Oracle PL/SQL Developer Resume

Tom Hayden III

**** ********* ****. #***** 214-***-****

Carrollton, TX 75010 www.linkedin.com/tomhaydeniii ***.******.***@*******.***

Summary

Creative, results-oriented PL/SQL / Application Developer with extensive experience in Oracle database development, ETL processes, and large-scale system integration. Proven track record of delivering projects on time, improving system performance, and modernizing legacy applications. Skilled in PL/SQL, Pro*C, SQL optimization, Unix/Linux scripting, and ETL frameworks. Strong background in healthcare, telecommunications, and enterprise applications with deep knowledge of the full SDLC.

Core Skills

Databases: Oracle, PL/SQL, Pro*C, MySQL, MariaDB, Postgres, Sybase

Programming: C, C++, Java, Perl, Shell (Bsh, Csh, Ksh, Bash, AWK, SED)

ETL Tools: Talend, custom ETL scripting, Oracle PL/SQL ETL

DevOps/Cloud: Docker, Kubernetes, YAML, JSON, Helm3, Microservices

OS: Unix, Linux

Other: SQL optimization, query tuning, data modeling, system migration

Professional Experience

Senior Professional Application Developer

Gainwell Technologies – Arkansas 08/2024 – 06/2025

Maintained and enhanced Arkansas Medicaid billing system (Oracle/Pro*C/PL/SQL).

Improved reporting and letter-generation systems per client requests.

Performed database maintenance, correcting inefficiencies in Oracle PL/SQL.

Senior Developer – Infosys (Verizon Project) Richardson, TX

08/2022 – 02/2023

Updated and modernized legacy telecom billing code (C/C++), ensuring compliance with new business requirements.

Lead Developer

Nokia – Coppell, TX 05/2020 – 08/2022

Maintained and modernized Data Remediation ETL tool for telecom client.

Migrated database layer from Oracle(PL/SQL) to MariaDB.

Adapted tool to a microservices architecture using Docker, Kubernetes, Helm3, and Perl DBI.

C/Unix Developer – Tata Consultancy Service (J.C. Penney) Plano, TX

06/2019 – 10/2019

Enhanced label printing systems; implemented USPS handoff system, cutting costs and improving delivery reliability.

ETL Engineer

Teladoc Health – Lewisville, TX 12/2017 – 09/2018

Built ETL flows in Talend, extracting flat-file data into MySQL.

Debugged and resolved critical Java date conversion issue inside Talend.

Developer

ConsultNet Inc. (Contracted to Frontier Communications) – Dallas, TX Nov 2015 – Mar 2016

Built Ksh scripts to run SQL queries in Teradata via BTEQ (Similar to PL/SQL).

Created Oracle SQL triggers to ensure automated record versioning.

Unix ETL Developer

M. Miller & Associates (Contracted to Neiman Marcus) – Irving, TX Feb 2015 – May 2015

Built ETL scripts with Ksh, Sed, and AWK for Vertica database integration.

Wrote scripts to cleanse and reload corrupted database records.

Earlier Career (Condensed)

Held progressive software development and engineering roles with Oxford & Associates (Rent-A-Center), Odyssey (AAFES), CTDI, Epsilon, K-Force (TNMPL), MMC (EDS), Weblink Wireless, Comsys (Excel Communications), E-Systems, General Dynamics, Optek Technology, and LTV Corporation. Experience included ETL development, Oracle PL/SQL programming, Pro*C application support, and database engineering.

OF PARTICUALR NOTE: work at Weblink Wireless was the single handed development of a billing application including writing all code in Pro*C, specifying the entire schema for an Oracle data base and writing the scripts to install everything.

Education & Certifications

M.Eng. Software Engineering – University of Texas at Arlington

B.S. Electrical Engineering – University of Texas at Arlington

Oracle Certified Associate Java SE 8 Programmer (2017)

Oracle 10g DBA Certified Professional (2010)

CompTIA Linux+ Certified Professional (2009)

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