Full Stack Developer - Workday extend- contract

GCS Recruitment; Greater London; On-site; GBP 83,000 - 124,000; Full time

Job summary

GCS Recruitment seeks a skilled Full Stack Workday Developer for a hands-on contract role in the UK. You will design and implement extensions using Workday Extend, build modern front-end features in JavaScript/TypeScript, and create robust backend services and integrations.

Collaborate with Workday teams and wider engineering functions to deliver scalable solutions. The role emphasizes API integration, security and enterprise patterns, with emphasis on agile delivery and CI/CD practices to

Qualifications

• Experience with Workday Extend ecosystem and building extensions.
• Strong front-end development using JavaScript/TypeScript.
• Develop and consume REST/SOAP APIs and enterprise integrations.
• Experience integrating Workday with external systems.
• Comfortable working in Agile delivery environments.

Responsibilities

• Design, develop and enhance applications using Workday Extend.
• Build modern front-end functionality with JavaScript/TypeScript.
• Develop backend services, APIs and integration components.
• Integrate Workday with internal and third-party platforms.
• Work with REST/SOAP APIs, JSON and web services.
• Develop solutions around Workday business processes and data.
• Troubleshoot application, integration and performance issues.
• Collaborate with Workday functional teams, architects and engineering teams.
• Contribute to CI/CD, testing, and code quality practices.

Skills

Workday Extend

Full Stack Development

JavaScript/TypeScript

REST APIs

Integrations

Agile Delivery

CI/CD

React

Node.js

Tools

React

Node.js

Job description

Contract Full Stack Workday Developer

Contract | Full Stack Developer | Workday Extend | JavaScript / TypeScript | APIs | Integrations

We are looking for an experienced Full Stack Workday Developer to join a major transformation programme on a contract basis.

This is a hands‑on development role requiring strong full stack engineering experience combined with practical knowledge of the Workday ecosystem, particularly Workday Extend. You will be responsible for building applications and integrations that extend Workday functionality and connect with wider enterprise systems.

Key Responsibilities

• Design, develop and enhance applications using Workday Extend
• Build modern front‑end functionality using JavaScript / TypeScript and related web technologies
• Develop backend services, APIs and integration components
• Integrate Workday with internal and third‑party enterprise platforms
• Work with REST / SOAP APIs, JSON and web services
• Develop solutions around Workday business processes and data
• Troubleshoot application, integration and performance issues
• Work closely with Workday functional teams, architects and wider engineering teams
• Contribute to CI/CD, testing, code quality and engineering best practices

Key Skills

• Strong commercial Full Stack Development background
• Hands‑on Workday Extend development experience
• Good understanding of the wider Workday platform
• Strong JavaScript / TypeScript and web development skills
• Experience developing and consuming REST APIs / web services
• Experience building integrations between Workday and external systems
• Understanding of authentication, security and enterprise integration patterns
• Strong software engineering and problem‑solving skills
• Comfortable working within Agile delivery environments

Desirable

• Workday Integration experience
• Workday Studio / EIB / Core Connectors experience
• Workday REST and SOAP API experience
• Experience with React or other modern JavaScript frameworks
• Cloud and CI/CD experience

This is an excellent opportunity for a strong Full Stack Engineer with Workday Extend experience to work on a high‑profile enterprise programme delivering new applications and integrations across the Workday ecosystem.