C:\nathan\portfolio\home.md
STATUS: Seeking 2026 New Grad & Full-Time Roles

hi! i'm nathan 👋

i just graduated at uc berkeley (go bears!) studying computer science & data science. my academic interests lie in machine learning and data engineering pipelines.

currently, i'm focused on scalable cloud-native architectures, designing event-driven data systems, and actively looking for new grad and full-time opportunities. beyond writing code, i'm an avid photographer capturing urban structures and natural landscapes.

in my free time, i like to go sidequesting with my camera, hit the gym to clear my head, or travel the world.

last updated on aug 19, 2026. built with love.
Nathan Liu Profile Picture

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to be continued...
Actively interviewing for Data Engineering & SWE roles.

Data Engineer Intern

May 2025 - Aug. 2025
Carbon Sustain • Berkeley, CA
  • Engineered a real-time LLM anomaly detection pipeline that processed 100k events, enforced schema‑validated JSON, and logged full traces to S3 for replayability, enabling faster incident investigation.
  • Enhanced system reliability by implementing DynamoDB idempotency keys to handle retry spikes and configuring CloudWatch alarms, cutting real-time execution failures by 50%
  • Cut dashboard data retrieval time by 80% by rewriting high-cost joins, adding composite indexes, and implementing cursor pagination.

Software Engineer

Jan 2025 - Aug. 2025
UnifIBD • Remote (San Jose, CA)
  • Architected a mobile CI/CD pipeline using Fastlane and GitHub Actions, automating deployments to TestFlight/Google Play to cut release times from hours to minutes
  • Accelerated time-to-production for data features by 50% by standardizing integration workflows and documentation between analytics and engineering teams.
  • Led a three-person engineering team in migrating a Swift iOS app to Flutter and establishing architectural direction, technical milestones, and reduced maintenance effort.

Data Science Intern

Jun. 2024 - Aug. 2024
L.A. Lucky Import & Export Inc. • Los Angeles, CA
  • Reconstructed a real-time SAP inventory sync for 4,000+ SKUs using incremental pulls and upserts into PostgreSQL which reduced manual entry by 100% and enabled automated invoicing for all customers.
  • Overhauled a legacy platform (Django REST, JWT, React) and improved performance by 75% by reducing payload size and adding server-side caching.
  • Built a Docker-based CI/CD workflow to deploy ETL/ELT jobs automatically, streamlining legacy database migration and improving pipeline reliability.

Shift Manager

Sep. 2021 - Jun. 2024
Happy Lemon • Danville, CA
  • Directed a team of 15+ staff members by managing end-to-end scheduling, hiring, and onboarding, fostering a collaborative and high-performing environment in a fast-paced setting.
  • Evaluated and optimized front and back-of-house workflows to eliminate operational bottlenecks, directly improving service speed and team efficiency during peak volume hours.
  • Spearheaded daily operations over a three-year tenure, serving as the primary escalation point for resolving complex customer concerns and enforcing consistent quality standards.

Live Semantic Market

Active (2026)

An event-driven data pipeline that uses zero-shot extraction, vector search, and clustering to process financial news into deduplicated market intelligence.

JavaScript Python Fast APIs React

Clickbait Classifier

Completed (2026)

Fine-tuned a BERT-based classifier on 18K social-news titles; achieved 0.89 F1 and 91% accuracy on a held-out test set, outperforming a TF-IDF logistic regression baseline by +0.14 F1 points.

Python PyTorch Pandas

Flow

Completed (2026)

Unified full-stack email and calendar mobile app utilizing AI sorting, multi-account syncing, and metadata indexing.

React Native Node.js MongoDB AWS Gemini

ItineraryAI

Completed (2026)

Built a chat-based travel concierge that generates structured itineraries from a single prompt and shipped a web dashboard for trip planning (budgets, maps, calendar sync).

Python LangChain FastAPI JavaScript

The IBD Digest

Completed (2025)

Built an offline-first IBD companion app for 5,000+ users (recipes, ingredient libraries, SIBDQ assessment) with persistent onboarding and local state persistence.

Flutter Dart Provider

Spotify Analytics

Completed (2025)

Personal listening telemetry dashboard showing profile insights, favorite genres, and user recommendations.

Python Flask Spotify API Pandas

SimplyMail

Completed (2024)

Modern web Gmail client focused on high performance, clean visual interfaces, and secure Gmail API integrations.

JavaScript Firebase Gmail API

Pokédex API

Completed (2024)

Fast cached Express middleware client providing interactive Pokemon lookups and type analytics.

TypeScript Express PokeAPI

University of California, Berkeley

Class of 2026
Bachelor of Arts in Computer Science & Data Science (Applied Math)

GPA: 3.75

Focus: Data Engineering & Machine Learning.

Computer Science

CS 161 CS 162 CS 168 CS 170 CS 186 CS 188 CS 189 CS 198

Data Science

DATA 8 DATA 100 DATA C101 DATA C104 DATA 140 DATA 144

Engineering & Analytics

EECS 127 INFO 159 IEOR 162

Physics

PHYSICS 7A PHYSICS 7B PHYSICS 7C
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System Status: Open to Work
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