Jelmer is a lawyer in the Finance & Restructuring practice at Van Doorne. Jelmer focusses his practice on advising financial institutions and other domestic and international clients on financing and (debt) restructuring transactions. In addition, he advises clients on legal aspects connected to alternative financing and funding methods such as peer-to-peer (P2P) lending, crowdfunding, debt-based securities and invoice financing.

Jelmer regularly publishes on matters related to its expertise in legal literature. He completed the post-graduate INSOLAD/Grotius specialist course on insolvency law in 2016 and a post-graduate INSOLAD/Erasmus University specialisation course on financial economics in 2018.