276 to 300 of 2,889 ECMAScript Jobs

Senior Front End Developer

Hiring Organisation
Narwhal Media Group (NMG)
Location
Bristol, UK
Employment Type
Full-time
complex frontend issues across browsers and devices. Qualifications 5+ years professional experience in frontend development with strong expertise in React and Next.js. Proficiency in JavaScript, TypeScript, HTML, CSS, and related tooling. Experience with state management (Redux, Zustand, Recoil, or similar). Strong understanding of responsive design, accessibility, and UI/ ...

Senior Front End Developer

Hiring Organisation
Narwhal Media Group (NMG)
Location
Bath, Somerset, UK
Employment Type
Full-time
complex frontend issues across browsers and devices. Qualifications 5+ years professional experience in frontend development with strong expertise in React and Next.js. Proficiency in JavaScript, TypeScript, HTML, CSS, and related tooling. Experience with state management (Redux, Zustand, Recoil, or similar). Strong understanding of responsive design, accessibility, and UI/ ...

Senior Front End Developer

Hiring Organisation
Narwhal Media Group (NMG)
Location
Bradley Stoke, Gloucestershire, UK
Employment Type
Full-time
complex frontend issues across browsers and devices. Qualifications 5+ years professional experience in frontend development with strong expertise in React and Next.js. Proficiency in JavaScript, TypeScript, HTML, CSS, and related tooling. Experience with state management (Redux, Zustand, Recoil, or similar). Strong understanding of responsive design, accessibility, and UI/ ...

Generative AI Engineer

Hiring Organisation
83zero
Location
City of London, London, United Kingdom
using TypeScript, leveraging frameworks such as Next.js or Vite. GenAI Frameworks: Familiarity with tools like LangChain, LangGraph, CrewAI, or Vercel AI (in Python or JavaScript). LLM experience: Practical experience with Large Language Models (LLMs) such as OpenAI, Anthropic, Mistral, or Llama, and tools like Ollama. Cloud Platforms: Proficiency ...

Generative AI Engineer

Hiring Organisation
83zero
Location
London Area, United Kingdom
using TypeScript, leveraging frameworks such as Next.js or Vite. GenAI Frameworks: Familiarity with tools like LangChain, LangGraph, CrewAI, or Vercel AI (in Python or JavaScript). LLM experience: Practical experience with Large Language Models (LLMs) such as OpenAI, Anthropic, Mistral, or Llama, and tools like Ollama. Cloud Platforms: Proficiency ...

Full Stack Developer

Hiring Organisation
Loopla
Location
North West London, London, United Kingdom
Employment Type
Permanent, Work From Home
Contribute to engineering standards and mentor teammates Experience 5+ years full stack web development experience 3+ years production React 3+ years production Node.js Strong JavaScript/TypeScript skills Experience designing and integrating REST APIs Solid experience with MySQL, Git, Express.js, Tailwind CSS and Next.js Comfort with AWS or GCP High ...

Full-Stack .Net Developer

Hiring Organisation
CPS Group
Location
Bristol, Avon, England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £55,000 per annum
quickly and effectively.Continuously improving code quality through testing, reviews, and best practices.Skills & Experience:- .NET (C#, ASP.NET)- Angular- REST/API Development- SQL Server- TypeScript, JavaScript, HTML, CSS- Strong understanding of Agile delivery (Scrum or Kanban)- Experience with Azure services (e.g. Cosmos DB, Microservices, Docker, NServiceBus)- Familiarity with cloud-native ...

Full-Stack .Net Developer

Hiring Organisation
CPS Group (UK) Limited
Location
Bristol, United Kingdom
Employment Type
Permanent
Salary
£50000 - £55000/annum
effectively. Continuously improving code quality through testing, reviews, and best practices. Skills & Experience: - .NET (C#, ASP.NET) - Angular - REST/API Development - SQL Server - TypeScript, JavaScript, HTML, CSS - Strong understanding of Agile delivery (Scrum or Kanban) - Experience with Azure services (e.g. Cosmos DB, Microservices, Docker, NServiceBus) - Familiarity with cloud-native ...

R&D Tax Manager

Hiring Organisation
Pro-Tax Recruitment
Location
Manchester, Lancashire, England, United Kingdom
Employment Type
Full-Time
Salary
£55,000 - £65,000 per annum
process improvements, and oversee efficient client submissions. To be successful in this role, you'll need: Experience writing/reviewing code in Python, Java, JavaScript, C#, C++, or Go . Knowledge of Agile, DevOps, and modern architecture patterns (microservices, REST APIs). Familiarity with AWS, Azure, or GCP . Experience ...

Front End Software Engineer

Hiring Organisation
Nigel Wright Group
Location
Newcastle Upon Tyne, Tyne and Wear, England, United Kingdom
Employment Type
Full-Time
Salary
£40,000 - £80,000 per annum
highly collaborative environment alongside clients, data and AI analysts, and developers. Technical Requirements: Minimum 3 years’ experience in front-end development. Strong skills in JavaScript and TypeScript. Experience with modern frameworks such as Vue.js or React (other similar frameworks acceptable). Familiarity with automated testing frameworks (e.g., Jest, Cypress). ...

Lead Front-End Developer

Hiring Organisation
ADLIB Recruitment
Location
Exeter, Devon, South West, United Kingdom
Employment Type
Permanent
Salary
£55,000
Exeter office. What skills and experience youll need: Mentoring, coaching experience and ability to lead a small front-end team. Deep expertise in modern JavaScript frameworks (e.g., Vue.js, React, or Angular), happy to work with Vue.js. Proficient in HTML5, CSS3, and responsive design best practices. Experience working with design systems ...

Senior Fullstack Software Engineer

Hiring Organisation
Akkodis
Location
London, United Kingdom
Employment Type
Permanent
Salary
£80000 - £110000/annum
outcomes Experience designing and deploying scalable, observable, and maintainable systems Familiarity with microservices architecture (synchronous and asynchronous) Strong experience with NodeJS, TypeScript/JavaScript, and React Good understanding of cloud platforms (AWS, GCP, Azure) Solid grasp of database technologies and trade-offs Experience with automated testing and web security best ...

Senior Fullstack Software Engineer

Hiring Organisation
Akkodis
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £110,000 per annum
outcomes Experience designing and deploying scalable, observable, and maintainable systems Familiarity with microservices architecture (synchronous and asynchronous) Strong experience with NodeJS, TypeScript/JavaScript, and React Good understanding of cloud platforms (AWS, GCP, Azure) Solid grasp of database technologies and trade-offs Experience with automated testing and web security best ...

Staff React Engineer (TypeScript + AI Experience)

Hiring Organisation
Wizeline
Location
City of London, London, United Kingdom
Vertex AI, Anthropic, or similar). Demonstrated ability to design and implement AI-enhanced interfaces that improve usability, personalization, or automation. Deep understanding of JavaScript (ES6+) , React Hooks, and state management patterns (Redux, Zustand, or Recoil). Proficiency with testing frameworks (Jest, React Testing Library, Cypress) and performance profiling tools. ...

Staff React Engineer (TypeScript + AI Experience)

Hiring Organisation
Wizeline
Location
London Area, United Kingdom
Vertex AI, Anthropic, or similar). Demonstrated ability to design and implement AI-enhanced interfaces that improve usability, personalization, or automation. Deep understanding of JavaScript (ES6+) , React Hooks, and state management patterns (Redux, Zustand, or Recoil). Proficiency with testing frameworks (Jest, React Testing Library, Cypress) and performance profiling tools. ...

Staff React Engineer (TypeScript + AI Experience)

Hiring Organisation
Wizeline
Location
Slough, Berkshire, UK
Employment Type
Full-time
Vertex AI, Anthropic, or similar). Demonstrated ability to design and implement AI-enhanced interfaces that improve usability, personalization, or automation. Deep understanding of JavaScript (ES6+), React Hooks, and state management patterns (Redux, Zustand, or Recoil). Proficiency with testing frameworks (Jest, React Testing Library, Cypress) and performance profiling tools. ...

Full Stack Engineer

Hiring Organisation
Experis UK
Location
England, United Kingdom
hold (or be willing to obtain) UK security clearance to Developed Vetting (DV) level. Essential skills: Proficient in modern front-end technologies: HTML5, CSS3, JavaScript, and frameworks like React, Angular, or Vue.js. Strong skills in server-side logic using languages such as Node.js, Python, or Java. Experience with both ...

Lead Software Developer in Test

Hiring Organisation
TEN10 SOLUTIONS LIMITED
Location
South East London, London, United Kingdom
Employment Type
Permanent, Work From Home
/testing roles, with experience guiding teams and managing delivery in Agile environments (SCRUM, Kanban). Strong programming skills in Java, C#, JavaScript/TypeScript, or similar. Deep expertise in test automation frameworks such as Selenium, Playwright, Cypress, or RestAssured. Experience with integration testing, test strategy, and test architecture ...

Sr. Cybersecurity Software Engineer - Secret Clearance Required

Hiring Organisation
Lockheed Martin
Location
Omaha, Nebraska, United States
Employment Type
Permanent
Salary
USD Annual
Experience integrating cybersecurity tool chains in a CI/CD environment. - Familiarity with development tooling VS Code, GitLab, Gradle, GIT, Selenium, JIRA - Experience with JavaScript Frameworks/Libraries (React/Angular/Vue), CSS, and HTML - Experience with Web Services (REST) or JSON/XML. Security Clearance Statement: This position ...

Staff Software Engineer

Hiring Organisation
Lockheed Martin
Location
Gloucester, Gloucestershire, UK
Employment Type
Full-time
exciting journey of innovation and growth. What skills will I need? Expert knowledge of current Java. Proficient in another language such as Python, C++, JavaScript, TypeScript, React. Experience of developing on Linux. Advanced understanding of mocking and unit testing frameworks such as JUnit 5.x (Jupiter). Expert with Git version ...

Staff Software Engineer

Hiring Organisation
Lockheed Martin
Location
Brockworth, Gloucestershire, UK
exciting journey of innovation and growth. What skills will I need? Expert knowledge of current Java. Proficient in another language such as Python, C++, JavaScript, TypeScript, React. Experience of developing on Linux. Advanced understanding of mocking and unit testing frameworks such as JUnit 5.x (Jupiter). Expert with Git version ...

Staff Software Engineer

Hiring Organisation
Lockheed Martin
Location
Brockworth, England, United Kingdom
exciting journey of innovation and growth. What skills will I need? Expert knowledge of current Java. Proficient in another language such as Python, C++, JavaScript, TypeScript, React. Experience of developing on Linux. Advanced understanding of mocking and unit testing frameworks such as JUnit 5.x (Jupiter). Expert with Git version ...

Senior Software Engineer

Hiring Organisation
Lockheed Martin
Location
Gloucester, Gloucestershire, UK
Employment Type
Full-time
exciting journey of innovation and growth. What skills will I need? Proficient in current Java, knowledge of other languages such as Python, C++, JavaScript, TypeScript, React is a bonus. Experience of developing on Linux. Thorough understanding of mocking and unit testing frameworks such as JUnit 5.x (Jupiter). Experienced with ...

Senior Software Engineer

Hiring Organisation
Lockheed Martin
Location
Brockworth, Gloucestershire, UK
Employment Type
Full-time
exciting journey of innovation and growth. What skills will I need? Proficient in current Java, knowledge of other languages such as Python, C++, JavaScript, TypeScript, React is a bonus. Experience of developing on Linux. Thorough understanding of mocking and unit testing frameworks such as JUnit 5.x (Jupiter). Experienced with ...

Senior Software Engineer

Hiring Organisation
Lockheed Martin
Location
Brockworth, England, United Kingdom
exciting journey of innovation and growth. What skills will I need? Proficient in current Java, knowledge of other languages such as Python, C++, JavaScript, TypeScript, React is a bonus. Experience of developing on Linux. Thorough understanding of mocking and unit testing frameworks such as JUnit 5.x (Jupiter). Experienced with ...