Mekuru — Japanese EPUB & Manga Reader
Built and published a Japanese reading app with offline dictionary lookup via MeCab tokenization, vocabulary tracking with Anki export, and localization in 4 languages across 40+ releases.
Matthew Ostrowski
Software Development Engineer Tokyo, Japan
Software Development Engineer with 6 years of experience architecting and delivering scalable cloud-based systems at enterprise scale. Proven track record at Amazon building high-impact services processing thousands of daily requests across 67 countries. Organization-wide hackathon winner leveraging AI to automate workflows. Skilled in AWS infrastructure, full-stack development, and leading cross-functional teams in agile environments, and shipping independent mobile and ML projects. Business-level Japanese proficiency (JLPT N2).
Experience
Amazon
Software Development Engineer II
Boston, MA
- Led 3 engineers to architect API Gateway and Lambda middleware (Kotlin, Python) bridging new and legacy onboarding systems, enabling phased regional rollout with automatic rollback for ~1–2K new candidates ingested weekly out of ~7K corporate hires
- Won first place in an organization-wide hackathon by building an AI-powered ticket triage system that categorized and auto-responded to support requests using AWS Bedrock, Lambda, SNS, SQS, DynamoDB, React, and TypeScript
- Led an 8-person cross-functional team as Scrum Master to ship a personal information management portal on AtoZ serving 1.5M employees, ensuring compliance with laws and regulations across 67 countries
- Designed a DynamoDB single-table data model with an OpenSearch analytics pipeline for long-term storage, supporting an onboarding system tracking ~15,000 concurrent candidates across 13 contingencies
- Developed a notification engine using DynamoDB, Lambda, and SNS that calculated and dispatched 80,000 reminder alerts within 6 months to employees with incomplete life events
The Cape Cod Five Cents Savings Bank
Software Developer I
Hyannis, MA
- Engineered a full CI/CD pipeline from development to production with automated regression testing using GitLab Runner, xUnit, and bUnit, reducing deployment risk and accelerating release cycles
- Saved over $2,500 annually by designing multiple C# automation programs to replace licensed software, including a real-time ATM status monitoring tool running at one-minute intervals
Projects
Mekuru OCR Server
Companion OCR server using ML models for manga text detection and recognition, with Docker containerization for GPU-accelerated deployment and Firebase Cloud Functions for service orchestration.
80K Alerts
Notification Engine
Designed and developed a reminder system at Amazon that calculated and dispatched 80,000 alerts to employees with incomplete life events over 6 months.
1st Place Hackathon
AI Ticket Triage System
Built an AI-powered system that categorized and auto-responded to support requests. Won first place in an organization-wide hackathon.
1.5M Users
AtoZ Employee Portal
Led an 8-person cross-functional team to ship a personal information management portal serving 1.5M employees with compliance across 67 countries.
Skills
Cloud & Infrastructure
AWS BedrockAPI GatewayLambdaDynamoDBSNSSQSS3AthenaQuickSightGlueOpenSearchFirebaseDockerCI/CD Pipelines
Languages
KotlinPythonJavaDartC#SQLTypeScriptJavaScriptHTMLCSS
Frameworks & Tools
AWS CDK/SDKFlutterReactFastAPIGitGitLabGitHub Actions
Education
Apr 2025 – Present
Japanese Language School
Intensive Japanese Language Program
Tokyo, Japan
- Full-time study toward advanced Japanese proficiency
- JLPT N2 certified
March 2019
University of California, Davis
Bachelor of Science in Computer Science
Davis, CA
- GPA: 3.52
- Dean's List: Spring 2016, Fall 2017