Liam Rosen

Software Engineer

mail@liamrosen.xyz https://liamrosen.xyz

Experience

Dialogue Health Technologies

July 2022 - Present

Senior Software Engineer - Platform

Engagement System - System for managing communications with patients and providers.

Rearchitected a large legacy system to improve development and operational velocity.
Led the team through the successful technical and operational migration.
Mentored junior engineers, fostering ownership and system expertise across the team.

Database Optimization - Query optimization to accommodate a large influx of users.

Diagnosed causes of high latency in mission-critical services under heavy load.
Developed a validation framework for benchmarking experimental optimizations.
Executed incremental zero-downtime rollouts of schema and query changes.
Delivered department-wide presentations on optimization strategy and guidance.

Transitional Forms

November 2020 - July 2022

Principal Software Engineer

RobotsMakeTV - Experimental media combining human direction, machine improvisation, and audience interaction.

Designed tools for creators to produce narratives powered by machine intelligence.
Facilitated a unique weekly show with guest directors.

Asset Graph - Asset search engine for training Generative ML models.

Indexed over 10 years of production assets for the Crash Course YouTube channel.
Worked directly with the client to iteratively design and validate the solution.

AI Music Blocks - No-code tool for creating generative music arrangements.

Created a block-based interface to enable experimentation with ML-driven composition.
Worked with accomplished artists to align creative expression within technical constraints.

Fanxchange / Vivid Seats

April 2016 - April 2020

Senior Software Engineer

Venue Maps - Interactive seat maps for live venues.

Protoyped and launched an end-to-end solution for industry-leading venue maps.
Solution attracted Vivid Seats' interest, resulting in an acquisition.
Led the migration of the system to Vivid Seats' platform.
Optimized content authoring tools to help scale to over 30k venues.
Conducted migration of venue data from three large data acquisitions.

Live Event Marketplace - Marketplace for live events across North-America.

Collaborated with designers to rebuild an e-commerce platform from scratch.
Improved customer experience through A/B testing, user interviews, and usage analytics.
Developed a VR "View from Your Seat" feature for mobile shoppers.

Technical Skills

Languages:
- TypeScript
- Python
- C#
- Java
- Go
- HTML
- CSS
Web:
- Vue
- React
- NodeJS
- Electron
- Django
- Protocol Buffers
- gRPC
- GraphQL
Data & ML:
- PostgreSQL
- MongoDB
- Snowflake
- Neo4j
- Redis
- RabbitMQ
- Tensorflow
- PyTorch
Graphics:
- Unity
- Godot
- ThreeJS
- WebGL
- GLSL
Infrastructure:
- AWS
- GCP
- Docker
- Kubernetes
- Terraform
- CircleCI
- GitHub Actions
- Jenkins