Wojtek Zając
Independent Research & Product Development at Self-employed
Lisbon Metropolitan Area Portugal
Summary
👤
Senior🎓
Top SchoolWojtek Zając is a seasoned software engineer and technical lead with over two decades of experience building high-quality web products, now focused on independent research and product development. He excels at the intersection of frontend architecture, UX, security, analytics, and engineering workflows, having scaled DeFi products at Euler to ~$4B TVL while improving reliability, security practices, and developer velocity. His career includes early work on Twitter’s front-end, leading teams at FOX and Kaplan, and founding and running a Polish branch of Xfive—demonstrating rare hands-on breadth from HTML/CSS to modern React/Next.js systems. Wojtek is pragmatic about shipping measurable UX and performance improvements, mentors engineers, and routinely bridges design, product, and security teams. Currently based near Lisbon, he’s exploring AI-assisted development and tooling, applying his product-minded engineering lens to early-stage prototypes and research.
14 years of coding experience
24 years of employment as a software developer
B.A., Human-Computer Interaction, B.A., Human-Computer Interaction at Jagiellonian University
German, Spanish, Polish, English
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (36)
python10
gatsbyjs10
graphql10
react10
gatsby10
static-site-generator9
security9
idris9
compiler9
width7
angularjs6
recorderjs6
documentation5
vault5
zap5
Programming languages (5)
Github contributions (5)
theanxy/dotfiles
Dec 2013 - Oct 2017
Contributions:34 commits, 22 pushes in 3 years 10 months
theanxy/wojtekzajac.com
Oct 2017 - Feb 2026
My homepage
Contributions:24 PRs, 75 pushes, 4 branches in 8 years 4 months
my-homepage
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