Principal Software Engineer

Labelmaster•Chicago, IL

14h•Hybrid

About The Position

Labelmaster is an established and growing company that takes the complexity out of shipping Dangerous Goods (Hazmat), making the world a safer place. We’re seeking people who: Don’t want to work for typical corporate employers Want to contribute to making the world a safer place (no, really) Have a life outside of work Position Purpose We're seeking a Principal Software Engineer for DGIS, our SaaS platform supporting shipping processes for companies of all sizes. This role focuses heavily on architecture design, ensuring architectural compliance across teams, and performing code reviews to maintain code quality standards.

Requirements

7-10 years of software development experience with architectural planning, design patterns, and cross-team technical leadership.
Strong object-oriented programming (C#)
Relational database design and optimization (SQL Server)
RESTful API design and development understanding of authentication/authorization patterns (JWT, OAuth)
Familiarity with GraphQL
Modern JavaScript framework experience (ReactJS/SolidJS preferred, or Vue, Angular, etc.)
Component-based architecture understanding
State management patterns
Cloud platform experience (Azure preferred, AWS/GCP acceptable)
CI/CD concepts and practices
Azure DevOps (or similar: GitHub, GitLab, Jenkins)
Experience with or strong interest in using AI coding assistants (Claude Code, Copilot, Cursor, etc.)
Ability to effectively prompt and collaborate with AI tools
Understanding of when to use AI assistance vs. manual development

Responsibilities

Learn and understand current DGIS architecture and technical ecosystem
Design integration solutions between DGIS and third-party systems
Architect full-stack solutions for new applications and features
Ensure architectural consistency and best practices across development teams
Perform code reviews across multiple development teams
Ensure compliance with architectural standards and coding best practices
Identify technical debt and recommend refactoring strategies
Build new features and applications using AI-assisted development tools (e.g., Claude Code, GitHub Copilot)
Maintain and refactor legacy .NET applications
Implement full-stack solutions from database to UI
Integrate third-party APIs (payment processors, shipping carriers, etc.)
Create technical documentation for API customers
Develop architectural whitepapers and framework documentation
Document integration patterns and best practices
Maintain architectural decision records (ADRs)
Secure coding practices
Data protection principles