2+ years of commercial experience in backend development.
Solid experience with Python and a strong understanding of backend development fundamentals, including OOP and REST APIs .
Willingness to learn Ruby on Rails and gradually transition into the project’s technology stack.
Experience with Git and containerization using Docker .
Analytical mindset and strong problem-solving skills.
Ability to work independently within an agreed project scope.
English proficiency at B2 level or higher.
Curiosity and willingness to work with new technologies and technical approaches.

Nice to have:

Basic familiarity with Ruby or Ruby on Rails .
Experience with calculations, algorithms, engineering tasks, or similar problem-solving projects.
Familiarity with TypeScript or AI integrations .
Experience with computational models or optimization-related projects.

We are looking for a Mid Backend Developer (Python/RoR) — B2B Cooperation

Project focus: computational models for solar panel performance & energy optimization

At MindPal , we build intelligent, production-ready systems used across the energy, education, and HR-tech sectors. Our team in Gliwice works on products that directly influence business outcomes — including advanced tools for designing and optimizing solar installations.

We’re looking for a Backend Developer with at least 2 years of commercial experience and solid Python experience who is interested in expanding their skills into Ruby on Rails. While the project is primarily developed in Ruby on Rails, you don’t need to be an experienced Ruby developer to join us — we are open to strong Python backend developers who are willing to learn Ruby on Rails and gradually transition into the project’s technology stack.

Cooperation Description

We offer long-term B2B cooperation on backend projects focused on computational models, solar panel performance, and energy optimization.
The cooperation involves developing and maintaining backend components, implementing computational solutions, and contributing to production-ready features and technical improvements. The project is primarily developed in Ruby on Rails , with an opportunity to build on your existing Python backend experience while developing your skills in Ruby and Rails.
The cooperation may follow a hybrid model, with occasional on-site collaboration in Gliwice depending on project needs and agreed arrangements .

What We Provide in Cooperation

Long-term B2B cooperation on real-world backend projects.
Opportunity to contribute to advanced solutions for the solar energy industry .
Access to AI-powered tools and automation supporting efficient project delivery.
Knowledge sharing and access to technical consultations with experienced backend engineers.
A collaborative environment focused on technical quality, ownership, and continuous improvement.
Opportunity to propose and test new technical solutions.
Additional cooperation options , including access to selected partner services and performance-based additional remuneration, if agreed separately .
Possibility to participate in weekly onsite English classes with a native speaker , if agreed as part of the cooperation.
Pet-friendly office in Gliwice .

Interested in B2B cooperation?
If your experience matches the project requirements and you enjoy solving complex technical problems, we’d be happy to discuss the cooperation, project scope, and technical challenges with you.
Send us your CV and let’s talk about the project and B2B cooperation. ,[Development and maintenance of backend components in Ruby on Rails., Gradual transition into the project’s Ruby on Rails technology stack, building on your existing backend development experience., Implementation of computational modules supporting solar panel layout and performance calculations., Development and integration of solutions using relational databases such as PostgreSQL and MySQL., Cooperation with technical team members, PMs, architects, and other project stakeholders on production features and system design., Participation in code reviews, technical discussions, knowledge-sharing activities, and R&D initiatives., Delivery of clean, maintainable, and well-tested code., Contribution to technical improvements and solutions supporting the performance and reliability of the project] Requirements: Python, OOP, REST API, Ruby on Rails, Git, Docker, TypeScript, AI Additionally: Private healthcare, English lessons, Sport subscription, Flat structure, Small teams, International projects, Free coffee, Bike parking, Free parking, Free beverages, Startup atmosphere, Modern office.

Mid Backend Developer (Python → RoR)

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