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Sonic — Designing for a 2-Hour Delivery SLA

Lenskart · Product Designer · Darkstore operations
Design complete · Awaiting development

Background & context

Lenskart launched Sonic, a 2-hour eyewear delivery service, with a pilot darkstore (DEL1) in Delhi. Unlike standard Lenskart orders — fulfilled from a plant over days, across different stations — Sonic requires the entire process of frame picking, lens cutting, fitting, QC, and handover to a delivery rider to be completed within a single 2-hour window.

The operator portal it inherited was built for standard fulfilment: a table-based order management interface where operators periodically check for new work. That passive model is fundamentally incompatible with Sonic’s time-critical nature.

Core problem

The operator has no active signal that a new Sonic order has arrived — they must notice it themselves by watching the portal. In a 2-hour SLA, every minute of delayed pickup compounds downstream: a 10-minute delay at the start leaves only 110 minutes for lens cutting, fitting, QC, and last-mile delivery.

My role

I led the design for this feature — an operator experience built around active signals and countdowns instead of passive tables.


Some snippets

Sonic orders dashboard — kanban of orders to be picked, in progress, and ready for handover, each with a live countdown
Sonic orders — live countdowns against the 2-hour SLA
Sound notification pattern for new Sonic orders
Active sound notification when a new order lands