Jakub Filipek
PL
software / testing / IoT

I build systems from device to application

Professionally, I focus on software quality by building and maintaining automated tests. In my own projects, I deliver complete solutions spanning devices, backends, web and mobile applications.

Warsaw, PolandFull-stack developer and software tester
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Jakub Filipek
Jakub Filipek
Specializations

Applications, quality and devices

I combine software development, data and quality engineering with a hands-on approach to electronics and IoT systems.

01

Web and mobile applications

Interfaces, administration panels and mobile applications built around data.

02

Backend and integrations

APIs, databases and connections between existing systems.

03

Test automation

End-to-end tests, integration verification and quality workflow improvements.

04

IoT and devices

ESP32 solutions connecting sensors, controls and useful applications.

Selected work

Four projects that best show the breadth of my work

Two live public applications and physical IoT systems show the breadth of my work, from interfaces and backends to devices. Each case study explains the problem and key technical decisions.

Proof in practice

Code, integrations and devices in practice

Concise examples of the scope you can verify in the project case studies.

Sensor -> UI

Complete data path

Telemetry travels from physical devices through the API and PostgreSQL into web and mobile applications.

8 zones

Modbus lighting control

Independent setpoints, power readings and PAR-based automation for a greenhouse installation.

Java + ESP32

Custom TCP communication

A server, text protocol, CSV history and physical sensors working as one system.

Cloud Functions

Trusted server-side logic

Moderation, point operations and security rules moved outside the client application.

Experience

Hands-on work with quality, integrations and data

I combine professional experience with designing complete systems, from the device layer to the user interface.

  1. 07.2024 - present

    Application tester

    Atende Industries

    Creating and maintaining E2E tests in Cypress, integration testing REST and SOAP APIs with SoapUI, analyzing Oracle and PostgreSQL data and diagnosing issues in measurement data processing systems.

    • Cypress
    • SoapUI
    • REST / SOAP
    • Oracle
    • PostgreSQL
  2. 05.2023 - 07.2024

    Junior IT specialist

    JMP Flowers

    Automating business processes with Power Automate and developing software for crop lighting management, including device control over Modbus TCP. Additional responsibilities included user and IT system support.

    • Power Automate
    • Python
    • Modbus TCP
    • REST
    • IT support
Education

BEng in Computer Science

WSB - National Louis University02.2023 - 06.2026

Business application development specialization focused on designing and building web and mobile applications, including system architecture and databases.

Services

Practical solutions for specific technical needs

I can support software development or testing work, from applications and integrations to quality audits, test automation and end-to-end IoT solutions.

Describe your project
  1. 01Web and mobile applications
  2. 02Existing application development
  3. 03Admin dashboards and data visualization
  4. 04Software quality audit
  5. 05Test automation
  6. 06Business process automation
  7. 07API integrations
  8. 08Desktop applications and internal tools
  9. 09End-to-end IoT solutions
Contact

Let us discuss a role or project

I am open to software development and testing roles as well as focused technical projects. Select the topic so your message starts with the right context.

Email directlycontact@jfilipek.comLinkedInjakub-filipek
LocationWarsaw, Poland
I usually reply within one day.

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Technologies

Tools grouped by purpose

I select the stack for the problem. Projects and decisions matter more than a wall of library names.

Frontend

  • TypeScript
  • React
  • Astro
  • Flutter

Backend

  • C#
  • .NET / ASP.NET Core
  • Java
  • Python
  • REST
  • SOAP

Automation and testing

  • Cypress
  • Vitest
  • xUnit
  • SoapUI
  • Postman
  • Power Automate

IoT and devices

  • ESP32
  • Arduino
  • Modbus
  • Sensors

Databases

  • PostgreSQL
  • Oracle
  • Firestore
  • SQL
Let us talk