GCS Recruitment
Open positions
Senior Fullstack Engineer: AI Frontend on Azure Hybrid
GCS Recruitment is hiring two Senior Fullstack Engineers for an energy-sector client project on Azure: leading scalable front-end architecture, handling data-intensive processing, and integrating AI APIs into production web apps, with Docker and CI/CD; hybrid work from London.
Senior Fullstack Engineer x2
Six-month contract (inside IR35, £450/day) via GCS Recruitment for an established energy company: build scalable React/TypeScript front-ends with Python, deployed on Azure and integrated with LLM-based and agentic AI services. Hybrid, 2 days a week in London.
Senior React Full-Stack Engineer: Azure Cloud & AI
Senior full-stack engineer designing and delivering scalable web applications with React and Python, deployed on Microsoft Azure (AWS as fallback). Day to day involves collaborating with backend, cloud, and AI teams on large-data and AI-driven components, performance optimisation, and deployment pipelines.
Full Stack Engineer - Front End - AI
Senior fullstack developer role in London building scalable, high-performance React front-ends that integrate AI/LLM and agentic services, deployed to Microsoft Azure (AWS acceptable) using Docker and CI/CD. You'll collaborate with backend, cloud, and AI teams on apps handling large data volumes.
Senior Full Stack Developer
Senior Full Stack Developer building AI-powered web applications on Microsoft Azure for an enterprise Agentic AI programme — designing React front ends and Python/TypeScript back ends, integrating LLM-based services, APIs and microservices, and deploying with Docker and CI/CD. Hybrid role based in London.
Senior Kubernetes DevOps Engineer | GitOps & CI/CD Expert
GCS Recruitment seeks a hands-on Senior DevOps Engineer in Salfords, UK, to build and optimise container-based applications: managing Kubernetes environments, implementing GitOps with Argo CD, and shaping CI/CD pipelines with GitHub Actions from development through production, while collaborating with platform teams across the software lifecycle.
DevOps Engineer - Kubernetes / Argo CD- VERY URGENT
Senior platform/DevOps engineer role configuring and supporting Kubernetes-based application platforms, maintaining GitOps deployment workflows with Argo CD, and building CI/CD pipelines in GitHub Actions — taking container-based apps from development through to production and troubleshooting delivery issues.
Contract Full-Stack Engineer – Workday Extend & Integrations
Contract role in London for a full-stack Workday developer: designing Workday Extend extensions, building JavaScript/TypeScript front-end features, and creating backend services and integrations, with emphasis on API integration, security, enterprise patterns, agile delivery and CI/CD.
Full Stack Developer - Workday extend- contract
Contract role for a full stack developer with hands-on Workday Extend experience to build applications, backend services and integrations (JavaScript/TypeScript, REST/SOAP APIs) extending Workday and connecting it with enterprise systems on a major transformation programme, based in London.
Senior AWS Cloud Engineer — Hybrid, Cloud-Native & DevOps
Senior AWS Cloud Application Engineer on a long-term hybrid contract, embedded with a major financial services client's cloud transformation programme. Day to day: defining AWS standards and guardrails, supporting app modernisation and cloud migration, and coaching delivery teams on cloud-native architecture, Step Functions and CI/CD.
IAM Delivery Lead: Global IAM & DevOps Delivery
Leads global Identity & Access Management (IAM) delivery, managing IGA workstreams, stakeholders and vendors while tracking progress in Jira/Confluence and reporting status, risks and issues weekly. Needs strong project management plus technical understanding of IAM, DevOps, Jenkins, CI/CD and cloud/on-prem infrastructure.
Senior DevOps Engineer: AI-Powered Tooling & Azure Cloud
Senior DevOps Engineer (hired via GCS Recruitment, employer unnamed) to lead enterprise DevOps and AI-assisted engineering platforms: automation, CI/CD, Kubernetes and Azure cloud infrastructure, plus developer tooling — introducing AI coding tools like GitHub Copilot and Claude Code across delivery, testing, quality and operations.
Senior Azure DevOps Engineer - DevOps & AI Tooling
Senior DevOps Engineer leading enterprise DevOps and AI-assisted engineering platforms: driving automation, CI/CD, Kubernetes, cloud infrastructure and developer tooling, while introducing AI tools like GitHub Copilot and Claude Code into software delivery, testing and operations. Hired via GCS Recruitment in the UK.
Java Developer - Neo4j & Microservices (6-Month Contract)
Six-month contract Java developer placed by GCS Recruitment into a bank's DevX Standards and Controls team, re-platforming a controls-compliance app from PCF to an internal BYOC platform. Day to day: building Java 11+ microservices and REST APIs with Neo4j/PostgreSQL, dependency upgrades, and light Angular front-end work.
Java Developer (with Neo4J)
6-month contract Java developer working for a bank's Developer Experience team, building a platform for managing software development compliance controls and re-platforming an app from PCF to an internal BYOC platform. Core stack: Java 11+, Angular, REST APIs, Neo4j, PostgreSQL and Maven.
Kotlin Backend Engineer - Hybrid Contract
GCS Recruitment is hiring a contract Kotlin backend engineer near Sheffield, UK, on a hybrid basis with about two on-site days per week. The role focuses on building and maintaining Kotlin/Java back-end platforms, APIs, and microservices within cloud-ready, Agile delivery teams.
Java Developer
Java developer on a Developer Experience (DevX) team building a platform for managing software development compliance, focused on re-platforming an app from Pivotal Cloud Foundry to an internal BYOC platform and modernising legacy code. Day to day: Java 11+ back-end microservices and REST APIs with some Angular front-end, using PostgreSQL/Neo4j, Maven, and agile CI/CD tooling.
Python Developer (DevOps Experience mandatory)
Owns and evolves a Jenkins shared library powering multi-language CI/CD builds, using Python and Groovy to deliver secure, provenance-rich pipelines with SLSA provenance, SBOMs, and aggregated security scans. Core stack: Python, Jenkins/Groovy, Maven/NPM, Helm, Terraform, SonarQube and Sonatype IQ.
Python Developer - Agentic AI / GenAI - Investment Banking
Contract (inside IR35, hybrid in Farringdon, London) Python/AI engineer building production-grade Agentic AI, LLM and RAG solutions for an investment banking client through a consulting engagement. Core stack: Python, OpenAI/GPT, Anthropic Claude, LangChain/LangGraph/AutoGen/CrewAI and FastAPI.
AWS DevOps Engineer: Cloud, IaC & CI/CD Automation
GCS Recruitment is seeking an experienced AWS DevOps Engineer to join an enterprise engineering team within a leading global financial services organisation in Sheffield. The role focuses on large-scale AWS…