Hi, I'm Mason Britsch
Senior Software Engineer building HIPAA-compliant healthcare integration software. Three years shipping integrations against 21 EHR systems for 500+ providers, processing 100,000+ patient records daily. Stack is TypeScript, React, Node.js, and C#.
About Me
I've always noticed gaps in systems: places where manual work, broken handoffs, or missing visibility cost people time. I transitioned from consulting to engineering because the highest-leverage way to fix broken processes was to build the software myself.
At Aloha, I work on the multi-tenant sync platform behind 500+ healthcare providers and 21 EHR systems. The legacy databases include SQL Server, MySQL, SQLite, FoxPro, and Advantage, and the platform processes 100,000+ patient records a day. The interesting problems are about shipping reliably against surfaces I don't control: vendor UI drift, undocumented APIs, schema inconsistencies, and per-tenant failure isolation.
Before engineering, I spent four years doing bookkeeping and SOP design for a dozen small businesses, plus end-user IT support. That's where I learned to look for the seams between business systems and software, the places where the model the software has of the business doesn't match the business itself. That mismatch is most of where integration work actually happens, and it's the work I want to keep doing.
Professional Experience
Senior Software Engineer
5th engineer hired at healthcare integration startup; engineering team scaled to 25. Architectural ownership across the multi-tenant sync platform.
- Own architecture for the multi-tenant sync platform keeping 21 EHR systems in parity with downstream services for 500+ providers; designed tenant isolation so one vendor outage cannot stall other tenants
- Built and own internal diagnostic tooling that reduces support's incident-investigation burden: a desktop application that audits client PC configuration on demand (antivirus state, Event Viewer logs, resource availability), plus a watchdog service in active development that monitors the primary application and surfaces deeper diagnostics automatically
- Built and maintain the team's AI-augmented development infrastructure: custom Claude Code agents and hooks for ticket investigation, AI scoping with human confirmation, and structural scaffolding. Guardrails keep generated output inside existing architecture, with automated blast-radius testing on affected paths. Cycle time on feature requests and bug fixes dropped from 5-8 days to 1-2, including tests
- Set the team's TypeScript, DDD, and Clean Architecture conventions; lead design review on every new integration before implementation
Software Engineer II
Led the architectural redesign and authored the integration runtime cloud EHR connectors are built on.
- Led architectural redesign from legacy C# to TypeScript/Electron using DDD and Clean Architecture, enabling cross-platform deployment and replacing the tangled data-flow patterns that produced the bulk of legacy defects
- Authored the multi-tenant integration runtime that all cloud EHR connectors are built on: repository-pattern dispatch to EHR-specific implementations, per-tenant credential isolation, change detection for vendor UI drift, idempotent retries, and observable run state. Replaced a manual recurring-CSV-upload onboarding process with automated sync, eliminating the per-tenant operational burden on customer success
- Established the team's testing practice (Vitest, integration harnesses against real databases) and drove coverage to 80%; trained the support team on the resulting debugging workflows
Reverse-engineered an undocumented vendor API from network traffic to ship the team's first cloud integration
Software Engineer
Engineered ETL pipelines and database connectors for healthcare data integration.
- Inherited and refined ETL pipelines across 21 EHR schemas (including FoxPro and Advantage Database) processing 100,000+ patient records daily; handled schema drift and vendor-side data inconsistencies without breaking downstream consumers
- Built a Dapper-based data-access layer bridging legacy systems (FoxPro, Advantage) into the modern C#/.NET architecture
- Introduced the team's first automated testing practice with unit and integration test suites
Skills & Technologies
Languages
Frontend
Backend
Databases
Architecture
Automation & Integration
AI-Augmented Development
Observability & DevOps
Security & Compliance
Domain Expertise
Education
Coding Dojo
Immersive Full-Stack Training Program in Python, C#, SQL, HTML, CSS, JavaScript, and MERN
Northwest University
Graduated Cum Laude
Excellence in event orchestration and public speaking
Let's Connect
I believe the best software engineers understand people and process, not just code. I'm looking for senior engineering roles at the seams between business systems and software: integration platforms, healthcare and finance domains, or places where the model the software has doesn't match the business it's supposed to represent. Currently in Peoria, IL; open to remote, or hybrid with relocation.