BigBasket (a Tata group company) runs India's grocery e-commerce at heavy scale across express and scheduled delivery, dark stores, and BB Now, so its SWE loop pushes hard on system design and backend depth.
About BigBasket
BigBasket is India's largest online grocery platform, now a Tata Digital subsidiary after the Tata Group acquired a majority stake in 2021. It serves 30+ cities with express grocery delivery (BB Now: 10-minute delivery) and scheduled slots.
Resume screen: backend or full-stack scale experience and strong fundamentals help; referrals improve odds
Online assessment or DSA screen: medium DSA problems and problem solving
Coding rounds: data structures, complexity, and clean implementation
System design round: grocery-scale architecture with inventory, slots, and delivery
Hiring manager round: ownership, trade-off reasoning, and team fit
Online assessment or DSA screen (60 to 90 min)
medium DSA problems on arrays, strings, hashmaps, and trees or graphs.
Coding rounds (45 to 60 min each)
implement solutions with correct edge-case handling and discuss time and space complexity.
System design (60 min)
design inventory, slot availability, or cart at scale across dark stores; defend consistency, caching, and availability trade-offs with numbers.
Hiring manager (30 to 45 min)
ownership stories, trade-off reasoning, and fit for a high-scale grocery platform.
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