201 to 225 of 2,115 ECMAScript Jobs in London

enhance our engineering practices. Requirements Desired Skills & Experience: Excellent problem-solving and analytical skills, with experience applying modern software design patterns. We work full stack and so proficiency with JavaScript (ES6+), React and Typescript along with a good understanding of (or willingness to learn) HTML and CSS is a big plus. Familiarity with modern architectural patterns such as micro-frontends More ❯

SOLID and Design Patterns. Strong background in software engineering with hands-on experience in developing, evaluating, and deploying complex systems. Proficiency with relevant programming languages and frameworks such as JavaScript (ES6+), React, Typescript, Kotlin, Java, Scala, C# or other relevant backend technologies. Familiarity with modern architectural patterns such as microservices, micro-frontends. Ability to write, maintain, test, and deploy scalable More ❯

or C++ or an interpreted language such as Python and experience with concurrency and memory management. Responsive web development, with professional React/Angular/Redux experience and advanced JavaScript proficiency. NoSQL databases such as MongoDb and Elastic Search. Designing enterprise-level applications, or analyzing raw data sets, using Snowflake Preferred Qualifications Knowledge or interest in trading technologies in the More ❯

of professional experience in web development, with a strong portfolio of complex, scalable, and high-performance web applications Expert-level proficiency in modern front-end technologies including HTML5, CSS, JavaScript, AJAX, and JSON Strong back-end development skills using languages and frameworks such as PHP, Python, Node.js or other languages Deep understanding of databases, both SQL (e.g., MySQL, PostgreSQL) and More ❯

our back-end technology stack (C#, .Net) Strong experience working within a Cloud software engineering environment, especially using Amazon Web Services Good experience developing microservices and APIs Front-End JavaScript Frameworks, especially Angular Knowledge and application of software engineering practices (e.g. Unit testing, TDD, CI/CD, SOLID, BDD etc.). Proven ability to work as part of an Agile More ❯

a technical perspective. Legacy code or experience working with large, complex codebases is preferred. ASP.NET/.NET CORE MVC, WPF. Experience of web-related technologies (HTML, XML, CSS, JSON, JavaScript, jQuery). MS SQL knowledge is a must. Strong grasp of SOLID design principles, with recent experience implementing in day-today software development practices Entity Framework. Azure knowledge - (blobs, service More ❯

or C++, or an interpreted language such as Python and experience with concurrency and memory management. Responsive web development, with professional React/Angular/Redux experience and advanced JavaScript proficiency. NoSQL databases such as MongoDb and Elastic Search. Trading system integration architectures and protocols (e.g. FIX), or other relevant financial services software engineering experience. Preferred Qualifications Knowledge or interest More ❯

.NET). - Experienced with Generative AI coding assistants (Amazon Q Developer, GitHub Copilot), automation/scripting (PowerShell, Terraform, Python), and database migration/modernization. - Experience in UI development using JavaScript/TypeScript frameworks such as Angular and React, plus knowledge of security and compliance standards (HIPAA, GDPR). - Conducts technical workshops, training, and knowledge-sharing; contributes to blogs or open More ❯

backend systems in a production environment. 3+ years of hands-on experience with modern software architecture and scalable frameworks. Proficiency in Java (Spring Boot), Python, or similar. Proficiency in JavaScript/TypeScript with frameworks like React (preferred), Angular, Vue, or similar. Solid understanding of scalable, service-oriented architectures in a cloud or hybrid setting. Experience with PostgreSQL and/or More ❯

use cases. Experience in consuming and architecting AI solutions, including workflow tooling, frameworks and SDKs. Expertise in Node.js and secondarily Java and/or .NET. Expertise in the latest JavaScript frameworks such as React, Next.js and Node.js. Expertise in Microservices, MACH, ‘JAMStack’, Serverless and event-driven architectures. Expertise in code distribution and package management with the npm registry. Expertise in More ❯

is essential, VBA/Python knowledge is valuable, additional languages such as Java would be beneficial. Strong understanding of relational databases (MS Sql/Oracle). Experience in frontend JavaScript frameworks like React, Angular or Node. Experience within Asset Management/Investment Banking is essential. Strong passive investment related product knowledge with exposure to Index, Passive/Synthetic and/ More ❯

to and learning from our knowledgebase Mentoring less experienced members of the team to facilitate their professional growth The primary technologies we use include Python, Django, HTML/CSS, JavaScript, Terraform, AWS, Docker, Postgres, Redis, GitHub Actions and Git. Additionally, we support some legacy and smaller tools using VBA, C# and R Requirements The selection process will focus on technical More ❯

and interest) in working across the stack in client and server tech, backed up with practical experience and portfolio Experienced with web technologies and services, including HTML5, REST, JSON, JavaScript, Docker, Kubernetes, oauth etc. Experienced with Linux based servers, particularly those that run applications in Docker Strong experience with Amazon Web Services (AWS), or similar, certification or qualifications are desirable More ❯

existing tools, frameworks, and engineering practices What You Bring 4-5+ years of professional software engineering experience Strong foundation in object-oriented programming and system design Experience in JavaScript, TypeScript, HTML, CSS, and a modern frontend framework (e.g., React, Angular, Vue) Backend experience with Java, Go, Python (Django), C#, Kotlin, or Scala Experience with distributed systems, event streaming (e.g. More ❯

geographies Work with outside contractors, including Human Made, when designing and developing the news sites Candidate Profile 4+ years of professional WordPress experience in an Agile team environment using JavaScript, PHP, SQL, HTML, and CSS to build and deploy WordPress applications Experience developing scalable and configurable web applications using WordPress. Experience with Altis (managed WordPress platform) from Human Made a More ❯

Good experience in agile delivery and ceremonies e.g. sprint planning, daily scrum, retrospectives. Good Knowledge of DevOps toolchain e.g. Jira, Bitbucket, Bamboo, Artefactory. Knowledge of C#/.NET, Python, Javascript and other programming languages is beneficial. Knowledge of containerisation, Docker and Kubernetes for PaaS workloads is beneficial. Knowledge of Redhat OpenShift is beneficial. Skills set and Core Competencies Required for More ❯

geographies Work with outside contractors, including Human Made, when designing and developing the news sites Candidate Profile 4+ years of professional WordPress experience in an Agile team environment using JavaScript, PHP, SQL, HTML, and CSS to build and deploy WordPress applications Experience developing scalable and configurable web applications using WordPress. Experience with Altis (managed WordPress platform) from Human Made a More ❯

cloud services), although experience with any cloud technology is appreciated. Experience withremote device software updating tools, such as Mender. What you'll do Develop robust and scalable Typescript/Javascript to contribute towards the goals of the team. Work collaboratively with colleagues to consult upon, make and record evidence based architectural decisions. Conduct code reviews and champion high coding standards More ❯

least one of the following scripting languages; Python, GO, PowerShell, Bash, Groovy Programming language with a working knowledge in at least one of Java, C# (.NET Framework/Core), JavaScript (Node.js), Ruby, C++ Developer tooling; Full stack CI/CD, GitLab, Jenkins, Sonatype Nexus Knowledge and working experience of containerising application components including writing DockerFiles and deploying to Kubernetes Deep More ❯

architectural quality with short-term delivery needs through sound technical judgement Excellent Engineering skills: Capturing requirements, writing specifications for complex systems to be constructed Software development languages: C#/JavaScript/T-SQL/Markdown/Html+CSS/LESS/Powershell/YAML/Python Breadth and depth of coverage with particular strength in Web-based UI/.NET/ More ❯

At Clarion, our people are at the absolute heart of what we do. We're proud that our core values of PASSION , CARE , IMAGINATION , and TRUST define the way we carry out our work across all of our exhibitions and More ❯

Senior Front End Developer/Engineer (JavaScript Vue.js) London to £100k Do you enjoy working with a range of programming languages? You could be progressing your career in a senior, hands-on Front End Developer role at a scale-up tech company, that enables smart matching for commercial van drivers and consumers, via job bidding and route optimisation, streamlining processes … Agile technology team to design and develop, troubleshoot and solve complex software issues to help scale and future proof the business. You'll focus on front end components using JavaScript and Vue.js, there's a range of other tech in the stack (TypeScript, Node.js, Java, Python and of course a bit of legacy PHP!), you'll be encouraged to explore … and the other two work from home. When in the office you can enjoy the onsite gym, barista coffee and free breakfast. About you: You have strong front end JavaScript development skills You have experience with JavaScript frameworks they use Vue.js but Angular or React experience is fine You're product focussed with good business acumen You have a good More ❯

Senior Front End Developer/Engineer (JavaScript Vue.js) London to £100k Do you enjoy working with a range of programming languages? You could be progressing your career in a senior, hands-on Front End Developer role at a scale-up tech company, that enables smart matching for commercial van drivers and consumers, via job bidding and route optimisation, streamlining processes … Agile technology team to design and develop, troubleshoot and solve complex software issues to help scale and future proof the business. You'll focus on front end components using JavaScript and Vue.js, there's a range of other tech in the stack (TypeScript, Node.js, Java, Python and of course a bit of legacy PHP!), you'll be encouraged to explore … and the other two work from home. When in the office you can enjoy the onsite gym, barista coffee and free breakfast. About you: You have strong front end JavaScript development skills You have experience with JavaScript frameworks they use Vue.js but Angular or React experience is fine You're product focussed with good business acumen You have a good More ❯

Senior Front End Developer/Engineer (JavaScript Vue.js) London to £100k Do you enjoy working with a range of programming languages? You could be progressing your career in a senior, hands-on Front End Developer role at a scale-up tech company, that enables smart matching for commercial van drivers and consumers, via job bidding and route optimisation, streamlining processes … Agile technology team to design and develop, troubleshoot and solve complex software issues to help scale and future proof the business. You'll focus on front end components using JavaScript and Vue.js, there's a range of other tech in the stack (TypeScript, Node.js, Java, Python and of course a bit of legacy PHP!), you'll be encouraged to explore … and the other two work from home. When in the office you can enjoy the onsite gym, barista coffee and free breakfast. About you: You have strong front end JavaScript development skills You have experience with JavaScript frameworks they use Vue.js but Angular or React experience is fine You're product focussed with good business acumen You have a good More ❯

Full Stack Developer/Engineer (JavaScript Vue.js Python) London to £100k Do you enjoy working with a range of programming languages? You could be progressing your career in a senior, hands-on Full Stack Developer role at a scale-up tech company, that enables smart matching for commercial van drivers and consumers, via job bidding and route optimisation, streamlining processes … technology team to design and develop, troubleshoot and solve complex software issues to help scale and future proof the business. You'll work across the full tech stack using JavaScript and Vue.js on the front end, there's a range of other tech in the stack (TypeScript, Node.js, Java, Python and of course a bit of legacy PHP!), you'll … and the other two work from home. When in the office you can enjoy the onsite gym, barista coffee and free breakfast. About you: You have strong full stack JavaScript development skills and are happy to work on projects that could be weighted either way or a 50/50 split You have experience with JavaScript frameworks they use Vue.js More ❯