3 senior javascript engineer jobs found in London

Outside IR35 | £500-£525/day | 6 Months Remote - UK We're looking for experienced Backend Engineers to support the development and scaling of Back End platforms powering a range of digital products and internal systems. This is a hands-on contract role suited to senior engineers who enjoy technical ownership, improving system performance, and contributing to architectural decisions while remaining actively involved in delivery. The Role Develop Back End services using Node.js and TypeScript Build and enhance APIs and system integrations Improve scalability, reliability and overall platform performance Contribute to system design and technical decision-making Collaborate closely with engineering and product teams Provide technical guidance where required Technology Environment Node.js TypeScript/JavaScript APIs and microservices Cloud platforms (AWS, GCP or Azure) Distributed Back End systems Experience Required Strong commercial Back End engineering...

CONTRACT SENIOR SOFTWARE ENGINEER - eDV CLEARED NEW CONTRACT JOB OPPORTUNITY AVAILABLE WITHIN A LEADING NATIONAL SECURITY COMPANY FOR A SENIOR SOFTWARE ENGINEER WITH eDV CLEARANCE Contract job opportunity for a Senior Software Engineer Globally leading defence / cyber security company £500 - £750 per day (inside and outside IR35 roles available) London based organisation in an easily accessible location Contract Senior Software Engineer To apply please call or email WHO WE ARE? We are recruiting multiple contract Senior Software Engineers to work with various clients in London ranging from R &D companies, Multi-National Consultancies to SME 's and product based companies. Due to the nature of the work these clients do, you must hold enhanced DV Security Clearance. WHAT WILL THE SENIOR SOFTWARE ENGINEER BE DOING? As a Senior Software Engineer, you will work with an experienced agile team to design and deliver...

Staff Engineer- Backend JavaScript (Node.js/TypeScript) Contract - Outside IR35 Location: London/Hybrid (once every two weeks) Contract: Outside IR35 Duration: 6 months initial (extension likely) Our client, an innovative and forward-thinking technology business, is looking for a Backend JavaScript Staff Engineer to join a high-performing engineering team. This is a fantastic opportunity for a highly experienced, hands-on Back End engineer who enjoys solving complex technical problems, building scalable systems, and providing technical leadership across teams. You will play a key role in shaping Back End architecture, improving platform reliability and performance, and raising engineering standards while remaining deeply involved in hands-on delivery. The Role As a Staff Engineer, you will work across multiple teams to drive technical direction and deliver robust Back End services. You'll lead by example through high-quality code, architectural guidance, and...