Projects

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PTS UI && SERVICE

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DCTR SERVICE CI

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HMBS BRE SERVICE

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RECERTIFICATION SERVICE

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HUD11708 SERVICE

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BATCH JOB

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Challenges

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Virtual thread block the other thread

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1. jps -l # to list java process, find springboot Application.class process 2.0 jcmd 12345 help
2. jcmd 12345 Thread.print

3. jcmd 12345 VM.flags # inspect JVM flags
4. jcmd 12345 GC.heap_info

5. jcmd PID VM.command_line # inspect JVM arguments

Use JFR

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1. jcmd 12345 JFR.start name=debug duration=60s filename=C:\temp\debug.jfr 1.1 jcmd JFR.check 1.2 jcmd JFR.stop name=xxx
2. jmc

BRE performance: stream dao layer for large query, separate query to avoid large CTE, virtual thread

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Production defect: WAF rule

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DB Unique index constraint bug for efficient code

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Drool syntax: && cannot skip second part, comma can skip second part

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Not code related: not coding error, need to push back to not coding error

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jdk25 bugs:

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2. jackson 3, cannot use primitive boolean in payload

sb4 bugs:

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1. queryForObject always throw EmptyResultDataAccessException if set fetchSize globally, we should use for each preparedStatement for each query

improve query performance

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1. reduce the size of CTE (common table expression)
2. landing on index (most of time)
3. improve table join

Experience

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TA

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1. 2022 Spring: Data structure & algorithms by Calvin Lin
2. 2025 Spring: Advances in Deep Learning by Philipp Krahenbuhl
3. 2025 Summer: Advances in Deep Learning by Philipp Krahenbuhl
4. 2025 Fall: Natural Language Processing by Greg Durrett & Jessy Li
5. 2026 Spring: Advances in Generative Modeling by Qiang Liu
6. 2026 Summer: Advances in Generative Modeling by Qiang Liu

Staff SDE

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leading cross-team initiatives, writing design docs others reference, and mentoring might make a lateral Senior move into a more ML-adjacent role at your current level, then grow into ML-infra-specialized Staff over 2-3 years.

Gap explanation 1

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After ~3 years in industry, I left JD.com in 2018 to focus on graduate school applications. I moved to the US in early 2020 and started UT Austin’s MS in CS that fall, where I pivoted from data science toward software engineering — which is what I do at BNY now.

Gap explanation 2

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I graduated from UT Austin in December 2022, right as the big tech layoffs started — Meta, Amazon, and most of the FAANG and adjacent companies were cutting headcount and freezing new-grad hiring through 2023, especially for international candidates. I used the time to get married — we held our ceremony in Japan and spent time with family in China — and kept interviewing and sharpening my skills. I joined BNY in September 2024, was promoted to senior in under a year, and have been the sole engineer on the Ginnie Mae HMBS modernization since. Happy to talk about that work.

Cover Letter

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After completing my UT Austin MS in late 2022, I joined BNY in 2024 to lead the Ginnie Mae HMBS modernization, where I’ve shipped three production systems end-to-end as sole engineer.