Damian Ho. (何旭扬)
New York City
Building distributed systems at Jane Street.Prev @ HRT and Jump Trading.CS @ CMU and Stanford.
01Experience
- Mar 2026 – Present
Jane Street (opens in a new tab)
New York, NYSoftware Engineer
- Building an in-house distributed database for OLAP workloads.
- Built a tool that picks more compact Parquet encodings.
- Re-encoded historical data, reclaiming petabytes of storage.
Skills - Oct – Dec 2025
Stanford University (opens in a new tab)
Stanford, CAGraduate Course Assistant
- Assisted Prof. Keith Winstein with CS 144 (Computer Networking).
- Designed exam questions, held office hours and graded student assignments.
- Automated functionality tests for student code on Gradescope.
Skills - Jun – Aug 2025
Hudson River Trading (opens in a new tab)
New York, NYSoftware Engineer Intern
- Built shared-memory progress tracking for distributed compute jobs.
- Developed and load-tested an asynchronous API service handling 500 req/s.
- Optimized the trace ingestion pipeline, increasing throughput by 2.25×.
Skills - Jun – Aug 2024
Jump Trading (opens in a new tab)
Chicago, ILSoftware Engineer Intern
- Built a batch pipeline processing drop copy data at 1M trades/min for end-of-day reconciliation.
- Unified log processing across internal tools, removing duplicate I/O code.
- Developed CLI tools to control live trading services, such as toggling sessions.
Skills - Mar 2022 – May 2024
Autolab (opens in a new tab)
Pittsburgh, PA- Project LeadMay 2023 – May 2024
- Software DeveloperMar 2022 – May 2023
- Led a CMU team of eight under Profs. David O’Hallaron and Gregory Kesden.
- Migrated the Rails application's deployment to AWS CloudFormation.
- Patched vulnerabilities, including CVE-2022-41955 (opens in a new tab) and CVE-2023-32317 (opens in a new tab).
Skills - May – Aug 2023
DSTA (opens in a new tab)
SingaporeDevSecOps Intern
- Automated web-app deployments behind NGINX with Ansible.
- Installed and upgraded an air-gapped Kubernetes (OKD) cluster.
- Evaluated HashiCorp Vault for managing secrets on the cluster.
Skills - Jun – Aug 2022
GXS Bank (opens in a new tab)
SingaporeSecurity Engineer Intern
- Authored a security standard spanning 220 controls and 38 AWS services.
- Implemented 94 security policies using Prisma Cloud RQL.
- Deployed a GitLab CI/CD pipeline to scan Docker images for vulnerabilities.
- Orchestrated daily fuzzing of 20 development APIs.
Skills - May – Jul 2021
Sembly (opens in a new tab)
SingaporeSoftware Engineer Intern
- Built internal tools for inspecting and tuning a reputation system.
- Unified the backend's graph updates behind a generic interface.
- Wrote tooling to detect and repair corrupt data.
Skills - Feb – Apr 2021
DSTA (opens in a new tab)
SingaporeSoftware Engineer Intern
- Doubled WireGuard VPN throughput to 16 Gbps by spreading traffic across three connections.
- Benchmarked binary, radix and multibit tries for IP routing.
Skills - Jan 2019 – Oct 2020
Singapore Armed Forces
SingaporeAdministrative Specialist
- Oversaw administrative matters for a company of 250 soldiers.
- Awarded the Unit Commanding Officer’s Coin (Oct 2020).
02Education
- Sep 2024 – Dec 2025
Stanford University (opens in a new tab)
Stanford, CAM.S. in Computer ScienceGPA 4.186
Systems Specialization
- Activities
- Stanford ICPC
Degree verification
- CeDiD
26QM-SAO2-DDO4- Name
Da(first two letters)
- Aug 2021 – May 2024
Carnegie Mellon University (opens in a new tab)
Pittsburgh, PAB.S. in Computer ScienceGPA 4.00
Computer Systems Concentration
- Honors
- University HonorsDean’s List with High Honors (all semesters)
Degree verification
- CeDiD
246B-DRWV-DBOL- Name
Da(first two letters)
- 2013 – 2018
Singapore-Cambridge GCE A-LevelsRank points 90/90H3 Distinction
- President of the Infocomm & Robotics Society (2017–2018).
- Built club projects:
- Mobile apps for the school open house (2019) and university fair (2018).
- A countdown timer for the 24-hour static kayaking challenge (2018).
- An Amazing Race website (opens in a new tab) for Science Week (2018 and 2019).
- Subjects
- H1 General Paper and Project WorkH2 Physics, Mathematics, Computing and EconomicsH3 Mathematics
- Awards
- Subject Prizes for Computing and Physics (2017 and 2018)Outstanding Student AwardHwa Chong Diploma (Distinction)DSTA JC Scholarship
- Activities
- Infocomm & Robotics Society, Singapore Scout Association
03Achievements
ICPC profile (opens in a new tab)- Nov 2025
ICPC Pacific Northwest Regional Contest (D1)
6th / 69- 3rd of 6 Stanford teams.
- 4th of 30 teams at the California site.
- Team
- Stanford Boötes
- May 2025
ICPC North America Championship
41st / 52- Honorable mention.
- Attended the North America Programming Camp (NAPC).
- Team
- Stanford Oiler
- Nov 2024
ICPC Pacific Northwest Regional Contest (D1)
5th / 69- 1st of 5 Stanford teams.
- Qualified for the ICPC North America Championship 2025.
- 4th of 31 teams at the California site.
- Team
- Stanford Oiler
- Oct 2023
ICPC NA East Division
26th / 177- One of seven teams representing CMU.
- 7th of 33 teams at the Youngstown site.
- Team
- CMU -2
- Mar 2023
Ready Trader Go
Top 32 / 2,800Optiver
- Applied the Avellaneda–Stoikov model with lagged hedging in low-latency C++.
- Traded ETFs and futures against seven other teams per match on a simulated exchange.
- Feb 2023
ICPC East Central NA Regional Contest
7th / 92- 2nd of 6 CMU teams.
- 2nd of 29 teams at the Youngstown site.
- Team
- Da Ho Li
- Feb 2022
- Oct 2019
I’m the Best Coder! Challenge
1st / 40Shopee
- Top pre-tertiary team.
- Solved two sets of data analytics problems using Python.
- Invited to visit Shopee’s Indonesia headquarters.
- Jun 2018
Cyber Defenders Discovery Camp
4th / 20DSTA
- Attack/defense CTF.
- Jun 2018
- Mar 2018
- 2015 – 2018
Singapore National Olympiad in Informatics
3× Gold- Gold in 2016, 2017 and 2018 (top 8%).
- Silver in 2015 (top 25%).
- Selected three times (2015–2017) to attend NUS CS3233 (opens in a new tab) (Competitive Programming).
- Jan 2017
USA Computing Olympiad
Platinum- Advanced from Bronze to Platinum in a single contest.
- Perfect scores in Bronze (opens in a new tab), Silver (opens in a new tab) and Gold (opens in a new tab).
- Scored 556/1000 in Platinum (opens in a new tab).
- 2014 – 2015
Math and Science Competitions
2× Bronze- Bronze at the Singapore Mathematical Olympiad (Senior) (2015).
- Bronze at the Singapore Junior Physics Olympiad, reaching the special round (2015).
- ICAS Science medal for the top score in Singapore (2014).
04Projects
- Apr – Jun 2025
Pintos Operating System Kernel
- Built all four Pintos (opens in a new tab) projects in C: threads, user programs, virtual memory and a file system.
- Implemented priority scheduling with nested donation, demand paging with clock eviction and a buffer cache.
Skills - Jan – Mar 2025
- Jan – May 2024
C0 Compiler
- Built an optimizing compiler for a safe subset of C targeting x86-64.
- Achieved up to a 2× speedup via tail calls, strength reduction and coalescing.
- Extended the language with variadic functions and function pointers.
- Added register allocation and peephole optimizations.
Skills - Nov – Dec 2023
- 2015 – 2021
Rovers.sg
- Built a custom content management system for Singapore Rover Scouts.
- Implemented a link shortener, event calendar and file management system.
- Presented at the 2015 Singapore Rover Conference (50 attendees).
Skills - 2016 – 2017
Enhanced Ant Colony Optimisation in Networks
- Investigated ant-inspired network routing, improving on AntNet.
- Awarded Merit at the 2017 Singapore Science & Engineering Fair.
- Presented at the 2017 Young Defence Scientist Programme Congress.
Skills
05Service
- Dec 2019 – Mar 2022
NOI Scientific Committee
- Worked in a team of seven to select, prepare and test contest problems.
- Authored four tasks (Crypto, Labels, Progression, Fraud) and prepared a fifth (Fuelstation) for the 2020 and 2021 NOI (200 contestants).
- Answered contestant clarifications on contest day.
- Tested tasks for the 2019 NOI and Day 1 tasks for the 2020 International Olympiad in Informatics (IOI).
- Nov 2015 – Dec 2018
Informatics Olympiad Trainer
- Trained secondary school and junior college students at the school and national levels.