Surajit Chakravarty
Jacksonville,FL
Summary
IT operations and application support professional focused on Unix/Linux environments, Oracle databases, middleware, and production stability. Known for incident triage, root cause analysis, deployment readiness, and automation using Unix scripting, Ansible, Jenkins, Dynatrace, Splunk, and Grafana to improve availability and reduce manual effort.
Overview
28
28
years of professional experience
Work History
Senior Systems Management Analyst - UnitedHealthcare Medicare & Retirement IS (Contract)
UnitedHealth Group
Horsham, PA
10.2022 - Current
- Managed application service availability and resolved incident queues while aligning with ITIL standards for incident and change management.
- Monitored application environment health and drove improvements in availability and performance using tools like Dynatrace, Splunk, and Grafana.
- Working with business and development teams to understand data discrepancy and build database scripts for remediation.
- Automated routine tasks using Unix scripting and other tools to enhance operational efficiency
- Analyzed data discrepancies due to abrupt termination of batch jobs and application aberrations to drive resolution efforts
- Provided 24x7 support for critical incident calls to ensure rapid resolution and minimize downtime.
- Coordinated root cause analysis for incidents, identifying and implementing permanent resolutions.
- Hardware/Software Platform: Red Hat Enterprise Linux Server 7.x/8.x, IBM WebSphere MQ, Oracle Database 19c and Exadata Database Machine 19.1, Oracle SQL Developer 20.4, WinSCP, SPLUNK, Dynatrace, Grafana, Jenkins, Kubernetes and so on.
- UnitedHealthcare Medicare & Retirement IS (UHG M&R IS) is dedicated to the health and well-being needs of seniors and other Medicare beneficiaries by providing them with a choice of innovative technology solutions that help them access the quality care they need and enjoy the superior experience they deserve. The technology innovations and navigations revolve primarily around the pivotal application system COMPAS (Comprehensive Policy Administration System). There are APIs and java applications running on VMs supported by services like Kubernetes. The applications use oracle database at the backend.
Technical Lead, Production Support (Distributed Architecture)
FIS (Fidelity National Information Services Inc)
Jacksonville, FL
12.2014 - 10.2022
- Distributed Architecture Team in FIS is spread across two locations in the country - Lombard, IL and Jacksonville, FL and another location in Pune, India. This position demands multi-disciplined technology skills. I have been working as the Technical Lead in Jacksonville. Responsibilities include
- Supported proprietary web applications for FIS by ensuring optimal performance and integration. (front end and back end) integrated with web services API and a host of complex networked interfaces, ensuring that the applications are all up and running optimally.
- Configuring, maintaining, and testing enterprise application from its inception to its final release.
- Troubleshooting software and configuration issues by reviewing application logs and codes to resolve incidents.
- Resolved incidents promptly to meet SLAs by identifying solutions and performing root cause analysis (RCA) on problems.
- Developed unix shell scripts to automate system maintenance tasks, improving system reliability and monitoring efficiency.
- Developing oracle pl/sql stored programs and sql queries to investigate back-end application issues and generate customized client reports.
- Reported application bugs and defects to development team, collaborating to identify automation opportunities and optimize solutions.
- Created dashboards for business processes using CA APM Introscope, enhancing monitoring capabilities and establishing threshold values for 'Danger' and 'Caution' alerts, while utilizing Splunk to identify application issues and facilitate quick debugging.
- Created, configured, and maintained enterprise-wide an enterprise-wide backup and fault-tolerant disaster recovery (DR) system, participating in periodic failover and failback exercises to ensure recovery readiness.
System Consultant
CSX Technology, Inc.
Jacksonville, FL
08.2013 - 09.2014
- Supported the Monitoring and Automation team of CSX Technology Group by implementing components of CA Application Performance Management (CA APM) Tool Suite, creating a multi-tiered view of applications across all environments. The solutions managed transactions from any device, automatically correlating metrics that are a measurement of a specific application activity or a resource state to help sort through the data and enhance customer experience.
- Diagnosed and analyzed application performance for J2EE, .NET, and Oracle systems, identifying bottlenecks and tuning configurations to enhance overall system efficiency.
- Developed console dashboards to visualize application metrics and performance, aligning with critical application requirements to enhance decision-making.
- Developed end-to-end monitoring solutions through automation, alerting, and reporting using Unix Shell scripts on the Linux server.
- Coordinated and led performance engineering exercises that assessed and enhanced system performance across applications, resulting in increased reliability.
- Supported JVM, IBM MQ, IIB9, and other components in production and test environments, participating in testing activities and cross-training teams to optimize CA APM Tool Suite usage.
- Server-side log analysis and troubleshooting defects for critical java applications in WebSphere, JBoss, WebLogic environments and thus contribute to maintaining an error free distributed technical environment (with multiple JVMs).
- Hardware/Software Platform: CA Wily Introscope Release 9.5.1.0 (Build 900044), Linux GNU/Linux, IBM WebSphere Application Server, JBoss Application Platform, DataPower, WebSphere MQ and IIB9, IBM WebSphere Portal 7 Server, .NET, Oracle 11g, J2EE, AIX, WebSphere MQ, Windows NT.
eCommerce Technical Environment Support Consultant
Bank of America Corporation
Jacksonville, FL
05.2012 - 06.2013
- Configured and prepared WebSphere application runtime environments for e-commerce, including infrastructure design and implementation, application deployment, backend resource connections, and troubleshooting of complex software applications, resulting in optimized operational efficiency.
- Resolved system engineering application defects while collaborating with onshore, near-shore, and offshore teams to establish timelines for functional readiness and performance optimization of WebSphere applications, ensuring timely project completion.
- Ensured stability and maintenance of distributed technical environment with parallel JVMs for critical applications, supporting uninterrupted service delivery.
- Identified and implemented process improvements, streamlining project timelines while maintaining deliverable quality.
- Executed Systems Integration Engineering tasks in a global banking environment with N-tier distributed applications.
- Triaged service transitions including configuration management, release and deployment management, and service operations such as event management, incident management, and problem management in accordance with ITIL best practices.
- Utilized TOAD for database management tasks. Moved data between Oracle schemas in UAT environments.
- Hardware/Software Platform: IBM WebSphere Application Server, WebSphere Data Power, WebSphere MQ, IBM WebSphere Portal 7 Server; Oracle 10g/11g, J2EE, IBM AIX (Unix), Linux, IBM MQ Series, Windows NT, TOAD, SQL Navigator etc.
System Programmer - Enterprise-wide distributed application environment engineering
Blue Cross Blue Shield of Florida
Jacksonville, FL
06.2007 - 04.2012
- Worked as a Senior System Programmer in BCBSL's Information Technology space supporting and maintaining multiple distributed J2EE platforms.
- Developed and maintained enterprise-wide distributed environments for testing and production, ensuring reliable application deployment across Pre-Production and Production environments.
- Identified and resolved defects in configurations of databases (Oracle, DB2 UDB, and DB2 Mainframe) and J2EE components, enhancing overall system functionality and stability.
- Managed server-side backend systems on Unix and Linux operating systems, optimizing performance and reliability.
- Worked with internal IT organizations to find resolution to system failures and provided a root cause analysis.
- Monitored application performance and provided actionable recommendations, enhancing system efficiency and reliability.
- Migrated application code and implemented code packaging and deployment procedures
- Automated support through cron job scripting in Unix, environment sanity checks with shell programs, and database environment builds using PL/SQL and SQL scripts.
- Utilized a range of hardware and software platforms, including IBM WebSphere and Oracle databases, to support application development: IBM WebSphere Application Server, WebSphere DataPower, WebSphere MQ, IBM WebSphere Portal 7 Server; Oracle 10g/11g, J2EE, IBM AIX (Unix), Linux, IBM MQ Series, Windows NT, PL/SQL, SQL Navigator, PRO
- C, IBM Rational ClearCase.
Oracle Data Architect - Enterprise Deployment and Performance
Blue Cross Blue Shield of Florida
Jacksonville, FL
05.2006 - 05.2007
- Architected data model simulating production-like data environment for operations and training services of BCBSF, setting up complex n-tier business model with replication of production data, and implementing referential integrity and Oracle security across over six hundred tables.
- Simulated and deployed BCBSF's Diamond health claims processing application, enabling over one hundred users to access the environment with production-like security and Unix operating systems authentication.
- Worked as the technical lead developing PL/SQL programs for creating the simulated Oracle DATA Environment of Diamond and coordinating with Middleware Administration for setting up Queue Managers and application queues. Tools used were Oracle PL/SQL, Unix shell programs, Pro
- C.
- Hardware/Software Platform: IBM AIX (Unix), IBM MQ Series, Windows NT; PL/SQL, SQL Navigator, PRO
- C, PVCS.
Oracle Database Consultant - Retirement Group Technology
Merrill Lynch - Retirement Group Technology
Hopewell, NJ
09.2005 - 03.2006
- Developed strategies to ensure enterprise-wide Oracle data integrity and consistency, enhancing system reliability as an Oracle Database Consultant.
- Managed multiple database instances in batch and online environments; administered databases, developed Oracle backend programs, wrote and customized Unix shell scripts, and reengineered client interface enhancements through systems analysis and design based on real-time trading requirements.
- Enhanced product performance by writing procedures and functions encapsulated in global Oracle packages, utilizing Oracle Explain Plan and trace facility to optimize SQL statements.
- Configured Net8 for server and client-side connections, establishing multithreaded server and Connection Manager for improved database interactions.
- Performed archiving of redo log files to maintain database integrity. and performed hot backups, ensuring robust backup and recovery operations.
- Wrote a host of DDL scripts using Oracle's dynamic SQL methods.
- Led efforts to develop product enhancements and implement them across Merrill Lynch Retirement Group's alliance and investment-only partnerships.
- The application was an online 3-tier one with over a hundred client institutions keeping employees' stocks and stock option plans with a variety of grant agreements, vesting, exercise, and sale options. The .NET interfaces were supported by a host of PL/SQL programs driving the robust Oracle 9i engine at the back end.
- Hardware/Software Platform: Solaris x64, Windows NT; PL/SQL, SQL TOAD, PVCS.
Oracle / .NET Technical Architect
Real-Time Systems Inc.
Kolkata
07.2002 - 08.2005
- Acted as .NET Technical Architect, designing and developing Windows and web applications aligned with company business model using ASP.NET and C#.
- Designed and built medium-sized product management solution (PMS) that streamlined product management processes for employees.
- Developed system that enabled employees to manage product sales efficiently, facilitating addition and updates of product and supplier information.
- Maintained product management system by adding new product details and updating existing product information to ensure accuracy and relevance.
- The application catered for the UI for the database, database updates, handling of update conflicts with the optimistic concurrency approach, error resolution using ADO.NET features for a disconnected architecture.
- The Web application focused on taking the business of the client online and enabling visitors to the site to buy products on offer by the company.
- The major pages were User Login page, Detailed User Registration page, Product Selection page, Shopping Cart page (allowing users to view and remove items), Purchase (checkout) page.
- The work revolved around setting up a three-tier design model with Business Objects that interacted with the database and executed Stored Procedures in the middle tier. Security was enforced through forms authentication method using web config file, authentication cookies and authorization tags.
- Hardware/Software Platform: Visual Studio.NET and Oracle, Windows NT Server. VB.NET / C# and ASP.NET.
Diamond Support Analyst - Oracle Data Management for Diamond Application Support
Blue Cross Blue Shield of Florida
Jacksonville, FL
02.1999 - 03.2002
- Led team of four in supporting multiple Oracle Database instances, developing Oracle backend programs and troubleshooting Unix 3rd party software with customized shell scripts.
- Developed and maintained Oracle backend programs using PL/SQL, troubleshooting Oracle packages, procedures, and functions to ensure optimal performance.
- Executed daily maintenance and operations of EPI daemons for Diamond application across multiple databases using UNIX cron and custom scripts to ensure reliability.
- Maintaining a tool called Bulk Data Loader (BDL) which loads data directly into a Diamond database while maintaining data integrity and consistency using SQL
- Loader, PRO
- C and PL/SQL.
- Managed version control processes with PVCS to track changes, ensuring code integrity and consistency across development efforts.
- Hardware/Software Platform: IBM AIX 4300 (Unix), Windows NT; PL/SQL, SQL Navigator, SQL
- Loader, Unix shell scripts, PVCS.
Education
Post Graduate Diploma - Computer Applications
M.S - High Energy Physics
B.S - Physics
Skills
- Database management systems
- Application monitoring
- Programming languages
- Unix scripting
- Incident management
- Data integration
- Operating systems
- Cloud technologies
- CRM and ERP
Timeline
Senior Systems Management Analyst - UnitedHealthcare Medicare & Retirement IS (Contract)
UnitedHealth Group
10.2022 - Current
Technical Lead, Production Support (Distributed Architecture)
FIS (Fidelity National Information Services Inc)
12.2014 - 10.2022
System Consultant
CSX Technology, Inc.
08.2013 - 09.2014
eCommerce Technical Environment Support Consultant
Bank of America Corporation
05.2012 - 06.2013
System Programmer - Enterprise-wide distributed application environment engineering
Blue Cross Blue Shield of Florida
06.2007 - 04.2012
Oracle Data Architect - Enterprise Deployment and Performance
Blue Cross Blue Shield of Florida
05.2006 - 05.2007
Oracle Database Consultant - Retirement Group Technology
Merrill Lynch - Retirement Group Technology
09.2005 - 03.2006
Oracle / .NET Technical Architect
Real-Time Systems Inc.
07.2002 - 08.2005
Diamond Support Analyst - Oracle Data Management for Diamond Application Support
Blue Cross Blue Shield of Florida
02.1999 - 03.2002