Contract JavaScript Jobs in the South East

1 to 25 of 47 Contract JavaScript Jobs in the South East

Full Stack Developer

London, South East, England, United Kingdom
Harnham - Data & Analytics Recruitment
security, accessibility, and testing across the codebase Support platform improvements and contribute to continuous delivery practices Skills & Experience Required Strong experience in full stack development using React , Next.js , and JavaScript/TypeScript Proven backend engineering skills using Node.js and/or modern languages like Python , Ruby , Scala , or Rust Solid understanding of API design and integration Track record of delivering More ❯
Employment Type: Contractor
Rate: £400 - £450 per day
Posted:

Full Stack Software Developer

East Sussex, England, United Kingdom
Sanderson
deployment processes, and codebase changes clearly and thoroughly. What You'll Bring Relevant software development experience, with strong expertise in .NET (C#) And ideally VB.NET Front-end technologies - Angular, JavaScript, HTML, CSS. SQL Server Experience in a client-facing or business-facing technical role. Maintaining and modernising legacy systems, including VB.NET. Communication skills to engage confidently with non-technical stakeholders. More ❯
Employment Type: Contractor
Rate: £375 - £425 per day
Posted:

Senior C# Web Application Developer

Milton Keynes, Buckinghamshire, England, United Kingdom
Hybrid / WFH Options
interAct Consulting Limited
Agile environment. You'll join a collaborative, remote-first team building meaningful software that's reshaping healthcare. Tech Stack C#, .NET (Core and Framework) ASP.NET MVC/Web API JavaScript (React or Angular), HTML5, CSS3 SQL Server/Entity Framework Azure/DevOps pipelines Agile/Scrum/TDD/CI/CD Ready to take the lead on your More ❯
Employment Type: Contractor
Rate: £400 - £450 per day
Posted:

Software Developer

London, South East, England, United Kingdom
Hybrid / WFH Options
Oscar Technology
Provide senior-level support, troubleshooting, and performance monitoring with modern observability tools. Mentor and support junior engineers, collaborating with global teams. Required: Proven full-stack development expertise Node.js, TypeScript, JavaScript, and C#, .NET. Hands-on experience with cloud platforms (Azure preferred, AWS/GCP beneficial). Skilled in Kubernetes, Docker, Terraform, Helm, and CI/CD automation. Strong background in More ❯
Employment Type: Contractor
Rate: Salary negotiable
Posted:

Full Stack Developer

London, South East, England, United Kingdom
Hybrid / WFH Options
Robert Half
Robert Half Technology are assisting a market leading global technology consultancy to recruit a Full Stack Developer - Fully remote The Full Stack Developer will have experience across: React Python Javascript Nice to have: CI/CD Pipelines Github Actions Vue Java Azure Azure Devops Role The Full Stack Developer will adopt best practices like writing clean and reusable code using More ❯
Employment Type: Contractor
Rate: Salary negotiable
Posted:

AI Engineer Front End

London, South East, England, United Kingdom
Adecco
and architecture planning sessions. Required Knowledge, Skills & Experience Proven experience building secure, production-grade front-end applications in regulated environments (e.g., finance, healthcare, government). Strong proficiency in modern JavaScript/TypeScript frameworks (React, Next.js) and responsive UI development. Demonstrated ability to build front-end applications from scratch in greenfield or innovation lab settings. Experience developing interactive UIs, dashboards, chat More ❯
Employment Type: Contractor
Rate: Salary negotiable
Posted:

Contract Senior Software Engineer - eDV Cleared

London, South East, England, United Kingdom
Searchability NS&D
D, implementation to automation. WE NEED THE SENIOR SOFTWARE ENGINEER TO HAVE.... Current enhanced DV clearance Experience with at least one of the following: Java, Python, C++, C#, .NET, JavaScript, React Experience mentoring juniors or leading teams is nice to have but not essential Experience/Knowledge of automation IT WOULD BE NICE FOR THE SENIOR SOFTWARE ENGINEER TO HAVE.... More ❯
Employment Type: Contractor
Rate: £500 - £750 per day
Posted:

Outsystem Developer

London, South East, England, United Kingdom
Advanced Resource Managers Limited
and understanding stakeholders on their request and work in an environment with some levels of governance Must have: Web applications expertise using modern web technologies (e.g. CSS, HTML, HTML5, JavaScript, jQuery). Knowledge in UX design principles and ability to apply them when building applications/solutions. Knowledge in database modelling and SQL programming (e.g. joins, count, group by, indexes More ❯
Employment Type: Contractor
Rate: £550 - £575 per day, Negotiable
Posted:

Spotify Backstage Developer

London, South East, England, United Kingdom
Hybrid / WFH Options
Robert Half
documentation, and training for engineering teams adopting Backstage. Contribute to Backstage open-source ecosystem (where applicable). Profile The Spotify Backstage Developer will have strong experience in TypeScript/JavaScript (React knowledge highly desirable). Experience working with Spotify Backstage (building plugins, extending the framework). Familiarity with cloud environments (AWS, GCP, or Azure). Understanding of CI/CD More ❯
Employment Type: Contractor
Rate: Salary negotiable
Posted:

React Developer

Bromley, Kent, England, United Kingdom
Pontoon
that's critical to global trading operations. What we're looking for: Strong programming skills in an OOP language (Java, Python, etc.). Solid hands-on experience with React, JavaScript, HTML, and CSS. Good understanding of algorithms, data structures, and design patterns. Experience with agile methodologies (Scrum, Kanban, XP) and CI/CD practices. Background in UI design, optimisation, scalability More ❯
Employment Type: Contractor
Rate: £750 - £850 per day
Posted:

React Developer UI Components

Bromley, Kent, England, United Kingdom
Pontoon
and Risk frontend application suite. Essential Skills & Qualifications: Proficient in an OOP language such as Java or Python. Strong experience with web technologies, tools, and frameworks, including HTML, CSS, JavaScript, and React. Familiarity with Agile development methodologies (XP, SCRUM, Kanban) and continuous integration practises. Previous experience in UI design, optimisation, and development processes. A solid degree in Computer Science, Physics More ❯
Employment Type: Contractor
Rate: Salary negotiable
Posted:

Senior Full Stack & AI Automation Engineer

London, South East, England, United Kingdom
Salt Search
10+ years building operational support systems and automation in Python. Proven leadership in code reviews and mentoring. Hands-on experience with Selenium and iOS functional automation. Strong React/JavaScript UI development background. Back-end engineering with Python + Postgres. AI/ML expertise in LLMs, embeddings, and RAG systems. Experience with ETL pipelines, vector databases, and modern DevOps (Jenkins More ❯
Employment Type: Contractor
Rate: Salary negotiable
Posted:

Microsoft Power Platform Developer

London, South East, England, United Kingdom
FDM Group
Microsoft Co-pilot Studio Experience with ALM Accelerator for Power Platform Excellent stakeholder management and relationship building skills Background in developing with C#, .NET, Web Services, Web Forms, MVC, JavaScript, jQuery, CSS, HTML, React, Web APIs and Visual Studio, API integrations Skilled in creating interface definitions Exposure to working with Agile development framework Experience with software design and development in More ❯
Employment Type: Contractor
Rate: £50,000 - £60,000 per annum
Posted:

Front Office React Developer

London, South East, England, United Kingdom
Adecco
and Risk team to build and extend FX Options and Risk frontend application suite. Essential Skills: Very good knowledge and experience in Web Technologies, tools and frameworks, HTML, CSS, JavaScript and React. Knowledge or experience of agile development (e.g. XP, SCRUM, Kanban) and continuing integration. Experience in UI design, optimisation, scalability and reliability. Excellent problem solving and analytical skills in More ❯
Employment Type: Contractor
Rate: £700 - £800 per day
Posted:

C# Software Engineer

Stevenage, Hertfordshire, South East, United Kingdom
Hybrid / WFH Options
Morson Talent
Excellent verbal, presentation and written communication skills Knowledge of using Microsoft Windows and Linux operating systems Desirable: Distributed simulation standards/Protocols (DIS, HLA, DDS) and web services development (JavaScript, Node JS or similar) Military Communications, Datalinks and Interfaces such as 1553/1760 and Ethernet TCP/IP Practical knowledge of System integration principles and processes More ❯
Employment Type: Contract, Work From Home
Rate: £65 per hour + Inside IR35
Posted:

Software Engineer (C# / C++)

Stevenage, Hertfordshire, South East, United Kingdom
Hybrid / WFH Options
Certain Advantage
verbal, presentation and written communication skills Knowledge of using Microsoft Windows and Linux operating systems Non-essential: Distributed simulation standards/Protocols (DIS, HLA, DDS) and web services development (JavaScript, Node JS or similar) Military Communications, Datalinks and Interfaces such as 1553/1760 and Ethernet TCP/IP Practical knowledge of System integration principles and processes More ❯
Employment Type: Contract, Work From Home
Rate: £65 per hour, Benefits Overtime rate
Posted:

SDET - Playwright/TypeScript

London, South East, England, United Kingdom
Harvey Nash
testing for our web-based applications and trading platforms. What We're Looking For: Playwright Experience: Strong experience with Playwright for test automation, and familiarity with modern web technologies (JavaScript/TypeScript, HTML, CSS). SDET Expertise: Proficiency in writing automated tests for web and mobile applications, with a solid understanding of testing methodologies. Commodity Trading Knowledge: An understanding of More ❯
Employment Type: Contractor
Rate: £550 - £700 per day
Posted:

Angular Web Developer

Hampshire, South East, United Kingdom
Gerrell & Hard
as required. Required Degree and industry experience in: Web Development Experienced developer with a proven track record of delivering projects on time. Expert/experienced in: - Angular - HTML - CSS - JavaScript, Typescript - Inter-process communication mechanisms (e.g. gRPC, ZMQ) - Front-end testing frameworks (eg.Playwright) and testing experience. - Language-agnostic data structures (e.g.Protocol Buffers/FlatBuffers) Other Understanding of the fundamentals of More ❯
Employment Type: Contract
Posted:

QA Analyst

London, South East, England, United Kingdom
Hybrid / WFH Options
Pontoon
smart order routing). Understanding of interest rate derivatives (swaps, futures). Familiarity with automation testing (advantageous). Strong knowledge of SDLC in Agile environments. Technical skills: SQL, Python, JavaScript, APIs, data reconciliation. Experience with Microsoft Office tools (Word, Excel, PowerPoint, Outlook). Strong documentation, bug reporting, and prioritisation skills. Excellent problem-solving, communication, and stakeholder management skills. Personal Attributes More ❯
Employment Type: Contractor
Rate: Salary negotiable
Posted:

Front End Developer

Maidstone, Kent, England, United Kingdom
Proactive Appointments
on site 3 days per week on site. This role has been scoped Outside of IR35. Hybrid – 3 days Outside IR35 Keys skills & experience Front end development – CSS, HTML, JavaScript React System monitoring tools Automated testing frameworks Scripting Unix Supporting and consulting with UX team Excellent Communication skills. Due to the volume of applications received for positions, it will not More ❯
Employment Type: Contractor
Rate: £325 - £350 per day
Posted:

UI/UX Designer

London, South East, England, United Kingdom
Certain Advantage
design principles and responsive design. Experience with prototyping tools and usability testing. Excellent communication and collaboration skills. Portfolio showcasing relevant design projects and process. Familiarity with HTML, CSS, and JavaScript is a plus. Experience working in Agile/Scrum environments. Knowledge of accessibility standards and inclusive design. Does this sound like your next career move? Apply today!Working with Certain More ❯
Employment Type: Contractor
Rate: Salary negotiable
Posted:

Full Stack Engineer AI/ML, Python, Agentic

London, South East, England, United Kingdom
Hybrid / WFH Options
Salt Search
Selenium, and iOS functional automation. Experience with testing activities across the entire lifecycle of the project from inception to delivery. Front-End Development: Design and implement user interfaces using JavaScript, and frameworks such as React. Back-End Development: Develop and maintain server-side logic using Python. Manage APIs and integrate third-party services and tools. Ensure application data integrity and More ❯
Employment Type: Contractor
Rate: £500 - £700 per day
Posted:

UI Lead

London, South East, England, United Kingdom
Lorien
UI Lead - Financial Services Key Skills: React, TypeScript, JavaScript, Node.js Front end focused role. Responsibilities: Lead UI development across financial platforms using React and TypeScript. Collaborate with UX, backend, and product teams to deliver scalable solutions. Architect and maintain reusable components and design systems. Integrate frontend with Node.js-based services and APIs. Champion best practices in performance, accessibility, and code More ❯
Employment Type: Contractor
Rate: Salary negotiable
Posted:

Power Platform Developer

London, South East, England, United Kingdom
Lynx Recruitment Ltd
and monitoring Ensure best practices around security, performance, and maintainability Skills & Experience Required: Proven experience with Microsoft Power Platform and UiPath Strong understanding of HTTP, HTML/CSS/JavaScript Experience with structured data formats such as XML and JSON Knowledge of SQL Server, PostgreSQL, and Dataverse Familiarity with enterprise tools and practices: authentication/authorisation, cloud hosting (Azure), source More ❯
Employment Type: Contractor
Rate: £400 - £435 per day
Posted:

PHP Developer

London, South East, England, United Kingdom
Proactive Appointments
an existing project from Zend (now Laminas) to a newer version. Support the decommissioning of legacy systems alongside ongoing business change. Work across the stack: PHP, MySQL 8, HTML, JavaScript, CSS . Investigate and resolve issues where the in-house team are focused on BAU commitments. Collaborate with stakeholders to understand business needs and translate them into solutions. What We More ❯
Employment Type: Contractor
Rate: £400 - £475 per day
Posted:
JavaScript
the South East
10th Percentile
£204
25th Percentile
£213
Median
£475
75th Percentile
£536
90th Percentile
£630