226 to 250 of 341 ECMAScript Jobs in London

complexity, make evidence-based decisions and drive continuous improvement.\ N\n\nCorporate Actions domain experience is strongly preferred.\ N\n\nGroovy/Spock and JavaScript/TypeScript with Angular for full-stack contexts preferred\ N\n\nFinancial services background with risk and controls in regulated environments preferred\ N\n\nHow … ownership (build, test, deploy, monitor, iterate); growth mindset with continuous learning and knowledge sharing.\ N\n\nCode: Java 17/21 (Spring, Maven), Groovy, JavaScript/TypeScript (Angular)\ N\n\nTesting: JUnit, Spock\ N\n\nArchitecture: Microservices\ N\n\nDeployment: Private Cloud (VMs/containers)\ N\n\nTooling: GitLab ...

proficiency in React and its core principles. \n Solid grasp of Web fundamentals:\n \n HTML5 (Semantics & Structure) \n CSS (Responsive Design, Specificity) \n JavaScript ES6 \n General Networking ( IP & DNS, Caching) \n\n\n Proficient with Chrome Developer Tools or browser equivalent. \n Experience with version control tools … with Node.js \n Worked with GraphQL APIs \n Feature flagging/AB testing \n Appreciation/Exposure to React Native \n Knowledge of other JavaScript frameworks like Angular, Vue, Next.js, Gatsby. \n Familiarity with agile methodologies beyond Scrum. \n Delivery experience on cloud platforms and familiarity with AWS \n Experience ...

written communication skills. Strong proficiency in React and its core principles. Solid grasp of Web fundamentals: HTML5 (Semantics & Structure) CSS (Responsive Design, Specificity) JavaScript ES6 General Networking (HTTP, IP & DNS, Caching) Proficient with Chrome Developer Tools or browser equivalent. Experience with version control tools (VCS), preferably Git. Experience with Docker. … Experience with GraphQL Experience with Node.js Worked with GraphQL APIs Feature flagging/AB testing Appreciation/Exposure to React Native Knowledge of other JavaScript frameworks like Angular, Vue, Next.js, Gatsby. Familiarity with agile methodologies beyond Scrum. Delivery experience on cloud platforms and familiarity with AWS Experience with Design systems ...

Full Stack Software Engineer Tech : AWS, NodeJS, TypeScript, JavaScript, ReactJS, React Native (back end leaning) Why? start-up financial services, revolutionising the industry Start : ASAP Inside IR35 £400 day rate Location : Hybrid - 1-3 days in the office (Central London) Our Client A start-up FinTech is launching credit card … back end leaning) Expertise in Node.js and AWS Lambda for serverless backend services. Proficiency in React with Next.js for frontend development. Proficiency in TypeScript, JavaScript and experience with infrastructure as code using Terraform. Beneficial experience of React Native Understanding of RESTful APIs and web application architecture. Experience in a start ...

Python, Dashboards, Data Visualisation, Cloud, Javascript McGregor Boyall have a greenfield development opportunity with a leading quant investment manager. The team is currently building a new, bespoke application for the Operations function of the fund. You'd be developing automation systems for trade processing workflows, creating custom data visualization tools ...

London. This role offers the chance to shape product development and directly impact user engagement. The ideal candidate will work with technologies like JavaScript (Node, React) and Ruby, contribute to expanding APIs, and take part in the interview process that ensures a fit with the team. The position offers ...

blockers impacting delivery and reliability Mentor engineers and uplift hybrid engineering capability What You Bring Strong production experience with React Native at scale Excellent JavaScript/TypeScript and modern React knowledge Working knowledge of Swift and Kotlin Experience integrating React Native into native mobile apps Strong understanding of mobile performance ...

drive innovation across customer platforms. Their ideal candidate would be experienced in: • ServiceNow Architecture & Solution Design • ITSM, ITOM, HRSD • ServiceNow Integrations & Custom Applications • JavaScript, HTML, CSS • Technical Leadership & Stakeholder Management • ServiceNow CAD/CIS Certifications (preferred) What's in it for you? • Work on large-scale digital transformation programmes • ServiceNow ...

3+ years of hands-on SEO experience, with a strong technical focus Proven experience delivering successful technical SEO strategies A solid understanding of HTML, JavaScript, schema markup, redirects, and page speed optimisation Strong analytical and problem-solving skills Ability to work independently and manage projects end-to-end Comfortable communicating ...

3+ years of hands-on SEO experience, with a strong technical focus Proven experience delivering successful technical SEO strategies A solid understanding of HTML, JavaScript, schema markup, redirects, and page speed optimisation Strong analytical and problem-solving skills Ability to work independently and manage projects end-to-end Comfortable communicating ...

Skills in Creating Engaging & Compelling Technical Social Media Content Cyber Security & Tech: Solid Understanding of Security Operations. Verifiable Comfort with APIs, LLMs & Frontend Code (JavaScript/React) Cross - Functional Execution: Seamless Collaboration across Sales, Product & Success Proven Understanding & Experience of Cyber Security Fundamentals & How Security Teams work in 2026 Responsibilities ...

openness to feedback. Strong organisational skills with the ability to work on multiple tasks. Basic knowledge of front-end technologies (HTML/CSS/JavaScript) is desirable. Previous experience is Contentsquare and or Dynamic Yield is desirable. Please note this is a maternity cover contract. Applications close 29th June. Liberty ...

customer-facing engineers. Have led high‐pressure technical projects from prototype to production. Write and review production‐grade code across frontend and backend using Javascript or Python. Simplify complex work and make fast, sound decisions under pressure. Elevate team performance through clarity, not process. Operate with urgency in ambiguous ...

proactive, solution-focused mindset Strong ownership, accountability, and the ability to challenge implementation Advantageous Skills Front-end development skills in HTML, CSS, and JavaScript Creative or design capabilities Experience supporting landing page development Experience with server-side tracking, CAPI, S2S, or Reporting APIs Experience working in the iGaming, betting, online ...

across both technical and non-technical teams Advantageous Skills The following would be considered an advantage: Front-end development skills in HTML, CSS, and JavaScript Creative or design capabilities Experience supporting landing page development Experience with server-side tracking, CAPI, S2S, or Reporting APIs Experience working in the iGaming, betting ...

customer‐facing engineers. Have led high‐pressure technical projects from prototype to production. Write and review production‐grade code across frontend and backend using JavaScript or Python. Simplify complex work and make fast, sound decisions under pressure. Elevate team performance through clarity, not process. Operate with urgency in ambiguous ...

Lead PHP Developer PHP Laravel/Symfony/CodeIgniter; HTML, CSS, SQL/MySQL, AWS inc AI Search; Javascript Vue.js, React.js; Full Stack/Full Lice Cycle, Professional Services/Finance Systems. Permanent, London (Hybrid 2/3), £130k - £150k (On Experience) +Benefits Lead PHP Developer/Senior Web Developer … system via APIs Undertake code reviews across PHP, Laravel, Symfony, CodeIgniter, Go/Golang (to a lesser degree), SQL/MySQL, HTML, CSS and Javascript (inc React.js and Vue.js) Architect, build, and deploy scalable, cloud-native, AI-powered data-driven products in AWS Drive the integration of AI, automation, agents ...

that you will be responsible for will have a global reach, impacting millions of customers. Some of the tech we are using at scale: Javascript, Typescript, Node.JS, GraphQL, REST, Kafka, Azure Cloud, Redis, Varnish Cache, Apollo Federation, Docker, Kubernetes etc. About the team Tesco s xAPI (Experience API) powers Tesco … sustainably as a team Tesco has a do the right thing mentality We promote flexible working Job Responsibilities Use your in-depth knowledge of JavaScript, Typescript, Node.JS, cloud and the backend services ecosystem to develop, and deploy scalable backend systems. Work with product managers to understand business/product requirements. ...

that you will be responsible for will have a global reach, impacting millions of customers.\ N \nSomeof the tech we are using at scale: Javascript, Typescript, Node.JS, GraphQL, REST, Kafka, Azure Cloud, Redis, Varnish Cache, Apollo Federation, Docker, Kubernetes etc.\ N \nAbout the team\ NTesco’s xAPI (Experience API) powers … Tesco has a “do the right thing” mentality\ N⁃ We promote flexible working\ N \nJob Responsibilities\ N \n - Use your in-depth knowledge of JavaScript, Typescript, Node.JS, cloud and the backend services ecosystem to develop, and deploy scalable backend systems.\ N - Work with product managers to understand business/product ...

customize Power Pages (formerly Power Apps Portals) for external-facing web applications Develop end-to-end solutions across the stack, including frontend (HTML, CSS, JavaScript) and backend (.NET, C#, Web APIs) Configure and customize Dynamics 365 modules such as Sales, Customer Service, and Marketing Create and manage Dataverse tables, relationships … activities, and integrations using C# and .NET Build and maintain RESTful APIs and integrations with external systems Customize Power Pages using Liquid templates, FetchXML, JavaScript, and Bootstrap Implement role-based access and security within Dynamics 365 and Power Pages Develop Power Platform solutions, including Power Apps (Model-driven & Canvas), Power ...

customize Power Pages (formerly Power Apps Portals) for external-facing web applications Develop end-to-end solutions across the stack, including frontend (HTML, CSS, JavaScript) and backend (.NET, C#, Web APIs) Configure and customize Dynamics 365 modules such as Sales, Customer Service, and Marketing Create and manage Dataverse tables, relationships … activities, and integrations using C# and .NET Build and maintain RESTful APIs and integrations with external systems Customize Power Pages using Liquid templates, FetchXML, JavaScript, and Bootstrap Implement role-based access and security within Dynamics 365 and Power Pages Develop Power Platform solutions, including Power Apps (Model-driven & Canvas), Power ...

.NET Developer, .NET 10.0, C# 14, Agile - London (Tech stack: .NET Developer, .NET 10.0, ASP.NET Core, C# 14, Blazor, JavaScript, React, Microservices, Azure, ASP.NET Core Web API, Agile, Azure SQL, Programmer, Full Stack Engineer, Architect, .NET Developer) We are pleased to announce the arrival … should have commercial experience with: .NET, .NET Core, C#, Azure SQL and Agile. Full training will be provided into: .NET 10.0, C# 14, Blazor, JavaScript, React, Microservices, Azure, ASP.NET Core Web API, Agile, Azure SQL, Node.js, Elasticsearch and MongoDB. If you are dedicated to the youthful optimism of problem solving ...

have a hands on experience with Java, Spring Boot, Python and Microservices and have a strong proficiency in multiple programming languages such as Python, Javascript or similar Salary - Up to £75,000 Location - Fully Remote Key Experience Extensive experience in full-stack software engineering, including design, development, testing, and deployment. … polyglot is preferred. Strong understanding of software development methodologies such as Agile, TDD and DevOps. Some proficiency in multiple programming languages such as Python, JavaScript, or similar. Extensive experience writing well-tested code. Good knowledge of cloud platforms (e.g., AWS, Azure, GCP) and infrastructure as code Experience with CI/ ...

Graduate .NET Developer - Investment Bank - London (Tech stack: Graduate .NET Developer, .NET 10.0, ASP.NET Core, C# 14, Blazor, JavaScript, React, Microservices, Azure, ASP.NET Core Web API, Agile, Azure SQL, Programmer, Full Stack Engineer, Architect, Graduate .NET Developer) Our client is the world's most respected banking institution. Their story dates … C# or C#.NET winforms) and Azure SQL. Our client offers training in: Our client offers training in: .NET 10.0, ASP.NET Core, C# 14, Blazor, JavaScript, React, Microservices, Azure, ASP.NET Core Web API, Agile, Azure SQL, Node.js, Elasticsearch and MongoDB. This is a truly amazing opportunity to work for a prestigious ...

.NET Developer, .NET 10.0, C# 14, Azure SQL - Investment Bank - London (Tech stack: .NET Developer, .NET 10.0, ASP.NET Core, C# 14, Blazor, JavaScript, React, Microservices, Azure, ASP.NET Core Web API, Agile, Azure SQL, Programmer, Full Stack Engineer, Architect, .NET Developer) Our client is the world's most respected banking institution. … skill set that encompasses: .NET, .NET Core, C# and Azure SQL. Our client offers training in: .NET 10.0, ASP.NET Core, C# 14, Blazor, JavaScript, React, Microservices, Azure, ASP.NET Core Web API, Agile, Azure SQL, Node.js, Elasticsearch and MongoDB. This is a truly amazing opportunity to work for a prestigious banking ...