Joaquin Fernandez
Founder & CTO at TaxDown
Madrid, Community of Madrid, Spain
Summary
👤
Senior🎓
Top SchoolJoaquin Fernandez is a founder and CTO with 11 years of hands-on experience building cross-platform mobile and enterprise software, currently leading TaxDown’s product and technology strategy. He combines startup grit—co-founding JSolutions and shipping five Android apps—with enterprise engineering chops from roles at Aspera/IBM and SAP, where he specialized in SDKs, APIs, C++/Qt front-ends and demo-driven presales. Comfortable across full stacks and deployment lifecycles, he has guided integrations, led developer trainings, and built demo tooling that influences sales cycles across EMEA. Trained at Illinois Institute of Technology and Universidad Politécnica de Madrid, he blends formal systems engineering knowledge with practical product delivery and a knack for turning complex transfer and API challenges into polished developer experiences.
11 years of coding experience
3 years of employment as a software developer
Information Technology & Management Computer Software Engineering, Information Technology & Management Computer Software Engineering at Illinois Institute of TechnologyIngeniero de Telecomunicacion Comunicaciones, Ingeniero de Telecomunicacion Comunicaciones at Universidad Politécnica de Madrid
Spanish, English
Stackoverflow
63reputation
4kreached
1answer
2questions
Github Skills (102)
javascript-client10
serverless-express10
ruby10
automation10
bundler10
aws-serverless10
esbuild-plugin10
javascript10
sdk10
minifier10
lambda10
serverless-plugin10
stylish10
android-apps10
android10
Programming languages (5)
Github contributions (5)
taxdown/.github
Apr 2022 - Mar 2025
Contributions:4 reviews, 1 PR, 79 pushes in 2 years 11 months
taxdown/coding-challenge
Aug 2019 - Jul 2022
Contributions:11 commits, 3 PRs, 18 pushes in 2 years 11 months
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