Jehandad Kamal
LLM Apps Engineer Mercari at Mercari, Inc.
Tokyo, Japan
Summary
👤
Senior🎓
Top SchoolJehandad Kamal is an LLM Apps Engineer at Mercari with 11 years of experience building scalable backends, cloud architectures, and production LLM applications across startups and large enterprises. He has led teams and shipped high-RPS microservices, re-architected Android apps, and helped drive a company-wide microservice migration and configurable Home page backend. Comfortable across mobile, backend, and ML-infused application layers, he combines hands-on coding with mentoring and process improvements that raised QA and delivery standards at scale. His earlier work includes driving app quality for Rakuten Japan Mall (MAU >3M) and leading AR/ecommerce mobile teams delivering secure payments and novel UX. An active tester and quality contributor in open-source (notably improving swagger-parser’s handling of OpenAPI examples and references), he pairs rigorous engineering with a curiosity for data science and penetration testing. Influenced by classics from Sedgwick and Bloch, he brings a pragmatic, design-minded approach to complex system problems.
11 years of coding experience
12 years of employment as a software developer
HSC Pre Engg, A, HSC Pre Engg, A at DA Degree College for MenBachelor of Engineering (B.E.), Systems Engineering, A, Bachelor of Engineering (B.E.), Systems Engineering, A at NED University of Engineering and TechnologySSC, Computer Science, SSC, Computer Science at Army Public School CODMS(CS), Computer Science, MS(CS), Computer Science at IBA
Stackoverflow
1,898reputation
165kreached
26answers
45questions
Github Skills (15)
unit-testing10
javas10
swagger10
openapi10
java10
test-automation10
android-studio6
nodejs6
orm6
mupdf6
makefile6
android6
retrofit6
okhttp6
sequelizejs6
Programming languages (9)
Github contributions (5)
swagger-api/swagger-parser
Sep 2018 - Oct 2018
Swagger Spec to Java POJOs
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:8 commits, 3 PRs, 9 comments in 23 days
Contributions summary:Jehandad primarily contributed unit tests and made fixes related to parsing and resolving OpenAPI specifications. Their work involved writing tests to verify the correct handling of external and local examples, as well as sub-references within the specification files. These tests were focused on validating the accuracy of the swagger-parser library in parsing and processing OpenAPI definitions, especially concerning examples and references.
openapi-specificationswagger-parserspecrestswagger-spec
JehandadK/jehandadk.github.io
Mar 2016 - Feb 2025
Contributions:10 pushes in 9 years
jekyll-blogjekylljekyll-thememinutes
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