201 to 225 of 485 JavaScript Jobs in London

Senior Finance Systems Developer

Hiring Organisation
Carta
Location
London, UK
Employment Type
Full-time
ZuoraHands-on experience with roles, permissions, page layouts, custom objects, SuiteScripts, workflows, reports, and dashboardsProficiency in SQL, CSV imports, user provisioning, role definitions, analytics, JavaScript(JS) and script schedulingStrong background in data analytics, reporting, and database management (SQL and NetSuite preferred)Familiarity with revenue recognition principles and financial reporting conceptsStrong ...

Forward-Deployed Engineer (FDE)

Hiring Organisation
NTT DATA
Location
London, UK
Employment Type
Full-time
deploying AI, ML, GenAI, LLM, RAG, agentic AI, data science, or automation solutions. Hands-on experience with programming languages and frameworks such as Python, JavaScript/TypeScript, FastAPI, Flask, React, LangChain, LlamaIndex, PyTorch, TensorFlow, or similar technologies. Experience integrating APIs, data sources, model providers, workflow tools, and cloud services into ...

Senior Interaction Designer

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent, Work From Home
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 ...

Delivery Senior Engineer

Hiring Organisation
WPP
Location
London, UK
Employment Type
Full-time
Experience supporting production workflow environments where deadlines, hand-offs,assets and approvals are managed through production systems. Experience scripting or automating production processes using JavaScript, PowerShell, Python, shellscripting or comparable automation Understanding of how production processes translate into workflow automation requirements. Experience within production, creativeoperations or workflow support. Technical aptitude ...

Senior Full Stack Engineer

Hiring Organisation
Lendable
Location
London, UK
Employment Type
Full-time
experience with Python in a web application context. You have some experience with web frameworks like FastAPI, Django or Flask. We use FastAPI.Experience with Javascript/Typescript and a modern JS framework such as React, Angular or Vue.js. We generally use React & NextJS. You can build a frontend that ...

Senior Cyber Software Engineer/ Technical Lead

Hiring Organisation
BAE Systems
Location
Greater London, United Kingdom
Employment Type
Full Time
heap distinction, compiled/interpreted languages). Proficiency with at least one solution language (e.g. C++, Java, C#) and one utility language (e.g. Python, JavaScript, Perl, PowerShell). Ability to use and configure more than one major operating system. Ability to pick up new languages and technologies easily. Ability ...

Software Engineering Specialist

Hiring Organisation
BT Group
Location
London, UK
Employment Type
Full-time
/ScriptingContinuous Integration/Continuous Deployment/Automation OrchestrationSoftware Development LifecycleGrowth MindsetI.T SecurityDesirable Skills/ExperienceSingle- or multi-tier software application development (Java, Python, JavaScript, C++, etc)Database technologies & ORM (Elastic, MySQL/MariaDB, SQL*Server, etc)Spec-driven software development & MCP use (Kiro, Claude, etc)Source-code control ...

Engineering Manager – Commercial Technology

Hiring Organisation
Financial Times
Location
Greater London, United Kingdom
Employment Type
Full Time
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 ...

SDN Presales Architect - CSP & MSP - UK

Hiring Organisation
Hewlett Packard Enterprise
Location
London, UK
Employment Type
Full-time
/EVPN, and network automation. Working knowledge of cloud networking and hybrid infrastructure. Have some level of programming skills (Java, Python, PHP, JSON, NodeJS, JavaScript, etc.). Understanding network security, segmentation, Zero Trust, and observability. Ability to troubleshoot and explain complex technical architectures. Strong presentation, whiteboarding, demonstration, and customer-facing ...

Senior Partner Engineer

Hiring Organisation
Roku
Location
London, UK
Employment Type
Full-time
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 ...

Campus - Full Time - Software Engineer - 2027 (UK - London)

Hiring Organisation
American Express
Location
London, UK
Employment Type
Full-time
backend engineering, frontend engineering, cloud engineering, mobile engineering, AI/machine learning, data engineering, API development, or full-stack product development. Familiarity with Java, JavaScript, React, TypeScript, Python, C#, Go, Kotlin, Node.js, REST APIs, SQL, Spring, or similar frameworks and tools. Exposure to cloud-native development, microservices, containerization, CI/… Preferred Qualifications: Programming experience through coursework, projects, research, internships, open-source contributions, hackathons, or extracurricular activities using one or more languages such as Java, JavaScript, Python, C#, Go, Kotlin, Node.js, or similar technologies. Interest in building software applications across web, mobile, backend, cloud, API, microservices, or full-stack environments. Exposure ...

Microsoft Power Platform Senior Developer

Hiring Organisation
Accenture
Location
London, UK
Employment Type
Full-time
DataverseProven experience developing PCF controls using TypeScript/React and deploying via managed solutionsStrong command of Power Fx, DAX (for Power BI integration), and JavaScript/TypeScript for web resource and PCF developmentDeep experience with Dataverse: complex data modelling, relationships, business rules, calculated fields, rollup fields, and virtual tablesHands … context: Azure Functions, Azure Logic Apps, Azure Key Vault, and Azure AD/Entra IDFamiliarity with Dynamics 365 CE customisation: plugins (C#/.NET), JavaScript web resources, Ribbon Workbench, and XrmToolBoxArchitecture & GovernanceExperience designing enterprise-grade Power Platform governance frameworks including DLP policies, CoE Toolkit deployment, and environment tieringUnderstanding of Microsoft ...

C# Systems Developer

Hiring Organisation
Thomas Ren Associates
Location
Croydon, Surrey, United Kingdom
Employment Type
Full-Time
Salary
£65,000 - £75,000 per annum
back up to Technical Support Provide input to technical manuals and other documentation To complete other relevant tasks as reasonably assigned Essential: C# RESTful JavaScript MS SQ Back-end development A proven track record in a similar role Good written and verbal communication skills Desirable: Financial Services knowledge Client facing ...

AI Software Engineer

Hiring Organisation
JNC Recruitment Limited
Location
Central London, London, United Kingdom
Employment Type
Permanent, Work From Home
Experienced deploying AI solutions into the Microsoft ecosystem. Experience with Copilot Studio, Azure AI Foundry and Azure DevOps. Strong Software development skills. Ideally Python, Javascript and or other. Good understanding of machine learning fundamentals Good understanding of LLMs and NLP Experience with agentic AI and ability to solutions into existing ...

Front End developer

Hiring Organisation
Talan
Location
London, UK
Employment Type
Full-time
engineering teams to improve application reliability, CI/CD, observability, security and developer tooling. Key experience: Strong Python web application development experienceReact and modern JavaScript tooling, ideally ViteDocker and CI/CD pipelinesAzure cloud experience is essential; AWS is a bonusGood knowledge of Linux, networking, security and observabilityExperience supporting scalable ...

Salesforce DevOps Engineer - SC Cleared

Location
London, United Kingdom
infrastructure as code Active SC clearance Desirable Salesforce DX and Salesforce CLI plugin development Provar or other Salesforce test automation tooling Node.js/JavaScript for Puppeteer and CLI plugin work Previous public sector delivery experience TPBN1_UKTJ ...

Salesforce DevOps Engineer - SC Cleared

Hiring Organisation
ANSON MCCADE
Location
London, UK
infrastructure as code Active SC clearance Desirable Salesforce DX and Salesforce CLI plugin development Provar or other Salesforce test automation tooling Node.js/JavaScript for Puppeteer and CLI plugin work Previous public sector delivery experience ...

AI Copilot Developer

Hiring Organisation
GCS
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£450 - £490/day Inside IR35
with very likely extension Location - Hybrid/Canary Wharf - 3 days per week in a Canary Wharf office Tech Stack Copilot Powerapps Power platform Javascript Role Development and support of low code Business applications using Power platform, M365, C#, JavaScript. You will collaborate closely with business analysts, business users ...

Junior Software Developer (Python)

Hiring Organisation
SQUAREPOINT CAPITAL
Location
London, UK
Employment Type
Full-time
technologies and develop with usAbility to work well in a fast-paced environmentNice to Have: Experience with any of C++, Rust, KDB+/q, JavaScript/TypeScript/ReactExperience with database management systems and related technologies such as SQLExperience working in an investment or financial business is useful ...

Analyst Developer Fintech Java SQL

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
overseeing a number of projects of differing scales. These could be personal or in business. Analyst Developers must have: Commercial Software Development ExperienceHTML/JavaScript/SQL/JSP/Web Services (SOAP)Previous experience with automated software testing tools would be an advantage. An interest in FinanceThis role suits ...

Junior Analyst Developer Fintech

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
overseeing a number of projects of differing scales. These could be personal or in business. Analyst Developers must have: Commercial Software Development ExperienceHTML/JavaScript/SQL/JSP/Web Services (SOAP)Previous experience with automated software testing tools would be an advantage. An interest in FinanceThis role suits ...

Senior ASP.NET MVC Developer - Kingston

Hiring Organisation
Quant Capital
Location
London, UK
Employment Type
Full-time
best training and development packages in the market, all inclusive. My client is based near Kingston in LondonASP.NET MVC, razor, c#, sql, mvc, .net, javascript, greenfield, , data, analytics, api, jquery ...

Microsoft AI Engineer

Hiring Organisation
83zero Limited
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£350 - £400 per day
knowledge-grounded AI applications AI agents and agentic workflows Microsoft Fabric Power Platform Azure Functions/Logic Apps APIs and system integrations Python, C#, JavaScript/TypeScript or similar Microsoft Entra ID/cloud security Please click apply ...

Lead Solutions Engineer (Architecture & Platform)

Hiring Organisation
Next Move Recruitment Ltd
Location
EC4V, Castle Baynard, Greater London, United Kingdom
Employment Type
Permanent
Salary
£90000 - £100000/annum Pension + Benefits
Engineer (Architecture & Platform) Requirements Strong background in software engineering, architecture or technical leadership Experience designing and delivering modern web-based platforms Strong knowledge of JavaScript/TypeScript ecosystems Experience with React, Next.js, Node.js or similar technologies Cloud platform experience, ideally AWS Strong understanding of APIs, data architecture and distributed systems ...