# Career

## Ciklum

### Expert Embedded Software Engineer

January 2026 – present

Mentoring engineers, exploring new technologies, and helping teams work through
technical roadblocks. The role also includes interviews, technical discussions
with customers, conference talks, and project planning.

Technologies: Rust, C#, ESP32, STM.

### Senior Embedded Software Engineer

March 2024 – December 2025

Developing, reviewing, and testing software for consumer electronics and IoT
devices, alongside coaching junior engineers and speaking at conferences.

Technologies: C, C++, Rust, Python, ESP32, STM.

## Modus Operandi s.r.o.

### Freelance Senior Software Engineer

March 2022 – present

Billing and payment processing, custom backends, containerization, and IoT
solutions through my own company.

Technologies: TypeScript, C++, C#, AWS, ESP32, Elasticsearch, MQTT, PHP.

### Websupport

November 2022 – February 2024

Backend development for internal service-migration tools, from domain-driven
design to Redis optimization. Shared experience with the team to improve
backend code standards.

### eFabrica

March 2022 – November 2022

Backend development with Nette, including identifying and fixing critical
security vulnerabilities in the codebase.

## PixelFederation

### Senior Backend Developer

March 2018 – December 2021

Co-developed a mobile payment-processing system using domain-driven design,
CQRS, and event sourcing in PHP. The work covered payment handling, software
architecture, and maintaining the codebase.

Technologies: PHP, TypeScript, DDD, CQRS, event sourcing, AWS, Fluentd, Kibana,
Prometheus, Elasticsearch, React, Webpack.

## Ferratum Group

### Backend Developer / DevOps Engineer

April 2017 – March 2018

Developed a bank loan-accounting system and helped modernize the infrastructure
with DevOps practices and tooling.

Technologies: PHP, Kubernetes, Redis, Docker, Fluentd, static analysis.

## Superfaktura

### Full Stack Developer

April 2016 – April 2017

Invoicing and accounting software, database optimization, and Linux
administration. The role also involved direct customer support and translating
business requirements into working software.

Technologies: PHP, MySQL, Elasticsearch, Linux.

## IT Academy

### Programming Lecturer

March 2016 – June 2017

Part-time teaching of C, Java, PHP, and HTML. An early opportunity to build the
presentation and teaching skills that still come into play in mentoring and talks.

## Adrián Paníček – Citron

### Freelancer

December 2014 – June 2017

Web administration, CMS plugins and integrations, server migrations, and custom
software solutions.

Technologies: Nette, MSSQL, database optimization, frontend development.

## Metrumservis

### Lead Developer

January 2014 – January 2015

Built a B2B shop with warehouse integration for stock and pricing, accounting
documents, and customer-specific pricing across international markets.

Technologies: PHP, Nette, warehouse and accounting integrations.

[GitHub](https://github.com/adrianpanicek) · [Contacts](CONTACTS.md) · [About](ABOUT.md)