251 to 275 of 634 JavaScript Jobs in London

rotation (very minimal) It’s a plus if you have Programming with at least one programming language such as C, C++, C#, .Net, Java, JavaScript, HTML, XML Knowledge of the Fintech or financial services industry Knowledge of SWIFT or other payment processing Arabic, French, German, Spanish, Portuguese or other business ...

technologies (Docker, Kubernetes) and big data platforms (Databricks). Ability to analyse complex performance issues and provide actionable recommendations. Strong scripting skills (e.g., Python, JavaScript) for test automation and data analysis. Knowledge of Performance Test Strategy and defining Non-Functional Requirements. Proven experience in Performance Testing of cloud-based architectures ...

professional services, or forward deployed engineering) — this is a requirement, not a nice-to-have. You're fluent in at least one of Python, JavaScript/TypeScript, Java, or Apex — and willing to add to that list as the work demands. You've been hands-on with LLMs and prompt ...

with DevOps to enhance continuous improvements Your skills and experience Strong hands-on experience building production user interfaces with React, TypeScript and modern JavaScript, including reusable component design, state management, Application Programming Interface (API) integration and automated front-end testing Practical experience contributing to Java back-end applications, including Core ...

strategies Required Skills: Experience working with Foreign Exchange systems Strong knowledge of software QA methodologies, tools and processes Experience with Playwright Programming skills in JavaScript Strong SQL skills Hands-on experience with both white-box and black-box testing Good spoken and written English A keen eye for detail ...

/CD pipelines, alongside awareness of quality gates, release assurance and modern development practices Experience testing modern applications and services, including APIs, Java/JavaScript‐based systems and cloud or containerised environments Awareness of non‐functional testing approaches, including performance, resilience, accessibility and security testing Experience producing test evidence ...

least 6–8 years of relevant professional experience and a track record of delivering substantial digital projects. You’ll need: Strong experience with modern JavaScript or TypeScript and a contemporary front-end framework such as React or Next.js. Solid back-end development experience, including APIs, databases and server-side applications. ...

planning and knowledge transfer Skills Knowledge and Expertise Must Have ServiceNow: Strong enterprise administration, configuration and development experience. Development: Strong ServiceNow development experience using JavaScript, Glide APIs, Flow Designer, Business Rules, Client Scripts, UI Policies and Script Includes. Integrations: REST/SOAP APIs, webhooks, IntegrationHub, MID Server, JSON/ ...

technical support, developer support, or systems engineering. Experience managing and delivering against operational SLAs for enterprise accounts Strong hands-on debugging experience with JavaScript, Python, or similar languages, including the ability to read and reason through an unfamiliar codebase. Working knowledge of APIs, databases, and Git-based CI/ ...

Strong written and verbal communication, plus an organized approach to problem solving. Nice to have: basic proficiency in a scripting language such as Python, JavaScript, or another modern language. Nice to have: prior experience in a support, solutions engineering, or technical account role for AppSec, CI, or DevSecOps products. Nice ...

reliability, cost, and security. OUR MODERN TE OUR MODERN TE Our Modern Tech Stack: Experience is helpful, but not essential: Languages: Python, SQL, Terragrunt, JavaScript Cloud: AWS (primary), some GCP Warehouse & Storage: Snowflake, S3/Parquet Data & ETL: dbt, Fivetran Platform & Infra: Kubernetes, Kafka, RabbitMQ, Argo, GitHub Actions, HashiCorp Vault ...

along on decisions. To share extra context, our current tech stack includes GCP, BigQuery, Airflow, Python, SQL on the Data side and AWS, Kotlin, Javascript, Typescript on the Product side while our infrastructure is containerised with Kubernetes. Experience across those technologies or languages would be considered a bonus. ...

systems Strong understanding of interaction design principles, including usability, feedback, and system behaviour Familiarity with modern front-end approaches, including component-based development and JavaScript frameworks Strong knowledge of accessibility standards (WCAG 2.2) and practical application in interface design Ability to collaborate effectively within multidisciplinary teams, particularly with developers ...

typically 8+ years) building and shipping production software, with a record of leading complex initiatives that cross team lines. Deep expertise in TypeScript/JavaScript and Node.js, including architecting REST and/or GraphQL APIs and distributed systems. Comfort outside your home language and stack. We expect Staff engineers ...

methods, associated best practices, and related tools/frameworks (REST/JSON APIs, Postman). Experience with at least one common front-end (pure JavaScript, React, Angular, etc) and back-end (Java, .NET, Python, Node, etc) technology. Previous exposure to RFI/RFP Understanding of end-to-end payment flow. ...

with data structures, storage systems, cloud infrastructure, front-end frameworks, and other technical tools. Experience coding in programming languages, such as Java, C++, Python, JavaScript, or similar languages. To apply, please submit the following An updated resume/CV - please do so in PDF format. Thoughtful responses to our application ...

professional programming experience in backend and application environments 2+ years of experience directly managing engineers Expert-level proficiency in Python or Typescript/Javascript; strong working knowledge of modern backend & web application frameworks like FastAPI, Node, React, or Rails Direct experience applying multimodal (audio, image) AI in content production ...

experience, with at least one production system you'd be proud to walk us through. You're fluent in at least one of Python, JavaScript/TypeScript, Java, or Apex - and willing to add to that list as the work demands. You've been hands-on with LLMs and prompt ...

fraud engine mechanics. Technical Skills Coding Ability: You can code and are comfortable with web technologies. Proficiency in at least one front‐end (JavaScript, React) or back‐end language (Node.js, Python, Java, .NET, Go). API & Debugging Mastery: Expert in API‐based integrations (REST/JSON, Postman, Webhooks); able ...

both. Frontend: Commercial experience with React and TypeScript, and with building interfaces that hold up. Comfortable with CSS, including animation, and with the usual JavaScript build tooling. Backend: You’ve built and run services in production. We don’t expect Ruby or Elixir on day one, but we do expect ...

with Marketing & Commercial Data include: Salesforce Marketing Cloud Next (Advanced Edition) Salesforce Data 360 Salesforce Sales & Service Cloud Sales Collaboration & Enablement Tooling Bloomreach Marketo JavaScript/TypeScript APIs and integration technologies AWS Technologies Data platforms and integrations CI/CD pipelines and developer tooling GitHub Monitoring and observability tooling Jira ...

large telemetry datasets, and a habit of quantifying impact before proposing a fix. Proficiency in at least one of C/C++, Python or JavaScript/TypeScript, and willingness to become fluent in BrightScript. Based in or able to work from our London office Monday to Thursday, with availability ...

Elsevier is seeking a Software Engineer III to design and implement scalable applications using Java and JavaScript. You will join the Identity & Access Management team, owning authentication and authorisation infrastructure across a global product suite ...

A leading IP firm is looking to recruit an AI Software Solutions Engineer. This is a newly created role and requires an experienced AI Software Engineer with previous experience working in a professional services firm ...

Path to CTO. Please note my client is not willing to sponsor candidates and therefore I can only accept applications from candidates who are eligible to work in the UK. My client is an ambitious ...