76 to 100 of 1,328 ECMAScript Jobs in London

API's: Go, Rest, CDK. AWS- CDK, Lambda, API Gateway, Dynamo DB, Event Bridge, S3, Severless and event driven architecture Platforms: Go, CDK, AWS Skills and experience: -Proficient in JavaScript and ideally familiar with Go , with a strong enthusiasm for learning and applying new technologies beyond the Java ecosystem -Comfortable working in modern engineering environments , including Agile methodologies, DevOps practices More ❯

and an ability to deliver innovative solutions that align with business objectives. Experience Requirements Software Development & Principles Programming Languages: Proficiency in one or more of: Java, Spring Boot, Python, JavaScript, TypeScript, ReactJS SOLID Principles: Familiarity with object-oriented and clean coding practices Testing & BDD Unit Testing Frameworks: Experience with Cypress, Cucumber, Behave, Selenium, or similar tools Domain-Specific Languages: Knowledge More ❯

While we advocate for using the right tech for the right task, you can expect to work with the following technologies to ensure scalable, high-performance applications: Programming Languages: JavaScript/TypeScript, Java, C# Frameworks: Vue/Angular/React/Node/Next, Spring/Spring Boot, .NET/ASP.NET Cloud platforms: AWS, GCP, Azure CI/CD:Jenkins More ❯

While we advocate for using the right tech for the right task, you can expect to work with the following technologies to ensure scalable, high-performance applications: Programming Languages: JavaScript/TypeScript, Java, C# Frameworks: Vue/Angular/React/Node/Next, Spring/Spring Boot, .NET/ASP.NET Cloud platforms: AWS, GCP, Azure CI/CD:Jenkins More ❯

Jira/Rally, CI/CD tools such as Jenkins, Azure DevOps Automated Testing experience including Unit test development and Integration test development Web Programing experience including HTML, CSS, JavaScript Knowledge of Agile & Software Development Best Practices including code scanning and remediation Preferred Qualifications: Degree in computer science Experience working in a MHRA regulated environment Experience with IAAS/PAAS More ❯

team; offering mentoring and support to your team-mates. Who are you Highly skilled and proficient coding in PHP, with strong skills in adjacent areas such as TypeScript, React, JavaScript or Python. A desire and willingness to learn other languages in particular Go Proving technical leadership and direction to your team and contributing to the wider engineering organisation. Deep technical More ❯

collaborative development . Energized by fast-paced, regulated environments where speed, quality, and adaptability matter. Your Technical Toolkit React/React Native/TypeScript Swift (iOS)/Kotlin (Android) JavaScript/HTML/CSS Figma/Vercel/Git Testing frameworks : Jest, Cypress, XCTest, Espresso CI/CD pipelines : GitHub Actions, CircleCI, Bitrise Cloud basics : AWS, Docker, K8s (exposure preferred More ❯

collaboration abilities. Ability to work independently and in a team environment. Strong attention to detail and dedication to delivering high-quality work. Experience with front-end technologies (HTML, CSS, JavaScript). Experience with version control systems (e.g., Git is preferred). Hold current SC-level security clearance (preferable). Be able to gain SC-level security clearance (mandatory). Triad More ❯

collaboration abilities. Ability to work independently and in a team environment. Strong attention to detail and dedication to delivering high-quality work. Experience with front-end technologies (HTML, CSS, JavaScript). Experience with version control systems (e.g., Git is preferred). Hold current SC-level security clearance (preferable). Be able to gain SC-level security clearance (mandatory). Triad More ❯

Relevant Experience: React.Js, Typescript, Azure Job Description: Proven experience as a Front-End Developer with a focus on React.js, and Typescript. Familiarity with C# and .Net. Strong proficiency in JavaScript, ES6/ES7, and related front-end technologies. Familiarity with state management libraries such as Redux. Experience with version control systems, such as Git. Experience with the Web Content Accessibility More ❯

GitLab, and Jira. Essential Skills: 2+ years of Python experience in a commercial environment, with strong asynchronous programming skills 2+ years of frontend development experience with React and modern JavaScript/TypeScript Demonstrated ability to build and maintain polished, responsive user interfaces Experience with REST APIs and modern web frameworks, such as FastAPI Practical experience with PostgreSQL or similar relational More ❯

.NET 6+ Familiarity with REST APIs and SQL databases Understanding of core programming concepts (OOP, data structures, debugging) Eagerness to learn cloud technologies such as AWS Basic exposure to JavaScript or front-end frameworks Experience with CI/CD tools (GitHub Actions, Azure DevOps, etc.) Annual bonus and full benefits package Hybrid working 2 days per week in the London More ❯

with version control systems, preferably Git . Understanding of Agile/Scrum methodologies. Desirable Skills: Experience with cloud platforms (AWS, Azure, or GCP). Knowledge of front-end technologies (JavaScript, Angular, React). Familiarity with CI/CD pipelines and DevOps practices. What We Offer: Competitive salary up to £80,000. Hybrid working with 3 days in the London office. More ❯

with version control systems, preferably Git . Understanding of Agile/Scrum methodologies. Desirable Skills: Experience with cloud platforms (AWS, Azure, or GCP). Knowledge of front-end technologies (JavaScript, Angular, React). Familiarity with CI/CD pipelines and DevOps practices. What We Offer: Competitive salary up to £80,000. Hybrid working with 3 days in the London office. More ❯

some experience with Docker/Kubernetes, EKS You have a good understanding of CQRS and event driven architectures Ideally you will also have some front end development experience with JavaScript/TypeScript/React.js or Angular You have strong analytical and problem solving skills You're collaborative with excellent communication skills What's in it for you: As a Backend More ❯

some experience with Docker/Kubernetes, EKS You have a good understanding of CQRS and event driven architectures Ideally you will also have some front end development experience with JavaScript/TypeScript/React.js or Angular You have strong analytical and problem solving skills You're collaborative with excellent communication skills What's in it for you: As a Backend More ❯

with version control systems, preferably Git . Understanding of Agile/Scrum methodologies. Desirable Skills: Experience with cloud platforms (AWS, Azure, or GCP). Knowledge of front-end technologies (JavaScript, Angular, React). Familiarity with CI/CD pipelines and DevOps practices. What We Offer: Competitive salary up to £80,000. Hybrid working with 3 days in the London office. More ❯

with version control systems, preferably Git . Understanding of Agile/Scrum methodologies. Desirable Skills: Experience with cloud platforms (AWS, Azure, or GCP). Knowledge of front-end technologies (JavaScript, Angular, React). Familiarity with CI/CD pipelines and DevOps practices. What We Offer: Competitive salary up to £80,000. Hybrid working with 3 days in the London office. More ❯

support model risk infrastructure and analytics. Integrate front-end components with Django-based back-end systems and RESTful APIs. Develop responsive and intuitive user interfaces using React and related JavaScript frameworks. Collaborate with cross-functional teams; data engineers, UX designers, and infrastructure specialists-to deliver cohesive, reliable solutions. Ensure application performance, scalability, and maintainability through best practices in coding, testing More ❯

who thrives in fast-paced, high-growth environments. What You’ll Bring 5+ years of experience building large-scale, production-grade web applications. Strong proficiency with React, TypeScript/JavaScript, HTML, and CSS . Proven experience with C#, .NET Core , and SQL-based databases . Understanding of Design Patterns and SOLID principles . Experience designing and consuming RESTful APIs . More ❯

who thrives in fast-paced, high-growth environments. What You’ll Bring 5+ years of experience building large-scale, production-grade web applications. Strong proficiency with React, TypeScript/JavaScript, HTML, and CSS . Proven experience with C#, .NET Core , and SQL-based databases . Understanding of Design Patterns and SOLID principles . Experience designing and consuming RESTful APIs . More ❯

who thrives in fast-paced, high-growth environments. What You’ll Bring 5+ years of experience building large-scale, production-grade web applications. Strong proficiency with React, TypeScript/JavaScript, HTML, and CSS . Proven experience with C#, .NET Core , and SQL-based databases . Understanding of Design Patterns and SOLID principles . Experience designing and consuming RESTful APIs . More ❯

who thrives in fast-paced, high-growth environments. What You’ll Bring 5+ years of experience building large-scale, production-grade web applications. Strong proficiency with React, TypeScript/JavaScript, HTML, and CSS . Proven experience with C#, .NET Core , and SQL-based databases . Understanding of Design Patterns and SOLID principles . Experience designing and consuming RESTful APIs . More ❯

programming concepts (OOP, data structures, debugging) Eagerness to learn cloud technologies such as AWS A collaborative mindset and attention to detail Nice to have (not essential): Basic exposure to JavaScript or front-end frameworks Experience with CI/CD tools (GitHub Actions, Azure DevOps, etc.) Familiarity with Docker or containerization concepts What’s on Offer Salary up to More ❯

programming concepts (OOP, data structures, debugging) Eagerness to learn cloud technologies such as AWS A collaborative mindset and attention to detail Nice to have (not essential): Basic exposure to JavaScript or front-end frameworks Experience with CI/CD tools (GitHub Actions, Azure DevOps, etc.) Familiarity with Docker or containerization concepts What’s on Offer Salary up to More ❯