Permanent 'ECMAScript' Job Vacancies

701 to 725 of 2,536 Permanent ECMAScript Jobs

Frontend Developer - React.js - Warwickshire - Permanent

Leamington Spa, Warwickshire, Royal Leamington Spa, United Kingdom
Hybrid / WFH Options
Crimson
design and development of scalable UI interfaces relating to AI-powered automation products and solutions. Key skills & responsibilities: Skilled in designing and building responsive, high-performance applications using React.js, JavaScript (ES6+), HTML5, and CSS3. Experienced in integrating RESTful APIs and collaborating with back-end teams to ensure seamless data flow. Proficient in creating reusable, modular components with scalable and maintainable More ❯
Employment Type: Permanent
Salary: £55000 - £65000/annum
Posted:

Senior PHP Developer

stockport, north west england, united kingdom
Xpertise Recruitment
reviews, and architectural planning for exciting ecommerce innovations. Managing API integrations and optimising database performance. What You'll Need Strong experience with PHP 8 and Laravel 10+ Proficiency with JavaScript frameworks , ) Docker, containers, and Linux expertise Solid experience with Git and MySQL RESTful API design and integration knowledge Bonus Skills Familiarity with queueing mechanisms and distributed task processing Experience integrating More ❯
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Senior Front End Developer

Manchester, Lancashire, England, United Kingdom
Hybrid / WFH Options
Lorien
architecture beyond just the UI layer is essential. The Skill Requirements: We're looking for candidates with a blend of the following: Strong commercial experience with HTML, CSS and JavaScript Deep expertise in ReactJS and frontend architecture Comfortable working with Git and source control workflows Agile delivery experience and solid understanding of software design principles Strong communication skills and a More ❯
Employment Type: Full-Time
Salary: £60,000 - £65,000 per annum
Posted:

Software Engineer £60k benefits

Manchester, Lancashire, England, United Kingdom
Hybrid / WFH Options
Interquest
would suit someone looking for a high-impact role in a fast-growing SaaS company where you’ll be given real responsibility from day one. Skills: C#, .NET, APIs JavaScript, TypeScript, Angular SQL Server Azure Functions (inc. serverless) The money is good too – up to £60k plus benefits including share options, 5% matched salary, up to 30 days holiday and More ❯
Employment Type: Full-Time
Salary: £50,000 - £60,000 per annum
Posted:

Generative Ai Developer

London, South East, England, United Kingdom
Hybrid / WFH Options
Stealth IT
/Managerial experience as a GenAi Developer/Python (With commercial GenAi FS experience) Python - FastAPI Typescript, React, Next.js or Vite LangChain, LangGraph, CrewAI, or Vercel AI (Python or JavaScript) LLM platforms: OpenAI, Anthropic, Mistral, or Llama AWS or Azure Your Responsibilities: Collaborate with the development team to build a comprehensive knowledge pool of GenAI technologies Develop innovative POCs for More ❯
Employment Type: Full-Time
Salary: £55,000 - £88,000 per annum
Posted:

Azure AI Engineer

United Kingdom
Hybrid / WFH Options
Cognitive Group | Part of the Focus Cloud Group
understanding of Azure AI ecosystem (OpenAI, Cognitive Services, AI Search, Synapse, Fabric). Experience integrating AI into Dynamics 365, Power Platform, or custom web apps . Background in C#, JavaScript/TypeScript , or equivalent for building and extending web or Power Apps solutions. Knowledge of Azure DevOps, CI/CD, and Infrastructure-as-Code (Bicep, Terraform). Deep appreciation of More ❯
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Full Stack Engineer

Manchester Area, United Kingdom
Hybrid / WFH Options
numi
take ownership of features end-to-end, contribute ideas, and grow within a fast-moving engineering environment. Key Responsibilities Design, build, and maintain web applications and APIs using modern JavaScript frameworks. Collaborate with cross-functional teams to translate requirements into technical solutions. Write clean, testable, and maintainable code with a focus on performance and reliability. Participate in code reviews, testing More ❯
Posted:

Senior Software Engineer

United Kingdom
Hybrid / WFH Options
Innova Recruitment
someone comfortable across the full stack would be hugely desirable. As one of twelve developers, everyone has a voice and everyone has a contribution to make. Core tech stack: JavaScript/TypeScript, Node, Express, React, AWS What we are looking for: Strong software engineering experience (that probably looks like 5-6 years plus but we're not going to be More ❯
Posted:

Junior API Developer

Alderley Edge, England, United Kingdom
MRJ Recruitment
What You’ll Bring: A year + experience in an API or integration-focused role. Strong understanding of REST APIs, authentication, JSON/XML. Hands-on experience in Python, JavaScript, or C#. Logical thinker who enjoys problem-solving and working independently. Based in the UK without visa/sponsorship requirements Bonus points for: Exposure to AWS, Azure, or GCP. Familiarity More ❯
Posted:

Power Platform Developer

London Area, United Kingdom
Intec Select
Strong experience integrating and extending D365 F&O , including basic X++ development Proficiency in Azure Functions , Azure AI models , and other Azure services Strong command of SQL , Power Fx , JavaScript , JSON , and C# Familiarity with tools such as Visual Studio , Git , Azure DevOps , or Monday Dev Qualifications Degree in Computer Science, Information Technology, or related field Certifications such as PL More ❯
Posted:

Power Platform Developer

City of London, London, United Kingdom
Intec Select
Strong experience integrating and extending D365 F&O , including basic X++ development Proficiency in Azure Functions , Azure AI models , and other Azure services Strong command of SQL , Power Fx , JavaScript , JSON , and C# Familiarity with tools such as Visual Studio , Git , Azure DevOps , or Monday Dev Qualifications Degree in Computer Science, Information Technology, or related field Certifications such as PL More ❯
Posted:

Senior Front End Developer

Abingdon, Oxfordshire, England, United Kingdom
Hybrid / WFH Options
Spectrum IT Recruitment
5+ years' experience in enterprise level front-end web development: Solid understanding of semantic mark-up, including HTML5, CSS3 (comfortable with CSS animations and flexbox). Extensive ReactJS experience JavaScript, TypeScript Ability to mentor junior staff Code reviews and technical guidance. Degree level education in an engineering/software in beneficial Good understanding of asynchronous request handling, partial page updates. More ❯
Employment Type: Full-Time
Salary: £65,000 - £75,000 per annum
Posted:

Senior Front End Developer

Southmoor, Oxfordshire, United Kingdom
Hybrid / WFH Options
Spectrum IT Recruitment
5+ years' experience in enterprise level front-end web development: Solid understanding of semantic mark-up, including HTML5, CSS3 (comfortable with CSS animations and flexbox). Extensive ReactJS experience JavaScript, TypeScript Ability to mentor junior staff Code reviews and technical guidance. Degree level education in an engineering/software in beneficial Good understanding of asynchronous request handling, partial page updates. More ❯
Employment Type: Permanent
Salary: GBP 65,000 - 75,000 Annual
Posted:

Front End Developer

Manchester, Lancashire, England, United Kingdom
Hybrid / WFH Options
Lorien
testing and validation throughout the change lifecycle. The Skill Requirements: We're looking for candidates with a blend of the following: Strong commercial experience with ReactJS, HTML, CSS, and JavaScript Solid understanding of ES6+ and TypeScript Experience mentoring developers and conducting peer reviews Excellent communication skills and a team-first mindset Passion for clean code and problem-solving The Benefits More ❯
Employment Type: Full-Time
Salary: £50,000 - £55,000 per annum
Posted:

Principal Software Engineer

United Kingdom
Hybrid / WFH Options
North Scout
team, especially in the early weeks. What we’re looking for: Strong experience with AWS (Azure or GCP a bonus) and one or more modern languages such as Java, JavaScript or Python Hands-on knowledge of Terraform or CloudFormation Familiarity with Kubernetes , serverless architectures, CI/CD, and observability tools like Dynatrace, New Relic or Wiz Confident communicator who can More ❯
Posted:

Senior Software Engineer

Berkshire, England, United Kingdom
Matchtech
ThreadX, QNX, Linux) Embedded Linux (applications, kernel, or driver development) C/C++ programming Strong understanding of software lifecycles , object-oriented design , and testing principles . Desirable: Skills in JavaScript , Node.js , React.js , Python , or Rust . Knowledge of TCP/IP and other communication protocols. Experience with version control , CI/CD , and automated testing tools . Familiarity with MISRA More ❯
Employment Type: Full-Time
Salary: Salary negotiable
Posted:

Senior Frontend Engineer

City of London, London, United Kingdom
Impala Search
who thrives in fast-paced, high-growth environments. What You’ll Bring 5+ years of front-end development experience building large-scale web applications. Expertise in React, TypeScript/JavaScript, HTML, and CSS . A strong appreciation for UI/UX design and a passion for delivering exceptional user experiences. Understanding of Design Patterns and SOLID principles . Experience building More ❯
Posted:

Senior Frontend Engineer

London Area, United Kingdom
Impala Search
who thrives in fast-paced, high-growth environments. What You’ll Bring 5+ years of front-end development experience building large-scale web applications. Expertise in React, TypeScript/JavaScript, HTML, and CSS . A strong appreciation for UI/UX design and a passion for delivering exceptional user experiences. Understanding of Design Patterns and SOLID principles . Experience building More ❯
Posted:

Graduate / Junior Software Engineer – Mission-Led Start-Up – £35k–£50k + Benefits

London Area, United Kingdom
Hybrid / WFH Options
Kioni Talent
A STEM degree (or equivalent qualification) Evidence of your passion for technology — whether through personal projects, internships, open-source contributions, or hackathons Familiarity with at least one programming language (JavaScript, TypeScript, Python, etc.) Willingness to learn React, TypeScript, Next.js, Tailwind CSS, and AWS A collaborative mindset and eagerness to be part of a growing team Why Join? Work with a More ❯
Posted:

Senior Software Engineer

Berkshire, United Kingdom
Matchtech
Linux), embedded Linux application/kernel/driver development, or C/C++. Knowledge of software development processes, Object-Oriented Design, Design Patterns, and software testing. Desirable: Languages: Python, JavaScript/node.js/react.js, Rust Knowledge of communications protocols (e.g., TCP/IP) Experience with version control, CI/CD, and automated test frameworks Familiarity with defensive coding standards (e.g. More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Software Engineer

united kingdom, united kingdom
Big Red Recruitment
opportunity to contribute to the future front-end rebuild, re-platforming their architecture, building microservices in and TypeScript, and a host of new feature development work. Tech Stack: , TypeScript, JavaScript MongoDB (NoSQL), REST/GraphQL APIs Azure Cloud, containerised deployments HTML, CSS What we're looking for: 5+ years' experience in backend or full stack development Strong knowledge of , TypeScript More ❯
Posted:

Software Developer

London, United Kingdom
Big Red Recruitment Midlands Limited
contribute to the future front-end rebuild, re-platforming their architecture, building microservices in Node.js and TypeScript, and a host of new feature development work. Tech Stack: Node.js, TypeScript, JavaScript MongoDB (NoSQL), REST/GraphQL APIs Azure Cloud, containerised deployments HTML, CSS What we re looking for: 5+ years experience in backend or full stack development Strong knowledge of Node.js More ❯
Employment Type: Permanent
Salary: GBP 50,000 - 87,000 Annual
Posted:

Graduate Developer

Brighton, East Sussex, England, United Kingdom
FLTalent
team. What We’re Looking For Education: A degree in Computer Science, Software Engineering, or a related field. Technical Skills: Knowledge of one or more programming languages (e.g., Python, JavaScript, Java, C#, etc.). Problem-Solving: A logical mindset with strong problem-solving abilities. Team Player: Excellent communication and collaboration skills to work effectively within a team. Adaptability: Eagerness to More ❯
Employment Type: Full-Time
Salary: Competitive salary
Posted:

.NET Architect

City of London, London, England, United Kingdom
Hybrid / WFH Options
Noir
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 ❯
Employment Type: Full-Time
Salary: £80,000 - £100,000 per annum
Posted:

Lead Software Engineer

London, United Kingdom
The Difference Engine
engineering/computer science fundamentals While a polyglot mindset is important, a background in a strongly typed OO language is highly valued (C#, Java), as is experience with React, JavaScript/Typescript on the Front End AWS preferably, though other public cloud experience is accepted Experience of building feature rich products that users love, while ensuring scalability, performance and security More ❯
Employment Type: Permanent
Salary: GBP 120,000 Annual
Posted: