ECMAScript Job Vacancies

451 to 475 of 2,646 ECMAScript Jobs

Senior PHP Developer

London, United Kingdom
Hybrid / WFH Options
ARC IT Recruitment
emerging technologies. We are looking for candidates who have: Deep experience with PHP and MySQL in high-availability, scalable environments. Strong skills in complementary technologies such as TypeScript, React, JavaScript, or Python. An interest in learning other languages - especially Golang. Proven leadership skills, capable of guiding teams and sharing knowledge effectively. In-depth understanding of relational database tuning and performance More ❯
Employment Type: Permanent
Salary: GBP 60,000 - 95,000 Annual
Posted:

Test Engineer with Security Clearance

Winchester, Virginia, United States
Mission Services LLC (MSI)
related technical field-or equivalent experience. Minimum 5-8 years of experience in automation testing within complex IT/OT environments. Expertise in scripting languages such as Java, Python, JavaScript or C#. Strong knowledge of databases (SQL, Oracle) and query-based validation. Hands-on with CI/CD tools (Jenkins, GitLab CI), DevOps processes, and code versioning (Git, SVN). More ❯
Employment Type: Permanent
Salary: USD Annual
Posted:

Principal (Fullstack Java) Engineer

Boston, Massachusetts, United States
Softworld Inc
10+ years of experience with significant software engineering skills and computer science experience. Bachelor's Degree or equivalent. Hands-on experience with Java based technologies and ReactJS/Angular, JavaScript is very desirable. Knowledge of Linux, SQL, RESTful API, AWS (EC2, Docker, Kubernetes) and broad technologies. Prior experience with Perl, Spring Boot framework, PostgreSQL, Terraform or similar technology is desirable. More ❯
Employment Type: Permanent
Salary: USD Annual
Posted:

Senior Software Engineer

Chester, Cheshire, England, United Kingdom
Interquest
Work with the wider business to deliver solutions at pace Champion new technologies across the group Participate in Scrum ceremonies The Ideal Candidate: Extensive experience with frontend technologies (React, JavaScript, Typescript, Redux, HTML5 and CSS3) Experience with testing frameworks such as Jest, React Testing Library, Cypress and Playwright Exposure to CI/CD, Github, Docker, Jenkins and Grafana (a nice More ❯
Employment Type: Full-Time
Salary: £60,000 - £80,000 per annum
Posted:

Backend Software Developer with C# and Umbraco

remote
Hybrid / WFH Options
Nexus Jobs Limited
and identifying ways to automate processes working alongside the business lead Implementing automated regression testing for the software developed Skills and Experience: Excellent working knowledge of ASP.NET, C#, HTML, JavaScript, jQuery, React Framework, MS SQL Server, Mongo DB, Elasticsearch Understanding of SOLID development principles Worked previously on projects using the Umbraco CMS Continuous Delivery skills, tools and techniques (e.g. Git More ❯
Employment Type: Permanent
Posted:

Platform Engineer

Manchester, North West, United Kingdom
Hybrid / WFH Options
Anson Mccade
control, static code analysis, and software design patterns Support cloud deployment, containerization, and infrastructure automation as part of continuous improvement efforts Skills & Experience: Proficiency in programming languages such as JavaScript, Java, .Net, or Python Experience with version control systems like Git and CI/CD tools including Jenkins, Bamboo, or TeamCity Familiarity with automated testing frameworks and static code analysis More ❯
Employment Type: Permanent, Work From Home
Posted:

SC Cleared Salesforce Developer

City of London, London, United Kingdom
Hybrid / WFH Options
ARM
inc. defining invocable Flow actions and batch Apex) Salesforce Experience Cloud site-building experience Able to develop robust and advanced Salesforce Lightning Web Components (inc. familiarity with HTML, CSS, JavaScript) DevOps pipeline implementation and troubleshooting (inc. Python, Node.JS, Bash) AWS Services - including Lambda (Java), Secrets Manager, API Gateways Salesforce email configuration, including DNS/DKIM/SPF AI prompt building More ❯
Employment Type: Contract
Rate: £600 - £700/day Inside IR35 (Negotiable rate)
Posted:

Golang Developer - Remote - to £60k+excellent benefits

Norwich, Norfolk, England, United Kingdom
Hybrid / WFH Options
Ascent Sourcing Ltd
ways to improve system performance, stability, and security Support internal innovation, including integration with LLMs and emerging AI capabilities Requirements Demonstrated experience in full-stack software development Proficient in JavaScript/TypeScript with experience in Node.js and React Expert in Go Comfortable working with containerised applications and Kubernetes Experience with cloud infrastructure (AWS or similar) Familiarity with DevOps tooling and More ❯
Employment Type: Full-Time
Salary: £50,000 - £60,000 per annum
Posted:

Power Platform Developer

London, United Kingdom
Hybrid / WFH Options
Nigel Frank International
Strong problem-solving skills and attention to detail. Excellent communication skills with the ability to work across technical and business teams. Competence in Microsoft tools (Excel, SharePoint); experience with JavaScript, C#, HTML, or SQL beneficial. Familiarity with agile methodologies and structured delivery. For senior roles: proven track record in leading projects, mentoring, and delivering scalable enterprise solutions. What We're More ❯
Employment Type: Permanent
Salary: £49000 - £61000/annum
Posted:

AI Software Engineer with Security Clearance

Fairfax, Virginia, United States
Hybrid / WFH Options
Anonymous Employer
object-oriented design and programming, as well as knowledge of design patterns and algorithmic analysis. Programming Languages: Proficiency in Python is a must, experience with other languages such as JavaScript, TypeScript, or C++ is useful but not critical. GenAI: Experience building applications leveraging LLMs as a core component Work Environment: Experience working in a small, remote team environment is preferred. More ❯
Employment Type: Permanent
Salary: USD Annual
Posted:

Power Platform Developer

London, South East, England, United Kingdom
Hybrid / WFH Options
Nigel Frank International
Strong problem-solving skills and attention to detail. Excellent communication skills with the ability to work across technical and business teams. Competence in Microsoft tools (Excel, SharePoint); experience with JavaScript, C#, HTML, or SQL beneficial. Familiarity with agile methodologies and structured delivery. For senior roles: proven track record in leading projects, mentoring, and delivering scalable enterprise solutions. What We're More ❯
Employment Type: Full-Time
Salary: £49,000 - £61,000 per annum
Posted:

Applications Developer

England, Marchwood, Hampshire, United Kingdom
Omega Resource Group
and performance issues to maintain application functionality. • Keeping abreast of emerging technologies and trends to contribute to continuous improvement • Write technical documentation Experience - Application Developer • Strong skills in Advanced JavaScript (NodeJS ES6) technologies, typescript with knowledge of best practices • DevOps strategies, designing and best practices/strategies • Senior development experience using MERN framework for web application development. • Unit with React More ❯
Employment Type: Contract
Rate: £400 - £550/day
Posted:

Software Developer (.NET)

Shoreditch, London, United Kingdom
Hybrid / WFH Options
Yolk Recruitment
product roadmap and future feature development. The skills you'll need Strong technical knowledge in .NET Framework, .NET Core, ASP.NET MVC/Web Forms, HTML/CSS/SASS, JavaScript/TypeScript, RESTful APIs, SQL Server, and Entity Framework. Experience with scalable applications, design patterns, and asynchronous programming (e.g. queuing, caching, logging). Familiarity with Windows services, DevOps, Azure, CI More ❯
Employment Type: Permanent
Salary: £50000 - £60000/annum + benefits
Posted:

Software Architect

United Kingdom
Hybrid / WFH Options
Fruition Group
least 2 years in an architectural or leadership role. Strong understanding of architectural patterns (e.g., microservices, layered, serverless). Proficiency in programming languages such as Java, C#, Python, or JavaScript/TypeScript. Hands-on experience with cloud platforms (in particular Azure) Excellent communication and stakeholder engagement skills. Desirable: Experience in enterprise application integration (EAI). Knowledge of data modelling and More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

Software Architect

Leeds, West Yorkshire, Yorkshire, United Kingdom
Hybrid / WFH Options
Fruition Group
least 2 years in an architectural or leadership role. Strong understanding of architectural patterns (e.g., microservices, layered, serverless). Proficiency in programming languages such as Java, C#, Python, or JavaScript/TypeScript. Hands-on experience with cloud platforms (in particular Azure) Excellent communication and stakeholder engagement skills. Desirable: Experience in enterprise application integration (EAI). Knowledge of data modelling and More ❯
Employment Type: Permanent, Work From Home
Posted:

Application Architect

Leeds, West Yorkshire, Yorkshire, United Kingdom
Hybrid / WFH Options
Fruition Group
least 2 years in an architectural or leadership role. Strong understanding of architectural patterns (e.g., microservices, layered, serverless). Proficiency in programming languages such as Java, C#, Python, or JavaScript/TypeScript. Hands-on experience with cloud platforms (in particular Azure) Excellent communication and stakeholder engagement skills. Desirable: Experience in enterprise application integration (EAI). Knowledge of data modelling and More ❯
Employment Type: Permanent, Work From Home
Posted:

Software Developer .NET

East London, London, England, United Kingdom
Hybrid / WFH Options
Yolk Recruitment Ltd
product roadmap and future feature development. The skills you'll need Strong technical knowledge in .NET Framework, .NET Core, ASP.NET MVC/Web Forms, HTML/CSS/SASS, JavaScript/TypeScript, RESTful APIs, SQL Server, and Entity Framework. Experience with scalable applications, design patterns, and asynchronous programming (e.g. queuing, caching, logging). Familiarity with Windows services, DevOps, Azure, CI More ❯
Employment Type: Full-Time
Salary: £50,000 - £60,000 per annum
Posted:

Software Architect

Bradford, Yorkshire, United Kingdom
Hybrid / WFH Options
Fruition Group
least 2 years in an architectural or leadership role. Strong understanding of architectural patterns (e.g., microservices, layered, serverless). Proficiency in programming languages such as Java, C#, Python, or JavaScript/TypeScript. Hands-on experience with cloud platforms (in particular Azure) Excellent communication and stakeholder engagement skills. Desirable: Experience in enterprise application integration (EAI). Knowledge of data modelling and More ❯
Employment Type: Permanent
Salary: GBP Annual
Posted:

UI/UX Frontend Software Developer with Security Clearance

Herndon, Virginia, United States
Synertex LLC
z2bz0 years of proven UI/UX experience. Proven work experience as a Front-end Developer. Proficiency with Vue.js and experience with one or more: Angular, Python, Typescript, JavaScript, jQuery, CSS, HTML. Experience with Docker, GitHub, GitLab. Strong UI/UX design and development skills supported by a portfolio. Excellent visual design skills with sensitivity to user-system interaction. Ability More ❯
Employment Type: Permanent
Salary: USD Annual
Posted:

Senior Software Developer PHP

Newton Abbot, Devon, England, United Kingdom
Hybrid / WFH Options
Reed
writing automated tests (PHP Unit/PEST) Working knowledge of CI/CD pipelines (GitLab CI, GitHub Actions, etc.) Experience with Docker and containerised development environments Exposure to modern JavaScript frameworks (Vue.js, React, or similar) Benefits: A supportive, close-knit development team with a culture of mentorship and learning Opportunities to lead technically and shape the architecture of new solutions More ❯
Employment Type: Full-Time
Salary: £50,000 - £65,000 per annum, Inc benefits
Posted:

Sr Associate SDET job with shark

Montvale, New Jersey, United States
Sharkanalytics pvt ltd
from an accredited college/university. Strong background in development with 5 years of hands on experience developing, testing, performance tuning of large scale systems built with C#, .NET, Javascript frameworks, SQL Server, scripting languages such as PowerShell, Python, etc. Experience with Selenium, JMeter, VSTS or any other automation & performance testing tools is required. Experience with agile engineering practices and More ❯
Employment Type: Any
Salary: USD Annual
Posted:

Lead R Data Scientist - Sustainability

Fully Remote, St James's Square, Greater London, United Kingdom
Hybrid / WFH Options
Morris Sinclair Recruitment
communication skills Structured approach to quantitative challenges Comfort working in a dynamic startup environment Qualifications Microsoft Azure experience, particularly R integration Application containerization knowledge (Docker, etc.) Familiarity with Python, JavaScript, C++, bash, or other languages Web application development experience (React, .NET) Background in data security and IP protection workflows Knowledge of environmental sustainability concepts (carbon footprinting, lifecycle analysis, environmental modeling More ❯
Employment Type: Permanent
Salary: £70000 - £120000/annum
Posted:

Mid-level Software Engineer PHP/Laravel

Newton Abbot, Devon, England, United Kingdom
Hybrid / WFH Options
Reed
writing automated tests (PHP Unit/PEST) Working knowledge of CI/CD pipelines (GitLab CI, GitHub Actions, etc.) Experience with Docker and containerised development environments Exposure to modern JavaScript frameworks (Vue.js, React, or similar) Benefits: A supportive, close-knit development team with a culture of mentorship and learning Opportunities to lead technically and shape the architecture of new solutions More ❯
Employment Type: Full-Time
Salary: £38,000 - £48,000 per annum, Inc benefits
Posted:

Lead Data Scientist

London Area, United Kingdom
Mentmore
technical audiences Ideal Candidate Profile Technical Experience 5–7 years of professional experience across software engineering, DevOps, or applied data science Strong programming skills in Python and familiarity with JavaScript/TypeScript Working knowledge of React (not a frontend role, but an understanding of the stack is important) Hands-on experience with containerisation (Docker) and cloud deployment (Terraform, microservices, Azure More ❯
Posted:

Lead Data Scientist

City of London, London, United Kingdom
Mentmore
technical audiences Ideal Candidate Profile Technical Experience 5–7 years of professional experience across software engineering, DevOps, or applied data science Strong programming skills in Python and familiarity with JavaScript/TypeScript Working knowledge of React (not a frontend role, but an understanding of the stack is important) Hands-on experience with containerisation (Docker) and cloud deployment (Terraform, microservices, Azure More ❯
Posted: