Resume
| English | 日本語 |
Basic Information
| Item | Details |
|---|---|
| Name | Yuto Kimura |
| Date of Birth | September 1994 |
| Residence | Tokyo, Japan |
| Education | Tokyo Denki University, Graduate School of Science and Engineering |
| Platform | Link |
|---|---|
| Blog | biosugar0.com |
| Zenn | biosugar0.com |
| @biosugar0 | |
| biosugar0@gmail.com |
Education and Work Experience
| Date | Details |
|---|---|
| Mar 2019 | Completed Master’s Program in Life Science, Tokyo Denki University, Graduate School of Science and Engineering |
| Apr 2019 | Joined a startup company in Tokyo as a Backend Engineer |
| Jun 2019 | Left the startup company |
| Jul 2019 | Joined Smart Shopping Inc. as a Backend Engineer |
| Nov 2021 | Transferred to the SRE department at Smart Shopping Inc. |
Degree
- Master of Engineering, Major in Molecular Biology
Areas of Expertise
Engineering
- Backend API Development
- Microservices Development
- Domain-Driven Design
- Infrastructure as Code (Terraform)
- Cloud Infrastructure (AWS)
- Kubernetes (EKS) Deployment and Management
- Site Reliability Engineering (SRE)
- Application Development Using LLM
Other
- SRE Team Formation
- Promoting DevOps in Development Organizations and Improving Developer Experience
Skills
Programming Languages
| Language | Experience |
|---|---|
| Go | 5 years |
| Bash | 6 years |
| Python | 2 years |
| TypeScript | 1 year |
Other Experience
| Name | Experience |
|---|---|
| Kubernetes | 4 years |
| Docker | 4 years |
| Terraform | 3 years |
| GitHub Actions | 2 years |
| Datadog | 3 years |
| Vim | 7 years |
Work Experience
Startup Company in Tokyo (Aug 2018 - Oct 2018, Apr 2019 - Jun 2019)
Backend Engineer
- Developed backend for an automated platform for public cloud environment setup and operations
- Developed features to support GCP infrastructure setup
- Developed RBAC services used by microservices
- Developed a browser-based SSH session manager
Smart Shopping Inc. (Jul 2019 - Present)
Backend Engineer (Jul 2019 - Nov 2021)
- Full replacement of in-house inventory management SaaS
- Migration from EC2 to EKS
- Development of microservices
- Containerization
- Establishment of GitOps with GitHub Actions
- Terraform implementation
- Expansion of ordering functions, addition of ordering methods for medical institutions, development of bulk parameter change functionality
- Built a service health score foundation
- Automated testing for Go applications
SRE (Nov 2021 - Present)
- Re-established the SRE team
- Defined the role and mission of SRE
- Established methods for collaboration with product development teams
- Created an SRE roadmap
- Measured and visualized toil
- Improved CI/CD, reduced toil, standardized detailed design documents
- Enabled self-service infrastructure changes
- Optimized AWS costs: fixed memory leaks, adjusted resources with Datadog, migrated EBS to gp3
- Led productivity improvements, received the Findy Team+ Award 2023
- Developed GitHub Actions to split pull requests
- Simplified and automated deployment flow with GitHub Flow
- Facilitated regular meetings for identifying and resolving issues
- Enhanced observability: introduced structured logging, developed a common logging package
- Introduced GitHub Copilot for Business, set up OpenAI organizational accounts
- Managed k8s middleware with GitOps, developed an internal LLM Slack Bot
- Implemented Node Local DNS Cache, optimized server resources
- Codified new microservice deployment settings
- Managed Datadog monitoring settings with Terraform
- Simplified EKS updates
- Developed an AI meeting minutes system integrated with Google Drive
Project Examples
1. Enhancing EKS Usability and Security
- Project Overview: Improved the usability and security of the EKS infrastructure, enhancing developer convenience and reducing overall system security risks.
- Role: Responsible for planning, implementation, and operation.
- Achievements: Improved permission management with EKS Pod Identity, enhanced security and efficiency of secret management with external secret operator.
2. Developing an AI Meeting Minutes System
- Project Overview: Developed a system that automatically generates meeting minutes from video and audio files uploaded to Google Drive and allows searching and sharing via a Slack Bot.
- Role: Responsible for planning, implementation, and operation.
- Achievements: Reduced employee workload and improved productivity. Integrated the generated meeting minutes search function into the LLM Slack Bot.
3. Reducing Infrastructure Costs
- Project Overview: Controlled and reduced increasing infrastructure costs.
- Role: Solely responsible for planning and execution.
- Achievements: Reduced AWS costs by 15% monthly through fixing memory leaks, optimizing resource settings, and migrating EBS to gp3.
4. Simplifying EKS Updates
- Project Overview: Streamlined the EKS update process, reducing workload.
- Role: Responsible for planning, implementation, testing, and deployment.
- Achievements: Transitioned from bi-annual large-scale updates to incremental updates.
5. Introducing Structured Logging
- Project Overview: Changed application logs to JSON format in Go applications and integrated context information.
- Role: Responsible for planning, design, and development.
- Achievements: Enabled automatic log parsing and improved visibility with Datadog, facilitating detailed investigation.
6. Developing an Internal Slack Bot with OpenAI API
- Project Overview: Aimed to improve internal productivity by developing a Slack Bot integrating ChatGPT API.
- Role: Responsible for planning, infrastructure setup, application implementation, and deployment.
- Achievements: Provided an environment where all employees can easily use LLM, utilized in various scenarios.
7. Improving Development Productivity
- Project Overview: Promoted DevOps to improve developer productivity and enhance four keys metrics, awarded the Findy Team+ Award 2023.
- Role: Project leader responsible for regular facilitation, rule formulation, and implementation of cycle time reduction mechanisms.
- Achievements: Reduced the cycle time from commit to deployment from an average of 10 days to 1 day.
8. Enabling Self-Service Infrastructure Changes
- Project Overview: Implemented self-service infrastructure management using Terraform and GitHub Actions to enable development teams to independently make infrastructure changes.
- Role: Responsible for planning, implementation, and operation.
- Achievements: Automated infrastructure change processes via pull requests, improving development speed and reducing SRE team workload.
9. Re-Establishing the SRE Team
- Project Overview: Dedicated the SRE team to practicing Site Reliability Engineering to improve product reliability.
- Role: Led the re-establishment of the SRE team.
- Achievements: Re-defined clear mission, vision, and values, transforming the team into a proactive and autonomous unit.
Personal PR
I enjoy creating new things as an engineer, but I believe the essence lies in operations. I believe that by focusing on SRE and platform engineering, we can achieve a balance of development speed and stability, accelerating business not only in large enterprises but also in small and medium-sized organizations.
I am particularly drawn to businesses that provide services that make people’s lives more convenient or improve inefficient tasks. By accelerating such businesses as a software engineer, I aim to maximize human potential and create an exciting future.
In my current role, I work as an SRE with a deep understanding of backend implementation, engaging in a wide range of activities from infrastructure to server tuning, improving development experience, and enhancing organizational productivity.
Strengths
- Development related to backend and infrastructure
- Infrastructure as Code
- Automation of operations
Areas of Improvement
- Frontend development
- Implementation and development of native mobile applications
Work Preferences
Working Style
- Full remote work
Job Content
- Backend development
- SRE duties (improving site reliability, promoting automation, etc.)
- Infrastructure setup and operations
- Utilizing and implementing new technologies such as generative AI
Key Points
- Corporate culture that emphasizes documentation and asynchronous communication
- Striving for a balance between development speed and stability
- Contributing to service development that makes people’s lives more convenient
- Actively pursuing and incorporating the latest technological trends
Preferred Contract Type for Side Jobs
- Commission contract
Awards
2021 MVP Award | Smart Shopping Inc.
Received MVP award for the most outstanding employee in 2021.
Evaluation Points:
- High motivation and ownership in improving the development environment
- Actively addressing customer and operational issues
- Proposing and implementing solutions for building an ideal SRE team
2023 Findy Team+ Award
Received for achieving significant improvements in developer productivity and four keys metrics through DevOps promotion.
Publications
- Local Development Environment for Microservices in Sync with Kubernetes Clusters
- Running Playwright with AWS Lambda Container Image
- Using Salesforce Bulk API from Go
- Transitioned from Backend Engineer to SRE
- Started Measuring and Tracking Toil
- Transition to Telepresence2
- Re-establishing the SRE Team and Creating Mission, Vision, and Values
- SRE Team Faces DevOps and Accelerates Development