Ryan Kontos

Software Engineer, EFN (contracted to CSIRO) — Sydney

Junior Software Engineer & Mobile App Developer

Jun 2024–Present

• Delivered offline-first survey features used by researchers nationwide leveraging IndexedDB & service workers
• Developed and maintained Node.js/Express/Prisma APIs handling ~1M geospatial records in PostgreSQL with sub-second queries
• Integrated Vite & Tailwind CSS for rapid front-end prototyping
• Set up GitHub Actions CI/CD pipelines for automated testing & deployments
• Collaborated with CSIRO scientists in agile ceremonies; shipped MVP two weeks early

How Long Left

iOS, macOS & watchOS App

• Deployed on App Store with 40,000+ downloads
• Built with UIKit, AppKit & WatchKit
• Currently undergoing a major rewrite in SwiftUI

Habits

Personal project (not yet deployed)

• A unique take on habit trackers, focused on statistics & simplicity

TrainTrack

Personal project (not yet deployed)

• Fun app for tracking Sydney trains & carriage journey history
• Parses carriage codes printed inside the trains

Roster → iCal

Shift-roster exporter for employer site

• Reverse-engineered employer's roster site using Node.js & Axios
• Managed cookies/session auth for scraping
• Built AWS Lambda + API Gateway service to generate real-time iCal feeds
• Hosted schedule data on S3

ReedMi

Social-media app (uni project) – Lead backend developer

• Built RESTful APIs with Node.js, Express & MongoDB
• Implemented OAuth 2.0 via Passport.js for secure auth

VivaMQ

AI Viva-question generator (capstone)

• Led backend tech: Express routes, DB CRUD, user management & auth
• Integrated RabbitMQ for async messaging between front-end & AI modules
• Deployed on AWS (S3 storage, Lambda + API Gateway)