Masaru Hasegawa
Software Engineer at LEARNSWELL
Chiyoda, Japan
Summary
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RockstarMasaru Hasegawa is a seasoned software engineer with 11 years of professional experience, currently building products at LEARNSWELL in Chiyoda, Japan. His career includes long-term senior engineering roles at cXense and earlier work at Elastic and Fast Search & Transfer, reflecting deep experience in search, analytics, and production support. He brings a strong track record of moving between hands-on implementation and customer-facing technical support, which helps him balance robust engineering with practical reliability. Colleagues can expect steady delivery and institutional knowledge from his multi-year tenures, plus a propensity for solving thorny production issues. Though his public GitHub activity is not listed, his sustained roles at search- and analytics-focused companies suggest expertise in scalable data systems and search infrastructure.
11 years of coding experience
14 years of employment as a software developer
Github Skills (33)
search-engine10
opensearch10
transport10
kibana10
java10
restful10
logstash10
elasticsearch10
logging10
elastic10
x1210
visualizations10
jruby10
streaming10
observability9
Programming languages (6)
Github contributions (5)
masaruh/elasticsearch
Feb 2015 - Dec 2017
Contributions:100 pushes, 27 branches, 5 comments in 2 years 10 months
restfulsearch-enginedatabaseelasticsearchjava
masaruh/elasticsearch-japanese-suggester
Jul 2015 - May 2017
Contributions:13 releases, 114 commits, 124 PRs in 1 year 11 months
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