Technical Architect – AI-Powered Self-Service Platform (Cloud + Agentic AI)
Role Overview
We are looking for a senior, hands‐on Technical Architect to lead the design and delivery of a next‐generation AI‐powered self‐service platform for a large enterprise client in the media and advertising sector. The platform enables users to move from a natural‐language brief to a fully priced, bookable plan in minutes.
The solution is a containerised .NET Core + React application deployed on AWS EKS, integrated with the client's internal order management system (via async queue) and CRM (via custom APIs), augmented by a conversational AI agent hosted on GCP Vertex AI Agent Engine (Google ADK / LangGraph / Gemini).
The role blends enterprise application architecture, cloud‐native engineering and Agentic AI design — ideal for a senior engineer‐architect who has evolved from strong backend/full‐stack roots into cloud + AI system design.

Key Responsibilities
Own end‐to‐end architecture across UI (React/Node/TypeScript), API (.NET Core), integrations, cloud and AI layers
Architect API‐first, event‐driven, cloud‐native solutions on AWS EKS with enterprise CI/CD
Design the Agentic AI layer on GCP Vertex AI (ADK / LangGraph / Gemini),



aligned with client's data platform
Define integration patterns: async messaging (AWS MQ) with OMS, and custom CRM APIs
Enforce trust boundaries, entitlements, audit and multi‐tenant isolation through the core API
Design in‐app identity + MFA for MVP, with a clean path to Auth0 / OIDC
Guide teams on design, coding practices, evals, guardrails and delivery excellence
Partner with Product Owner, Delivery Lead and client architecture / security stakeholders

Required Skills & Experience
12+ years total experience; 4+ years as Technical / Solution Architect
Robust hands‐on in .NET Core (mandatory) and React / Node / TypeScript
Hands‐on Agentic AI experience with Vertex AI, Google ADK, LangGraph, Gemini
Solid CRM (Salesforce or equivalent) + async integration experience
Solid understanding of security, identity (MFA, OIDC/Auth0), audit and multi‐tenant design
Prior exposure to media, broadcast, ad‐sales (OMS/TMS) or BFSI is a plus
Solid communication, leadership and Agile delivery mindset

Preferred Certifications
AWS Solutions Architect · GCP Professional Cloud Architect · Generative AI Leader/Engineer
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📌 Ai Architect Sydney
🏢 BULLIT MANAGEMENT SERVICES
📍 Sydney