1 to 25 of 50 JavaScript Jobs in the City of London

Senior Full-Stack Developer

Location
City Of London, England, United Kingdom
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 ...

Test Analyst

Location
City Of London, England, United Kingdom
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 ...

Sr. Full Stack Developer (Java, React & Python)

Location
City Of London, England, United Kingdom
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 ...

Senior Engineer (Full-Stack)

Location
City Of London, England, United Kingdom
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 ...

Senior Software Engineer, Portfolio Management Capabilitities

Location
City Of London, England, United Kingdom
Managers, Quants and other stakeholders to understand requirements and translate business needs into technical solutions.Required Skills and ExperienceStrong software engineering skills in TypeScript/JavaScript, Java and Python.Experience with React, Redux and Node.js.Experience building Java services using frameworks such as Spring Boot.Strong understanding of software design, API development and data ...

Senior Software Engineer (Python/Terraform/AWS)

Location
City Of London, England, United Kingdom
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 ...

Principal Engineer - Full Stack Java

Location
City Of London, England, United Kingdom
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. ...

GenAI Full Stack Engineer - Managing Consultant

Hiring Organisation
83zero Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£80,000
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 ...

Technical Lead (AI & MACH)

Location
City Of London, England, United Kingdom
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 ...

Principal Software Engineer / Principal AI Engineer

Location
City Of London, England, United Kingdom
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 ...

Agentic AI / GenAI Consultant | From PoC to Production

Location
City Of London, England, United Kingdom
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 ...

Senior Software Development Engineer

Location
City Of London, England, United Kingdom
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 ...

Senior Software Engineer / Senior AI Engineer

Location
City Of London, England, United Kingdom
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 ...

Principal Software Engineer / Principal AI Engineer

Location
City Of London, England, United Kingdom
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 ...

Technical Lead Software Engineer

Hiring Organisation
Spectrum IT Recruitment Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
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 ...

Microsoft Dynamics Developer - Contract

Hiring Organisation
83zero Limited
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£550 - £625 per day
configuring Microsoft Dynamics 365 Strong C#/.NET development experience Experience with Microsoft Azure and associated cloud technologies Experience building APIs and system integrations JavaScript/TypeScript experience Experience developing custom Dynamics functionality, plugins and workflows Understanding of CI/CD and modern software engineering practices Comfortable working across both ...

Software Engineer

Location
City Of London, England, United Kingdom
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 ...

AI Solutions Engineer

Hiring Organisation
DGH Recruitment
Location
City of London, London, United Kingdom
Employment Type
Permanent
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 ...

Front End Software Engineer - ACE

Location
City Of London, England, United Kingdom
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 ...

PAM Senior Engineer / Architect (Privileged Access Management)

Location
City Of London, England, United Kingdom
Entra, Azure AD, LDAP, SAML, OAuth). Experience integrating PAM platforms with HR systems, ServiceNow, and other enterprise applications. Proficiency in scripting (PowerShell, JavaScript, BeanShell) and API integration (REST, SCIM, JDBC). Excellent communication and stakeholder management skills, with the ability to explain complex technical concepts to non‐technical audiences. ...

Engineering Manager – Commercial Technology

Location
City Of London, England, United Kingdom
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 ...

Lead Engineer, Lead Developer, JavaScript, Python, Azure, AI, Co-Pilot

Hiring Organisation
Carrington Recruitment Solutions Limited
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP 105,000 Annual
Lead Engineer, Lead Developer, Full Stack Engineering, Azure, .NET, C#, City, London Lead AI Engineer/Lead AI Developer required for an exciting Professional Services organisation. This will be 3 days in the office and ...

Microsoft Power Platform Senior Developer

Location
City Of London, England, United Kingdom
experience developing PCF controls using TypeScript/React and deploying via managed solutions Strong command of Power Fx, DAX (for Power BI integration), and JavaScript/TypeScript for web resource and PCF development Deep experience with Dataverse: complex data modelling, relationships, business rules, calculated fields, rollup fields, and virtual tables … Azure Functions, Azure Logic Apps, Azure Key Vault, and Azure AD/Entra ID Familiarity with Dynamics 365 CE customisation: plugins (C#/.NET), JavaScript web resources, Ribbon Workbench, and XrmToolBox Architecture & Governance Experience designing enterprise‐grade Power Platform governance frameworks including DLP policies, CoE Toolkit deployment, and environment tiering ...

Power Platform Engineer

Location
City Of London, England, United Kingdom
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 ...

Senior ServiceNow Developer

Hiring Organisation
DGH Recruitment
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£95,000
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 ...