Kerlyn Angel Difo

kerlyn angel difo

Learning to build systems and create meaningful projects

Currently at Datadog

Previously at Capital One & Columbia

Projects

A collection of projects I've worked on, from distributed systems to full-stack apps.

URL Monitor

URL Monitor

Distributed URL monitoring system with real-time health checks, custom alerting, and comprehensive Datadog Agent integration for metrics, logs, and distributed tracing.

  • Implemented telemetry pipeline with StatsD metrics for latency/error rates, structured file-based logging with automatic ingestion, and dd-trace-go for request-level tracing
  • Containerized with Docker and orchestrated multi-container deployment via Docker Compose and Kubernetes (Minikube)
  • Deployed React/TypeScript frontend on Vercel and Go backend on Fly.io
GoDistributed SystemsDatadogObservability
Discord Job Tracker Bot

Discord Job Tracker Bot

Discord bot that tracks job applications and provides status updates.

  • Built a REST API using Flask and SQLite to store job application data
  • Implemented a Discord bot using Discord.py that allows users to track their job applications
  • Integrated options like update, export, list by company, and list by status
PythonDiscord.pySQLiteAPI
CUNY to Calendar

CUNY to Calendar

Chrome extension letting CUNY students export class schedules directly to Google Calendar.

  • Built a chrome extension that allows CUNY students to easily add their classes to their Google Calendar
  • Used ICS library to parse the class schedule
  • Integrated custom API to scrape the class schedule
TypeScriptChrome ExtensionWeb Scraping
MultiOmic Phenotypic Data Search

MultiOmic Phenotypic Data Search

ETL pipeline querying PubMed & dbGaP with advanced visualization for biomedical researchers.

  • Unifies study, sample, and assay records from PubMed, GEO, ENA, dbGaP, and BioStudies into a single searchable schema
  • Orchestrated an asynchronous ingestion layer (aiohttp + asyncio) and vectorized clustering logic, shrinking metadata harvest time from 60 min to < 8 min
  • Built a fault-tolerant ETL pipeline on AWS (EC2 + S3, IAM-scoped roles, CloudWatch alerts)
PythonETLBiomedicalAWS

Hackathon Winners

RefuConnect

RefuConnect

HopHacks 2024 Winner: Bloomberg Track

Real-time multilingual platform connecting refugees with resources. 2nd place at HopHacks.

  • Implemented real-time chat feature with WebSockets for instant communication
  • Integrated Google Translate API for automatic message translation
  • Built responsive React front-end with intuitive user interface
ReactNode.jsWebSocketsMongoDB
Code Whisperer

Code Whisperer

HackKnight 2025 Winner: Best Software

VSCode extension using Faster-Whisper for real-time code transcription with instant feedback.

  • Implemented a VSCode extension that uses OpenAI's API to type code for you
  • Integrated Faster-Whisper for real-time transcription of code
  • Added features like switching between lines, adjusting already typed code
PythonTypeScriptVSCode APIFaster-Whisper