1 to 25 of 40 Contract JavaScript Jobs in London

Scala Engineer

Hiring Organisation
Sanderson Government and Defence
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£55 - £79 per hour
Writing clean, testable, maintainable code Participating in code reviews, pairing, and team delivery Tech Stack & Environment Backend: Scala, Java (Python desirable) Frontend: HTML, CSS, JavaScript Frameworks: Play, Spark Data: Postgres, MongoDB, Hudi Cloud: AWS (S3, ECS, Aurora, Lambda) DevOps: Jenkins, Airflow, Terraform Monitoring: Kibana, Grafana Ways of working: Agile (Scrum ...

.NET Developer, CMS, Sitecore, Optimizely

Hiring Organisation
Noir
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£350 - £400 per day
Umbraco, Alterian, Immediacy, Ektron, Kentico, Sitefinity or DotNetNuke. Our client is passionate about continuous learning and will provide industry-recognised training in: .NET 10.0, JavaScript, React, Angular 21, Microservices, MongoDB, Vue.js, TypeScript, Azure, AWS, ASP.NET Core Web API, Entity Framework, Node.js, Elasticsearch, Agile, TDD, BDD, Scrum and Kanban. This ...

Senior Developer

Hiring Organisation
Experis
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £770/day
design and query optimization Solid understanding of object-oriented programming principles and design Patterns Familiarity with front-end development and integration using HTML and JavaScript Experience with Jenkins and modern CI/CD practices Proficiency in AWS services and infrastructure-as-code using Terraform Strong experience with GitHub for version ...

Fullstack Software Engineer (Agentic AI)

Hiring Organisation
Adecco
Location
City of London, London, United Kingdom
Employment Type
Contract
life sciences), or equivalent experience Cloud experience (e.g. Google Cloud and cloud run preferred) including core web application infrastructure is essential Strong skills in JavaScript/TypeScript and Python, ensuring best practices are followed for clean and scalable code Demonstrated ability to work directly with designers, particularly using Figma ...

Fullstack Software Engineer (Agentic AI)

Hiring Organisation
Adecco
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
life sciences), or equivalent experience Cloud experience (e.g. Google Cloud and cloud run preferred) including core web application infrastructure is essential Strong skills in JavaScript/TypeScript and Python, ensuring best practices are followed for clean and scalable code Demonstrated ability to work directly with designers, particularly using Figma ...

Senior Software Engineer

Hiring Organisation
FDM Group
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
discussions About You Strong commercial experience in backend development using C# and the .NET ecosystem Frontend development experience using React or a similar modern JavaScript framework Solid understanding of software engineering fundamentals and agile delivery practices Experience working in live production environments, ideally within regulated, government or secure systems Eligibility ...

SharePoint Office 365 Developer

Hiring Organisation
People First
Location
East London, London, England, United Kingdom
Employment Type
Contractor
Contract Rate
£416 - £490 per day
self-motivated. Hands on development with Office 365 tools including SharePoint Online (PowerApps, Power Automate and SPFX or ReactJS) Hands on experience with CSS, JavaScript, jQuery and HTML5 Solid Rest API and Graph API knowledge Early morning or late night shift working (occasionally). Weekend working (occasionally). Please follow ...

OutSystems Developer (LowCode Orchestration)

Hiring Organisation
Infoplus Technologies UK Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
From £400 to £450 per day
. Strong understanding of low-code application architecture and lifecycle. Experience with integrations (REST, SOAP, OAuth, SQL, message queues). Basic understanding of CSS, JavaScript, and relational databases (SQL Server, Oracle). Knowledge of application security, performance tuning, and scalable app design. Job Description: Mandatory Skills: OutSystems OutSystems Developer ...

ServiceNow Developer

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£550 - £600 per day
Strong problem-solving skills, with the ability to work independently and within a team Technical Skills ServiceNow platform development and workflow configuration Web technologies: JavaScript, AngularJS, HTML, CSS, Bootstrap APIs and integrations: REST, SOAP, JSON, HTTP Experience building and maintaining ServiceNow integrations Strong troubleshooting, documentation and debugging capability Desirable Experience ...

Senior UI React

Hiring Organisation
Pontoon
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£800 - £900 per day
track record of delivering complex, enterprise-grade front-office e-trading systems in high-pressure, real-time environments. Technical Authority: Languages: Exceptional command of JavaScript and TypeScript, with the ability to architect, optimise, and scale mission-critical applications. Front-End Frameworks: Mastery of React and Redux, with extensive experience shaping ...

Salesforce Developer (SC Clearance Eligible)

Hiring Organisation
ARM
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £695/day Inside IR35
Processes (fka Integration Procedures) OmniScripts Skills in Apex (triggers, batch, web services) Integration Experience is beneficial (Mulesoft/APIGEE/Connected Apps) Experience of JavaScript/Lightning components Basic understanding of Apex sharing and security model Experienced with Lightning Web Components Skills in analysing and problem-solving issues Experience ...

Service Now Developer

Hiring Organisation
Sphere Digital Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£700 - £701 per day
Technical Skills Strong ServiceNow development experience (3+ years) Hands-on experience with Service Portal Solid background in web technologies including HTML, AngularJS, Bootstrap, CSS, JavaScript, JSON, HTTP, and REST/SOAP Experience with ServiceNow integrations Ability to work in Agile environments Strong troubleshooting and analytical skills Excellent written and verbal ...

Development Lead AI Tooling Transformation

Hiring Organisation
Station Group International Limited
Location
West London, London, United Kingdom
Employment Type
Contract
Contract Rate
From £550 to £650 per day Outside IR35
team performance, delivery quality and velocity rather than individual coding contribution. What we need from you Strong hands on experience across Angular, .NET, JavaScript/TypeScript, Azure, and Azure DevOps/CI/CD. You must be able to show that you have led a team through a move from ...

SC Cleared Interaction Designer - Remote

Hiring Organisation
Sanderson Government and Defence
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£87 - £540 per day
standards and digital service frameworks Nice to Have: Experience contributing to or working with design systems Knowledge of front-end technologies (HTML, CSS, JavaScript) Experience in agile, multidisciplinary delivery teams Exposure to service design or wider digital transformation programmes Reasonable Adjustments: Respect and equality are core values to us. ...

Full Stack Technical Lead

Hiring Organisation
Fruition Group
Location
London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£550 - £600 per day
Contract Full Stack Tech Lead - JavaScript Duration - 6 months Outside IR35 - Competitive Market Rate Fully Remote - Must be UK based Fruition Group are representing a boutique technology consultancy who are specialist at delivering cutting edge solutions for public and private sector clients. They're known as the 'Knights in Shining ...

Creative Technologist

Hiring Organisation
Infoplus Technologies UK Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
From £500 to £550 per day
solutions and rapid prototypes using technologies such as AI, immersive tech AR/VR, sensors, and cloud platforms. Key skills: GCP Cloud/Kubernetes JavaScript, Python or Java AI/ML/Generative AI UX/UI understanding Unity or 3D engines desirable 2? Agentic SDLC Platform Engineer 2 Roles ...

ServiceNow Developer

Hiring Organisation
CBSbutler Holdings Limited trading as CBSbutler
Location
London, United Kingdom
Employment Type
Contract
hands-on ServiceNow development experience (3+ years) Proven track record delivering across the ServiceNow platform Solid Service Portal development experience Strong technical background across: JavaScript, AngularJS, HTML, CSS, Bootstrap REST/SOAP APIs, JSON, HTTP Experience integrating ServiceNow with other systems Comfortable working in Agile environments Strong troubleshooting and problem ...

SharePoint / Office 365 Consultant (RP/SP1)

Hiring Organisation
GCS
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £415/day Inside IR35
days per week in a Canary Wharf office Rate - £415 per day (Inside IR35) Tech Stack - Sharepoint Office 365 Power apps Power Automate HTML, Javascript, CSS Tasks - Working with the team and the wider development team to both grow and to help adopt Agile like methodologies with practical implementation alongside ...

Senior ServiceNow Engineer

Hiring Organisation
CBSbutler Holdings Limited trading as CBSbutler
Location
London, United Kingdom
Employment Type
Contract
Portal development experience Comfortable working in Agile delivery environments A mindset focused on building, problem-solving, and getting things done Strong technical skills across: JavaScript, AngularJS, HTML, CSS REST/SOAP APIs, integrations Nice to Have: Experience with Customer Service Management (CSM) ServiceNow Certified Application Developer (CAD) Experience working ...

eDV-cleared Technical Consultants - Automation, Catalogue Migration

Hiring Organisation
PS Computer Services Ltd t/a Parker Shaw
Location
London, United Kingdom
Employment Type
Contract
Ansible, Puppet, Chef or similar platforms. Creating a workflow design demonstrating process mapping, problem solving and decision modelling. Proficiency in scripting languages such as JavaScript, Python, PowerShell, Groovy, and Bash. Experience with orchestration languages such as YAML. Familiarity with REST APIs, web services, and integrating automation with third-party tools. ...

Senior Java full stack developer / Tech Lead

Hiring Organisation
E-Solutions IT Services UK Ltd
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£70,000 - £80,000 per annum
Boot , and Microservices Architecture . Mandatory hands-on experience with React js , Redux (or similar state management libraries). Solid understanding of HTML5, CSS3, JavaScript (ES6+) . Experience with RESTful API design and integration. Familiarity with databases such as MySQL, PostgreSQL, or MongoDB. Experience with version control systems like Git. … containerization tools (Docker) and cloud platforms (AWS/Azure/GCP) is a plus. Experience with CI/CD pipelines. Preferred Qualifications Experience with JAVAScript and React. Knowledge of front-end build tools. Familiarity with testing frameworks (JUnit, Mockito, Jest, etc.). Strong problem-solving and analytical skills. ...

Senior Web Application Developer ASP.NET MVC 5, C#, & React

Hiring Organisation
PCR Digital
Location
Hammersmith, London, United Kingdom
Employment Type
Contract
Contract Rate
£425 - £538/day Inside IR35 to Umbrella
required. We are looking for a strong portfolio in bespoke eCommerce and enterprise web applications. Other desirable skills include a mix of HTML5, CSS3, JavaScript, jQuery etc. This Snr Web Developer/C#, ASP.NET MVC 5 Developer will to play a key role in the next phase of web platform … eCommerce and enterprise web applications. * Proven expertise on C#, ASP.NET MVC 5, SQL Server, Entity Framework, and React experience desirable to have HTML5, CSS3, JavaScript, jQuery. * Strong knowledge of Object-Oriented Programming, SOLID principles, and common design patterns. * Experienced in RESTful API design and integration; experience with SOAP WebServices ...

C# Developer

Hiring Organisation
GCS
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £490/day inside IR35
Applications Duration - 6 months with likely extension Rate - £490 p/d (inside IR35) Location - Hybrid/Canary Wharf Tech Stack C# WPF Winforms Javascript SQL Oracle Tasks Tasks range from understanding business requirements, designing application structures, business data analysis, programming WPF (Windows Presentation Foundation) applications in Visual C#.NET ...

OutSystems Developer (LowCode Orchestration)

Hiring Organisation
Infoplus Technologies UK Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 400 - 450 Daily
. Strong understanding of low-code application architecture and lifecycle. Experience with integrations (REST, SOAP, OAuth, SQL, message queues). Basic understanding of CSS, JavaScript, and relational databases (SQL Server, Oracle) click apply for full job details ...

Creative Technologist

Hiring Organisation
Infoplus Technologies UK Ltd
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 500 - 550 Daily
solutions and rapid prototypes using technologies such as AI, immersive tech AR/VR, sensors, and cloud platforms. Key skills: GCP Cloud/Kubernetes JavaScript, Python or Java AI/ML/Generative AI UX/UI understanding Unity or 3D engines desirable 2 click apply for full job details ...