Middle/Senior Python Developer (Desktop Team)

Ajax Systems

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Kyiv on site Until 9/6/2026 3+ years exp First posted November 2, 2025 Last posted July 8, 2026
Job description
Ajax Systems is a full-cycle company, working from idea generation and R&D to mass production and sales. We do everything: we produce physical devices (the system includes many different sensors and hubs), write firmware for them, develop the server part, and release mobile and desktop applications. 
 
PRO Desktop meets the needs of every professional working with Ajax security systems. Facilities profiling and remote configuration, alarm monitoring and photo verification, staff administering, and a detailed event log — all in one, intuitive interface.
 
Responsibilities:
- Ajax PRO Desktop development (adding new devices, supporting existing devices, adding new functionality and features, fixing bugs).
- Architectural decisions and concept development.
- Writing tests.
- Hard bug fixing.
- Inter-commands communications.
 
Stack:
- Python 3, PySide 6, QML, gRPC.
 
Must have:
- 3+ years of experience with Python, including multithreading, asyncio.
- Knowledge of OOP principles and patterns.
- Experience with aiohttp.
- Experience with pytest.
- Experience with gRPC.
 
It will be a plus:
- Experience with QML.
- Experience with PySide/PyQt.
 
 
We offer:
- Flexible schedule at our offices in Kyiv or Lviv.
- The opportunity to propose and implement own ideas that have an impact on the product and production.
- Work in a motivated team and zero bullshit culture.
- Competitive salary.
- Medical Insurance.
- Corporate English.
- The opportunity to participate in the beta test project of Ajax security systems - receiving and testing new gadgets before their release.

Responsibilities:

  • Ajax PRO Desktop development (adding new devices, supporting existing devices, adding new functionality and features, fixing bugs).
  • Architectural decisions and concept development.
  • Writing tests.
  • Hard bug fixing.
  • Inter-commands communications.

Stack:

  • Python 3, PySide 6, QML, gRPC.

Must have:

  • -3+ years of experience with Python, including multithreading, asyncio.
  • Knowledge of OOP principles and patterns.
  • Experience with aiohttp.
  • Experience with pytest.
  • Experience with gRPC.

It will be a plus:

  • Experience with QML.
  • Experience with PySide/PyQt.
About this role

Summary

Develop and maintain Ajax PRO Desktop application, implement new features, fix bugs, and shape architecture.

Job title

Middle/Senior Python Developer (Desktop Team)

Experience level

3+ years

Minimum experience

3+ years exp

Industry

software

Location requirements

Kyiv-based, remote work allowed

Salary

Not specified

Management role

No

Skills & keywords

Required skills

python 3multithreadingasyncioOOP principlesaiohttppytestgRPC

Preferred skills

QMLPySidePyQt

Specializations

pythonmultithreadingasynciogrpcpyside
Locations

Structured locations inferred from the posting.

Kyiv, Ukraine, 02000

Remote City
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