Martin Saul

• Co-designed elastic worker orchestration for a dev-infra automation fleet (7,500 hot instances across 15 production cells); sole owner from POC through production. Replaced hardcoded single-template provisioning with purpose-built ephemeral workers - per-task binary versions, right-sized resource profiles, completion-driven teardown.
• Tiered scheduling reserves the static warm pool for priority traffic while standard traffic shifts to dynamic workers; rollout projected to reclaim ~half of production fleet capacity and eliminate the non-prod static footprint entirely.
• Redesigned fleet authentication, centralizing credential custody in the orchestrator - replaced per-worker refresh-token self-management with short-lived access-token vending; eliminated hardcoded secrets in source and credential logging, migrating secrets to managed storage.
• Mentors junior engineers and hosts a SWE intern through Sep 2026.

• Designed and delivered the real-time sourcing engine for Google's internal hardware-logistics platform - sole designer; built the core engine, directing two engineers on client-application integration. Continuously re-plans up to ~10K concurrent orders via hourly reconciliation against inventory shifts and change requests, optimizing across tax codes, freight cost, and regulatory load constraints with packing-aware load estimation. Concept to production in six months.
• Built automated failure-triage for material-transfer errors: classifies root cause (approved-source stockouts vs. third-party manufacturing delays) and routes tickets to the owning component and assignee by project context, material, location, and urgency - cutting reaction time on material-blocked builds from weeks to days and virtually eliminating orders lost to unowned failures.

• Built dynamic rule distribution for ads-abuse enforcement: sensitive-data and abuse-signal matchers propagate to serving systems in seconds, without restarts - replacing a manual commit-and-deploy cycle, cutting time-to-enforcement from hours to seconds and permanently eliminating ~14 engineer-hours/week of release toil.

• Planned and executed S3's production DNS migration from a legacy stack to native Route 53 across every zone - a change where any failed cutover meant zone-wide S3 unavailability, taking the broad set of AWS services that depend on S3 down with it. Completed with zero customer-facing incidents.
• Designed an extensible tax-calculation system, initially scoped for Mexico, since adopted worldwide.

• Connected - Senior Software Engineer, Toronto · Aug 2018 - Mar 2019: IoT content-delivery microservices sustaining 300+ devices/sec (Java, Spring Boot, Kubernetes); ran weekly TDD training for 16+ engineers.
• TWG - Senior Software Engineer, Toronto · Sep 2017 - Aug 2018: high-throughput AWS messaging backend (SQS, RDS, Java, Guice); C# Active Directory sync for 15,000+ users and groups.
• Stefanini (Dell, AGCO) - Senior → Lead Java Developer, Brazil · Nov 2014 - Jul 2017: led a 4-engineer team; global schematics-sync pipeline (200MB+ XML; Spring Boot, Camel); credit-bureau rules-engine integrations.
• Dell Brazil; ISul Tecnologia - Software Developer, Brazil · 2011 - 2014.

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