526 to 550 of 3,214 ECMAScript Jobs

Senior Frontend Developer

Hiring Organisation
Lorien
Location
Leeds, West Yorkshire, England, United Kingdom
Employment Type
Contractor
Contract Rate
£550 - £600 per day
learning Contribute to component-driven architecture and design system evolution Participate in production support and incident response What You'll Bring Strong experience in JavaScript/TypeScript development Expert-level knowledge of React, TypeScript, and modern JS Experience with state management (Redux, Zustand, Context API) Deep understanding of performance optimization ...

Full Stack Engineer

Hiring Organisation
Fortice
Location
City of London, London, United Kingdom
development experience within the UK public sector Cloud experience (AWS, Azure, or GCP) Strong experience with Java or Python Front-end experience using modern JavaScript frameworks (e.g. React, Angular, Vue) Familiarity with RESTful APIs, databases, and version control Experience working in agile delivery environments Desirable DevOps or CI/ ...

Full Stack Engineer

Hiring Organisation
Fortice
Location
London Area, United Kingdom
development experience within the UK public sector Cloud experience (AWS, Azure, or GCP) Strong experience with Java or Python Front-end experience using modern JavaScript frameworks (e.g. React, Angular, Vue) Familiarity with RESTful APIs, databases, and version control Experience working in agile delivery environments Desirable DevOps or CI/ ...

Full-Stack Software Developer

Hiring Organisation
Sanderson Government and Defence
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
Up to £520 per day
Lambda, IAM) Kafka/event-driven systems SQL optimisation REST/JSON API design Docker proficiency Excellent communication skills Nice to Have JavaScript/React Aurora/RDS If you're proactive, outcomes-driven, and thrive in high-stakes environments with strong stakeholder engagement skills, then please get in touch ...

Senior Software Engineer

Hiring Organisation
Kareera
Location
Kingston upon Hull, England Metropolitan Area, United Kingdom
balance of collaboration and autonomy. What we need Strong PHP and Laravel experience Solid understanding of software engineering principles and design patterns Experience with JavaScript (Vue.js preferred), HTML, and CSS Familiarity with Git, CI/CD, and containerisation (Docker) Exposure to cloud platforms (Azure, AWS, or GCP) A proactive, collaborative ...

Full-Stack Software Developer

Hiring Organisation
Sanderson
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£520 per day
Lambda, IAM) Kafka/event-driven systems SQL optimisation REST/JSON API design Docker proficiency Excellent communication skills Nice to Have JavaScript/React Aurora/RDS If you're proactive, outcomes-driven, and thrive in high-stakes environments with strong stakeholder engagement skills, then please get in touch ...

Web Developer - Newcastle - Salary up to £43K DOE

Hiring Organisation
Reed
Location
Newcastle Upon Tyne, Tyne and Wear, England, United Kingdom
Employment Type
Full-Time
Salary
£39,000 - £43,000 per annum, Inc benefits
applications for a variety of exciting projects. Writing clean, maintainable code in Java, PHP or C#. Building responsive front-end interfaces using HTML, CSS, JavaScript, and frameworks like React, Vue.js, or Angular. Working with SQL databases and designing scalable, resilient architectures. Collaborating with designers and developers to deliver best ...

Web Developer

Hiring Organisation
Jackson Hogg - Tech
Location
Doxford International Business Park, Sunderland, Tyne and Wear, England, United Kingdom
Employment Type
Full-Time
Salary
£25,000 - £35,000 per annum
completion Qualifications Proven experience with SEO best practices and implementation Strong experience with WordPress and PHP Proficient in core web development technologies including JavaScript, CSS, and HTML Awareness of CI/CD principles and tooling, including Azure DevOps and Git Solid understanding of software engineering standards and best practices Familiarity ...

Software Engineer Full Stack Java - HealthTech

Hiring Organisation
Client Server
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
backend software development skills including Spring Boot You have experience with relational databases and SQL query writing You have some front end experience with JavaScript, Angular or React You have a strong understanding of REST APIs and real-time systems You're comfortable working with legacy Ruby You have ...

Senior React Engineer

Hiring Organisation
IntecSelect
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 700 - 800 Daily
field 5+ years of experience in Front End/UI engineering, with a focus on performance and scale Deep expertise in React, TypeScript, and JavaScript Strong understanding of WebSocket integration, low-latency data streaming, and threading Experience troubleshooting data-heavy UIs and optimising load times Familiarity with tools like Redis ...

Senior React Engineer

Hiring Organisation
INTEC SELECT LIMITED
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
related field 5+ years of experience in frontend/UI engineering, with a focus on performance and scale Deep expertise in React, TypeScript, and JavaScript Strong understanding of WebSocket integration, low-latency data streaming, and threading Experience troubleshooting data-heavy UIs and optimising load times Familiarity with tools like Redis ...

Software Engineer

Hiring Organisation
Cocentric
Location
London Area, United Kingdom
well across disciplines Bonus: experience with identity systems (e.g. Microsoft Entra ID/Azure AD), SSO, or HRIS integration OUR TECH STACK Frontend: React, JavaScript Backend: C#, .Net, Azure Service Fabric, Kubernetes Infrastructure: Azure, Service Fabric, Cosmos DB WHY COCENTRIC Be a key part of a product that’s transforming ...

Software Engineer

Hiring Organisation
Cocentric
Location
City of London, London, United Kingdom
well across disciplines Bonus: experience with identity systems (e.g. Microsoft Entra ID/Azure AD), SSO, or HRIS integration OUR TECH STACK Frontend: React, JavaScript Backend: C#, .Net, Azure Service Fabric, Kubernetes Infrastructure: Azure, Service Fabric, Cosmos DB WHY COCENTRIC Be a key part of a product that’s transforming ...

Software Engineer

Hiring Organisation
Cocentric
Location
Slough, Berkshire, UK
Employment Type
Full-time
well across disciplines Bonus: experience with identity systems (e.g. Microsoft Entra ID/Azure AD), SSO, or HRIS integration OUR TECH STACK Frontend: React, JavaScript Backend: C#, .Net, Azure Service Fabric, Kubernetes Infrastructure: Azure, Service Fabric, Cosmos DB WHY COCENTRIC Be a key part of a product that's transforming ...

Senior Developer

Hiring Organisation
Reed
Location
Holborn, London, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £80,000 per annum, Inc benefits
Python (Django, Flask, or FastAPI) PostgreSQL (design, optimisation, maintenance) Containerisation (Docker/Kubernetes) Event-driven architecture (Kafka/RabbitMQ) Desirable experience includes: TypeScript/JavaScript (NextJS, NodeJS, Tailwind) Terraform and DevOps practices Experience in building and scaling SaaS platforms in production. Strong background in software architecture, microservices, and API design. ...

Lead Web Developer

Hiring Organisation
Reed
Location
Eastbourne, East Sussex, England, United Kingdom
Employment Type
Full-Time
Salary
£33,000 - £40,000 per annum, Inc benefits
leading web development teams in a fast-paced environment Expertise with modern front-end frameworks such as React, Vue, Angular, or similar Proficiency in JavaScript/TypeScript, semantic HTML, and modern CSS Solid understanding of back-end technologies (Node.js, APIs, microservices) Experience with CI/CD pipelines, cloud platforms ...

Senior Software Engineer

Hiring Organisation
Adecco
Location
Northern Ireland, UK
Employment Type
Full-time
role. AWS Expertise: Strong proficiency in AWS services, particularly Amazon Lex and other AI/ML offerings. Tech Savvy: Proficiency in TypeScript and modern JavaScript frameworks. DevOps Knowledge: Solid understanding of DevOps methodologies and tools (CI/CD, Serverless, Monitoring). Contact Center Familiarity: Experience with contact center technologies ...

Senior Software Engineer

Hiring Organisation
Adecco
Location
Windsor, Berkshire, United Kingdom
Employment Type
Contract
Contract Rate
£700/day Inside IR35
role. AWS Expertise : Strong proficiency in AWS services, particularly Amazon Lex and other AI/ML offerings. Tech Savvy : Proficiency in TypeScript and modern JavaScript frameworks. DevOps Knowledge : Solid understanding of DevOps methodologies and tools (CI/CD, Serverless, Monitoring). Contact Center Familiarity : Experience with contact center technologies ...

Senior Java Developer - Edinburgh Hybrid - 100K, 30% Bonus

Hiring Organisation
Lorien
Location
Edinburgh, Stockbridge, City of Edinburgh, United Kingdom
Employment Type
Permanent
Salary
£80000 - £100000/annum Bonus, Hybrid, WFH, Progression
Writing clean code and instilling best practices wherever possible Knowledge and Experience: Strong software development skills with Java and ideally any of the following: JavaScript/Python/C#/C++/Kotlin Strong grasp of commonly used data structures and algorithms such as HashMaps/HashTables, and proven record ...

Lead Developer

Hiring Organisation
C4S Search Ltd
Location
Wiltshire, England, United Kingdom
Employment Type
Full-Time
Salary
£64,000 - £70,000 per annum
business objectives and delivers measurable value KEY SKILLS: Strong software development background across technologies such as ASP.NET/ASP.NET Core, C#, VB, HTML5, CSS3, JavaScript, MVC/Razor and SQL Server Strong proficiency in Azure Integration Services, including API Management, Functions, Logic Apps, Service Bus, Event Grid, Event Hubs ...

Software Engineer (.NET)

Hiring Organisation
Gerrard White
Location
Peterborough, Cambridgeshire, East Anglia, United Kingdom
Employment Type
Permanent, Work From Home
REST and SOAP) - Git and SCM (e.g. Azure DevOps) Experience in at least one of: - Entity Framework - Vue.js, React or Blazor - MS SQL Server - JavaScript and HTML Architecture and design of software systems. Understanding and experience of the software development life cycle, agile methodology (especially Scrum). What we offer ...

Software Engineer .NET

Hiring Organisation
Vermelo RPO
Location
Bretton, Peterborough, Cambridgeshire, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
REST and SOAP) - Git and SCM (e.g. Azure DevOps) Experience in at least one of: - Entity Framework - Vue.js, React or Blazor - MS SQL Server - JavaScript and HTML Architecture and design of software systems. Understanding and experience of the software development life cycle, agile methodology (especially Scrum). What we offer ...

Lead Engineer/Head of Software Engineering

Hiring Organisation
Martin Veasey Talent Solutions
Location
East Midlands, Hardingstone, Northamptonshire, United Kingdom
Employment Type
Permanent
Salary
£75000 - £85000/annum + Bonus + Excellent Benefits
role where your technical depth, problem-solving skills, and leadership make a visible impact. You'll bring: 5+ years of full-stack experience in JavaScript (Node.js/React) and Python. Strong cloud background, ideally AWS (Lambda, S3, Glue, Redshift). Proven ability to design and deploy scalable web and data ...

AI Engineering Lead

Hiring Organisation
Akixi
Location
Midlands, UK
Employment Type
Full-time
developing and integrating AI solutions such as chatbots, voicebots, ML models, or LLM-based analytics. Strong proficiency in Python (preferred) and/or JavaScript/TypeScript. Hands-on experience with AI frameworks (TensorFlow, PyTorch, LangChain) and LLM APIs (Azure OpenAI, OpenAI API, Anthropic, AWS Bedrock). Experience with Microsoft ...

AI Engineering Lead

Hiring Organisation
Akixi
Location
Southampton, UK
Employment Type
Full-time
developing and integrating AI solutions such as chatbots, voicebots, ML models, or LLM-based analytics. Strong proficiency in Python (preferred) and/or JavaScript/TypeScript. Hands-on experience with AI frameworks (TensorFlow, PyTorch, LangChain) and LLM APIs (Azure OpenAI, OpenAI API, Anthropic, AWS Bedrock). Experience with Microsoft ...