Marek Lesko — Software Engineering Team Lead

About

I have 25 years of programming experience, starting with Turbo Pascal and Visual Basic 6, working through .NET, Xamarin, .NET Core, TypeScript and Angular. I started coding for fun — building websites and utilities for friends and family — and eventually turned it into a career.

Today I lead software engineering teams delivering business intelligence reporting tools at BigHand, bridging technical decision-making with team execution in an agile environment. I'm passionate about building great products and great teams.

Recognized as Top 10% Manager out of 100,000+ managers (Workleap)

Skills

Backend

.NET Framework .NET Core AWS Azure SQL APIs

Frontend

AngularJS Angular 2+ TypeScript HTML / CSS SCSS

Data & Databases

SQL Server PostgreSQL MS SQL SSAS

Tools & Practices

Git Agile / Scrum Xamarin

AI

LLM Loop Engineering Graph Engineering Prompt Engineering Machine Learning Deep Learning NLP AI/ML Operations

Experience

Software Engineering Team Lead — BigHand Jul 2024 – Present

Remote

Development Team Lead — Iridium Technology (now BigHand) Jun 2022 – Present

Košice, Slovakia

Senior Software Developer — Iridium Technology Jul 2020 – May 2022

Košice, Slovakia

BI Developer — Iridium Technology Jul 2018 – Jun 2020

Full Stack Developer — SportMind Diagnostics May 2017 – Jun 2018

Ostrava, Czechia · Hybrid

CEO & Creative Director — M95.SK s.r.o. Apr 2008 – May 2017

Košice, SK

Projects

BigHand BI Reporting Platform

Business intelligence reporting tool for legal industry — analytics, timecard data, and financial insights.

.NET Core Angular Azure SQL AWS

SportMind Platform

Sports psychology and mental performance tool serving athletes, clubs, and national teams.

.NET AngularJS PostgreSQL