Hirotaka Kawata
Staff Software Engineer at Money Forward, Inc.
Ichikawa, Japan
Summary
👤
Senior🎓
Top SchoolHirotaka Kawata is a staff software engineer with 16 years of experience building large-scale, high-performance backend systems, currently driving backend standardization at Money Forward. He spent a decade at LINE, leading backend and IoT efforts—designing messaging and bot delivery pipelines that handle billions of followers and shipping LINE Things firmware for BLE devices like M5Stack and micro:bit. His strengths lie in asynchronous I/O, OS-level performance tuning, and systems that combine hardware, firmware, and cloud microservices (Kotlin, gRPC, Kafka, R2DBC). He has led migration projects moving critical payment and webhook pipelines to cloud-native architectures, demonstrating both technical depth and operational ownership. Comfortable as a tech lead and embedded developer, he bridges the gap between low-level firmware and large distributed services. Based in Ichikawa, Japan, he pairs research-rooted knowledge of memory and OS from AIST with product-focused engineering that serves millions of users.
16 years of coding experience
8 years of employment as a software developer
Master of Engineering, Computer Science, Master of Engineering, Computer Science at University of Tsukuba
Japanese, English, Chinese
Github Skills (9)
embedded10
bluetooth-le10
btle10
bluetooth-low-energy10
arduino10
sys10
javascript9
esp328
nrf528
Programming languages (6)
Github contributions (5)
line/line-things-starter
Nov 2018 - Jul 2019
The sample codes for LINE Things Developer Trial
Role in this project:
Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:13 commits, 25 PRs, 12 pushes in 8 months
Contributions summary:Hirotaka primarily contributed to the development of firmware and applications for various embedded devices, including M5Stack, micro:bit, and Puck.js, enabling them to interact with a LINE Things platform. Their work involved implementing Bluetooth Low Energy (BLE) functionality, setting up GATT services, and handling communication between the devices and a LIFF (LINE Front-end Framework) application. The commits show the creation of starter code for several platforms, integrating BLE with the hardware and user interfaces.
line-things
techno/line-things-dev-board
May 2019 - Jul 2019
LINE Things development board - Sample codes and schematics
Contributions:26 commits, 22 pushes, 5 branches in 2 months
schematicsiotboardline-things
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