101 to 125 of 435 ECMAScript Jobs in London

are followed. Collaborate with back-end developers to integrate RESTful APIs and handle data flow effectively. Knowledge and Skills: Proven experience in React.js and TypeScript development. Strong understanding of JavaScript and modern front-end technologies. Experience with state management libraries like Redux, Recoil, or similar. Familiarity with RESTful APIs Experience with version control systems, such as Git. Solid understanding of More ❯

discussions, and architecture planning sessions. Required Skills & Experience: Proven experience building secure, production-grade front-end applications in regulated environments (e.g., finance, healthcare, government). Strong proficiency in modern JavaScript/TypeScript frameworks (React, Next.js) and responsive UI development. Demonstrated ability to build front-end applications from scratch in greenfield or innovation lab settings. Experience developing interactive UIs, dashboards, chat More ❯

and Entra Suite experience. Competency working with Google Cloud Platform (GCP) or similar Cloud infrastructure platforms and cloud security knowledge. Comfortable with scripting and programming languages, for example Python, Javascript, Bash, Powershell. Use of DevOps tooling, for example GitLab, Terraform, Ansible, Puppet, Docker/K8s. Understanding of common security frameworks, for example SABSA and NIST CSF. Willingness to learning and More ❯

Senior JavaScript Engineer/Developer (Vue.js API) London to £100k Do you have expertise with JavaScript? You could be progressing your career in a senior, hands-on Senior JavaScript Engineer role at a scale-up tech company, that enables smart matching for commercial van drivers and consumers, via job bidding and route optimisation, streamlining processes and delivering CO2 carbon neutral … years, with recent funding of £125 million. You'll be working on complex and interesting systems and can enjoy a range of benefits and perks. As a Senior JavaScript Engineer you'll collaborate as part of an Agile technology team to design and develop, troubleshoot and solve complex software issues to help scale and future proof the business. You'll … focus on front end components using JavaScript and Vue.js, there's a range of other tech in the stack (TypeScript, Node.js, Java, Python and of course a bit of legacy PHP!), you'll be encouraged to explore new technologies and use the best tool for the job as well as own your own DevOps and deployment. There's an emphasis More ❯

help design and deliver secure, scalable services that will support critical operations. Location: London (2 days onsite) Contract: 6 months (OIR35) Rate: £500-550 Key Skills: Strong experience with JavaScript/TypeScript React, Node.js, Next.js AWS Infrastructure-as-code (Terraform, CDK or CloudFormation) CI/CD pipelines experience (bonus) If this sounds like you, apply now. Oscar Associates (UK) Limited More ❯

BigQuery), ETL/ELT pipeline development, and data lake/warehouse implementations for integrating structured and unstructured laboratory and sequencing data sources. • Master Full-Stack technologies, such as Python, JavaScript/TypeScript, Cloud (preferably AWS), SQL, Unix Desirable Skills • Deep familiarity with AI frameworks (LangChain, LangGraph, Pydantic AI) with examples of real-world multi-agent AI applications. If you have More ❯

reviews and ensure adherence to coding standards. Debug and resolve software issues. Participate in agile development processes. Key Skills F# Developer (or strong C# Developer). F# is a JavaScript and .NET language for web, cloud, data-science, apps and more. F# gives simplicity like Python with correctness, robustness and performance beyond C# or Java. F# is open source, cross More ❯

new tools internally to improve access to services, automate processes, and enhance systems in housing and property services. What we're looking for Strong software engineering expertise, ideally with JavaScript (React preferred) and knowledge of cloud platforms (AWS, Azure, Cloudflare). Experience in solution design and delivering end-to-end digital services. Background in consultancy Knowledge of containerisation tools (Docker More ❯

NiFi advise, guidance and training Contribute software and infrastructure towards innovation effort Contribute features and bug fixes to open-source projects Essential Skills/Experience Working knowledge of: Python JavaScript Basic RHEL/CentOS Desirable Skills/Experience React experience Django + django rest framework experience Java C# Golang Go CI/CD, with Jenkins is a plus OpenShift Terraform More ❯

design, development, testing, and integration of SITS and eVision enhancements. Create high-quality technical documentation and support application maintenance. Manage complex data processes using modern web technologies (HTML, CSS, JavaScript, jQuery). Take ownership of system upgrades and integration projects using APIs, XML, XSL, and STUTalk. Maintain data integrity and system compliance with W3C, GDPR, and Cyber Security policies. Collaborate More ❯

design to deployment and maintenance Collaborate with stakeholders to translate business needs into technical solutions Stay abreast of emerging technologies and drive innovation in platform design Tech Stack: Node.js, JavaScript, SQL (essential) Experience with RabbitMQ/Kafka and MongoDB (desirable) What We're Looking For: Strong backend expertise with leadership and mentorship experience Preference for candidates with full-stack exposure More ❯

design, development, testing, and integration of SITS and eVision enhancements. Create high-quality technical documentation and support application maintenance. Manage complex data processes using modern web technologies (HTML, CSS, JavaScript, jQuery). Take ownership of system upgrades and integration projects using APIs, XML, XSL, and STUTalk. Maintain data integrity and system compliance with W3C, GDPR, and Cyber Security policies. Collaborate More ❯

successful company! Successful .NET Architect candidates should be able to demonstrate strong knowledge of: .NET 9/.NET Core/ASP.NET MVC, Web API 2, Entity Framework, Microservices, Azure, JavaScript, Angular 19, Bootstrap, Agile and Azure SQL. Training will be provided in any of the technologies you lack, allowing you to turn your technological weaknesses into your greatest strengths! The More ❯

Performance. Key Tools and Technologies: Solid expertise in tools such as Google Tag Manager, Google Analytics (GA4), Segment/Server-Side Technologies, Snowflake and BigQuery. Tag Management: Familiarity with JavaScript and understanding of HTML/CSS for tag troubleshooting. Problem Solving: Strong problem-solving skills and attention to detail when validating data or resolving tracking bugs. Communication: Excellent communication skills More ❯

will be able to work on a vast variety of projects and get exposure to a variety of technology such as (but not exhaustively) React, NextJS, Vite , NodeJS, Typescript, Javascript, RESTful microservices, NoSQL databases. Our Full Stack Engineers sit within Digital Excellence, part of the Business Technology practice in Capgemini Invent, which leads digital transformation projects across Capgemini. We are … difference for our clients. We work in diverse multi-disciplinary teams, hand-in-glove with our clients. YOUR PROFILE Required Extensive experience of building microservices with NodeJS Experience using JavaScript/Typescript to build fronted web applications using React Experience with NextJS and Vite Experience with cloud technologies such AWS or Azure Experience using Docker, Docker Compose Experience with CI More ❯

several years of hands-on Oracle CPQ experience. Implementation Experience in CPQ Commerce and Configuration flows is essential. You must also have deep expertise in SQL, Java/C#, JavaScript, jQuery, XML/XSL, and BML. Experience with Agile/SCRUM is also required for this role. You must have the ability to support multiple geographically dispersed teams and have More ❯

years’ experience in a DevOps role 1+ years’ experience in operating a production platform 1+ years’ experience in Kubernetes Solid understanding of microservices development Solid understanding of Typescript/JavaScript, Linux, Windows and Networking layers Working knowledge of AWS Step Functions, Lambdas and API Gateways Working in an agile environment A passion for continuous learning, as well as the ability More ❯

to-end software dev stack, as opposed to hyper-focusing on one area of development Develop more advanced applications Tools and technologies learned: Learners will learn to use HTML5, JavaScript and CSS3 Once you have successfully completed the apprenticeship, there will be the option to gain/pursue excellent career development opportunities Apprenticeship Standard Software developer (level 4) Training Provider More ❯

legacy student systems, particularly around data integration and synchronisation. Good understanding of CI/CD pipelines, automated testing, and Infrastructure-as-Code (ARM, Bicep, Terraform) Proficient in C#, PowerShell, JavaScript, or equivalent languages used in Azure development. Familiarity with Azure DevOps, GitHub, or similar tooling for backlog, code, and release management. Experience working in Agile delivery teams with story-based More ❯

design rationale and align stakeholders. High empathy and user-centered mindset. Ability to thrive in a high-delivery, fast-changing environment. Preferred Qualifications Awareness of frontend technologies (HTML, CSS, JavaScript/TypeScript) to collaborate effectively with engineers. Experience contributing to design systems or reusable UI components. Previous exposure to B2B, enterprise, or technical products. Why Join Noxus? At Noxus, design More ❯

design rationale and align stakeholders. High empathy and user-centered mindset. Ability to thrive in a high-delivery, fast-changing environment. Preferred Qualifications Awareness of frontend technologies (HTML, CSS, JavaScript/TypeScript) to collaborate effectively with engineers. Experience contributing to design systems or reusable UI components. Previous exposure to B2B, enterprise, or technical products. Why Join Noxus? At Noxus, design More ❯

smart order routing). Understanding of interest rate derivatives (swaps, futures). Familiarity with automation testing (advantageous). Strong knowledge of SDLC in Agile environments. Technical skills: SQL, Python, JavaScript, APIs, data reconciliation. Experience with Microsoft Office tools (Word, Excel, PowerPoint, Outlook). Strong documentation, bug reporting, and prioritisation skills. Excellent problem-solving, communication, and stakeholder management skills. Personal Attributes More ❯

design Preferred Qualifications: Demonstrated understanding of accessibility standards and inclusive design practices Experience leveraging AI tools for concept generation and prototyping Familiarity with front-end development technologies (HTML, CSS, JavaScript) Experience with data-driven design and A/B testing Expedia Group is proud to offer a wide range of benefits to support employees and their families, including medical/ More ❯

design Preferred Qualifications: Demonstrated understanding of accessibility standards and inclusive design practices Experience leveraging AI tools for concept generation and prototyping Familiarity with front-end development technologies (HTML, CSS, JavaScript) Experience with data-driven design and A/B testing Expedia Group is proud to offer a wide range of benefits to support employees and their families, including medical/ More ❯

bring a balanced approach to technical solutions, focusing on team impact You have an interest in helping people communicate effectively with data You have experience working with TypeScript/JavaScript, Node.js, and some familiarity with AWS infrastructure You previously built API solutions and worked with databases like PostgreSQL You are interested in learning about system observability and reliable services You More ❯