Senior Python Developer

Miejsce pracy: Wrocław

Technologies we use

Expected

• Python
• FastAPI
• Django
• Flask
• MySQL
• Redis
• Docker
• Git
• AWS
• Google Cloud Platform
• Microsoft Azure
• MongoDB

About the project

Platform for smartwatches and tablets used by retail and hospitality businesses across Europe; connected-device ecosystem where devices, customers and integrations grow and require scalable backend and reliable communication between devices and services.

This is how we organize our work

This is how we work

• you focus on a single project at a time
• you have influence on the technological solutions applied
• you have influence on the product
• you focus on product development
• agile

Team members

• backend developer
• frontend developer
• mobile developer
• technical leader
• architect
• devOps
• project manager

Your responsibilities

• Build and develop backend features in Python.
• Improve the performance and reliability of services that support smartwatches, tablets and mobile communication.
• Investigate and fix connectivity issues, including delays, unstable device connections and TCP disconnects.
• Maintain and develop the communication layer between devices and backend services.
• Build and support integrations with external customer systems.
• Work with MQTT communication, including QoS settings, retained messages and broker configuration.
• Write clean, maintainable code and follow good engineering practices.
• Take part in code reviews and write automated tests to maintain strong code quality.
• Work closely with the Tech Lead and Android Developers on product and technical decisions.
• Help improve backend architecture as the platform, number of devices and customer integrations grow.

Our requirements

• At least 4-5 years of commercial experience in backend development.
• Proven experience designing and building distributed systems, cloud-based applications or scalable backend services.
• Strong Python skills and hands-on experience with FastAPI, Django, Flask or a similar framework.
• Experience working with relational databases, especially MySQL, and non-relational databases, especially Redis.
• Good knowledge of MQTT, including QoS, retained messages and broker configuration with tools such as Mosquitto, HiveMQ or EMQX.
• Solid understanding of networking concepts, including TCP/IP, routing and load balancing.
• Experience with Docker and Git.
• Experience working in a cloud environment: AWS, GCP or Azure.
• Strong focus on clean code, automated testing, code quality and maintainable solutions.
• Technical university degree in Computer Science, Software Engineering or a related field.
• English at minimum B2 level, allowing comfortable day-to-day communication.
• Openness to hybrid work from the office (2-3 days per week) - it is important because the whole team is based in Wrocław.

What we offer

• Work model: hybrid in Wrocław (2-3 days per week)

This is how we work on a project

• code quality measures
• code review
• Continuous Integration
• test automation

Benefits

• sharing the costs of sports activities

Recruitment stages

• Phone call or online meeting with Recruiter - 30 minutes
• Technical interview - 1.5-hour Microsoft Teams interview with the Tech Lead
• Final stage - 1.5-hour in-person interview with the CEO in the office in Wrocław
• Decision and feedback

KUBOThe company provides devices and subscription-based infrastructure for a connected-device ecosystem.