Adetola Onasanya
Senior Software Engineer at Duplo
Nigeria
Summary
👤
Senior🎓
Top SchoolAdetola Onasanya is a Senior Software Engineer with a decade of experience building scalable, secure payment and web systems across startups and global firms. Currently at Duplo, he architects PCI DSS-compliant payment pipelines, implemented event-driven inflow processing with Google Pub/Sub, and helped integrate multiple Nigerian banking APIs to enable virtual accounts handling N10M+ daily. He has a strong full-stack background—leading TypeScript migrations at StubHub, delivering seller and customer-service MVPs, and building data-driven internal tools with Node.js, GraphQL, and React. Known for thorough documentation and API contracts, he reduced onboarding time and cross-team integration issues by 60% through ERDs, sequence diagrams, and ADRs. A hands-on mentor and team lead, he consistently blends engineering rigor with practical product delivery and security-first thinking. Based in Nigeria, he pairs global product experience with deep knowledge of local payments and banking integrations.
10 years of coding experience
9 years of employment as a software developer
BSc Computer Science Computer Software Engineering, BSc Computer Science Computer Software Engineering at Adekunle Ajasin University, Akungba-Akoko, Ondo State, Nigeria.
English, Yoruba, French
Stackoverflow
716reputation
58kreached
2answers
7questions
Github Skills (133)
grav9
grav-plugin9
server-side8
nest8
javascript8
cordova-plugin8
ionic-framework8
css8
responsive8
cordova8
twig8
tailwindcss8
nodejs8
postgresql7
wiki-engine7
Programming languages (4)
Github contributions (5)
adetoola/php-sms
Dec 2019 - Feb 2021
Contributions:28 commits, 11 pushes, 5 branches in 1 year 1 month
adetoola/avatar
Mar 2017 - Feb 2021
Contributions:2 pushes, 1 branch, 1 tag in 3 years 11 months
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