Senior Backend / Data Engineer (Python/Django)

Our requirements

• At least 4+ years of commercial experience in backend or data engineering, including work with production-grade data pipelines or Big Data systems.
• Strong programming skills in Python, including solid hands-on experience with Django.
• Hands-on experience designing and building data ingestion / ETL-ELT pipelines using both file-based and API data sources.
• Experience working with a cloud data warehouse, ideally Snowflake.
• Working knowledge of AWS, particularly S3 and Secrets Manager.
• Experience with workflow orchestration tools such as Airflow / AWS MWAA or equivalent.
• Strong understanding of data validation, data quality, error handling, and production reliability.
• Experience designing or working with REST APIs.
• Understanding of data security and compliance requirements, including PII handling, audit trails, and data retention policies.
• Experience using AI coding assistants or agentic workflows as part of day-to-day software development.
• Excellent communication skills and the ability to clearly document technical decisions for both engineering and operational stakeholders.
• Excellent English communication skills (C1 level), both written and spoken.

Optional

• Experience with Snowflake and/or Databricks.
• Experience with dbt or similar data transformation tools.
• Experience with Kafka or other streaming technologies.
• Familiarity with structured data-exchange formats.

Your responsibilities

• Design and develop scalable data ingestion pipelines for file-based and API data sources using Python.
• Build and maintain backend components responsible for data processing, validation, and integration.
• Design and develop REST APIs using Python and Django.
• Implement robust data quality, validation, and error-handling mechanisms.
• Design and maintain data models and work with modern cloud data platforms and warehouses.
• Develop and maintain automated data-quality tests.
• Work with cloud services and workflow orchestration tools such as Airflow.
• Contribute to CI/CD pipelines and application environment configuration.
• Ensure solutions are reliable, maintainable, scalable, and production-ready.
• Write and maintain technical documentation and operational runbooks.
• Collaborate with engineers and stakeholders to translate business and technical requirements into effective solutions.
• Use AI-assisted development tools and workflows as part of day-to-day software delivery.

About the project

This is how we organize our work

Division of working time

• 80%

  New features
• 5%

  Maintenance / Bug fixing
• 5%

  Client support
• 5%

  Document writing
• 5%

  Meetings

Important:

What we offer

• Work in a supportive team of passionate enthusiasts of AI & Big Data.
• Engage with top-tier global enterprises and cutting-edge startups on international projects.
• Enjoy flexible work arrangements, allowing you to work remotely or from modern offices and coworking spaces.
• Accelerate your professional growth through career paths, knowledge-sharing initiatives, language classes, and sponsored training or conferences, including a partnership with Databricks, which offers industry-leading training materials and certifications.
• Choose your preferred form of cooperation: B2B or a contract of mandate, and enjoy 20 fully paid days off.
• Participate in team-building events and utilize the integration budget.
• Celebrate work anniversaries, birthdays, and milestones.
• Access medical and sports packages, eye care, and well-being support services, including psychotherapy and coaching.
• Get full work equipment for optimal productivity, including a laptop and other necessary devices.
• With our backing, you can boost your personal brand by speaking at conferences, writing for our blog, or participating in meetups.
• Experience a smooth onboarding with a dedicated buddy, and start your journey in our friendly, supportive, and autonomous culture.

Development opportunities we offer

• assistance in preparation to public speeches
• conferences abroad
• conferences in Poland
• development budget
• external training
• industry-specific e-learning platforms
• intracompany training
• soft skills training
• substantive support from technological leaders
• support of IT events
• technical knowledge exchange within the company
• time for development of your ideas

Benefits

• sharing the costs of sports activities
• private medical care
• sharing the costs of foreign language classes
• sharing the costs of professional training & courses
• remote work opportunities
• flexible working time
• fruits
• integration events
• no dress code
• video games at work
• birthday celebration
• employee referral program
• Reimbursement for prescription glasses or contact lenses

Recruitment stages

• 1.
  Let's get to know each other (45 min)
• 2.
  Technical Interview (1 h)
• 3.
  Management Interview (1 h)

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