Senior/Mid Software Engineer (Python)

Do you enjoy working with data, APIs, and real system integrations? Are you a Python engineer who likes to understand how systems really work, not just write code?

At KUBO, we are looking for mid-level and senior software engineers to support digital aviation solutions. You will work on system integration, data transformation, and backend services used in complex, real-world environments.

Key responsibilities

• Develop and maintain backend services in Python.

• Design and implement web services and APIs.

• Integrate Java-based applications with Python solutions.

• Design new database structures and work with PostgreSQL.

• Transform, migrate, and process data between systems (ETL).

• Participate in system design, integration, and testing.

• Collaborate with international teams and stakeholders.

Ideal candidate profile

• Bachelor’s degree in engineering, computer science, data science, mathematics, or similar. 

• 3+ years (mid-level) or 5+ years (senior) of professional software development experience.

• Strong proficiency in Python.

• Experience in building and consuming web services / APIs (REST, gRPC, etc.).

• Solid knowledge of relational databases, especially PostgreSQL.

• Experience with data processing, transformation, and ETL workflows.

• Experience with at least one other modern language (Java is a strong plus).

• English proficiency.

Nice to have:

• Experience with AWS and/or VMware Tanzu.

• Experience with containerization (Docker, OCI).

• Experience with frontend development.

Conditions

Location: Gdańsk or Warsaw

Work Model: Hybrid (3 days per week in the office)

Employment Type: Regular employment (Umowa o pracę)

Salary: Depends on your experience and seniority level

Recruitment steps

• Initial call with a KUBO recruiter

• 2 interviews with the client

• Decision and feedback