Tomoya Akase

[Project Overview]

A smart city construction project where residents and inventors create future technologies through experiments.

[My Responsibility]

• As a architect, I was involved in the overall design that spanned multiple teams.
• In particular, I was involved in the consent management system for passing residents' PII to inventors in a privacy-safe manner.

[My Contributions]

• Implementing the Golang app for hypothesis verification regarding consent management
• Gathering opinions among teams and considering and proposing the path forward based on company policy

[Technologies]

Kubernetes / Golang

[Project Overview]

Finding a way to reduce mistakes in setting changes by implementing IaC configuration management for Cisco devices

[My Responsibility]

As a infrastructure engineer, I surveyed Terraform module to manage Cisco devices by IaC.

[My Contributions]

• Achieved to manage Cisco SDN settings using Terraform
• Combine Github and Argo to create a CI/CD pipeline to realize GitOps
• Consideration of a mechanism to merge change differences into IaC code when changed Cisco SND settings directly

[Technologies]

Terraform / Cisco ACI

[Project Overview]

This project will construct a system that will detect license plates, human faces, etc. by applying machine learning inference to video from surveillance cameras, and will perform masking processing on them.

[My Responsibility]

• As an infrastructure engineer and architect, I built and designed a architecture how to run/scale/etc.. processing/inference applications on k8s.

[My Contributions]

• Creating documents(including IaC) how to build/deploy/manage apps on the EKS
• In particular, we used AWS CDK (Typescript) to convert work that had previously been done manually to IaC.
• Investigation and realization of how to use Nvidia GPU on EKS, ECS
• Investigation and implementation of methods to use AWS Inferentia on ECS
• Investigation and comparison of inference methods provided by AWS such as SageMaker and AWS Inferentia
• Creating the video segmentation app using Rust (to adjust the input size of streaming processing)

[Technologies]

Kubernetes / AWS / Golang / Rust / Gstreamer / FFmpeg

[Project Overview]

It was a PoC project to verify the migration of a streaming system that was running on-premises to the AWS cloud. Specifically, we aimed to realize elasticity by including Apache Kafka.

[My Responsibility]

• As a architect, I designed ETL system using k8s and some middleware.
• As a developer, I implemented ETL app by Golang from scratch.
• As an infrastructure engineer, I maintained/optimized k8s cluster and AWS environment.

[My Contributions]

• Worked on everything from design to implementation of k8s and Golang applications.
• Performance optimization throughout infrastructure and applications
• Achieved the best results among the comparison targets.

[Technologies]

Kubernetes / AWS / Golang / Java / Redis / ElasticSearch / Kafka / Pulsar

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These architectures are summarized below.

• https://zenn.dev/esaka/articles/3f543d79ddeb5f
• https://zenn.dev/esaka/articles/fec9d7f2a477bd

[Project Overview]

In this project, we built an ETL system that processes large amounts of data to be used in automation driving technology. Furthermore, by comparing several implementations for that, we investigated the best way in terms of cost-performance.

[My Responsibility]

• As a architect, I designed ETL system using k8s and some middleware.
• As a developer, I implemented ETL app by Golang from scratch.
• As a infrastructure engineer, I maintained/optimized k8s cluster and AWS environment.

[My Contributions]

• Worked on everything from design to implementation of k8s and Golang applications.
• Performance optimization throughout infrastructure and applications
• Achieved the best results among the comparison targets.

[Technologies]

Kubernetes / AWS / Golang / Java / Redis / ElasticSearch / Kafka / Pulsar

[Project Overview]

A project to build and maintain a large-scale streaming system that uses mobile-phone's location information to create people flow analysis data.

[My Responsibility]

• As a infrastructure engineer, to build and maintain a k8s cluster on the closed-network AWS VPC(at this time, there were no AWS EKS and it was challenging task)
• As a DevOps engineer, to build and maintain a k8s cluster on the closed-network AWS VPC(at this time, there were no AWS EKS and it was challenging task)

[My Contributions]

• Realized a way for building a k8s cluster and deploying applications on the VPC that does not allow even using NatGW.
• To do the above, multiple splitting steps are required. I've converted it to bashscript and prepared it as a Jenkins job to easily accomplish this.

[Technologies]

AWS / Kubernetes / kops / Jenkins

[Project Overview]

Development project of a QR code electronic payment system composed of microservices.

[My Responsibility]

• Implementing some services of the microservices
• As the leader of the development team, I was responsible for task management

[My Contributions]

• Design/development of microservices using Java Spring Boot
• Team task management, code reviews, etc.
• Development of a test tool that realize integration testing of microservices

[Technologies]

Java8 / Spring Boot / Jenkins / ConcourseCI / Docker / GitHub / Openstack

[Project Overview]

A system development project that alleviates traffic congestion by controlling the lighting time of traffic lights.

[My Responsibility]

• Implementation/testing/development of backend and frontend
• Private cloud infrastructure management

[My Contributions]

• Implementing Vue and Python code based on the chief engineers design
• Build an OpenStack cluster for the team's development environment on the customer's server rack・management

[Technologies]

Javascript(React, Vue.js, Node.js) / Python / Open Stack / Docker / gRPC / Redmine / Postgresql