Mark Donnelly
Software Engineer - Mainframe at APR Consulting, Inc.
Lynn, Massachusetts, United States
Summary
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Senior🎓
Top SchoolMark Donnelly is a seasoned mainframe software engineer with 14+ years of focused experience designing and delivering DB2-centric solutions in z/OS environments. He combines deep expertise in COBOL, PL/I, embedded SQL and MQ Series with hands-on experience in stored procedures, performance tuning, and large-scale database physical modeling. Mark has repeatedly led development and migration efforts—most notably converting legacy DB2/IMS systems to Oracle/Unix—and thrives under tight deadlines while providing 24x7 production support. Comfortable both as an individual contributor and a team lead, he brings strong analytical and debugging skills that surface and resolve unexpected issues during development and testing. Based in Lynn, MA, he blends traditional mainframe craftsmanship with familiarity in Java, JavaScript and SQL Server, enabling pragmatic integrations between legacy systems and modern layers.
14 years of coding experience
26 years of employment as a software developer
BS, Political Science/ Computer Science, BS, Political Science/ Computer Science at Salem State UniversityGithub contributions (1)
meadmaker/sql-style-guide
Apr 2012 - May 2013
Contributions:8 commits in 1 year 1 month
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