Lead Engineer & Tech Lead with 20~ years across mobile and backend. Work best where product complexity is high, reliability matters, and teams need clear technical direction. Strong focus on iOS architecture, platform evolution, and helping engineers do their best work. Applying agentic engineering to streamline developer workflows and accelerate the software delivery lifecycle. Pioneered DPoP-based authentication at scale, eliminating token replay vulnerabilities without UX regression. Background spans fintech, ecommerce, SaaS, and startups. Based in Berlin with German work rights, open to Principal iOS Engineer and Tech Lead roles across Europe.