Senior Full Stack Developer

GCS Recruitment; Greater London; Hybrid; GBP 90,000 - 120,000; Full time

Job summary

GCS Recruitment is seeking a hands-on Senior Full Stack Developer to design, develop, and deploy modern web applications that integrate AI-powered services on the Azure platform. You will collaborate with cloud engineers, data specialists, and AI teams to deliver scalable, secure solutions in a hybrid London environment.

The role emphasizes building robust front-end architectures with React, JavaScript, and TypeScript, along with Python-based back-end services.

Qualifications

• Extensive experience as a Senior Full Stack Developer.
• Strong React, JavaScript/TypeScript, and Python expertise.
• Proven cloud deployment experience, ideally Azure.
• Experience with APIs, microservices, and distributed systems.
• Hands-on Docker and CI/CD deployment experience.

Responsibilities

• Design, develop, and deploy modern web apps integrating AI-powered services.
• Collaborate with cloud, data, and AI teams to deliver scalable solutions.
• Deploy to Azure and manage containerised deployments.
• Drive performance, observability, and reliability.
• Support CI/CD pipelines and production readiness.

Skills

React

Python

JavaScript

TypeScript

Docker

Azure

Tools

Azure

Job description

Senior Full Stack Developer (React, Python & Azure AI)

Location: London/ Hybrid
Start: ASAP

About the Opportunity

We are seeking an experienced Senior Full Stack Developer to join a cutting-edge programme focused on delivering AI-powered solutions on Microsoft Azure.

This initial workstream is dedicated to building an Agentic AI capability using Python and Azure technologies, working closely with business stakeholders to define the technical foundation, architecture, and product direction for a wider enterprise AI programme.

This is an exciting opportunity to work on innovative AI initiatives, cloud-native applications, and large-scale data-driven solutions while helping shape future platform capabilities.

The Role

As a Senior Full Stack Developer, you will play a key role in designing, developing, and deploying modern web applications that integrate with AI-powered services and large-scale distributed systems.

You will collaborate with cloud engineers, architects, data specialists, and AI teams to deliver scalable, secure, and high-performing solutions in Azure environments.

Key Responsibilities

• Design, develop, and maintain scalable full-stack applications using React, Python, JavaScript, and TypeScript
• Build responsive, high-performance front-end solutions capable of handling large data volumes
• Develop and integrate APIs, microservices, and distributed systems
• Deploy and manage applications within Microsoft Azure environments
• Integrate applications with LLM-based services, Agentic AI workflows, and AI-driven platforms
• Work with containerised solutions using Docker and cloud-native deployment approaches
• Support and enhance CI/CD pipelines to ensure reliable and repeatable deployments
• Collaborate closely with architecture, cloud, and AI teams to deliver production-ready solutions
• Drive performance optimisation, observability, scalability, and application reliability

Required Skills & Experience

Essential

• Extensive experience as a Senior Full Stack Developer
• Strong expertise in:
  • React
  • JavaScript / TypeScript
  • Python
• Deep understanding of modern React development:
  • Hooks
  • State management
  • Component architecture
  • Performance optimisation
• Proven experience deploying applications to cloud environments, ideally Microsoft Azure
• Strong experience integrating APIs, microservices, and distributed architectures
• Hands-on experience with Docker and containerised deployments
• Experience building applications that support high traffic volumes and large datasets
• Strong understanding of frontend performance, monitoring, and observability
• Experience working within Agile delivery teams

Desirable

• Azure AI Services
• Azure OpenAI
• Agentic AI frameworks
• Azure Container Apps
• Azure Kubernetes Service (AKS)
• Infrastructure as Code
• Experience with AWS cloud platforms
• Exposure to enterprise-scale AI transformation programmes

What You'll Be Working On

• AI-powered enterprise applications
• Agentic AI and intelligent workflow solutions
• Azure cloud-native platforms
• Large-scale data processing and visualisation solutions
• Production-grade deployment pipelines
• Modern React front-end architectures

Ideal Candidate

You are a hands-on Senior Engineer who enjoys solving complex technical challenges and building products that deliver real business value. You have strong cloud deployment experience, enjoy working with modern web technologies, and are excited by the opportunity to work at the forefront of AI and Azure innovation.