# Manikandan Eswaran > Principal Software Development Engineer - Distributed Systems at Workday Location: San Francisco Bay Area, United States Profile: https://flows.cv/manikandaneswaran • 18 Years of experience developing cloud and on-prem software products in healthcare domain. • Demonstrated self-driven engineer with good problem solving, technical leadership and team mentoring skills. • Very hands-on in design and development of AWS cloud-based software products using microservices architecture. • Experience in performance tuning, benchmarking, profiling and scaling Java, JEE applications. • Follow principles of good design, simple and efficient algorithms, well documented and readable code and inculcate the same in the teams I mentor. • Experience in software development using agile methodology and agile tools. • Possess good work experience and deep understanding of healthcare domain, HL7 V2, HL7 V3, HL7 FHIR and IHE healthcare standards. ## Work Experience ### Principal Software Development Engineer - Distributed Systems @ Workday Jan 2021 – Present | San Francisco Bay Area Object Management Services (OMS) is a strongly consistent distributed in-memory database/datagrid that supports all of Workday customers, handling millions of user transactions per day. I am part of Instance Management team that handles the caching of all the in-memory data. ### Staff Software Engineer - AncestryHealth @ Ancestry Jan 2019 – Jan 2021 | San Francisco Bay Area Ancestry Health product was released by Ancesry.com in Nov-2019. The product helped customers know the likelihood of developing certain health conditions based on their DNA makeup. Designed and implemented workflows for delivering new versions of health reports to subscription customers. Drove self initiated automation efforts to the CI/CD process and testing of complex workflows involving many micro-services to significantly reduce the testing time for quality engineers. Introduced the team to AWS Lambda based pure server-less REST APIs using provisioned concurrency for appropriate services in addition to existing full scale spring boot micro-services running on AWS ECS Fargate instances. ### Principal Software Engineer - Healthcare @ Philips Jan 2018 – Jan 2019 | San Francisco Bay Area Principal Engineer with R&D, designing and developing HL7 FHIR standard based Clinical Data Repository that is part of Philips HealthSuite digital cloud platform. Clinical Data Repository is a open and secure PaaS service capable of managing clinical data from healthcare organizations in RESTful FHIR standard format. The Clinical Data Repository is a highly scalable and elastic platform that is deployed using Cloud Foundry PaaS services on AWS infrastructure. ### Sr. Principal Applications Engineer - Health Sciences @ Oracle Jan 2012 – Jan 2018 | Greater Los Angeles Area Contributed to the product design, development, performance improvement, customer education and support for the Oracle Healthcare Data Repository product. Oracle Healthcare Data Repository (HDR) is Oracle’s clinical data repository offering that supports HL7 V3 standard and preparing to embrace the newer REST based HL7 FHIR standard. Actively participated in Strategic Development Partnership (SDP) efforts with key customers in building key product features identified as key priorities that are beneficial to both Oracle and customers. The product is implemented at national scale in nationwide EHR solutions at Singapore, Denmark, Australia and few customers in US. ### Technical Architect - Healthcare @ Capital Technology Information Services Jan 2012 – Jan 2012 | Rockville, Maryland Contributed to the Inova Information Intelligence (I3E) project by building some of the healthcare source system integration interfaces. Developed a proof of concept integration solution to collect and store IoT data from Qualcomm wearable devices. ### Technical Architect - Healthcare @ innoValus Technologies Jan 2011 – Jan 2012 | Bangalore India Developed source system integration interfaces to bring in healthcare data from various EMRs like GE Centricity, Siemens etc to the Oracle Healthcare Transaction Base (HTB) platform, as part of the Inova Information Intelligence Engine (I3E) project for the Inova Health System hospital in Washington US. ### Sr. Principal Application Engineer - Health Sciences @ Oracle India Pvt Ltd Jan 2010 – Jan 2011 | Bangalore, India Lead the development efforts in Oracle Healthcare Data Repository 7.0 release. Implemented IHE XDS.b specification in Oracle HTB/HDR. Developed a base framework to support transaction handling, user authentication, service life cycle management, etc to be used in all service interfaces used in the product. Mentored a team of 5-7 developers. ### Principal Application Engineer - Health Sciences @ Oracle India Pvt Ltd Jan 2007 – Jan 2010 | Bangalore, India Designed and developed a flexible and powerful generic metadata based business web services solution, for customers to implement their business use cases, on top of HTB APIs that are abstract in nature resembling HL7 RIM. Represented Oracle at ‘IHE Connectathon North America 2010’ and received IHE XDS.b document repository certification for the Oracle HTB product. Actively involved in development, implementing enhancements and providing customer support for various functionalities of Oracle HTB product, namely Messaging, Business API web services, RIM Persistence, RIM Query and CTB Framework. Developed a proof of concept human workflow solution using Oracle BPEL and Human Workflow products to demonstrate these product capabilities to build a software solution at the Celveland Clinic, Ohio. ### Senior Application Engineer - Health Sciences @ Oracle India Pvt Ltd Jan 2005 – Jan 2007 | Bangalore, India Implemented HL7 V3 outbound message processor service (OMP), HL7 V3 inbound message processor (IMP) Configuration Service in the Oracle HTB product. ### Application Engineer - Health Sciences @ Oracle India Pvt Ltd Jan 2003 – Jan 2005 | Bangalore, India Implemented HL7 V3 inbound message processor (IMP) features in Oracle Healthcare Transaction Base (HTB) product. ### Project Engineer @ Wipro Technologies Jan 2002 – Jan 2003 | Bangalore, India Implemented some of the customization to the media and entertainment product called TEAMS, using Java, JSP, SQL and PL/SQL Programs. Served as a key member of the development team responsible for developing web based UIs using JSP and implementing business functionalities in EJB and PL/SQL stored procedures. Gained experience in JDBC, PL/SQL stored procedure and JSP UI development. ### Software Engineer @ Triniti Advanced Software Labs Pvt. Ltd Jan 2002 – Jan 2002 | Secunderabad eDapter Toolkit: ----------------------- • Involved in product development - eDapter Toolkit, an EAI for product for integrating enterprise applications. • Served as a member of the development team. • Served as a key developer for the UI modules of the EAI product eDapter for integrating SAP ERP system with Oracle ERP systems. • Worked extensively on Java Swing UI development including drag and drop features for source to destination data mapping. ## Education ### Master of Science - MS in Computer Science California State University, Los Angeles ### Bachelor of Engineering - BE in Computer Science Bharathiar University ## Contact & Social - LinkedIn: https://linkedin.com/in/manikandan-eswaran-6544ab --- Source: https://flows.cv/manikandaneswaran JSON Resume: https://flows.cv/manikandaneswaran/resume.json Last updated: 2026-04-12