1 to 25 of 46 Permanent JavaScript Jobs in the City of London

high code quality by reviewing commits and automating testing in CI/CD pipelines with Git) Ability to maintainable programmes using HTML, CSS, and JavaScript, including strong understanding of programming concepts, data structures, algorithms, and user interface components within the HTML DOM Ability to read others' code Ability to work ...

NoSQL databases like Redis, DynamoDB.Good understanding of the Agile methodologies and working in Scrum/SAFE practicesFamiliarity with front-end technologies (HTML, CSS, JavaScript) is a plus.Exposure to the AI/ML techniques & methodologies is a plus.Knowledge of software development best practices, including version control (Git) and continuous integration ...

Front/Backend Engineer in Typescript in a professional environment.Front-end skillsProficient in HTML5, CSS3, and TypescriptProficient in React, Redux, ReactQueryExperience with modern JavaScript frameworks - ReactKnowledge of version control systems (Git)Understanding of cross-browser compatibilityFamiliarity with RESTful APIs, GraphQL and WebsocketsExperience with CSS pre-processors e.g. TailwindBack-end skillsProficiency ...

Dynamics. Financial Services, Banking, HR, Payroll or Finance Transformation. Performance, Accessibility, Mobile or Cloud Testing. Experience with CI/CD pipelines, Git, Java, Python, JavaScript or C# would also be beneficial. Qualifications ISTQB Foundation or Advanced Level certifications, BCS Software Testing qualifications or equivalent industry experience would be advantageous. Relevant ...

using TypeScript, leveraging frameworks such as Next.js or Vite. GenAI Frameworks: Familiarity with tools like LangChain, LangGraph, CrewAI, or Vercel AI (in Python or JavaScript). LLM experience: Practical experience with Large Language Models (LLMs) such as OpenAI, Anthropic, Mistral, or Llama, and tools like Ollama. Cloud Platforms: Proficiency ...

back-end systems. Strong SQL skills are essential, with extensive experience designing and working with large relational databases, including MS SQL Server and Sybase. JavaScript experience is desirable, with the ability to provide technical direction for front-end components and full-stack solution delivery. Python experience is good to have. ...

Services (AWS) Strong experience using GitHub Actions within a CI/CD pipeline Solid Python knowledge Experience with front‐end technologies such as JavaScript and Node Experience working with Web Application Firewall (WAF) technologies and Cloudflare features Solid working experience with Git and SQL Knowledge of Terraform and experience working ...

Required Building robust AI services and APIs using Python, FastAPI, Django or Flask, supported by strong SQL Create engaging, responsive AI products using TypeScript, JavaScript, React and Next.js Ground LLM applications in trusted business data through RAG, MCP and model integration Design multi-agent solutions using frameworks such as LangChain ...

Langflow, Tensorflow Knowledge of Infrastructure as Code, CI/CD Use of Middleware and RESTful or GraphQL APIs Microservices and MACH Architectures. HTML, CSS, Javascript frameworks such as React, or Mobile technologies such as SwiftUI, Kotlin, Flutter or React‐native CMS, DXPs and common MarTech SaaS products integration Atlassian, Azure ...

problem, extracting defined spec, and prioritises shipping validated outcomes over perfect solutions, moving pilots to production at pace. Languages: Python, Java, TypeScript/JavaScript, SQL and relevant AI SDKs. Leadership and delivery management: Plans and sequences work, manages scope, dependencies and priorities, removes blockers, and drives delivery to keep innovation ...

address issues with empathy and a sense of urgency.Undertake any other reasonable activities required by management.Required SkillsExcellent proficiency in PythonExperience with TypeScript or Javascript, and Rust would be a strong plusFamiliarity with C++ is a plus.Experience in Financial domain is a plus.Strong command of a typed, object-oriented programming language.Deep ...

SDLC, TDD and code review. Data: Working with relational, columnar and vector stores, grounded in sound data-modelling principles. Languages: Python, Java, TypeScript/JavaScript, SQL and relevant AI SDKs. Communication: Clear written and verbal communication with technical peers and stakeholders. Measurement: Instrumenting solutions to capture usage, productivity and quality ...

problem, extracting defined spec, and prioritises shipping validated outcomes over perfect solutions, moving pilots to production at pace. Languages: Python, Java, TypeScript/JavaScript, SQL and relevant AI SDKs. Leadership and delivery management: Plans and sequences work, manages scope, dependencies and priorities, removes blockers, and drives delivery to keep innovation ...

experience in one or more of the following technologies but who is also open minded about learning new languages and technologies. Java, Python, JavaScript, TypeScript Angular, React, Vue Docker, Kubernetes AWS, Azure MERN, Elasticsearch, Neo4J Salary and Benefits A salary of £40-85k with an exciting array of projects ...

What you'll bring Experience as a Technical Lead, Lead Engineer or Senior Engineer with significant technical ownership. Strong hands-on development skills with JavaScript/TypeScript and Node.js. Experience building APIs, backend services and cloud-based applications. Familiarity with modern frontend frameworks such as React or Vue. A solid ...

performance issues within the application. Your Profile Strong commercial experience developing production applications with React and TypeScript, preferably with Next.js. Excellent knowledge of modern JavaScript/TypeScript, HTML and CSS. Strong understanding of React fundamentals, component architecture, hooks, state management and modern frontend application patterns. Experience designing and building reusable ...

Model Context Protocol, Agent‐to‐Agent and LLM selection (advantage). Software development experience, including proficiency in one or more of the following: Python, JavaScript, JSON, React and related scripting, .NET technologies (C#, ASP.NET), REST services, and PowerShell. Desirable: experience with Power Pages. EU Characteristics that can spell success ...

Actions, access controls, notifications, forms and catalog items. Integration experience with REST, SOAP, APIs, IntegrationHub, MID Server and Import Sets. Working knowledge of JavaScript, Glide APIs, HTML, CSS and XML. Experience developing custom scoped applications and workflows across areas such as ITSM, CMDB, Security Operations, Workplace Service Delivery, Contract Management ...

Strong experience with the Microsoft AI ecosystem, including: Copilot Studio, Azure AI Foundry and Azure DevOps - Software development experience, ideally using Python. - Knowledge of JavaScript or other development languages would be advantageous. - Strong understanding of: Large Language Models (LLMs), Natural Language Processing (NLP), Machine Learning fundamentals and Prompt engineering. - Experience ...

proof-of-concept experience. Strong Microsoft AI technology experience, particularly Copilot Studio, Azure AI Foundry and Azure DevOps. Software development capability, ideally with Python; JavaScript or other development languages would be an advantage. A solid technical understanding of LLMs, NLP, machine learning fundamentals and prompt engineering. Experience designing prompts, grounding ...

Desirable Skills Experience integrating Seismic with Salesforce, Microsoft Dynamics or other CRM platforms. Knowledge of Seismic LiveDocs, LivePages or automation capabilities . Experience with JavaScript, Python, C# or other languages used in enterprise integrations. Understanding of CI/CD, version control and software development best practices. Experience working with content ...

Comfort working with XML and JSON, making API calls, and reading or writing scripts to debug application logic Programming/scripting language experience, particularly JavaScript, PHP, HTML, Java, XSLT, SQL A logical, structured approach to problems and strong attention to detail The ability to explain complex topics clearly to both ...

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 ...

between technical and business contexts Analytical mindset with the ability to decompose complex, ambiguous challenges into actionable steps Programming foundation in Python, SQL, or JavaScript (academic projects, internships, or capstone work) Daily working fluency with AI development tools (ChatGPT, Claude, GitHub Copilot, Cursor), used as core tools rather than occasional ...

marketing platforms Familiarity with common platform integration methods (website tag managers, API authentication, retry/error handling, JSON, webhooks) Ability to interpret and edit JavaScript/Python code, and comfort articulating and discussing technical requests to engineers Familiarity working with or around "big data", using tools like AWS Athena ...