Summary
Overview
Work History
Education
Skills
Timeline
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Jian Sun

San Jose,CA

Summary

Experienced Software Engineer with 8 years in the industry, specializing in high-performance distributed systems and large-scale data ingestion pipelines

Overview

9
9
years of professional experience

Work History

Senior Software Engineer at AI Infrastructure

LinkedIn, Inc.
03.2020 - Current
  • Expedited development of embedded search by designing and launching a new search index release process, doubling deployment frequency (1→2 per week).
  • Re-architected search infrastructure integrating Lucene7 features; reduced query latency 4× (p50) and 12× (p99) while cutting hardware cost 25%.
  • Split monolithic cluster into mini-clusters, saving $5.4 M in hardware.
  • Engineered a nearline data aggregation component, scaled to 10K+ hosts, powering LinkedIn’s flagship Job Search platform.
  • Developed Spark-based data-parity validation tool to migrate index generation from on-prem to Azure.

Software Engineer at Buyside Trading Platform

Bloomberg L.P.
04.2017 - 03.2020
  • Created next-generation portfolio management application from the ground up.
  • Implemented high-performance C++11 pub/sub messaging enabling real-time analytics for traders.
  • Built unified distributed framework with single data entry point and extensible onboarding interface.
  • Developed distributed logger with C++ & Splunk; delivered actionable usage insights.
  • Implemented Audit Trail feature for Bloomberg TAG; full-stack JavaScript micro-services and real-time front-end.

Intern at Mobile Development

RetailMeNot, Inc.
06.2016 - 08.2016
  • Developed brand new mall map feature for RetailMeNot app on iOS which has 4MM monthly active user.
  • Built indoor map displaying in-store-coupons and store locations using UIKit, GoogleMapSDK, CoreData, CoreLocation, AFNetworking, Bolts and other technologies.
  • Created RESTful API endpoint providing data to mobile client using Python, Flask, MongoDB and MySQL.
  • Helped to create a reusable, component based method of building views on the app.

Education

Master of Science - Electrical and Computer Engineering

University of Michigan
Ann Arbor, MI
12.2016

Electrical Engineering - undefined

Purdue University
West Lafayette, IN
05.2014

Skills

  • Programming languages: Java, C, Python, Scala, JavaScript, Go, Swift, SQL, MATLAB, Perl
  • Frameworks & Technologies: Lucene, Spark, Hadoop, Flink, Elastic Search, Spring Boot, REST, gRPC, Kafka, Splunk, Redis, Docker, Jenkins

Timeline

Senior Software Engineer at AI Infrastructure

LinkedIn, Inc.
03.2020 - Current

Software Engineer at Buyside Trading Platform

Bloomberg L.P.
04.2017 - 03.2020

Intern at Mobile Development

RetailMeNot, Inc.
06.2016 - 08.2016

Electrical Engineering - undefined

Purdue University

Master of Science - Electrical and Computer Engineering

University of Michigan

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