ECommerce Principal Software Engineer

• Event-driven systems
• Azure Functions

Downers Grove, IL (Hybrid)

Full-Time

$140,000 - $180,000 Base + Bonus

NO SPONSORSHIP PROVIDED

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22 is partnering with a leading organization to identify a Principal Software Engineer who will serve as a strategic technical leader responsible for shaping the future of a large-scale eCommerce platform. This role combines hands-on software engineering, enterprise architecture, cloud transformation, AI innovation, and technical leadership.

The ideal candidate brings a strong track record of designing and delivering modern, cloud-native applications while influencing engineering direction across multiple teams.

• Define and drive application and solution architecture across a large-scale eCommerce ecosystem.
• Lead architecture reviews, technical governance, and engineering standards.
• Design and build scalable microservices and modern front-end architectures.
• Drive cloud modernization initiatives utilizing Microsoft Azure technologies.
• Develop and implement AI-powered solutions, agentic workflows, and LLM integrations.
• Establish best practices for software quality, CI/CD, security, observability, and reliability.
• Mentor engineering teams and influence technical direction across the organization.
• Partner with business stakeholders to align technology strategy with long-term business objectives.

• 15+ years of progressive software engineering experience.
• Proven experience in Principal, Staff, or Lead Architect-level roles.
• Expertise designing large-scale distributed systems and eCommerce platforms.
• Strong background with:
  • C#, .NET Core
  • Java
  • Python
  • Go
  • React.js
  • Next.js
  • Type Script
• Deep experience with:
  • Microservices architecture
  • Event-driven systems
  • Domain-Driven Design (DDD)
  • Cloud-native architecture
  • API design and integration patterns
• Advanced Microsoft Azure experience including:
  • AKS
  • Azure Functions
  • Azure Service Bus
  • Cosmos DB
  • Azure Front Door
  • Azure Dev Ops
• Experience with Infrastructure as Code (Terraform or Bicep).
• Strong CI/CD, Dev Sec Ops , and Kubernetes expertise.

• AI agents and multi-agent workflows
• LLM integrations (OpenAI, Anthropic, Gemini)
• Retrieval-Augmented Generation (RAG)
• Vector databases
• AI-powered automation and search solutions
• Operationalizing AI capabilities at enterprise scale

• Experience with industrial or B2B eCommerce platforms.
• Azure Solutions Architect certification (AZ-305) or equivalent.
• Experience with GraphQL federation.
• Experience implementing observability frameworks and reliability engineering practices.
• Background leading architecture review boards, technical communities of practice, and engineering mentorship initiatives.

• Bachelor's or Master's degree in Computer Science, Software Engineering, or a related discipline preferred.
• Equivalent professional experience will be considered.

• Medical, Dental, and Vision coverage
• Company-paid Life Insurance
• Short-Term and Long-Term Disability
• 401(k) with automatic enrollment eligibility
• Paid Holidays
• PTO beginning on day one
• Additional voluntary benefit offerings

This is an opportunity for a highly accomplished technologist to shape the architecture, cloud strategy, and AI roadmap for a complex enterprise platform while remaining deeply involved in hands-on engineering and innovation.