Arman Kolahan

*Unite (formerly Mercateo) is a Leipzig-founded B2B e-procurement platform and marketplace for business and public-sector buyers across 12 European countries, with 700+ employees.* - Drive platform and architecture for 40–60 engineers across 10+ teams: a shared Nx monorepo and micro-frontend foundation running ~100 independently deployable applications, built by consolidating fragmented, independently built apps and stacks into one platform. - Set technical direction without direct authority: authored 5+ gl

*Finmarie is a Berlin fintech startup that helps women invest and build financial independence through an investment app, financial education and advice.* - Led software architecture in a 5-engineer startup team and owned the initial design and implementation of the platform across backend, web, and mobile. Web, iOS and Android apps reached production 3 months after the first commit. - Chose TypeScript end to end (Nest.js, Next.js, React Native) so a small team could share one language, tooling, and code ac

*Buddyfit is a Genoa-based fitness platform offering live and on-demand workout classes through mobile, TV and web apps.* - Contributed to architecture decisions in a 5-8 developer team, covering the Android app architecture, backend service design, and CI/CD. - Built the Android, Android TV, and Fire TV apps from scratch in Kotlin with MVVM and dependency injection. The app ranked in the top 10 of Google Play’s Health & Fitness category in Italy for 2 months, held a 4.5 average rating in that period, and p

Built the company’s web and mobile apps from a shared codebase, introduced structured state management as complexity grew, designed APIs for both clients, and automated deployment and tests to reduce release risk.

Improved the product’s frontend experience, expanded backend APIs and services, optimized the data model as volume grew, and shipped SEO work that increased organic visibility.

Built and maintained the university-wide application used by students, professors, and staff, digitizing key administrative processes. Implemented the backend, real-time APIs, and automated email notifications.

Delivered multiple client web projects with dynamic front-ends, interactive experiences, and customized sites.