Software Development

Building offline-first CBT for unstable networks

How we built a resilient examination engine for schools across regions with intermittent connectivity.

Product EngineeringJan 14, 20257 min read

Sync architecture

Local-first storage with conflict-free merge on reconnect, plus deterministic replay so no answer is lost when networks drop mid-exam.

Per-session crypto keys, kiosk lockdown and tamper-evident logs satisfy examination boards.

"Engineering excellence is invisible when it works — but the difference is felt every day."
— Product Engineering

#EdTech#Offline-first#CBT

How we architect zero-trust segmentation across multi-site deployments — and why perimeter thinking no longer holds up.

Lessons learned migrating 1,200+ users to a unified cloud PBX across 14 branches.

Sizing, monitoring and ROI for hybrid solar deployments — what we learned from a 150 kVA build.