Experience

READYFOR株式会社

• Japan
• Information Services
• 1 - 100 Employee

• 執行役員 VP of Engineering

  • Jan 2022 - Present

• VP of Engineering

  • Oct 2019 - Dec 2021

  As a VP of engineering, led 30+ engineering team to made a significant impact to the business growth from product/engineering/organizational stand point.Product Growth- UX improvement for crowdfunding contributors- Renewal of Admin functionalities for crowdfunding owners- Implementation of back office settlement systems for automating the crowdfunding settlement workflow- Improve the capacity bandwidth along with crowdfunding demand growth after COVID-19 pandemic Engineering Growth- Decouple monolithic Rails application into API-based backend system and Next.js/React/TypeScript based frontend system.- Introduced Autify to automate end to end regression testing and reduced QA cost- Introduced OpenAPI based scheme driven development- Improved scalability and deployability with containerization of backend services and migrated to ECS based platform- Refactoring of legacy architecture into modifiable coherent architectureOrganizational Growth- Made a significant growth of engineering team from 10 to 30+ engineers in 2.5 years- Introduced OKR based goal setting workflow and formulated Spotify model Squad based cross-functional organization.- Created HR functionalities in engineering division and executed recruiting strategies, on-boarding processes and operation - Established Technology branding team



freee.k.k.

• Japan
• IT Services and IT Consulting
• 200 - 300 Employee

• Engineering Strategy

  • Jan 2019 - Oct 2019



FOLIO

• Within 23 wards, Tokyo, Japan

• Managing Director / Financial Technology

  • May 2017 - Jan 2019



Goldman Sachs

• United States
• Financial Services
• 700 & Above Employee

• Senior Engineer, Vice President

  • Jan 2017 - May 2017

  Promoted to Senior Engineer as of Jan 1st 2017.

• HIPP Engineer / Vice President

  • Aug 2014 - Dec 2016

  Worked as a lead technical engineer in HIPP (High Impact Project Pod) team as part of Enterprise Platforms department in Asia Pacific region. Made significant impact to various projects in the region.* Lead the global project to migrate GS Collections (https://github.com/goldmansachs/gs-collections) to Eclipse Foundation and re-brand it to Eclipse Collections (https://www.eclipse.org/collections/). After the migration, Eclipse Collections achieved more than 27,000 downloads per month and we've successfully acquired 7 contributors from the open source community.* Be proponent of open sourcing internal projects, and contributed to implement internal workflow for GS engineers to contribute to open source development.* Gave presentations at major technical conferences and also wrote articles regarding open source libraries, software quality topics (reference below).* Contributed performance improvement enhancement to Java (OpenJDK). Improved performance by 9 times for parallel stream iterations of random access data structure that does not extend Java ArrayList.* Consultation on testing uplift and refactoring of legacy Equity order management system* Implemented transaction reconciliation application as part of client subledger legacy system elimination project.* Implemented test maturity metrics analysis web application for whole application teams in Technology division* Implemented IDE Plugins for project management efficiency.

• Technical Architect / Vice President

  • Jan 2012 - Aug 2014

  Promoted to Vice president as of Jan 1st 2012. Expanded the lead Technical Architect role to whole Asia Pacific PARA (Proprietary Accounting and Risk Analysis) team.* Played a key technical architect role in P&L attribution project to accommodate Volcker Rule. The team has achieved agile and flexible implementation as part of the project.* Lead a global project to get rid of legacy calculation units and convert them into strategic intraday pnl calculation services. With this legacy elimination, we got rid of all Solaris infrastructure and reduced significant amount of cost.* Mentor engineers in the Bangalore (current Bengaluru) team in addition to Asia Pacific team from technical aspects (design review, code review, pair programming etc.).* Improved performance of Trading Account Master System by 20 times for application start-up time and window open time.* Played a technical architect role as part of Data Center move project in Asia Pacific region. Executed critical infrastructure testing in preparation and achieved smooth transition before and after the move.

• Technical Architect

  • Jan 2009 - Dec 2011

  Worked as a lead Technical Architect for PARA (Proprietary Accounting and Risk Analysis) Tokyo team. Worked on wide range of software development life cycle such as design, development, test, support, code review, training etc.* Designed and developed account/product level lock mechanism for batch processes. This improved performance of batch processing along with parallelizing application services.* Worked on accounting batch processing refactoring project as part of Bank Holding Company transition project.* Executed firmwide BCP test coordination.* Executed global QA testing coordination involving Controller users.* Developed and executed TDD training module.* Participated in New Grads Recruiting team and lead internship program development team.

• Application Developer

  • Apr 2005 - Dec 2008

  Worked as an Application Developer for PARA (Proprietary Accounting and Risk Analysis) team in Tokyo team.* Developed real time booking services and pricing modules.* Worked on Korea GAAP project as part of opening of Korea branch office and FX trading workflow in Asia Pacific region.