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Senior Python Developer with Spark

Senior Python Developer with Spark

Custom Field 1:  Backend Development
Custom Field 3:  Backend Development
Country/Region:  PL
Date:  Jul 22, 2025
Location: 

Kraków, PL, 30-302 Łódź, PL, 90-118

Working place:  Hybrid

We are seeking a skilled and passionate Python Developer with a strong foundation in Object-Oriented Programming (OOP) and proven experience in building scalable microservices. The ideal candidate should be able to design, develop, test, and maintain robust backend systems. Exposure to PySpark and big data processing is a plus. 

 

 

Key Responsibilities:

  • Design and implement scalable, reliable, and maintainable microservices using Python. 
  • Apply object-oriented principles and design patterns to build modular and reusable components. 
  • Collaborate with cross-functional teams to define, design, and ship new features. 
  • Develop APIs and services for data-intensive applications. 
  • Write clean, efficient, and testable Python code. 
  • Optimize applications for maximum performance, scalability, and security. 
  • Conduct code reviews, unit testing, integration testing, and assist in deployment. 
  • Work with CI/CD pipelines for automated testing and deployment. 
  • Document design decisions, system architecture, and code functionality. 
  • Work with PySpark to develop distributed data processing pipelines. 

 

 

Requirements:

  • 4+ years of professional experience in Python development.
  • Strong understanding and hands-on experience with Object-Oriented Programming (OOP) and design patterns.
  • Proven experience in designing and implementing microservices architectures.
  • Proficiency in RESTful API design and web service development.
  • Experience with FastAPI or similar Python web frameworks.
  • Familiarity with observability tools and practices (e.g., Grafana).
  • Hands-on experience with PySpark and distributed data processing.
  • Solid grasp of system performance, scalability, and reliability principles.
  • Availability to work from the office twice a week.
  • Candidates from Łódź: openness to travel to the client’s office in Kraków for three days every two months.

 

 

Nice to have:

  • Experience with CI/CD pipelines and related tools (e.g., Jenkins, GitLab CI).
  • Familiarity with Docker and version control systems like Git.
  • Understanding of monitoring, logging, and performance tuning techniques.
  • Exposure to Agile/Scrum development methodologies.
  • Strong problem-solving, debugging, and communication skills

 

 

We offer:

  • Working in a highly experienced and dedicated team
  • Competitive salary and extra benefit package that can be tailored to your personal needs (private medical coverage, sport & recreation package, life insurance, etc.)
  • Contract of employment or B2B contract
  • On-line training and certifications fit for career path
  • Social events
  • Access to e-learning platform

 

 

 

We are GFT Poland. WE KNOW how to tackle complex issues with innovative approach to deliver the highest value. Our reputation has been built around one simple rule: we do not overpromise, WE DELIVER. We deliver to our employees, clients and partners. WE GROW as you grow, so investing in you is our business strategy. Caring for each other is our priority. WE CARE who you are, what you need, how you feel. WE CARE to smile, have fun and develop as human beings. 

Why Choose GFT?

  • A culture of top performance
  • Deep tech IT engineering & consulting 
  • 1,400 skilled & top-class experts 
  • 77% of the team are regular/senior 
  • Great Place To Work
  • Products that contribute to a sustainable world
  • Competitive salary and benefits 
  • Ambitious projects, trainings and tools you need to flourish
  • Google Cloud Partner of the Year - for going above and beyond for customers

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