Principal Software Architect: Large-Scale Systems

Eccalon, LLC; Detroit (MI); On-site; USD 140,000 - 190,000; Full time

Job summary

Eccalon, LLC is seeking a Principal Software Engineer to provide technical leadership across complex, large‑scale software systems. This role drives architecture, sets technical strategy, and resolves the organization’s toughest engineering challenges with autonomy and collaboration with product, engineering leadership, and business partners.

You will shape system design, guide modernization efforts, mentor engineers, and ensure scalable, reliable solutions aligned with long‑term company goals.

Qualifications

• Bachelor’s degree in Computer Science, Engineering, or related field or equivalent experience.
• 8+ years of professional software engineering experience.
• Deep understanding of system design, distributed systems, and software architecture.
• Experience leading technical initiatives across teams.
• Expertise with APIs, microservices, messaging, and data‑intensive systems.
• Experience with cloud platforms (AWS, Azure, or GCP).
• Strong understanding of CI/CD, observability, reliability, and security practices.
• Background in performance optimization and scalability planning.

Responsibilities

• Define and evolve system architectures across multiple teams or domains.
• Lead design of large‑scale, distributed, and mission‑critical systems.
• Establish and enforce technical standards, best practices, and design principles.
• Drive long‑term technical vision and architectural consistency.
• Tackle the most complex technical challenges across the organization.
• Evaluate trade‑offs across performance, reliability, scalability, security, and cost.
• Lead root‑cause analysis of major system issues and outages.
• Guide modernization and refactoring of legacy systems.
• Influence technical direction across multiple teams and initiatives.
• Partner with product and leadership on roadmap feasibility and system constraints.
• Act as a technical advisor to senior engineers, managers, and executives.
• Review and guide high‑risk or high‑impact technical decisions.
• Mentor senior and mid‑level engineers.
• Elevate engineering quality through design reviews and code reviews.
• Share knowledge through documentation, talks, and technical forums.
• Model a culture of ownership, quality, and technical rigor.

Skills

Distributed systems

APIs

Microservices

Leadership

Architecture

Education

Bachelor’s degree in Computer Science, Engineering, or related field

Tools

AWS

Azure

GCP

CI/CD

Job description

Eccalon, LLC is seeking a Principal Software Engineer to provide technical leadership across complex, large‑scale software systems. This role drives architecture, sets technical strategy, and resolves the organization’s toughest engineering challenges with autonomy and collaboration with product, engineering leadership, and business partners.

You will shape system design, guide modernization efforts, mentor engineers, and ensure scalable, reliable solutions aligned with long‑term company goals.