BlinkHealth / BlinkRx · Senior — 4 rounds, OA + HLD + system design, no decision

Round 1 — Online Assessment (HackerRank)

• 10 MCQs: 5 software engineering + 5 AI
• 1 DSA problem: Medium/Hard difficulty
• 1 API Development task
• 1 Prompt Engineering task (optional)

Round 2 — HLD + AI-Assisted Development

I was asked to design an idempotent layer on top of a service for operations like order creation. The requirement was to handle multiple order create events from the client without duplicates.

The interviewer asked me to implement this using an AI Agent of my choice.

Round 3 — System Design Discussion

I had to design a medicine development platform and discuss:

• How to define microservice boundaries
• Communication patterns between services
• Database choices per service
• Asynchronous communication technologies (if needed)
• Potential AI applications and how they could add value

Round 4 — HLD + Project Discussion

I designed a ServiceNow-like system for raising support tickets and managing follow-ups, followed by discussion of my previous project's design and technical choices.