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.
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.
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 Data Engineer
12-month hybrid contract in Dublin building and maintaining ETL/data pipelines into centralised data platforms for a large, regulated organisation. Core stack: PySpark/Spark, SQL (SQL Server), Azure Databricks, Snowflake, and orchestration with Azure Data Factory or Airflow, plus data governance and CI/CD.
Senior Java Backend Engineer | Cloud/SaaS, Hybrid Dublin
Senior backend engineer building Java/Spring Boot cloud services for a large-scale enterprise SaaS platform, hybrid from Dublin (3+ days/week in office). Day-to-day involves REST APIs, integrations, data processing, performance tuning, and CI/CD on AWS with Docker/Kubernetes. No visa sponsorship.
Senior Software Engineer (Java/AWS)
Senior backend engineer designing and building cloud-native SaaS services in Java/Spring Boot on AWS for a global enterprise software company, hybrid from Dublin. Work spans REST APIs, distributed systems, Docker/Kubernetes, CI/CD, observability, and AI-assisted development.
Senior Full-Stack Engineer
Contract senior full-stack engineer in Abu Dhabi building end-to-end architecture for enterprise AI agents: React/Next.js chat frontends plus secure backend orchestration layers, RAG/vector search (Weaviate), and SAP S/4HANA integration for defense-grade infrastructure.
Senior Full-Stack Engineer - AI-Driven Enterprise Platform
Contract role via recruiter GCS Recruitment for a senior full-stack engineer in Abu Dhabi working on a large-scale enterprise AI transformation: building dynamic frontend apps and on-premise microservices, with secure API orchestration for LLMs integrated with SAP and enterprise data, delivered under a Stage Gate model.
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.
Data Engineer - Malta Relocation | Scale Distributed Pipelines
Design and build scalable batch and real-time data pipelines on a modern distributed, cloud-native stack. Relocation to Malta is required, with remote work from Malta; core skills are Python, SQL, Airflow/Temporal, Kubernetes, and cloud-native environments.
Data Engineer
Data Engineer role (levels II, III, and Staff) building and scaling distributed batch and real-time data platforms on a modern open-source stack: Python, Spark/PySpark, Kafka, Airflow/Temporal, Iceberg, Kubernetes. Permanent, remote-from-Malta position with mandatory relocation to Malta (relocation support provided).
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.