Full Stack Engineer at Aon

Aon is a global leader in risk, retirement, and health solutions, and its technology arm is rapidly expanding to deliver data‑driven platforms that empower clients worldwide. As a Full Stack Engineer at Aon, you will work on mission‑critical insurance products that leverage AI, cloud analytics, and real‑time data pipelines, giving you exposure to enterprise‑scale challenges and a chance to influence product strategy across multiple markets. The collaborative culture encourages continuous learning, with access to world‑class mentors, internal tech talks, and sponsorship for certifications, ensuring your career trajectory accelerates alongside the company's digital transformation journey. Beyond the technical allure, Aon offers a balanced work environment across its major Indian hubs—Bangalore, Noida, and Gurgaon—providing flexibility, vibrant community events, and a clear path for advancement into senior engineering or product leadership roles. The company's commitment to diversity, sustainability, and social impact means your work contributes to solutions that protect people and businesses globally, making each line of code part of a larger purpose that resonates beyond the office walls.

Prepare for a holistic interview that blends coding depth with system design breadth. For the coding round, focus on writing clean, production‑ready code in Java or JavaScript, emphasizing efficient use of data structures (hash maps, trees) and algorithmic thinking (sorting, searching, recursion). Practice full‑stack scenarios where you must build an end‑to‑end feature—e.g., create a REST API with Spring Boot, connect it to a PostgreSQL table, and consume it via a React component—so you can demonstrate both backend logic and front‑end integration under time constraints. For the system design and architecture segment, study microservice patterns, API gateway strategies, and AWS services (Lambda, ECS, RDS). Be ready to sketch a scalable solution for a high‑volume insurance claim processing system, discussing data partitioning, eventual consistency, security (OAuth2/JWT), and CI/CD pipelines with Docker and Kubernetes. Show your thought process on trade‑offs (synchronous vs. asynchronous communication) and how you ensure observability through logging, tracing, and monitoring. Tailor your answers to Aon's domain—highlighting how you would handle regulatory compliance, data privacy, and real‑time analytics in a fintech context.