About

Work Experience

• Senior Software Engineer (Founding Team), Amazon Location Service, Amazon / Amazon Web Services

  Aug, 2019 - Present

  • Took Amazon Location Service from PR/FAQ to GA across 15+ AWS regions

  • Architected patented key-value geometry store for real-time geofencing, multipolygon support, and nearest-neighbor queries

  • Reduced geofence event latency by 90% (1.5s to 200ms), enabling $4M+ ARR at 6,000 TPS and 2.2B+ requests/year

  • Built address parsing model (BERT/DistilBERT) with 98.23% recall for postal certification

  • Led 25+ design reviews per quarter across Vancouver, SF, and Austin teams

  • Designed patent-pending retroactive event correction system for out-of-order geofence evaluation

  • Built and operationalized US address validation and CASS certification systems

• Software Development Engineer, Payments, Amazon

  Jan, 2018 - Aug, 20191 year 7 months

  • Designed patented authentication federation enabling 3M customers to pay credit cards on Amazon.com

  • Introduced single-microservice-per-domain architecture pattern adopted as team standard

• Co-Founder & CTO, GObd

  Nov, 2014 - Mar, 20172 years 4 months

  • Led 30-person team (firmware, backend, mobile, ops) building Bangladesh's first real-time traffic platform

  • Designed GPS tracking hardware and congestion-aware routing serving 100K+ users, 20M+ data points

  • Scaled platform to logistics/delivery (6,000 daily deliveries at peak)

• Software Engineer, Vizrt

  Jul, 2013 - Dec, 20174 years 5 months

  • Built broadcast graphics and media asset systems for global newsrooms

  • Led data server migration from relational to high-performance graphics database

Skills

Education

Certificates

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