Senior Platform Architect

MTech Systems•Atlanta, GA

1d•Hybrid

About The Position

The Senior Platform Architect will lead the technical architecture, design, and modernization of large-scale, multi-tenant enterprise SaaS platforms built on Azure and the .NET stack. This role requires mastery of distributed systems, cloud-native design, and advanced engineering practices to deliver highly available, performant, and secure solutions for global consumer-facing SaaS and Agentic AI products.

Responsibilities

Architectural Design & Transformation Lead migration from monolithic systems to modular monolith and microservices architectures using domain-driven design, bounded contexts, and decomposition strategies.
Design multi-tenant SaaS platforms with advanced tenant isolation, resource partitioning, and elastic scaling using Azure services.
Define and enforce architectural standards for .NET (C#), TypeScript, Angular, SQL Server, and Azure, including dependency injection, SOLID principles, asynchronous programming, and reactive patterns.
Design and implement distributed systems: service orchestration, API gateway management, IoT, edge computing, distributed transactions, eventual consistency, CQRS, and event sourcing.
Architect for cloud-native resiliency: circuit breakers, bulkheads, retries, failover, geo-redundancy, and disaster recovery using Azure App Services, Azure Functions, Service Bus, Cosmos DB, and Azure SQL.
Develop and maintain architecture documentation, reference models, and decision records using industry frameworks (TOGAF, Zachman, C4 Model).
Establish and monitor platform SLOs (latency, throughput, error rates, availability) mapped to customer SLAs.
Architect and implement advanced caching strategies, indexing, and query optimization for SQL Server and NoSQL stores in coordination with Senior Data Architect, Data Engineers, and Database Admins.
Design and implement telemetry pipelines: distributed tracing (OpenTelemetry), structured logging, metrics collection, and real-time dashboards for system health and diagnostics.
Conduct performance profiling, load testing, and capacity planning for backend services and frontend applications.
Architect and implement CI/CD pipelines with automated build, test, security scanning, and deployment workflows.
Integrate static code analysis, code coverage, and quality gates into the development lifecycle.
Design and enforce automated testing strategies: unit, integration, contract, and end-to-end tests for backend and frontend components.
Develop infrastructure as code (IaC) solutions for repeatable, scalable cloud provisioning.
Create incident response playbooks for rollback, failover, and recovery, drive down MTTR and automate remediation where possible.
Architect for multi-tenant security: authentication/authorization (OAuth2, OpenID Connect), encryption at rest and in transit, secrets management, and compliance with SOC 1, SOC 2, GDPR, and other regulatory standards.
Implement secure software development lifecycle (SSDLC) practices, threat modeling, and vulnerability management, including ZDR, DLP, No Model Training policies with AI Models.
Ensure architectural governance and alignment with enterprise frameworks (TOGAF, Zachman), maintain architecture decision records, and participate in architecture review boards.
Mentor engineering teams in advanced architectural concepts, distributed systems, cloud-native development, and best practices.
Collaborate with Data Architect, DevOps, IT Services, Engineering and Product Management teams to ensure platform extensibility, integration, and support for complex business requirements.
Evaluate and integrate AI/ML services, advanced analytics, and developer productivity tools to enhance platform capabilities.
Champion a culture of technical excellence, continuous improvement, and innovation