Senior SaaS Platform Architect – AWS, HIPAA Security

CitiusTech; Knoxville (TN); On-site; USD 140,000 - 210,000; Full time

Benefits offered by this job

Great Place to Work

Comprehensive set of benefits

Be You Be Awesome EVP

Job summary

CitiusTech is seeking an experienced Enterprise/Platform Architect to own the end-to-end platform architecture for a multi-tenant SaaS on AWS. You will set reference architecture, guardrails, NFRs, ADRs, and roadmaps spanning application, data, security, DevSecOps, and cost optimization.

You will partner with business, product, design, and compliance to ensure scalability, auditability, and adherence to HIPAA rules, while driving architecture reviews and platform evolution across SAFe trains.

Qualifications

• 15–22+ years in architecture roles for SaaS on AWS.
• Production Kubernetes + Istio experience.
• Multi-tenant patterns and data isolation.
• Security/compliance for healthcare (HIPAA/PHI).
• FinOps and capacity planning.

Responsibilities

• Define north star architecture and reference implementations; maintain roadmaps.
• Define EAI and multi-tenant SaaS reference architecture with key systems.
• Lead architecture reviews and ADRs; drive architecture runway.
• Partner with security/compliance on HIPAA/HITRUST controls by design.
• Establish the microservices architecture for .NET on EKS with Istio; model state machines and SLAs.

Skills

Enterprise architecture

AWS

Kubernetes + Istio

.NET microservices

Camunda BPMN

HIPAA/PHI security

FinOps / cost modeling

Azure

Reference architecture

Tools

Aurora Postgres/MySQL

Terraform

CDK

Job description

CitiusTech is seeking an experienced Enterprise/Platform Architect to own the end-to-end platform architecture for a multi-tenant SaaS on AWS. You will set reference architecture, guardrails, NFRs, ADRs, and roadmaps spanning application, data, security, DevSecOps, and cost optimization.

You will partner with business, product, design, and compliance to ensure scalability, auditability, and adherence to HIPAA rules, while driving architecture reviews and platform evolution across SAFe trains.