John Yapan
Lead Software Engineer at Allstate
Charlotte, North Carolina, United States
Summary
👤
Senior🎓
Top SchoolJohn Yapan is a Lead Software Engineer with 13+ years of experience building cloud-native, enterprise-grade microservices and integration platforms. He specializes in Java and Spring Boot ecosystems, durable data ingestion from REST, streaming, object storage and SFTP sources, and operationalizing solutions with Kafka, Kubernetes, and cloud object stores. At Allstate he built configurable, low-code dataset integrations used across data science teams, accelerating time-to-data for analytics while maintaining security and performance. Past roles at Lowe’s and consulting engagements reflect deep experience in high-throughput inventory and vendor integrations across heterogeneous databases and caches. An active contributor to open-source (notably improving OkHttp transport and NTLM support for the ksoap2-android project), he blends hands-on engineering with a methodical, efficiency-driven approach. Based in Charlotte, NC, he pairs strong academic foundations with a knack for turning complex integration challenges into repeatable, maintainable services.
12 years of coding experience
10 years of employment as a software developer
Master's degree, Engineering Management, 3.21 / 4, Master's degree, Engineering Management, 3.21 / 4 at Sakarya UniversityBachelor's degree, Computer Systems and Technologies, 3.90 / 4, Bachelor's degree, Computer Systems and Technologies, 3.90 / 4 at Technical University of Varna
English, Turkish
Github Skills (8)
javas10
user-authentication10
authentication10
okhttp10
java10
soap10
android9
xml9
Programming languages (5)
Github contributions (5)
simpligility/ksoap2-android
Mar 2018 - Mar 2018
ksoap2-android - SOAP support for Android
Role in this project:
Back-end Developer
Back-end DeveloperContributions:15 commits, 4 PRs, 7 comments in 4 days
Contributions summary:John primarily focused on adding and improving the OkHttp transport module for the ksoap2-android library, enabling SOAP support using OkHttp. They added a new module and implemented core features. The user also fixed bugs, updated the code style, and added documentation. Key contributions include NTLM authentication improvements and adjustments to handle SOAP faults.
javaandroidsoap
canyapan/spring-webflux-sample
Aug 2020 - Jul 2021
Contributions:8 pushes, 1 branch in 10 months
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