Byron Mahinya Isaac

• Triaged and resolved 307+ enterprise customer incidents across SageMaker and Big Data services on AWS, maintaining a 4.8/5 customer satisfaction rating.
• Led implementation of a Feature Prioritization Model within the support tools team, establishing evaluation criteria based on security and customer impact — accelerating delivery of high-priority improvements.
• Integrated an LLM-powered chat summary tool into the global support dashboard, eliminating manual summary drafting for thousands of support engineers worldwide.

• Developed and maintained the backend for an event-sourced payment and sales system processing 60+ tonnes of cooking oil monthly across 600 machines, 170 shops, and 3 refilling trucks — directly supporting the company's mission to remove 28 tonnes of plastic waste from the supply chain.
• Migrated 10+ microservices from legacy PHP to Golang, achieving a 200% increase in event throughput (180 → 430 events/min), 75% less memory usage, and 62.5% reduction in server costs ($320 → $120/day).
• Implemented distributed tracing across all microservices using New Relic, reducing system failure resolution time by 60%.
• Automated infrastructure deployment with Terraform, improving deployment efficiency by 40% and enabling rapid environment provisioning.
• Designed and implemented multi-tenant PostgreSQL architecture, improving application performance by 50% and simplifying data management.
• Owned end-to-end delivery: database design, API development, authentication/authorization, security, and production hosting.

• Built a computer vision grading module using PyTorch for counting and grading agricultural stems, improving grading accuracy by 75% over manual processes.
• Implemented gRPC client streaming for image delivery, reducing mobile data usage by 45% — critical for users in low-bandwidth environments.
• Designed and validated AI solutions aligned with business objectives, contributing to a 20% increase in revenue from AI-driven recommendations.
• Built API endpoints for interfacing with the grading module in production.

• Developed a credit scoring model using SparkML and Kafka for a Digital Sacco client, reducing loan default rates by 29% within 4 months — directly improving financial outcomes for underserved communities.
• Built Spark cron jobs transferring 10GB of data daily from cloud to on-premise servers, enabling timely access for BI and data science teams.

Designed and built a multi-tenant logistics backend serving three independent courier businesses in Nairobi, covering parcel intake, dispatch, driver assignment, and same-day delivery tracking. Ongoing support and maintenance.

Built an automated document formatting tool for Kenyan legal professionals, enabling court-compliant line numbering for pleadings, affidavits, and submissions. Integrated M-Pesa payments and supports High Court and Magistrate Court formatting standards per Kenya Civil Procedure Rules.

Built an AI-powered legal research assistant helping Kenyan litigators identify relevant case law, reducing research time significantly. Currently serving 349 paying monthly subscribers.

Architected and built a system to digitize business operations, eliminating manual paperwork. Still in active use by the company.

Organized virtual and in-person technical events impacting students globally. Led the IoT team using Azure IoT, Arduino, and Raspberry Pi.

Led technical training sessions across multiple technology domains.