Russ Callahan
Principal Software Engineer at Square 205
Denton, Texas, United States
Summary
👤
Senior🎓
Top SchoolRuss Callahan is a Principal Software Engineer with a decade of full-stack experience and a background in engineering management, currently driving initiatives at Fidelity Investments while also contributing at Square 205. He transitioned from a decade as a band director into software, bringing strong communication, pedagogy-informed coaching, and process discipline to technical leadership and team development. His hands-on work spans frontend and backend roles across startups and enterprises—including Launch by NTT DATA/Postlight and Sabre—where he moved between individual contributor and manager tracks. Based in Denton, Texas, Russ pairs practical product focus with a knack for mentoring engineers and translating complex requirements into maintainable systems. An engineer by trade and educator at heart, he often applies instructional techniques to improve onboarding, code review culture, and cross-team collaboration.
11 years of coding experience
17 years of employment as a software developer
Music Education, Music Education at Washburn UniversityMaster’s Degree Music Education, Master’s Degree Music Education at University of North TexasBachelor’s Degree Music Education, Bachelor’s Degree Music Education at Wichita State University
Stackoverflow
13reputation
13kreached
0answers
1question
Github Skills (59)
dao10
database-tools10
sliders10
mongodb10
abcjs9
rendering9
webhooks9
abc-notation9
graphql-api9
full-stack9
data-journalism9
access-control9
subgraph9
orm9
api9
Programming languages (6)
Github contributions (5)
russc/noterace2
Apr 2016 - Oct 2018
Contributions:20 pushes, 1 branch in 2 years 6 months
russc/BoxingBeats
Apr 2016 - Oct 2018
Contributions:13 pushes, 1 branch in 2 years 6 months
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