Senior Python Engineer Backend & Cloud GCP

Sublime Warszawa 2026-10-27

You are the perfect fit if you have:

• 5+ years of hands-on software engineering experience, including 3+ years of commercial backend development in Python (APIs/services)

• Practical experience deploying and running applications in the cloud (GCP preferred; AWS or Azure also welcome)

• Hands-on experience with CI/CD and containers (Docker; GitLab CI, GitHub Actions, Cloud Run or similar)

• Experience in code review from a system-wide perspective and in setting engineering standards

• Communicative Polish and English (B2+)

You will earn extra points for:

• Familiarity with our data stack (BigQuery, Airflow, dbt, Apache Superset) and SQL

• Experience with multi-tenant SaaS (e.g. Postgres Row-Level Security)

• Familiarity with FastAPI and React/TypeScript

• Experience with observability and cloud cost optimization

• A security mindset (IAM, secrets, client data isolation)

• Experience with LLMs in production (evals, prompt management)

• Experience with Apache Superset or other BI tools

• Experience working in a startup or small team

About us

We are a young, fast-growing SaaS company (80% YoY) specializing in Data and Analytics Engineering. Our product, Sublime, is a multi-tenant analytics platform for e-commerce, DTC and subscription businesses. We currently provide services to clients from Poland and the USA. By joining us, you will gain a unique opportunity to shape our technology, product and way of working.

Our platform runs on Google Cloud Platform, built with tools such as BigQuery, Airflow, dbt, Apache Superset, Terraform and GitLab CI. The Sublime app (React + FastAPI) delivers AI-generated insights powered by Anthropic Claude, and we use Claude Code in our everyday development.

We would like to offer you:

Salary up to 30,000 PLN net + VAT per month (B2B)
Paid time off, also on a B2B contract
Hybrid work: 1 day a week in our office in an old house in the city center (Old Mokotów), flexible working hours
Startup atmosphere and real influence on our technology choices
Small, hands-on team with zero bureaucracy

,[ Work side by side with our 3 founders, each with 10+ years of experience in building scalable data products or scaling up startups , Build and maintain the integration between our web application and Google Cloud, so that processes such as client onboarding and environment setup run automatically from the app , Contribute to architecture decisions and code reviews, especially where the application meets the cloud , Automate our engineering processes (CI/CD, testing, deployments, client provisioning) and turn manual operational work into product features , Develop and maintain our Google Cloud infrastructure (IAM, security, reliability and cost) using Terraform , Develop our stack hands-on every day] Requirements: Python, Cloud, GCP, AWS, Azure, CI/CD, Docker, GitLab CI, GitHub Actions, BigQuery, Airflow, dbt, Apache, SQL, SaaS, PostgreSQL, Security, FastAPI, React, TypeScript, IAM, LLMs, BI Tools: Jira, GitLab, GIT, Agile, Scrum. Additionally: Flat structure, Small teams, Training budget, Free coffee, Bike parking, Shower, Free parking, In-house trainings, Modern office, Startup atmosphere, No dress code.