Sönmez Kartal

Rollup is an identity platform for application users. I have developed infrastructure components, handling crypto wallet authentications, OAuth provider integrations, and user application authorizations implementing OpenID Connect protocol.

I designed and developed the core architecture of a JavaScript framework to build peer-to-peer systems including servers and web browsers establishing a gossip network with peer exchange protocols. Implemented network transports for TCP, WebRTC, and WebSocket.

I was hired to build and grow the engineering team for Connexease, a software-as-a-service project in the customer care business domain. The product was already bootstrapped and established a client base of over 200 companies reached by their customers and vice-versa.

I started as a frontend developer and became a full-stack developer as soon as I was familiar with the backend code base. I have worked on IDE, real-time collaborative editor, and social activity projects as a developer. I was one of the maintainers of the kd.js user interface framework.

Joined as a junior backend developer and became a full-stack developer. Led small and big projects. Implemented critical hot patches to the production environment. Maintained the build pipeline. Built a mobile web version of the site. Implemented WebSocket-based backend for real-time odds updates.

I’ve developed two prototype applications written in Python:

Firewall management: A case study for interactively managing different firewall server software across the country of a bank with a single client application.

Digital signing and encryption of logs: A case study for monitoring the network and collecting metadata about the payload.