Senior Automation Tester in Python

We are seeking a highly hands-on Senior Automation Tester who can architect and scale enterprise-grade test automation frameworks across data platforms, APIs, and cloud native systems.

Responsibilities

• Own the design and evolution of a scalable, modular, metadata driven test automation framework supporting data pipelines, APIs and backend services, and end to end data product validation
• Enable plug and play components, parallel execution, environment isolation, and deterministic runs
• Build reusable frameworks supporting SQL based assertions, reconciliation, schema validation, and data contracts
• Drive adoption by making frameworks easy to integrate into existing pipelines
• Design tests for schema drift, backward incompatibility, late arriving data, and partial failures
• Implement row, aggregate, and hash based reconciliation, along with incremental and backfill validation
• Integrate and extend tools like Great Expectations and Soda to build custom validations for accuracy, completeness, uniqueness, and timeliness
• Expose quality metrics, SLAs, and test outcomes through dashboards
• Embed testing into pipelines through pre merge gates, release blockers, and integration with GitHub Actions, Jenkins, or similar tools
• Define strategies for synthetic data generation, masking, anonymization, and deterministic datasets for repeatable testing
• Design and execute pipeline and query performance benchmarks, concurrency and stress testing, and data skew analysis
• Automate checks for PII or PHI exposure, encryption, access control, and data retention requirements

Requirements

• 5+ years of experience in Python automation test framework development
• Strong background in SQL and data testing
• Expertise in automation testing and quality engineering
• Skills to define and implement automation roadmaps for data engineering and document intelligence projects
• Understanding of ETL and streaming validation at scale, including window based and time based correctness checks
• Familiarity with CI/CD and DataOps practices to enforce quality gates before production deployment
• Capability to analyze production data issues, reduce flaky tests, and drive root cause fixes
• English proficiency at B2 level or higher

Nice to have

• Familiarity with DBT and CI/CD (DevOps) practices

Benefits

We gather like-minded people:

• Top tech minds driving innovation in AI, cloud and digital platform modernization
• Supportive team and agile, startup-like culture
• Hybrid by design mode and opportunity to work remotely within Poland
• Chance to work abroad for up to 60 days annually
• Business-driven relocation opportunities

We provide growth opportunities:

• Career development programs
• Thought leadership, mentoring, soft skills and well-being programs
• Certification (Anthropic, Gemini, GCP, Azure, AWS)
• English classes

We cover it all:

• Stable pay
• Participation in the Employee Stock Purchase Plan with a 15% discount
• Benefits package (health insurance, multisport, shopping vouchers)
• Referral bonuses up to $2,000
• Offices featuring entertainment and relaxation zones, table tennis and football, free snacks, coffee and more
• Corporate, social and well-being events

Please, note:

• Benefits listed above are available to employees only
• We are open for working with Contractors. Terms of B2B cooperation agreements are agreed individually
• We will reach out to selected candidates exclusively