Senior Fullstack Engineer x2

GCS Recruitment; Greater London; Hybrid; GBP 72,000 - 94,000; Full time

Benefits offered by this job

Hybrid working

Job summary

GCS Recruitment seeks two Senior Fullstack Engineers for an energy-sector project delivering AI-enabled capabilities on Azure. Lead the design of scalable front-end architectures and collaborate with backend, cloud, and AI teams to ship production-ready applications.

Role emphasizes building high-performance web apps, data-intensive processing, and seamless integration with AI APIs, with Docker and CI/CD involved. Hybrid London-based work pattern expected.

Qualifications

• Design, build and maintain scalable front-end applications using React and Python.
• Experience deploying front-ends to cloud platforms, ideally Azure (AWS acceptable).
• Familiar with APIs, microservices and distributed systems.
• Strong front-end performance and observability focus.

Responsibilities

• Design, build, and maintain scalable front-end applications using React, Python, and modern JavaScript/TypeScript.
• Build front-end solutions for high data throughput and performance at scale.
• Collaborate on deploying applications to Azure-based cloud environments.
• Integrate front-end applications with AI-powered services and Agentic AI systems.
• Work with Docker-based containerised environments and CI/CD pipelines.
• Support reliable, repeatable deployments and cloud-native orchestration.

Skills

React

Python

JavaScript/TypeScript

Performance optimisation

CI/CD

Tools

Docker

Azure

Microservices

APIs

Job description

SENIOR FULLSTACK ENGINEERS

A well-established energy company is looking for two Senior Fullstack Engineers to help build and deliver an early AI and agentic capability solution on Azure. Focused on establishing technical foundations, architecture, and product direction, this role involves creating scalable, high-performance web applications that handle large volumes of data and integrate AI-driven components.

The successful engineer will collaborate closely with backend engineers, cloud specialists, and AI teams to deliver intelligent, production-ready applications.

CONTRACT

• Initial 6-Month Contract (Potential Extension)
• £450 Per Day (Inside IR35)
• Hybrid Working (2 days a week in London)

WHAT YOU'LL BE DOING

• Design, build, and maintain scalable front-end applications using React, Python, and modern JavaScript/TypeScript.
• Build front-end solutions that support high data throughput, performance optimisation, and responsiveness at scale.
• Collaborate on the deployment of applications to cloud environments (mostly Azure)
• Integrate front-end applications with AI-powered services, including LLM-based APIs, workflows, and Agentic AI systems.
• Work with containerised environments (e.g., Docker) and contribute to automation, orchestration services, and cloud-native deployment pipelines.
• Support CI/CD processes and promote reliable, repeatable deployments.

KEY REQUIREMENTS

• experience
• React and Python experience (modern patterns, hooks, state management, performance optimisation etc.)
• Previously deployed applications to cloud platforms, ideally Microsoft Azure (AWS acceptable).
• Experience integrating front-end applications with APIs, microservices, and distributed systems.
• Familiarity with container technologies such as Docker and container-based deployment models.
• Experience working on applications that handle large datasets or high-traffic environments.
• Strong understanding of front-end performance, observability, and optimisation techniques.

WHAT NEXT...

If you're a Senior Fullstack Engineer with strong React and Python skills ready to work on cutting-edge AI capabilities.