226 to 250 of 2,115 ECMAScript Jobs in London

you can explore what motivates and energizes your career goals: partnering with our customers, our communities, and each other. Job Description Senior Full Stack Developer/Engineering Lead – .NET & JavaScript US Bank are hiring a Senior Full Stack Developer who can design, develop, and lead the creation of top-notch internal tools and platforms. This role is perfect for someone … teams, and senior stakeholders to shape systems used daily by hundreds of users. Key Responsibilities Design and build robust full-stack applications using the Microsoft stack (.NET Core, C#, JavaScript, EF) Architect and develop dynamic, configurable web-based platforms for internal business users Implement data visualization and reporting tools (D3.js, ECharts) to replace inefficient EUC solutions Create APIs and background … training, and continuous improvement cycles Ideal Candidate Will Have: 10+ years in software engineering with experience across the full stack Deep hands-on expertise with C#, .NET Core, ASP.NET, JavaScript, EF (EF6 and EF Core) Experience building internal platforms or tools used by non-technical business users Strong frontend skills: JavaScript, HTML, CSS, Bootstrap, D3.js or similar libraries Experience with More ❯

7 years’ experience with cloud technologies, Azure, AWS, etc. (Mandatory) find out it Azure or is it AWS 7 years minimum in .NET Core, API , C#, and microservices development with tangible projects to reference for their work (Must have hands More ❯

7 years’ experience with cloud technologies, Azure, AWS, etc. (Mandatory) find out it Azure or is it AWS 7 years minimum in .NET Core, API , C#, and microservices development with tangible projects to reference for their work (Must have hands More ❯

At Atominvest, we build tools and software for the world's best investors. Are you looking for an opportunity to be part of a high growth software business within the private equity & venture capital industry? Do you love to build More ❯

Social network you want to login/join with: col-narrow-left Client: Atominvest Software Location: London, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Reference: 0178dc215d7b Job Views: 32 Posted: 22.06.2025 Expiry Date More ❯

Lead Engineer – NodeJS Developer Salary: Up to £100000 + Benefits + Bonus NodeJS, JavaScript, TypeScript, React Framework, AWS, Kubernetes, Docker, Digital Investments. SQL, Harrington Starr has partnered with an innovative Digital Currency Investment Platform Company that specialise in developing unique software systems for clients for invest into Digital Markets from Pensions, Investments and Fund Management. This is an exciting opportunity … to join a small team within a large organisation and get the experience to utilise the JavaScript ecosystem. This organisation are developing cutting edge web-systems, which are being used globally and are offering the opportunity for you to play a pivotal role within the full software development life cycle. We are looking for an experienced Full Stack Engineer with … NodeJS, JavaScript, TypeScript and NodeJS and including cloud technologies. You will have a degree in computer science from a reputable University and have a good understanding of JavaScript TypeScript and React Framework. Key requirements within this opportunity are as follows: Experience with NodeJS Solid experience with JavaScript and TypeScript Experience with Azure Cloud Experience with Kubernetes and Docker. Any experience More ❯

Lead Engineer – NodeJS Developer Salary: Up to £100000 + Benefits + Bonus NodeJS, JavaScript, TypeScript, React Framework, AWS, Kubernetes, Docker, Digital Investments. SQL, Harrington Starr has partnered with an innovative Digital Currency Investment Platform Company that specialise in developing unique software systems for clients for invest into Digital Markets from Pensions, Investments and Fund Management. This is an exciting opportunity … to join a small team within a large organisation and get the experience to utilise the JavaScript ecosystem. This organisation are developing cutting edge web-systems, which are being used globally and are offering the opportunity for you to play a pivotal role within the full software development life cycle. We are looking for an experienced Full Stack Engineer with … NodeJS, JavaScript, TypeScript and NodeJS and including cloud technologies. You will have a degree in computer science from a reputable University and have a good understanding of JavaScript TypeScript and React Framework. Key requirements within this opportunity are as follows: Experience with NodeJS Solid experience with JavaScript and TypeScript Experience with Azure Cloud Experience with Kubernetes and Docker. Any experience More ❯

Job Description REMOTE Golang Developer (Software Engineer Programmer Developer ReactJS React-JS React.JS GraphQL Playwright TypeScript Redux Saga Ag-Grid Fixed Income JavaScript Node Credit Rates Bonds Agile Buy Side Asset Manager Investment Management Finance Front Office Trading Financial Services UI Front End Front End EMS OMS Execution Order Management System Portfolio Golang Go Java AWS Kafka) required by our … order management, risk or PnL analysis) Strong ability to lead and take concepts and ideas into technical solutions Excellent stakeholder interaction skills Agile The following is DESIRABLE, not essential: JavaScript and TypeScript Ag-Grid and GraphQL Python or Java Role: REMOTE Golang Developer (Software Engineer Programmer Developer ReactJS React-JS React.JS GraphQL Playwright TypeScript Redux Saga Ag-Grid Fixed Income … JavaScript Node Credit Rates Bonds Agile Buy Side Asset Manager Investment Management Finance Front Office Trading Financial Services UI Front End Front End EMS OMS Execution Order Management System Portfolio Golang Go Java AWS Kafka) required by our trading software client in London. You will be leading two small teams to build a new multi-asset portfolio management system. The More ❯

environment where autonomy and technical input are both valued and encouraged. What you’ll be working with: PHP (Laravel) and MVC frameworks MySQL Backend API development (REST) HTML, CSS, JavaScript, Bootstrap Vue.js or similar JavaScript frameworks Azure DevOps, CI/CD pipelines Linux-based environments What we’re looking for: 3–6 years’ experience in a full stack or back … end developer role Strong professional background with PHP, Laravel, and MySQL Skilled in HTML, CSS, JavaScript, and modern frontend frameworks Familiar with cloud-based tools and version control using Azure DevOps Comfortable working both autonomously and within a collaborative team Proactive, consultative approach to problem-solving Nice to have: Experience with React, Node.js, Angular, or additional modern JS frameworks This More ❯

environment where autonomy and technical input are both valued and encouraged. What you’ll be working with: PHP (Laravel) and MVC frameworks MySQL Backend API development (REST) HTML, CSS, JavaScript, Bootstrap Vue.js or similar JavaScript frameworks Azure DevOps, CI/CD pipelines Linux-based environments What we’re looking for: 3–6 years’ experience in a full stack or back … end developer role Strong professional background with PHP, Laravel, and MySQL Skilled in HTML, CSS, JavaScript, and modern frontend frameworks Familiar with cloud-based tools and version control using Azure DevOps Comfortable working both autonomously and within a collaborative team Proactive, consultative approach to problem-solving Nice to have: Experience with React, Node.js, Angular, or additional modern JS frameworks This More ❯

Lead Frontend Engineer – Credit Trading, Investment Banking, Agile, UI, React, TypeScript, JavaScript – Permanent, Hybrid, up to £125,000 base Our client, a leading global financial institution, is seeking a highly skilled Lead Frontend Engineer to join its Credit Technology team in London. This role will be responsible for leading critical UI initiatives within a global technology team, driving development projects … Credit Flow business. • Contribute to strategic UI architecture development and infrastructure improvements. • Ensure the trading platform adheres to security and compliance standards. Key Skills & Experience: • Strong proficiency in TypeScript, JavaScript, React, HTML/CSS, Node.js. • Familiarity with backend technologies such as Java 8, Vert.x, Linux. • JIRA, Confluence, Git, NPM, Yarn, Webpack, TeamCity/Jenkins, Artifactory. • Demonstrable experience running a development More ❯

develop high-quality software solutions Build and maintain scalable C#/.NET 8.0 applications and APIs Champion best coding practices, including SOLID principles Work with modern front-end technologies ( JavaScript, TypeScript, React, Angular ) Configure workflows and collaborate with stakeholders Conduct code reviews and uphold development standards Support and mentor junior developers Tech Stack: C#/ASP.NET Core/.NET 8.0 … Microsoft SQL Server JavaScript, TypeScript, HTML, CSS Front End Frameworks (React/Angular) Git, Entity Framework SOLID programming principles & design patterns Benefits: 26 days holiday (ability to purchase additional days) Financial wellbeing benefits Access to countless on-demand courses Health & wellbeing perks If you’re a Senior Software Engineer looking for an exciting new opportunity in a dynamic and innovative More ❯

Graduate .NET Developer - Investment Bank - London (Tech stack: Graduate .NET Developer, .NET 9, C#, Azure, Angular 19, Multithreading, RESTful, Web API 2, JavaScript, Programmer, Full Stack Engineer, Architect) Our client is the world's most respected banking institution. Their story dates back to the 1890s and today they operate from over 10,000 offices in 100 countries. Working in tandem …/ASP.NET MVC, C# or C#.NET winforms) and Azure SQL. Our client offers training in: .NET 9, Azure, Angular 19, Solid, DRY, LINQ, multithreading, Microservices, RESTful, Web API 2, JavaScript, HTML5, Agile, and MongoDB. This is a truly amazing opportunity to work for a prestigious banking brand that will do wonders for your CV. They invest heavily in training and More ❯

Graduate .NET Developer - Investment Bank - London (Tech stack: Graduate .NET Developer, .NET 9, C#, Azure, Angular 19, Multithreading, RESTful, Web API 2, JavaScript, Programmer, Full Stack Engineer, Architect, Graduate .NET Developer) Our client is the world's most respected banking institution. Their story dates back to the 1890s and today they operate from over 10,000 offices in 100 countries. …/ASP.NET MVC, C# or C#.NET winforms) and Azure SQL. Our client offers training in: .NET 9, Azure, Angular 19, Solid, DRY, LINQ, multithreading, Microservices, RESTful, Web API 2, JavaScript, HTML5, Agile and MongoDB. This is a truly amazing opportunity to work for a prestigious banking brand that will do wonders for your CV. They invest heavily in training and More ❯

enjoying what the world has to offer. ABOUT THE ROLE Tech Stack Backend: AWS Lambda, API Gateway, DynamoDB, S3, Node.js Frontend: React/Next.js, React Native Programming Languages: TypeScript; JavaScript, Python Infrastructure: Terraform, GitHub CI/CD pipelines Responsibilities Design, develop, and maintain advanced applications using React Native. Collaborate with cross-functional teams to define, design, and ship new features. … Android platforms, having a deep understanding of the ecosystem differences. Familiarity with RESTful APIs and mobile libraries for networking. Experience with performance and memory tuning tools. Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model. Experience with automated testing suites, like Jest or Mocha. Excellent problem-solving skills and the ability to think algorithmically. Experience with cloud More ❯

enjoying what the world has to offer. ABOUT THE ROLE Tech Stack Backend: AWS Lambda, API Gateway, DynamoDB, S3, Node.js Frontend: React/Next.js, React Native Programming Languages: TypeScript; JavaScript, Python Infrastructure: Terraform, GitHub CI/CD pipelines Responsibilities Design, develop, and maintain advanced applications using React Native. Collaborate with cross-functional teams to define, design, and ship new features. … Android platforms, having a deep understanding of the ecosystem differences. Familiarity with RESTful APIs and mobile libraries for networking. Experience with performance and memory tuning tools. Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model. Experience with automated testing suites, like Jest or Mocha. Excellent problem-solving skills and the ability to think algorithmically. Experience with cloud More ❯

located across from Guildford Mall, in Surrey, BC. Whatyou will do Lead the design and development of beautiful, snappy, and native-feeling UI experiences usingReact, Next.js, Redux, and modern JavaScript/TypeScript. Provide significant architectural oversight for frontend applications, making key decisions on frameworks, patterns, and tooling. Mentor and guide junior and mid-level frontenddevelopers, fostering their technical growth and … quality, testing (React Testing Library, Jest, etc.), accessibility, and maintainability. Drive improvements and innovation in ourfrontend architecture, tooling (NPM, Webpack, Vite), and development processes. Technologies We Use Languages & Frameworks: JavaScript (ES6+), TypeScript, React, Next.js, Redux, HTML5, CSS3/SCSS Testing: React Testing Library, Jest, Cypress (or similar) Build & Tooling: NPM, Webpack, Vite (or similar modernbundlers), Babel DevOps & Tools: AWS (S3 … from Grails/Java services) Qualifications Must haves: 5-7+ years of proven track record in frontend development, with a strongportfolio of building complex, scalable web applications using JavaScript, CSS, and HTML. Expert-level experience with React, Next.js, and state management libraries like Redux. Proficient with React Testing Library, Jest, or similarfrontend testing frameworks. Demonstrated ability to lead technical More ❯

C# and LINQ, Experience of developing web services/RESTful APIs using ASP.NET, WinForms desirable, Source Control (Git) Miscellaneous Experience with RabbitMQ (or other messaging technologies). Web/JavaScript, Solid experience developing SPA applications with Angular, experience with HTML, CSS and JavaScript/Typescript Database SQL (MS SQL Server preferred) Experience of designing database tables/views, writing SQL More ❯

optimize RESTful and GraphQL APIs to facilitate AI-driven interactions. Utilize AWS services (Lambda, S3, API Gateway, SageMaker, DynamoDB, ECS, etc.) to deploy scalable AI solutions. Implement Full Stack JavaScript (Node.js, React.js, Express, TypeScript, Next.js, etc.) applications to support AI-driven interfaces. Work closely with data scientists and ML engineers to integrate machine learning models into cloud-native applications. Ensure … in solution architecture with a focus on AI, APIs, and cloud technologies. Strong hands-on experience with AWS services related to AI/ML and serverless computing. Proficiency in JavaScript, TypeScript, Node.js, React.js, and Express.js for building full-stack applications. Experience with AI/ML frameworks such as TensorFlow, PyTorch, OpenAI API, or LangChain. Knowledge of microservices architecture, containerization (Docker More ❯

and efficiency. TECH PROFILE/ESSENTIAL SKILLS • 3-5 years of technical experience. • 3+ years of hands-on experience with Retool application development. • Proficient in writing efficient and scalable JavaScript code. • Solid experience with API integrations and managing databases. • Good understanding of UI/UX design principles and application performance optimisation. • Strong problem-solving skills and attention to detail. • Excellent … layout of web pages. • CSS (Cascading Style Sheets): Strong knowledge of CSS is essential for styling web pages, controlling typography, colors, and layouts, and ensuring a visually appealing design. • JavaScript: Mastery of JavaScript is crucial for adding interactivity, functionality, and dynamic features to web pages. This includes using libraries like jQuery and modern JavaScript frameworks like React, Angular, or Vue.js. … Ensuring that web applications work consistently across different web browsers and platforms, with the ability to debug and address compatibility issues. • Proficiency in using browser developer tools to debug JavaScript, CSS, and HTML issues and conduct testing for functionality and usability. • Familiarity Build Tools and Task Runners. • Integrating with various APIs (Application Programming Interfaces) to fetch and display data from More ❯

first class STEM degree and at least AAB at A Level (or equivalent) Must be proficient in either TypeScript or React Other highly relevant technologies which would be beneficial: JavaScript, Vue, Node, Yarn, Kotlin, Swift Strong problem-solving ability Natural ability to quickly pick up and learn new technologies Responsibilities for Front-End Software Developer Design and refine user interfaces … of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. Keywords – Computer Science/C/Java/Python/C#/JavaScript/Go/Golang/Kotlin/Docker/Programmer/Test Engineer/Software Engineer/Software Developer/Programming/Coding/programmer/Coder Ph.D./Mathematics More ❯

s not essential to have knowledge of everything or the specific tooling listed: Highly experienced and good working knowledge across the following technologies: Languages : .NET Core, C#, NodeJS/JavaScript, Development Environments: Visual Studio, SQL Server management studio, Oracle Developer Databases: MongoDB, ElasticSearch, Oracle, SQL Server Frameworks/Libraries/Tools - solid experience across the following: Deployment: Containerisation tools such … as; Docker, Ansible or Kubernetes Understanding of Azure or Cloud Services Communication: Messaging (RabbitMQ), REST Web Services Workflow: WF GUI: JavaScript Office Automation: VSTO, Aspose.Words, Aspose.Excel Testing/CI : XUnit, MOQ, SpecFlow, TeamCity Deployment: Octopus/Azure DevOps Methodologies: experience of working on Agile projects Good understanding of SOA/Microservices based architectures Good understanding of OOP, SOLID principles and More ❯

optimize RESTful and GraphQL APIs to facilitate AI-driven interactions. Utilize AWS services (Lambda, S3, API Gateway, SageMaker, DynamoDB, ECS, etc.) to deploy scalable AI solutions. Implement Full Stack JavaScript (Node.js, React.js, Express, TypeScript, Next.js, etc.) applications to support AI-driven interfaces. Work closely with data scientists and ML engineers to integrate machine learning models into cloud-native applications. Ensure … in solution architecture with a focus on AI, APIs, and cloud technologies. Strong hands-on experience with AWS services related to AI/ML and serverless computing. Proficiency in JavaScript, TypeScript, Node.js, React.js, and Express.js for building full-stack applications. Experience with AI/ML frameworks such as TensorFlow, PyTorch, OpenAI API, or LangChain. Knowledge of microservices architecture, containerization (Docker More ❯

performant manner while mentoring your peers to do the same. We are a supportive, close-knit team following Agile Scrum methodologies. We use modern common and boutique technologies like JavaScript, TypeScript, React, Next.js, Clojure(Script), Playwright, Docker, and AWS. The ideal candidate is an exceptional JavaScript/Typescript developer with deep web development experience, well-formed opinions, an obsession with … likely have: Required Skills: Ability to self-direct Demonstrated ability to turn a brief into well designed technical solution Deep knowledge and opinions around full stack development in the Javascript/Typescript ecosystem Keeping up on modern full stack technologies, tools, frameworks, and languages Passion for writing clean, maintainable, well tested code Solid understanding of Typscript, Node.js, and React Infrastructure More ❯

for new business requirements and strategic development of UI architecture and infrastructure Ensuring our credit trading platform meets all the security and audit requirements Your skills and experience Typescript, JavaScript, React, HTML/CSS, NodeJS, Java 8, Vert.x, Linux Jira, Confluence, Git, NPM, Yarn, Webpack, Teamcity/Jenkins, Artifactory Understanding of working in an Agile/DevOps environment Experience working More ❯