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Ryan Zernach 🧬

Senior AI Systems Engineer

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HIGHLIGHTS

  • Distributed systems engineer with 10+ years across payments, AI systems, mobile platforms, MLOps, and cloud infrastructure
  • Built and launched CellarChat™, an LLM-powered agent serving 1M+ users with production-grade evaluation pipelines
  • Architect scalable backend systems powering AI-driven VoIP and eCommerce automation workflows
  • Increased app rating to 4.9★ (10k+ reviews) and drove 25%+ revenue growth via subscription infrastructure
  • Consistently ship products that generate organic daily user acquisition
  • Ranked Top 10 of 10,000+ teams globally in NASA Space Apps Hackathon (AI Voice Assistant)

TECH STACK

Category Technologies
AI / LLM Systems LLMOps, RAG, MCP, Agents, Evaluations, LangChain, Semantic Kernel, OpenAPI, GenAI
Machine Learning Python, PyTorch, TensorFlow, PySpark, ETL Pipelines, Computer Vision
Cloud & Infrastructure AWS, Azure, GCP, Cloudflare, Terraform, Kubernetes, Docker, DevOps
Backend & Systems FastAPI, Node.js, Express, Rust, .NET, C#, Go, Java, Ruby
Realtime & Distributed Systems WebSockets, RabbitMQ, Redis, Queues, WebRTC
Frontend & Mobile React Native, iOS, Android, Swift, Kotlin, Expo
Web Development TypeScript, React, Redux, Next.js, Streamlit
Data & Storage Vector Databases, SQL, NoSQL, GraphQL
Security & Identity OAuth, AuthN, AuthZ, Identity Systems
Payments & Monetization Apple Pay, Subscriptions, Stripe, IAP, Webhooks
Messaging & Communication IMAP, SMTP, SMS, Twilio, Push Notifications
Observability & Tooling Git, Bash, Cursor, Claude, Orchestration, Analytics, Admin Dashboards
Blockchain Ethereum, Solana, dApps, Wallets
Growth & Marketing Systems SEO, Marketing Automation, Campaign Attribution

EXPERIENCE

AI Engineer (Full-Stack)

CellarTracker • Remote (Seattle) Aug 2023 – Jul 2025

  • Built CellarChat™, an LLM-powered chatbot used by 1M+ active users across mobile and web
  • Architected tool-calling pipelines, fine-tuning systems, LLM evaluations, and observability infrastructure
  • Delivered ML-powered recommendation systems on the largest global wine dataset
  • Owned Azure infrastructure and CI/CD pipelines enabling distributed team velocity
  • Increased app rating to 4.9★ with 10,000+ reviews across iOS and Android
  • Implemented Apple Pay subscriptions, driving 25%+ recurring revenue growth
  • Reduced UX friction in cellar workflows through high-leverage product improvements
  • Built features including OCR search, barcode scanning, activity feeds, and support tooling
  • Refactored Redux architecture for scalable and persistent state management
  • Rebuilt analytics pipelines to capture high-signal product and behavioral insights

Mobile Engineer (Full-Stack)

Archlife Industries Software • Remote (Miami) Sept 2021 – Aug 2023

  • Built a trading platform (stocks and crypto) with secure financial integrations
  • Developed admin dashboards for real-time system observability and performance monitoring
  • Delivered core features including portfolio replication, investor discovery, and recommendations
  • Designed and launched social platform features including chat, profiles, and engagement systems
  • Built data visualization systems for asset performance comparison
  • Improved retention via messaging systems, notifications, and calendar integrations
  • Reduced crashes and improved p95 performance using Crashlytics-driven optimization
  • Migrated large-scale React Native codebase from JavaScript to TypeScript
  • Optimized backend interactions to reduce latency and database load
  • Delivered production UI aligned with Figma design systems
  • Resolved complex Bluetooth and map performance issues in telecom applications

Data Science & Machine Learning Tutor

edX (Vanderbilt, UC Berkeley, +24 Universities) July 2020 – Sept 2021

  • Taught 900+ students across Python, ML, and full-stack engineering
  • Maintained 30+ weekly 1:1 sessions, delivering consistent high-quality instruction
  • Supported curriculum used by top-tier universities in technical programs

React Web Developer (Full-Stack)

Georgia Hybrid Landscaping • Atlanta, GA Oct 2015 – Jan 2019

  • Built systems for media uploads, surveys, and automated proposal generation
  • Migrated legacy PHP systems to modern React architecture
  • Generated $500K+ revenue through digital product and marketing systems
  • Built automated email campaign systems using IMAP workflows
  • Developed observability dashboards for analytics, APIs, and databases

EDUCATION

Computer Science & Mathematics Georgia Southern University • Statesboro, GA 2011 – 2012

  • Visual Basic, Calculus, C, C++, R, Statistics, Data Structures, Programming Principles, Linear Regression

Turfgrass Management University of Georgia • Athens, GA 2013 – 2015

  • Design Principles, Science of Grass, Outdoor Business Management, Landscape Architecture

Data Science & Machine Learning Bootcamp Lambda School (Y Combinator) • Remote 2019 – 2020

  • Recommendation Engines, Computer Vision (CV) Models, Time-Series Forecasting, Natural-Language Processing
  • Python, SciKit-Learn, PySpark, Data Engineering, PostgreSQL Databases, Back-End APIs (Flask / FastAPI)

AI Engineering Fellowship (G3) Gauntlet AI • Remote (Austin, TX) Fall 2025

  • Mastered how to command agents, automate workflows, and 100x enterprise-grade software engineering
  • Harnessed the power of RAG, multi-agent systems, OpenAPI, and MCP to build agentic automations

CERTIFICATIONS

  • 2025: Gauntlet AI Engineering Fellowship (G3)
  • 2024: NASA Space Apps Hackathon Finalist (Top 10 / 10,000+)
  • 2022: Ethereum Blockchain Developer
  • 2020: TensorFlow Computer Vision
  • 2020: AutoML Pipelines (DataRobot)
  • 2019: Google Cloud Platform Developer
  • 2019: AWS Microservices Practitioner
  • 2019: Y Combinator Startup School

Thank you for reviewing my resume! Ready to interview me? Let's chat.