senior javascript developer jobs in City of London

Senior JavaScript Developer Any additional information you require for this job can be found in the below text Make sure to read thoroughly, then apply. 3-4 days p/week in London Paying up to £80k Senior JavaScript Developer – Would you like the opportunity to work for a fast growing start-up who are on a mission to create an AI tutor to help learners? They’re currently building an all-in-one...

Job Summary: The Trading and Risk Management System (TRMS) team is responsible for developing, supporting and maintaining our front and back office trading web applications using Python, the proprietary Beacon Dependency Graph and Glint, the Beacon UI framework. Before applying for this role, please read the following information about this opportunity found below. The successful candidate...

Full Stack Python / JavaScript Developer - London - £60k 1 day per week in office Ready to make your application Please do read through the description at least once before clicking on Apply. My prestigious financial services client is looking to expand their digital transformation team and require an experienced Full Stack Developer with strong Python & JavaScript to join them working across...

Are you an experienced JavaScript Developer with a passion for building solutions that power the utilities sector? One of my clients are hiring on a contract basis to help deliver technology that keeps the UK’s essential services running smoothly. Scroll down for a complete overview of what this job will require Are you the right candidate for this opportunity What You’ll Do: - Develop and...

You will be working on cutting edge platforms for Property Investments. If you feel you are ready to take the next step of your career then please apply via Link.

You will play a key role in building and scaling cutting-edge SaaS products that help businesses tackle complex energy and sustainability challenges. Key Responsibilities: - Design, develop and maintain high-quality web applications using TypeScript, Node.

js / JavaScript Developer (Outside IR35) Location: UK Remote (Manchester or London preferred for occasional meetings) Start Date: ASAP js / JavaScript Developer to join a 3-month greenfield project , focused on upgrading and modernising an existing system from Perl to Node.js . You'll work alongside a small, agile team to architect and deliver a clean, scalable solution. js and JavaScript...

Empowered By Innovation Birlasoft, a global leader at the forefront of Cloud, AI, and Digital technologies, seamlessly blends domain expertise with enterprise solutions. The company’s consultative and design-thinking approach empowers societies worldwide, enhancing the efficiency and productivity of businesses. As part of the multibillion-dollar diversified CKA Birla Group, Birlasoft with its...

Senior Full-Stack Engineer - Go/JavaScript Salary: £80,000 - £90,000 Location: Fully-remote Tech: Go, JavaScript, .NET About the role: We’re working with a leading organisation in the legal sector, renowned for their award-winning approach to technology-driven innovation, in support of their efforts to strengthen their growing SaaS team. They are looking for a senior software engineer with...

Head of Engineering – Digital Product Studio (London / Hybrid)#128187; £130,000–£150,000 + Profit Share | Employee-Owned | AI, Mobile, Web, Cloud | Start Jan 2026 We’re working with a global digital product studio known for creating beautifully crafted, high-impact digital products and experiences. They partner with some of the world’s most innovative brands-combining design, technology, and...

You will be engaged in designing and delivering scalable data solutions that power key insights across the organisation. It is an ideal opportunity for a Data Engineer who has extensive experience working with Big Data technologies and Palantir Foundry. What You’ll Do: Build and deploy large-scale data processing systems, leveraging Big Data frameworks and cloud platforms.

Principal JavaScript Engineer (with C++ / Java / C# exposure) Location: London (Hybrid – 2 days WFH) Salary: £150,000 - £200,000 (Permanent)pension, private healthcare, gym membership, 25 days + 8 BH holiday allowance, tech/hardware budget. Do you have the right skills and experience for this role Read on to find out, and make your application. A high-growth software company is building the...

Job Summary: The Trading and Risk Management System (TRMS) team is responsible for developing, supporting and maintaining our front and back office trading web applications using Python, the proprietary Beacon Dependency Graph and Glint, the Beacon UI framework. The successful candidate will contribute to the growth of the platform, exercising an eye for detail across all aspects of the...

QA Engineer | C# | JavaScript | Playwright | FinTech | £95,000 The information below covers the role requirements, expected candidate experience, and accompanying qualifications. My client is seeking a QA Engineer to work across the front, middle and back office. This role is seeking candidates who have exposure to the below skill set and come from a financial background. Location -...

You will play a key role in building and scaling cutting-edge SaaS products that help businesses tackle complex energy and sustainability challenges. Design, develop and maintain high-quality web applications using TypeScript, Node.

Software Engineer - Salary: £80’000 plus bonus and benefits. NodeJS, JavaScript, TypeScript, Cloud Tech, CI/CD, AI, ML Harrington Starr has partnered with an innovative Technology SaaS Company that specialise in developing unique software systems for clients for across Property Management for both commercial and private consumer markets. This organisation are developing cutting edge web-systems,...

You will be joining a small technology team who have a passion for innovation, collaboration, and providing the best service to their customers as well as embracing new ideas, technologies and approaches. As a JavaScript Engineer, you will be joining the organisation at one of the most exciting times.

Job Summary: Maximise your chances of a successful application to this job by ensuring your CV and skills are a good match. The Trading and Risk Management System (TRMS) team is responsible for developing, supporting and maintaining our front and back office trading web applications using Python, the proprietary Beacon Dependency Graph and Glint, the Beacon UI framework. The successful...

QA Engineer #129489;#C# | JavaScript | Playwright | FinTech | £95,000#128183; My client is seeking a QA Engineer to work across the front, middle and back office. This role is seeking candidates who have exposure to the below skill set and come from a financial background. Hybrid Working - 3 days per week onsite #127970; Strong proficiency in C# and React development, with experience in manual...

You will be joining a technology team who have a passion for innovation, collaboration as well as embracing new ideas, technologies and approaches. As a Senior Software Engineer, you will be working closely with Product and design, taking full responsibility and ownership from conception to post-deployment.