90 Junior Developers jobs in London

Founding Engineer - £100k - Remote, AI + Equity

What if your next role let you rewrite the rules of mobile connectivity—without ever touching legacy code?

We’re looking for a Senior Mobile Developer to join a remote-first team (Europe-based) that’s building the future of mobile carriers from the ground up. This isn’t about patching up old systems or working around outdated infrastructure. It’s about creating a sleek, user-first mobile experience that makes traditional telecoms look like dial-up.

You’ll be leading the development of a cross-platform app, built with a clean, scalable architecture and a product that’s already live and growing fast. You’ll be hands-on with everything from UI polish to performance tuning, and you’ll have a strong voice in architectural decisions, tooling, and release strategy.

The team is small, sharp, and fully remote. Everyone here codes, cares, and collaborates. We move fast, iterate constantly, and keep meetings to a minimum. You’ll be trusted to lead features end-to-end, mentor other devs, and help scale the app as it expands across Europe. You’ll work closely with product and design to ship experiences that feel effortless but are anything but simple under the hood.

This isn’t just another app job. It’s a chance to help build the future of mobile from the ground up. The mission is to make connectivity as seamless and modern as the apps we use every day—and the team is backed by experienced founders and operators who know how to build and scale consumer tech.

If you’ve built and shipped Flutter apps at scale, and you’re excited by the idea of disrupting an entire industry with elegant code and bold ideas, we’d love to talk.

Apply now or reach out if you want to chat more about the role.

Venchr is an equal-opportunity employer. All qualified applicants will receive consideration for employment without regard to age, ancestry, colour, family or medical care leave, gender identity or expression, genetic information, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran status, race, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable laws, regulations and ordinances.

Founding Engineer - £100k - Remote, AI + Equity

What if your next role let you rewrite the rules of mobile connectivity—without ever touching legacy code?

We’re looking for a Senior Mobile Developer to join a remote-first team (Europe-based) that’s building the future of mobile carriers from the ground up. This isn’t about patching up old systems or working around outdated infrastructure. It’s about creating a sleek, user-first mobile experience that makes traditional telecoms look like dial-up.

You’ll be leading the development of a cross-platform app, built with a clean, scalable architecture and a product that’s already live and growing fast. You’ll be hands-on with everything from UI polish to performance tuning, and you’ll have a strong voice in architectural decisions, tooling, and release strategy.

The team is small, sharp, and fully remote. Everyone here codes, cares, and collaborates. We move fast, iterate constantly, and keep meetings to a minimum. You’ll be trusted to lead features end-to-end, mentor other devs, and help scale the app as it expands across Europe. You’ll work closely with product and design to ship experiences that feel effortless but are anything but simple under the hood.

This isn’t just another app job. It’s a chance to help build the future of mobile from the ground up. The mission is to make connectivity as seamless and modern as the apps we use every day—and the team is backed by experienced founders and operators who know how to build and scale consumer tech.

If you’ve built and shipped Flutter apps at scale, and you’re excited by the idea of disrupting an entire industry with elegant code and bold ideas, we’d love to talk.

Apply now or reach out if you want to chat more about the role.

Venchr is an equal-opportunity employer. All qualified applicants will receive consideration for employment without regard to age, ancestry, colour, family or medical care leave, gender identity or expression, genetic information, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran status, race, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable laws, regulations and ordinances.

Founding Engineer - £100k - Remote, AI + Equity

What if your next role let you rewrite the rules of mobile connectivity—without ever touching legacy code?

We’re looking for a Senior Mobile Developer to join a remote-first team (Europe-based) that’s building the future of mobile carriers from the ground up. This isn’t about patching up old systems or working around outdated infrastructure. It’s about creating a sleek, user-first mobile experience that makes traditional telecoms look like dial-up.

You’ll be leading the development of a cross-platform app, built with a clean, scalable architecture and a product that’s already live and growing fast. You’ll be hands-on with everything from UI polish to performance tuning, and you’ll have a strong voice in architectural decisions, tooling, and release strategy.

The team is small, sharp, and fully remote. Everyone here codes, cares, and collaborates. We move fast, iterate constantly, and keep meetings to a minimum. You’ll be trusted to lead features end-to-end, mentor other devs, and help scale the app as it expands across Europe. You’ll work closely with product and design to ship experiences that feel effortless but are anything but simple under the hood.

This isn’t just another app job. It’s a chance to help build the future of mobile from the ground up. The mission is to make connectivity as seamless and modern as the apps we use every day—and the team is backed by experienced founders and operators who know how to build and scale consumer tech.

If you’ve built and shipped Flutter apps at scale, and you’re excited by the idea of disrupting an entire industry with elegant code and bold ideas, we’d love to talk.

Apply now or reach out if you want to chat more about the role.

Venchr is an equal-opportunity employer. All qualified applicants will receive consideration for employment without regard to age, ancestry, colour, family or medical care leave, gender identity or expression, genetic information, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran status, race, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable laws, regulations and ordinances.

Join our team of passionate individuals who strive to be one of the best game studios in

the world. We are currently seeking experienced Web Dev Engineers who can contribute to

our growth. As a fully remote studio with colleagues across the globe, we emphasise clear

communication as much as our technical skills.
 

Companion Group is an AAA co-development gaming studio with a globally distributed and

fully remote setup. It is renowned for its ability to overcome the most intricate challenges in

multiplayer game development and developing reliable multi-player games. We have become

the primary choice for game dev studios aspiring to elevate their latest multiplayer titles,

enabling scalability supporting large numbers of players, maximising player density, and

crafting immersive gameplay experiences. Our portfolio boasts groundbreaking games

developed in collaboration with major studios worldwide.

We firmly believe that bringing together talented and passionate individuals and providing

them with direction, autonomy, and trust creates a truly unique and inspiring work

Environment.

• Create well-designed and tested code using best practices for web
  development, including for responsive design and mobile display

• Incorporate data from back-end databases and services

• Collaborate closely with other technical experts to ensure optimal network performance and seamless integration of multiplayer features. Work across the team to help provide a seamless web experience. Be at the forefront of our web presence and allow users a dynamic and immersive web experience.

• Provide accurate development estimates and comprehensive reporting to support efficient team collaboration across web, backend, and game teams
  

Skills:

• Demonstrate a strong understanding of coding processes, standards, and methodologies

• Possess at least 5 years of professional web development experience, showcasing your expertise

• Showcase your abilities in React, NextJS, TypeScript, MUI and cloud service providers with your successful project history. Ability to work with CI/CD pipelines, PRs, and Web APIs

• Excel in teamwork within a collaborative development environment, contributing to the collective success.

• Embrace a positive and proactive approach, fostering a supportive and inspiring work atmosphere

• Exhibit a genuine passion for continuous learning and growth within a world-class web development team

• Experience in implementing web development workflows and operations using a variety of tools, including Azure DevOps.

• Experience in backend development, preferably with C# and ASP.Net Core.

• Build sites emphasising for reliability, extensibility, site performance, and cost-effectiveness. Profile and optimise code when necessary
  

Rewards:

• Competative salary of £35,000 - £50,000 Per annum.

• Embark on a clearly defined career ladder, enabling you to progress in responsibilities and be rewarded accordingly. We like to grow from within.

• Enjoy the flexibility of a fully remote role, collaborating with top game developers from around the world.

• Join forces with industry leaders who will inspire and guide you on your path to success. Helping you grow and learn is a big part of our DNA
  

Let’s build worlds that inspire and immerse players in the magic of a timeless era. Apply now and become part of one of the best game studios in the world!

Waracle are looking for a Senior Web Developer for an exciting new role joining our world-class digital technology consultancy and home to a diverse, smart, curious and ambitious community of specialists in technology-driven transformation.

We work with ambitious clients to help them solve their biggest business and customer challenges. We help our clients to innovate and create intelligent digital products and services. We thrive on complex challenges and deliver business-critical IT transformation projects, moving seamlessly from strategy, design and delivery to operations.

This role is available on a short term contract (Outside IR35) basis until the end of 2025 and will require some travel to the London office.

We are seeking a highly skilled and motivated Frontend Web Developer to join our development team. The successful candidate will be responsible for translating design mockups and wireframes into high-quality, reusable, and responsive user interfaces. A deep understanding of modern HTML and CSS best practices is essential, as is significant hands-on experience developing using custom components within Adobe Experience Manager (AEM).

Key aspects of the role include:

• Develop and maintain high-performance, responsive, and cross-browser compatible user interfaces using HTML5 and CSS3 (including pre-processors like SASS/LESS).
• Implement pixel-perfect designs from UI/UX mockups, ensuring technical feasibility.
• Work extensively within Adobe Experience Manager (AEM) to implement and style custom AEM components and templates.
• Leverage the AEM Style System effectively to create component variations and manage component styling without code duplication.
• Collaborate closely with Backend Developers and Technical Architects to define component contracts, integration points, and overall frontend strategy.
• Ensure that frontend code adheres to accessibility standards (WCAG) and SEO best practices.
• Optimise application for maximum speed and scalability.
• Actively participate in code reviews to maintain high quality and standards.
• Troubleshoot and resolve bugs and performance issues.

What you'll bring

• Expert Proficiency in HTML & CSS, including advanced layout techniques and responsive design principles.
• Hands on development experience implementing frontend solutions within the AEM ecosystem.
• Direct experience with Adobe Experience Manager (AEM).
• Proven experience implementing and styling custom AEM components.
• Solid understanding and practical experience using the AEM Style System.
• Collaboration: Excellent communication skills with a proven ability to work effectively alongside Backend Developers and Technical Architects in an agile environment.
• JavaScript Fundamentals: Good working knowledge of vanilla JavaScript (ES6+) for interactivity.
• Version Control: Proficient with Git and common development workflows (branching, merging, pull requests).

The recruitment process you can expect for this role is an initial call with your dedicated Talent Acquisition Partner who will chat with you about Waracle, what you are looking for in a new position, the salary for the role, notice period and benefits (the important stuff). After that, you'll be invited to a two-stage interview process where you have an opportunity to find out more about the role and showcase your skills and experience. Your Talent Acquisition Partner will guide you through the whole process to your first day with us.

We are an equal opportunities employer and welcome applications from all suitably qualified persons regardless of their race, gender, disability, religion/belief, sexual orientation or age.