javascript jobs in London

DescriptionYou are responsible for leading HR governance and operational oversight across the UK, with a strong focus on employment law compliance, payroll‑linked processes, policy management and risk mitigation. You translate complex legislative and regulatory requirements into clear, practical HR and payroll frameworks, ensuring they are embedded...

DescriptionWe are looking for an experienced Senior Developer to support the delivery of secure, modern digital products and services across Government and Defence.You will work within a multidisciplinary agile team to design, build, test and deploy cloud-based applications and services, primarily within AWS environments.What You'll Be DoingDesign, develop...

Aspire to work with an organization that inspires you to push boundaries and offer rewarding career opportunity? We have a fantastic opening of a Lead Ruby Developer for a company that has a sole mission to boost performance, availability and stability of the company’s platform. The position offers attractive compensation as well as a number of other...

We are exclusively working with an exciting Branding company who are shaping the Entertainment/Media industry with their innovative and analytics technology platform. As a business they thrive of the start to finish attitude, someone who isn't afraid to get their hands dirty and solve complex problems, high energy and comfortable working outside of rigid...

Our Financial Services Client is looking for a Senior Platform TECH LEAD (Temenos/T24) with APIs experience to develop, and implement software/system solutions for improving the functionality of core banking applications and services. Must Have:Experience building and consuming APIs, working with relational databases, and what it takes to run code in a...

Introduction Saab UK is part of Scandinavia's largest defence company, bringing together the best of Swedish and British innovation. Saab offers world-leading solutions and services in defence, aviation, space, and civil security to keep people and society safe. Our UK presence has been growing at pace, meaning we can offer a wide range of opportunities for...

Lynx Recruitment are looking for a Technical Consultant to join a leading AI consultancy, working across AI, software development and product engineering to deliver innovative solutions for clients.Check below to see if you have what is needed for this opportunity, and if so, make an application asap.You will work with clients, consultants, engineers and...

Senior Python Engineer Key Responsibilities Design, develop, and maintain scalable and reliable software solutions, ensuring alignment with Principals and Architects.Collaborate with cross-functional teams, including Product, QA, and DevOps, to deliver high-quality features.Lead code reviews and technical discussions, and contribute to architectural...

Software EngineerA fantastic opportunity for Software Engineers to join a highly innovative technology company at the forefront of advanced AI research and development. Working as part of a world-class engineering team, you will help design and develop cutting-edge software solutions that tackle complex real-world challenges. This role would suit Software...

The RoleAs a Senior Backend Engineer at Pynea, you will play a vital role in shaping and building our modern, collaborative, professional social network. Your mission is to leverage your expertise in backend development to design, develop, maintain and scale robust server-side solutions, ensuring seamless integration with our front-end systems. Collaborating...

Begin Your Journey as a Frontend Developer Intern!🌍 Location: London (UK-based candidates only)📅 Duration: 6 months💼 Employment Type: Internship💡 Who Should Apply: Fresh Graduates passionate about Frontend Development and eager to gain hands-on experience in the tech industry.Why This Internship?Join our innovative tech team at Hybytes and dive...

DescriptionBehind every investment is a person with ambitions, motivations and values. While we know that every client is unique, they come to J.P. Morgan Personal Investing for the same reason: our straightforward and transparent approach to investing, and the trust that 150 years of J.P. Morgan heritage brings. J.P. Morgan Personal Investing offers...

Company DescriptionWho We Are Aucerna is the world leading provider of Integrated Strategy, Planning and Reserves solutions for the Oil and Gas Industry.  Aucerna is a growing company, with competitive compensation and significant opportunity for personal and career growth. We are an equal opportunity employer and encourage applications from all qualified...

DescriptionTAKE YOUR CAREER IN A NEW DIRECTION At Eurostar, we’re fuelling the future of rail travel – operating in five countries and sparking new opportunities for travellers. But our trains connect much more than just people and places. They’re helping us build a greener, more inclusive future for everyone. Join us and you’ll be part of a...

This is one of the world’s top algorithmic trading firms, looking for an experienced full stack developer to architect and design enhancements for global web-based systems using mainly Python and React.Working closely with teams across the firm – Algo, Business Development, Middle Office, Trading Tech – your code will impact business logic, provide...

Job brief We are looking for a Full-Stack Developer to join our team. The ideal candidate will have experience with both front-end and back-end development. They will be responsible for the entire web development process, from designing user interfaces to implementing server-side functionality. Requirements -Proven experience as a Full Stack Developer or...

We are looking for a Senior UX Engineer to bridge design and frontend development, delivering intuitive, accessible, and high-performance digital experiences. You will lead prototyping, champion design systems, facilitate client sessions, and build advanced frontend interfaces with modern web technologies. The role involves mentoring team members, advocating...

Senior Web Security EngineerAbout iProoviProov provides science-based biometric solutions that enable the world’s most security-conscious organizations to streamline secure remote onboarding and authentication for digital and physical access. Our award-winning liveness technology and iSOC offer unmatched resilience against deepfakes and generative AI...

We’re seeking a skilled and motivated Software Engineer with 3+ years of experience to help develop and maintain our cloud-based recruitment CRM. You’ll work with a modern PHP / LAMP stack in an agile environment, contributing to a product that automates temporary staffing from booking to billing.Key Responsibilities:• Develop scalable web...

Job Title: Full Stack Developer Job Type: Permanent Base Office: London Working Structure: Hybrid   About Us We are a growing digital team working with a wide range of clients to build, scale and maintain robust, high-quality web applications. Our culture is collaborative, innovative and focused on delivering solutions that make a real impact. We...