Software Engineer | TMRW Health
Apr 2025 - Present- Joined as engineer #2; co-led the rebuild from a nascent Ruby on Rails codebase to a full-stack TypeScript platform, taking the product from 0 to production in ~8 months and now serving hundreds of paying members.
- Architected cloud infrastructure from scratch on AWS and Vercel, and built the entire client-facing web app including the full member onboarding flow.
- Designed and implemented the platform to be HIPAA-compliant end-to-end: secure coding practices and infrastructure for handling sensitive PHI/PII.
- Integrated Claude into engineering workflows and authored an internal skills/standards plugin repository that standardizes cloud capabilities across the team; drove rapid experimentation with modern AI tooling.
- Leading ISO 27001 certification for the organisation; mentor newer engineers through code review and collaborate closely with product and design.
Contract Software Engineer | moondog studios
Nov 2024 - Apr 2025Harmony Intelligence, Sydney
Executed comprehensive testing of frontier AI models in simulated environments to evaluate performance on complex multi-step tasks involving web navigation, cryptocurrency handling and server deployments, among other goal-oriented tasks.
Indie World, New York
-Engineered a versatile web metadata extraction system capable of processing any website.
-Transformed the client's iOS app from a slow-to-iterate-on low-code based solution into a robust React Native application with dedicated backend, enhanced capabilities, AI-powered content insights, and comprehensive user analytics through PostHog.
-Successfully guided the product through App Store deployment, delivering a completely revitalized user experience.
Built a chat-with-website feature for Bloom Tutor-GPT that cleanly scrapes the content of any provided URL, loads it into the LLMs context window and starts a conversation. Built with typescript on next.js, python backend, utilizing jina.ai SDK for scraping and text normalization.
Software Developer | Fractal Tech NYC
Aug 2024 - Dec 2024Built and deployed 20+ full-stack apps, 1000+ commits and 300+ PRs with >860 hours hands on keys
Designed and built full-stack applications including AI voice companions, e-commerce platforms, mobile apps, and social media platforms. Projects utilized modern tech stacks including React, Next.js, React Native, TypeScript, Python, PostgreSQL, Prisma, and various authentication and cloud services (AWS, Firebase, Clerk).
View my portfolio at mahlen.devfor detailed project showcases and demos.
Technical Business Analyst | Commonwealth Bank of Australia
Aug 2020 – Jun 2023- Led FinOps transformation achieving $20M savings across backup and storage portfolio.
- Acting Product Owner leading a team to deliver a compliance reporting modernization project.
- Improved critical infrastructure compliance from 25% to 98% through systematic remediation.
Business Analyst | Macquarie Group
Dec 2016 – Aug 2020- Insourced global voice services from AT&T, reducing costs by $5M
- Managed the delivery of projects that aligned the service with various global regulatory requirements.
- Led requirements gathering for call manager refresh and cloud trading platform implementations
Master of Commerce (Business Information Systems) |
The University of Sydney
Bachelor of Science (Neuroscience) |
The University of Sydney