Satoshi Konno.

April 2018 - February 2026

NewSQL platform lead - FractalDB

Established the NewSQL team and led strategy, planning, architecture, implementation and operations for FractalDB, an on-premises, multitenant distributed database serving multiple services.

Evaluated cloud and open-source NewSQL technologies and supervised engineering interns.

• FractalDB: LINEヤフーのオンプレミス・マルチテナンシー型データベースシステムの紹介 (LINEヤフー Tech Blog, Japanese)

April 2020 - September 2023

Database researcher - CTO Tech Lab

Researched medium- and long-term database needs and technology strategy in a CTO-directed research organization; collaborated with platform teams.

October 2015 - September 2022

NoSQL platform engineering - Apache Cassandra

Maintained and operated large Cassandra clusters, developed monitoring and automation, and handled incident recovery. Supported DataStax Enterprise adoption and engineering coordination.

Helped engineers develop upstream maintenance and contribution skills, mentored interns, and presented at international and domestic events. Researched automated root-cause analysis and recovery, resulting in PRDC and IPSJ publications.

April 2016 - September 2016

CTO Technology Intelligence

Investigated emerging technologies and communicated technical findings to management and engineers.

October 2014 - September 2015

Cloud and Kubernetes infrastructure

Built private-cloud and container infrastructure and supporting certificate-management, private-registry and CI/CD tooling.

October 2014 - March 2016

Kuro-obi (Black Belt) - distributed architecture

CTO-appointed specialist recognition in distributed architecture. Conducted technical research, wrote about consistency and distributed programming models, and shared findings through conferences and community activity.

April 2013 - September 2014

SWAT engineer - CTO Technology Strategy

Modernized legacy web, blog, advertising and SMTP platforms, replacing difficult-to-maintain implementations and frameworks with maintainable architectures. Work spanned Perl/PHP, C, Java and database migration.

Refreshed the legacy topics module on www.yahoo.co.jp.

October 2011 - March 2012

Internal KVS / NoSQL platform selection

Evaluated Couchbase and participated in the selection and introduction of Apache Cassandra for an internal key-value platform.

July 2010 - September 2013

iOS application engineering

Developed the Yahoo! JAPAN official app, including voice search, Tap & Shake interactions and a magazine-style in-app browser/UI refresh.

Implemented UI alignment and features for the ヤフオク! application: relisting, free listings, saved drafts and charity listings. Developed the つくるーぷ iOS community app.

Worked on Yahoo!ボックス, あんしんねっと and business-browser features, iOS6/iPad support, shared YJFoundation components for multipart uploads/camera control, and Y!マーケット web-front-end tooling.

• Yahoo! JAPAN — current App Store listing
• Yahoo!オークション — current App Store listing

October 2005 - June 2010

IPTV and digital-home engineering

Collaborated with television manufacturers and broadcasters on IPTV service specifications, implementation and verification through the IPTV Forum. Worked on Toshiba and SHARP television portal/search/map/news/weather services and mobile-device integration.

Implemented UPnP/AV and DLNA home-network server prototypes, assessed SDKs and coordinated integration with NAS and TV vendors. Evaluated streaming and DRM technologies.

Prepared executive demonstrations and technical presentations in Japan and during CES, and supported CEATEC keynote/exhibition demonstrations. Attended WWDC 2008 and proposed an iPhone application development strategy.

Supported CEATEC 2007 demonstrations for the Yahoo! Everywhere initiative, extending Yahoo services beyond PCs and phones to televisions and other connected devices.

• CEATEC 2007: Yahoo! Everywhere — contemporaneous event report

2006 - 2013

Engineering standardization working groups

Product Development Process: April 2006 - September 2007; security consultation: October 2007 - March 2009; Web API design guidelines and adoption: April 2009 - March 2010; OSS inbound/outbound practice and consultation: April 2012 - September 2013.

2002 - 2005

Telecommunications network management

Designed and developed carrier/ISP network-management solutions and supported load-balancer introduction. Built SNMP traffic monitoring, router-log/configuration tooling and FTTH/ADSL speed-measurement systems on Linux using C++/PHP.

2001 - 2002

ITS and telematics

Supported requirements definition for open-platform vehicle information services and developed Windows/Linux ASP prototypes.

1998 - 2001

eArena e-commerce portal

Helped build and operate an Akihabara multi-shop portal with support from Impress and Intel, covering specifications, Oracle/ASP implementation and content-submission tooling.

1997 - 1998

Public infrastructure systems

Designed and implemented municipal water/sewer mapping and earthquake-information relay systems using C++, Windows, Access and SQL Server.

1992 - 1997

3D and virtual-reality systems

Developed shared virtual-space infrastructure, research simulators and distributed VR applications, including public-facility earthquake-evacuation simulations.

Developed IRIX/Windows magnetic-tracker, data-glove and joystick drivers and packaged a commercial visual programming language for 3D applications.

1992 - 1997

Sense8 VR SDK localization and support

Provided Japanese technical support, localization, documentation translation and customer training for Sense8 VR tools across IRIX, SunOS, WindowsNT and DOS-Extender. Developed Netscape/Macromedia Director panoramic-viewer plugins.