Mangai Thiagarajan serves as a senior manager within Guidepost’s Technology Advisory Services division. She possesses more than 20 years of experience leading enterprise architecture, cloud transformation, and data modernization initiatives within complex, regulated environments. Ms. Thiagarajan brings a unique blend of architecture and investigations expertise, enabling organizations to strengthen data integrity, risk posture, and regulatory readiness. In her current role, she supports consulting, monitorship, and investigative engagements by leading efforts in forensic data acquisition, environment reconstruction, and data restoration to enable comprehensive analysis and evidentiary review.
Ms. Thiagarajan provides advisory support through data-driven analysis to assess the impact of business and regulatory rules, identify data quality risks, and deliver independent findings, while overseeing the implementation of data governance frameworks to support compliance and sustained effectiveness. She advises clients in litigation-sensitive environments on user acceptance, adoption strategy, and roadmap planning, including identifying quick wins and defining approaches to improve adoption and support subsequent implementation phases. She has defined and executed enterprise data and platform strategies that align technology investments with business and operational objectives. Her experience spans health and human services, healthcare, financial services, and large-scale data environments, with a focus on governance, scalability, and compliance with frameworks such as HIPAA, HITRUST, and FedRAMP.
Ms. Thiagarajan has led enterprise architecture strategy and modernization programs that integrated cloud-native platforms, event-driven architectures, and domain-oriented data design. She established enterprise data models, governance-by-design frameworks, and analytical access strategies that improved data quality, lineage, and observability across distributed systems. Her work included shaping migration roadmaps, designing shared processing and analytics capabilities, and implementing secure, policy-aligned controls across data ingestion, processing, and consumption layers.
In prior roles, Ms. Thiagarajan directed large, cross-functional teams and managed significant program budgets to deliver enterprise-scale modernization initiatives. She guided cloud migrations to Azure and AWS environments, oversaw containerized microservices deployments, and implemented DevOps automation to enhance reliability and deployment efficiency. She also led AI-driven predictive analytics initiatives and advanced data quality programs, applying structured governance and strong delivery oversight to ensure measurable operational improvements.
Ms. Thiagarajan oversaw vendor teams across architecture, engineering, quality assurance, and product functions while serving as a trusted advisor to executive stakeholders. Her background includes leading complex data management and eDiscovery programs, modernizing healthcare technology platforms, and implementing interoperability standards such as FHIR and HL7. She holds an MBA and has certifications including PMP, Microsoft Azure Architect Technologies, and AWS Certified Solutions Architect – Associate.
DID YOU KNOW
I have made many connections in my community thanks to my dog, DJ; people still recognize me primarily as “DJ’s mom.
