1,901 to 1,925 of 2,682 Permanent ECMAScript Jobs

LLM APIs (e.g. GPT, Claude, Gemini) Developing and optimising APIs, embeddings, and backend services for AI systems Writing clean, efficient, and well-documented code in Python and TypeScript/JavaScript Working within cloud environments (AWS, Azure, or GCP) to deploy and scale AI applications Participating in code reviews , technical discussions, and internal R&D projects Collaborating with engineers, product teams … data engineering, or software development Demonstrable experience delivering AI, LLM, or data-driven applications Strong programming skills in Python (e.g. PyTorch, TensorFlow, scikit-learn) and/or TypeScript/JavaScript Familiarity with LLM frameworks (LangChain, LlamaIndex) and vector databases (Pinecone, Weaviate) Understanding of cloud platforms (AWS, Azure, or GCP) and modern development workflows (Git, CI/CD) Excellent problem-solving More ❯

Maintenance Maintain and enhance the Legal Ombudsman's Umbraco-powered website. Implement updates, troubleshoot issues, and optimise for performance, accessibility (WCAG), and security. Develop using ASP.NET Core, HTML, CSS, JavaScript, and Razor syntax within the MVC framework. Collaboration and Training Provide guidance and training to the Communications team on creating accessible digital content. Work with internal teams and stakeholders to … manage your time effectively, and carry out additional duties as required by the line manager. About you Proven experience in web development: Strong coding skills in CSS, HTML, and JavaScript, with a solid understanding of modern web development practices. Experience with CMS: Demonstrable experience in working with Content Management Systems (CMS), including creating and editing custom themes/templates. Attention … set, especially in areas such as Microsoft's Power Platform, SharePoint, and AI/Intelligent Automation. Proven experience in developing and maintaining websites, using languages and frameworks such as JavaScript, HTML, CSS, and .NET. Experience in web performance optimisation: Demonstrable skills in optimising websites for performance, security, and accessibility, ensuring a smooth user experience. Experience supporting accessible content: Knowledge of More ❯

and Maintenance Maintain and enhance the Legal Ombudsmans Umbraco-powered website. Implement updates, troubleshoot issues, and optimise for performance, accessibility (WCAG), and security. Develop using ASP.NET Core, HTML, CSS, JavaScript, and Razor syntax within the MVC framework. Collaboration and Training Provide guidance and training to the Communications team on creating accessible digital content. Work with internal teams and stakeholders to … manage your time effectively, and carry out additional duties as required by the line manager. About you Proven experience in web development: Strong coding skills in CSS, HTML, and JavaScript, with a solid understanding of modern web development practices. Experience with CMS: Demonstrable experience in working with Content Management Systems (CMS), including creating and editing custom themes/templates. Attention … the skillset, especially in areas such as Microsofts Power Platform, SharePoint, and AI/Intelligent Automation. Proven experience in developing and maintaining websites, using languages and frameworks such as JavaScript, HTML, CSS, and .NET. Experience in web performance optimisation: Demonstrable skills in optimising websites for performance, security, and accessibility, ensuring a smooth user experience. Experience supporting accessible content: Knowledge of More ❯

creating user-flows to developing interactive prototypes and high-fidelity UI designs, ensuring alignment with business goals. Front-End Development: Implement responsive and accessible user interfaces using HTML, CSS, JavaScript, and modern frameworks like Angular, React, or Vue. Collaboration: Work closely with stakeholders, product owners, and developers to ensure smooth implementation of UI designs, bridging the gap between design intent … showcasing design thinking, UX research, wireframes, prototypes, design system, and interface design skills. Proficiency in design tools such as Figma. Strong knowledge of HTML, CSS (SASS/LESS), and JavaScript frameworks (e.g., React, Angular, Vue). Experience with front-end performance optimization and responsive design principles. Familiarity with accessibility standards (WCAG) and cross-browser compatibility. Understanding of version control tools More ❯

technologies, responsive design, frameworks like Django, data storage and databases, user authentication, APIs, automated testing, and more. What we are looking for: Strong coding skills: proficient in HTML, CSS, JavaScript, Python A relevant degree (e.g. Computer Science, Software Engineering, Web Development) or equivalent experience Evidence of continuous professional development (courses, certifications, self projects etc) Experience using frameworks such as Django … and continuous improvement, incorporating best practices, keeping up to date with web development trends & frameworks User-Centric Frontend Development (responsive design, content layout, accessibility) Interactive Frontend Development (HTML, CSS, JavaScript, handling user input, debugging/manual testing Data-Centric Back-end Development (Python, working with relational & non-relational databases) Full Stack Frameworks (Django/Python MVC frameworks, APIs, authentication, e More ❯

Salesforce DevOps Lead Location: Reading Salary: Up to 75,000 per annum (depending on experience) Working Model: Hybrid - 2 days in the office per week Type: Permanent, full-time About the Role: Our client is looking for a highly skilled More ❯

Salesforce DevOps Lead Location: Reading Salary: Up to £75,000 per annum (depending on experience) Working Model: Hybrid - 2 days in the office per week Type: Permanent, full-time About the Role: Our client is looking for a highly skilled More ❯

Note: This is a Sr. Level role! About the Role- We are looking for an experienced Senior Airflow Developer with over 5 years of experience to help transition our existing Windows scheduler jobs to Apache Airflow DAGs. In this role More ❯

Job Description: We’re looking for a hands-on Senior Software Developer/Technical Lead with strong expertise in Java and Spring frameworks to design, develop, and deliver end-to-end software solutions. Operates effectively with minimal supervision, receiving general More ❯

Job Title: Full Stack Developer – Wine Hub Employment Type: Full-Time Location: London Working Model: Hybrid Reports To: Head of Engineering Company Overview: Wine Owners is a rapidly growing B2B SaaS scale-up that offers innovative software solutions designed for More ❯

If you need support in completing the application or if you require a different format of this document, please get in touch with at UKI.recruitment@tcs.com or call TCS London Office number 02031552100/+44 204 520 2575 with the More ❯

Do you love building scalable applications and working with modern PHP frameworks? Are you excited by the chance to develop a fast-growing SaaS platform and see the direct impact of your work? We’re supporting a dynamic tech-driven More ❯

Senior JavaScript Developer 3-4 days p/week in London Paying up to £80k Senior JavaScript Developer – Would you like the opportunity to work for a fast growing start-up who are on a mission to create an AI tutor to help learners? They’re currently building an all-in-one platform for aiding students to achieve their full … potential. AI is at the heart of everything they do, from their products to the way they work as a team. As a Senior JavaScript Developer, you will be joining a small team, where you will build, scale, and maintain high-quality fullstack applications while collaborating closely with product and design to deliver end-to-end features. The ideal candidate … and AI. Key requirements: 5+ years of fullstack development experience. Strong skills in React, TypeScript Node AWS Experience integrating AI/ML via APIs If you’re a Senior JavaScript Developer who enjoys the idea of working in an EdTech Start-up, please apply. More ❯

Senior JavaScript Developer 3-4 days p/week in London Paying up to £80k Senior JavaScript Developer – Would you like the opportunity to work for a fast growing start-up who are on a mission to create an AI tutor to help learners? They’re currently building an all-in-one platform for aiding students to achieve their full … potential. AI is at the heart of everything they do, from their products to the way they work as a team. As a Senior JavaScript Developer, you will be joining a small team, where you will build, scale, and maintain high-quality fullstack applications while collaborating closely with product and design to deliver end-to-end features. The ideal candidate … and AI. Key requirements: 5+ years of fullstack development experience. Strong skills in React, TypeScript Node AWS Experience integrating AI/ML via APIs If you’re a Senior JavaScript Developer who enjoys the idea of working in an EdTech Start-up, please apply. More ❯

Are you an experienced JavaScript Developer with a passion for building solutions that power the utilities sector? One of my clients are hiring on a contract basis to help deliver technology that keeps the UK’s essential services running smoothly. What You’ll Do: Develop and maintain scalable web applications for utility clients Work with modern JavaScript frameworks (React, Node.js … platforms (AWS, Azure, or GCP) Collaborate remotely with cross-functional teams (Product, UX, Data) Contribute to best practices and technical decisions What We’re Looking For: Strong experience with JavaScript (ES6+) Proficiency in React, Node.js, or similar frameworks Experience in the utilities sector is a plus Solid understanding of REST APIs and cloud environments Agile team experience and excellent communication More ❯

Are you an experienced JavaScript Developer with a passion for building solutions that power the utilities sector? One of my clients are hiring on a contract basis to help deliver technology that keeps the UK’s essential services running smoothly. What You’ll Do: Develop and maintain scalable web applications for utility clients Work with modern JavaScript frameworks (React, Node.js … platforms (AWS, Azure, or GCP) Collaborate remotely with cross-functional teams (Product, UX, Data) Contribute to best practices and technical decisions What We’re Looking For: Strong experience with JavaScript (ES6+) Proficiency in React, Node.js, or similar frameworks Experience in the utilities sector is a plus Solid understanding of REST APIs and cloud environments Agile team experience and excellent communication More ❯

Senior Full Stack Developer (JavaScript) Who are we? Enablis is a technology delivery consultancy who partner with clients to accelerate digital roadmaps. By combining our deep knowledge and best practice experience with the client’s domain expertise, we are able to deliver technology solutions quickly, efficiently and as stress free as possible. We keep things simple and have a ruthless More ❯

within the team Good communication and time management Supportive of business direction and receptive to change Apply if you have: Proficiency with fundamental front-end languages such as TypeScript, JavaScript, SCSS & HTML Familiarity with other JavaScript frameworks; Node.js, React.js Understanding of eCommerce Any experience with Commerce Platforms, CMS tools Any experience with Cloud computing, AWS, GCP, Azure What to expect More ❯

weeks) The second step includes a selection of more advanced courses to get you up to speed. Learn the Command Line (1.5 weeks) Learn Git & GitHub (1.5 weeks) Learn JavaScript (1.5 weeks) Learn Python 3 (1.5 weeks) JavaScript forms the foundation of almost everything you see on the Internet, so it will be essential! Python is highly versatile. You can More ❯

weeks) The second step includes a selection of more advanced courses to get you up to speed. Learn the Command Line (1.5 weeks) Learn Git & GitHub (1.5 weeks) Learn JavaScript (1.5 weeks) Learn Python 3 (1.5 weeks) JavaScript forms the foundation of almost everything you see on the Internet, so it will be essential! Python is highly versatile. You can More ❯

weeks) The second step includes a selection of more advanced courses to get you up to speed. Learn the Command Line (1.5 weeks) Learn Git & GitHub (1.5 weeks) Learn JavaScript (1.5 weeks) Learn Python 3 (1.5 weeks) JavaScript forms the foundation of almost everything you see on the Internet, so it will be essential! Python is highly versatile. You can More ❯

weeks) The second step includes a selection of more advanced courses to get you up to speed. Learn the Command Line (1.5 weeks) Learn Git & GitHub (1.5 weeks) Learn JavaScript (1.5 weeks) Learn Python 3 (1.5 weeks) JavaScript forms the foundation of almost everything you see on the Internet, so it will be essential! Python is highly versatile. You can More ❯

weeks) The second step includes a selection of more advanced courses to get you up to speed. Learn the Command Line (1.5 weeks) Learn Git & GitHub (1.5 weeks) Learn JavaScript (1.5 weeks) Learn Python 3 (1.5 weeks) JavaScript forms the foundation of almost everything you see on the Internet, so it will be essential! Python is highly versatile. You can More ❯

weeks) The second step includes a selection of more advanced courses to get you up to speed. Learn the Command Line (1.5 weeks) Learn Git & GitHub (1.5 weeks) Learn JavaScript (1.5 weeks) Learn Python 3 (1.5 weeks) JavaScript forms the foundation of almost everything you see on the Internet, so it will be essential! Python is highly versatile. You can More ❯

weeks) The second step includes a selection of more advanced courses to get you up to speed. Learn the Command Line (1.5 weeks) Learn Git & GitHub (1.5 weeks) Learn JavaScript (1.5 weeks) Learn Python 3 (1.5 weeks) JavaScript forms the foundation of almost everything you see on the Internet, so it will be essential! Python is highly versatile. You can More ❯