Senior Full-Stack Engineer

GCS Recruitment; Abu Dhabi; On-site; AED 240,000 - 360,000; Part time

Job summary

GCS Recruitment is seeking a Senior Full-stack Engineer in Abu Dhabi, UAE for a remote contract role. You will architect production-grade, end-to-end applications for large-scale AI transformation, handling both frontend UX and secure API orchestration for LLMs interfacing with SAP and enterprise data.

You will lead build initiatives across flagship programs, delivering on-premise microservices and dynamic frontend apps within a Stage Gate delivery model, ensuring usability, security, and

Qualifications

• Experience architecting full-stack enterprise applications.
• Ability to design secure, scalable microservices and frontends.
• Familiarity with on-premise deployment and defense-grade security.

Responsibilities

• Design frontend interfaces and backend orchestration for AI agents.
• Build secure data access layer for SAP ecosystems and dashboards.
• Implement security, performance, and deployment best practices across the stack.

Skills

Frontend development

Backend architecture

Security

Data visualization

SAP connectivity

RBAC

Weaviate integration

Tools

React/Next.js

SAP S/4HANA

Ariba

Weaviate

Job description

Senior Full-stack Engineer Location: Abu Dhabi, UAE - Remote Global Type: Contract

We are seeking a Senior Full-stack Engineer to build the production-grade, end-to-end application architecture for a large-scale AI transformation. You will be the architect behind both the "face" and the "nervous system" of our AI agents, designing intuitive, highly responsive user interfaces alongside the secure API gateways and orchestration layers that allow Large Language Models (LLMs) to interact with industrial ERPs and sensitive engineering data.

You will act as the technical anchor for key build initiatives across our flagship programs. Your mandate is to move beyond simple model serving to build robust, on-premise microservices and dynamic frontend applications that power enterprise engineering platforms and autonomous AI agents. Working within a structured "Stage Gate" delivery model, you will ensure our software meets the strict usability, security, and reliability standards required for national defense infrastructure.

Key Responsibilities

• 1. End-to-End Agent Architecture & User Experience
  • Intuitive AI Interfaces: Architect and develop the frontend applications (e.g., React/Next.js) that allow end-users to interact seamlessly with AI agents. Build custom chat interfaces capable of handling streaming LLM responses, complex citations, and interactive widgets.
  • Agentic Frameworks: Design the backend orchestration layer (Agent of Agents) that coordinates specialized AI workers (e.g., Controllership Agent, Treasury Agent), managing state, task routing, and error handling.
  • Workflow Logic & State Management: Design the "Task Router" services and frontend state management that map user prompts to specific skills/playbooks, ensuring a deterministic and highly responsive execution of critical financial and engineering workflows.
• 2. Enterprise Integration & Data Visualization
  • Secure SAP Connectivity: Build the full-stack "Data Access Layer" (DAL) that serves as the secure gateway for AI agents to read/write to SAP S/4HANA and Ariba, surfacing this data via dynamic dashboards and interactive data visualizations on the client side.
  • RAG Integration & Search UI: Develop the backend logic to interface with Vector Databases (e.g., Weaviate) and build the frontend search components, enabling the "Knowledge Mining Chatbot" to securely query and render historical proposals and technical documents.
  • External Data Feeds: Construct robust connectors for external data (e.g., S&P Global, Orbis) to power Supply Chain Risk Scoring, building custom UI components to display comparative analysis and trade-offs.
• 3. Security, Performance & Deployment
  • Defense-Grade Security: Implement full-stack security measures. On the backend, enforce Authentication, Role-Based Access Control (RBAC), and PII/ITAR redaction.