Principal Software Engineer, EMR Platform

About the Role

As a Senior Software Engineer, you will own complete features across our product portfolio

— from API design through application delivery. You will contribute to event-driven

services, real-time systems, and cloud-based healthcare applications. You are expected to

bring strong technical judgment to ambiguous problems, mentor less experienced

engineers, and actively shape team quality standards.

What You’ll Do

• Architect and build production-grade REST APIs with full OpenAPI spec coverage

• Design and own domain-driven services aligned to clinical workflows

• Write comprehensive test suites — unit, integration, and contract tests — and hold

the team to that standard in code review

• Build and maintain features across desktop and web-based healthcare applications,

including real-time capabilities

• Integrate with cloud services and event-driven workflows

• Own CI/CD pipeline configuration and improvements

• Collaborate with security and platform teams on authentication and secrets

management

• Instrument services for observability using structured logging and APM tooling

• Mentor Software Engineer I and II team members through code review and pairing

What We’re Looking For

Required

• Experience: 5+ years of professional software development experience

• C# — advanced patterns including async/await, dependency injection

(Microsoft.Extensions.DI), SOLID principles; .NET Core for APIs and .NET

Framework for desktop

• ASP.NET Core Web API — production API development including middleware,

routing, model binding, API versioning, and OpenAPI documentation

• WPF / XAML / MVVM — multi-threaded UI patterns, Dispatcher, async/await on

the UI thread, DevExpress MVVM framework

• LLBLGen Pro ORM — entity generation, query building, schema-first data access

patterns

• TypeScript / Node.js / Express / TSOA — advanced patterns including decorators,

DI (TypeDI, reflect-metadata), and auto-generated OpenAPI specs

• SQL Server — complex query design, stored procedures, index optimization

• Real-time messaging — SignalR client-side integration, Apache ActiveMQ / Apache

NMS, event-driven patterns• AWS — S3, Lambda, Secrets Manager; practical working knowledge of MSK/Kafka

event streaming

• Authentication — JWT bearer auth, OAuth2/OIDC, Okta integration, token lifecycle

management

• Polly resilience policies — retry, circuit-breaker, and timeout patterns for external

integrations

• Testing — NUnit + Moq (C#); Jest, Supertest, Cypress (TypeScript); contract testing

against OpenAPI specs

• CI/CD — CircleCI or equivalent; pipeline authoring, environment promotion

strategies

• Structured logging and observability — NLog, Sentry, Datadog APM

• Security fundamentals — OWASP Top 10, input validation, parameterized queries,

secrets hygiene

Nice to Have

• VB.NET reading ability — legacy PVSC_Win components remain in production

• Python — ability to contribute to AI infrastructure (FastAPI, Pydantic, AWS

Lambda)

• LaunchDarkly — server-side SDK integration, flag lifecycle management

• React / Next.js — SSR, App Router, session management with NextAuth.js

• Serverless Framework — serverless.yml authoring and deployment

• Socket.io / real-time web systems — bidirectional event handling, connection

lifecycle

• Healthcare SaaS — familiarity with PHI handling, audit logging, or HIPAA-adjacent

compliance

Our Stack

Cloud Platform & APIs

Layer Technologies

Language TypeScript, Node.js, Python

API Framework Express, TSOA, FastAPI

Frontend Next.js, React, SCSS

Database SQL Server (mssql)

Messaging Kafka / AWS MSK (kafkajs)

Real-time Socket.io, LiveKit

AWS Lambda, S3, Secrets Manager, EventBridge, MSK, Bedrock

Testing Jest, Supertest, Cypress, contract tests

CI/CD CircleCI, GitHub Actions

API Contracts OpenAPI / SwaggerHub / OpenAPI Enforcer

Auth JWT, NextAuth.js, Okta, jsonwebtoken

Layer 

Technologies

Observability 

Datadog (APM, RUM, logs)

Feature Flags 

LaunchDarkly

DI 

TypeDI, reflect-metadata

Desktop EMR (VelociDoc)

Layer 

Technologies

Language 

C# (.NET Core + .NET Framework), VB.NET (legacy)

UI Framework 

WPF / XAML, DevExpress (MVVM)

API Framework 

ASP.NET Core Web API

ORM 

LLBLGen Pro (SD.LLBLGen.Pro)

Database 

SQL Server, SQL Server CE

Testing 

NUnit, Moq

Messaging 

SignalR, Apache ActiveMQ (NMS)

Resilience 

Polly

Auth 

OAuth2 / OIDC, Okta, IdentityModel.OidcClient

Observability 

NLog, Sentry

Deployment Advanced Installer

What Success Looks Like

Within 30 days you are shipping features independently across both stacks and actively

participating in code review. Within 90 days you own one or more service domains or

desktop feature areas and are contributing to architectural discussions. Within 6 months

you are a technical reference point for your team and are actively raising quality standards

through tooling, testing, and mentorship.

Equal Opportunity Employer
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