Kamil Leszczuk

Highlights

• Working in Clojure and ClojureScript since 2014. During that time I've helped to build several fintech, ecommerce and banking applications. I've worked on the frontend, APIs and services implementations.
• Typically I prefer to focus on the frontend and web services development, but I have a full stack experience. I enjoy working on UI and UX problems too.

Experience

1. Vertex (Taxamo) 2020 - current

   Working on a tax liability and tax rates engine and web services. I'm also creating supporting web applications and proof of concepts. Starting in 2023, I took on a role of a dev team leader.

2. Raiffeisen Bank International 2022 - 2023

   Worked on a backend for loan management system. It was an event sourcing system implemented as microservices.

3. Aviso (Fexco) 2014 - 2020

   Led development of web applications for two payment switches. One has been written in ClojureScript and Reagent, with a Clojure backend. The other in Javascript and Vue.js (with ClojureScript backend on GCP).

4. Deutsche Telekom 2014 - 2015

   Worked with Mozilla and DT's Innovation Laboratories on Firefox OS's NFC subsystem.

5. T-Mobile 2010 - 2014

   Worked in the innovation team developing proof-of-concepts and driving innovation at T-Mobile. Important public projects conducted include Open API, Freeyah, Firefox OS deployment.

6. Prior to that I worked as a packet core specialist for T-Mobile (2009-2010); software developer for Orange (2008); translator for Polimex-Mostostal (2007, summer job); frontend developer for Siedlce City Museum and Cultural Center (2004-2005, high school job).