Principal Engineer & Technical Lead — .NET & Azure

The role

You will act as a hands-on technical authority and the SVP of Technology's chief lieutenant. You will build working prototypes, turn architecture into production systems, and lead distributed engineering teams.

What you will do

• Build working prototypes and POCs for advanced concepts
• Write and ship production-quality C#/.NET and Python
• Implement enterprise design patterns in real code
• Author and review IaC, Helm charts, and CI/CD pipelines
• Benchmark and load test candidate designs
• Turn target-state architectures into implementation designs
• Build and harden integration paths into Microsoft Fabric
• Write ADRs and design docs
• Run design reviews, code reviews, and technical checkpoints with onshore and offshore teams
• Mentor senior engineers and tech leads

Required qualifications

• 12+ years in software engineering
• 5+ years as a lead or principal engineer shipping production cloud systems
• 4+ years building and operating containerized workloads on Kubernetes in production, preferably AKS
• Deep, current hands-on Azure experience
• Substantial, active C#/.NET and Python work in the last 12 months
• Deep, applied command of enterprise design patterns
• Track record of taking a novel concept from whiteboard to working POC in weeks
• Working architecture depth across operational and analytical data stores
• Fluency with IaC and CI/CD
• Security-first implementation in a regulated environment (PCI DSS, SOC 2, or financial services equivalent)
• Proven ability to lead distributed and offshore teams through design and code reviews without direct authority
• Clear written communication

Nice to have

• Payments, card processing, risk/fraud, or merchant services domain experience
• Production Microsoft Fabric work
• Shipped LLM-backed features
• Multi-tenant SaaS design
• Azure certifications such as Azure Developer (AZ-204), DevOps Engineer Expert (AZ-400), CKAD/CKA, or Fabric Analytics Engineer (DP-600)
• Open-source contributions, technical writing or conference talks

Benefits

• Health insurance
• Health savings account
• Dental insurance
• Vision insurance
• 401(k) matching
• Life insurance
• Paid time off
• Parental leave
• Disability insurance
• Childcare assistance
• Education reimbursement
• Fitness membership

Before you apply

• Must be willing to submit to a background investigation and drug test

About the company

Aperia Solutions is a leading payments SaaS company headquartered in Dallas, Texas. They build risk management, residuals accounting, compliance, and analytics platforms used by participants in the credit card payments ecosystem.