a logical approach to challenges.
- Excellent communication and interpersonal skills, comfortable working remotely.
- Self-motivated and eager to learn independently.
- Ability to manage time effectively and meet deadlines.
- Good attention to detail.
- Must be legally eligible to work in the UK and reside within the UK.
- A strong desire to build a long-term career in software engineering.