Soma Utsumi

Developed new features and refactored legacy microservices for the core system. Fixed a critical bug in the core API that restored correct Malop status for millions of endpoints.

Developed a workflow engine and microservices for Re:Earth Flow, an open-source ETL tool for GIS data. Developed a processor that compiles user scripts into WebAssembly and executes them on a WASM runtime, enabling customized workflows.

Worked with a global team to improve system reliability for the core system. Designed and developed custom metrics to improve observability across 3,000 servers, cutting problem resolution time by 50%.

Developed internal APIs and tools that improved developer productivity across the organization. Developed a generator tool for Kubernetes manifests and Terraform configurations, reducing initial deployment time by 90%.

Designed and developed AI/LLM applications for Japan's largest financial institutions. Developed a scalable notification system, allowing financial institutions to track workflow status.

Improved system reliability for 20 microservices by developing and enhancing observability features. Collaborated with teams to implement monitoring and alerting solutions.

Designed training and inference pipelines for LLMs and developed enterprise applications. Developed a serverless training pipeline for fine-tuning LLMs, significantly reducing training costs.

Led the development team as CTO while personally developing the entire backend code from scratch. Designed SLIs/SLOs and developed custom metrics and tracing to improve reliability, securing a major enterprise contract.

Analyzed large-scale user data to improve advertising performance. Analyzed data from millions of users and designed A/B testing, which improved 7-day retention by 10%.

Developed the backend system for the media platform. Contributed to the design and implementation of core functionalities.

Currently pursuing a Master of Science in Computer Science, focusing on AI Fundamentals and Distributed Systems. This online program from the University of Colorado Boulder allows for study from Japan.

Earned a Bachelor of Engineering, where I developed statistical models in Python to improve medical decision-making. This work culminated in a published paper.

Completed a Business English Course in Los Angeles to enhance communication skills. This program focused on improving proficiency in a professional context.