76 to 100 of 710 ECMAScript Jobs in London

collaborative development. Energized by fast-paced, regulated environments where speed, quality, and adaptability matter. Your Technical Toolkit React/React Native/TypeScript JavaScript/HTML/CSS Figma/Vercel/Git Testing frameworks: Jest, Cypress, Appium CI/CD pipelines: GitHub Actions, Harness, Github Desirable Familiarity with RDBMS ...

including presentation skills. Able to communicate to stakeholders at all levels of the organisation and 3rd parties . Experience working with the following technologies: JavaScript, React, C# . NET , Python, SQL, APIs , Azure, Power Platform, SaaS , PaaS , IaC . Exposure to and understanding of emerging technologies e.g. AI, LLMs, Machine ...

Thrives in fast-paced, regulated environments where speed, compliance, and innovation go hand-in-hand. Your Technical Toolkit React/React Native/TypeScript JavaScript/HTML/CSS Figma/Git Testing frameworks : Jest, Cypress, Appium CI/CD pipelines : GitHub Actions, CircleCI, Bitrise Cloud-native architecture : AWS, Docker ...

schema design, domain-driven architecture, and concurrency. Proven experience developing production-grade RESTful APIs ideally with an API-first approach. Some proficiency in JavaScript/TypeScript-based frontend development, with extensive expertise in React. This includes a deep understanding of the DOM, component design, CSS, and state management. Familiarity with ...

schema design, domain-driven architecture, and concurrency. Proven experience developing production-grade RESTful APIs ideally with an API-first approach. Some proficiency in JavaScript/TypeScript-based frontend development, with extensive expertise in React. This includes a deep understanding of the DOM, component design, CSS, and state management. Familiarity with ...

following tech stack and be proactive in learning new technologies. You will have a learning and development budget to support this. Python, Java, TypeScript, JavaScript React, Angular, React Kubernetes (k8s) Docker AWS, Azure Elasticsearch, MERN, Neo4J Benefits Excellent company benefits including significant pension contributions, BUPA, equity and training allowance. ...

Senior Software Engineer Key Technologies: C#, .NET, React, JavaScript, Typescript, AWS, Docker City of London, United Kingdom Perm Role: £80,000 - £120,000 Harrington Starr has partnered with a Global Financial Services Vendor and they are looking for a Senior C#, .NET Software Engineer to join their growing team! This ...

real difference for colleagues and customers alike. What You’ll Do: Translate business requirements into working, user-focused solutions Design and develop C#, plugins, JavaScript, Power Apps, Power Automate, SSIS, and SSRS solutions Provide technical guidance and mentorship to junior developers Participate in SCRUM ceremonies and influence platform architecture Ensure ...

real difference for colleagues and customers alike. What You’ll Do: Translate business requirements into working, user-focused solutions Design and develop C#, plugins, JavaScript, Power Apps, Power Automate, SSIS, and SSRS solutions Provide technical guidance and mentorship to junior developers Participate in SCRUM ceremonies and influence platform architecture Ensure ...

backend systems Build cloud-native solutions on Azure with containerization Implement RESTful APIs using Java integrated with banking platforms Develop full-stack features with JavaScript frameworks (Angular) Champion CI/CD, TDD/BDD, and engineering best practices Optimize Java applications for high-volume, high-availability systems What You Need ...

backend systems Build cloud-native solutions on Azure with containerization Implement RESTful APIs using Java integrated with banking platforms Develop full-stack features with JavaScript frameworks (Angular) Champion CI/CD, TDD/BDD, and engineering best practices Optimize Java applications for high-volume, high-availability systems What You Need ...

emerging AI powered tools being built in house. Your role will directly impact the performance, stability, and user experience of solutions built with Javascript, Blazor, C#, .NET , and hosted on Azure (Azure DevOps). What experience you’ll need: Extensive experience in manual and automated testing of mobile & SaaS applications ...

emerging AI powered tools being built in house. Your role will directly impact the performance, stability, and user experience of solutions built with Javascript, Blazor, C#, .NET , and hosted on Azure (Azure DevOps). What experience you’ll need: Extensive experience in manual and automated testing of mobile & SaaS applications ...

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/ ...

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/ ...

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 ...

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 ...

Therefore you will get the benefit of exposure to the front office, working in a FinTech type delivery model, using the latest versions of JavaScript, React.JS & C# As they provide best in class trading applications to both internal traders as well as external customers. This Senior C# and React Full ...

NEED THE SENIOR SOFTWARE ENGINEER TO HAVE.... Current enhanced DV clearance Experience with at least one of the following: Java, Python, C++, C#, .NET, JavaScript, React Experience mentoring juniors or leading teams is nice to have but not essential Experience/Knowledge of automation IT WOULD BE NICE ...

NEED THE SENIOR SOFTWARE ENGINEER TO HAVE.... Current enhanced DV clearance Experience with at least one of the following: Java, Python, C++, C#, .NET, JavaScript, React Experience mentoring juniors or leading teams is nice to have but not essential Experience/Knowledge of automation IT WOULD BE NICE ...

Core and Web APIs. 3+ years’ experience developing front-end applications using React, or similar frameworks, but React is the strong preference here. Strong JavaScript and CSS skills with an eye for design and UX. Experience with SQL and relational databases such as Oracle, SQL Server, or PostgreSQL. Knowledge ...

Core and Web APIs. 3+ years’ experience developing front-end applications using React, or similar frameworks, but React is the strong preference here. Strong JavaScript and CSS skills with an eye for design and UX. Experience with SQL and relational databases such as Oracle, SQL Server, or PostgreSQL. Knowledge ...

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 ...

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 ...

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 ...