David Cassel
Fractional CTO at 4V Services
Pennsylvania, United States
Summary
👤
Senior🎓
Top SchoolDavid Cassel is a Fractional CTO and seasoned technology leader with 14+ years of experience helping growing companies turn technology from a bottleneck into a growth driver. He specializes in data-driven systems and modernization—particularly for health insurance TPAs and other data-intensive industries—bringing practical architecture, delivery discipline, and security-minded data strategy to bear. A former MarkLogic senior staff engineer and community lead, he combines deep NoSQL/database expertise (including MarkLogic Data Hub work) with hands-on implementation skills like NiFi and custom processors. He co-founded 4V Services to deliver architectural guidance, team scaling, and measurable business outcomes on a fractional basis. David pairs academic teaching experience with a history of building production systems across financial services, defense, and manufacturing, so recommendations balance theory with operational realities. He treats AI as a pragmatic productivity tool—carefully governed and applied where it adds measurable value rather than as hype.
14 years of coding experience
21 years of employment as a software developer
Computer Science, Computer Science at Drexel UniversityMS, Computer Science, MS, Computer Science at Northeastern UniversityBS, Computer Science, BS, Computer Science at Villanova University
English
Stackoverflow
8,362reputation
120kreached
318answers
23questions
rest
top-5%
xml
top-5%
Github Skills (129)
database-management10
gradle-plugin10
marklogic10
markdown10
mlcp10
javascript10
triplestore10
gwt10
database10
logic10
resttemplate10
json10
xquery10
java10
teacup10
Programming languages (7)
Github contributions (5)
dmcassel/bitemp-explorer
Jul 2015 - Sep 2015
Contributions:30 pushes, 5 branches in 2 months
bitemporalreactmarklogicqueries
dmcassel/roxy
Jan 2015 - Nov 2017
Contributions:1 PR, 59 pushes, 40 branches in 2 years 10 months
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