Senior Backend Developer (Python)

TL;DR

Senior Backend Developer (Python): Building an internal Ads Optimization Engine that integrates with tracking platforms and ad network APIs with an accent on rule engine development, database performance, and secure data handling. Focus on designing scalable backend services, optimizing high-load traffic data, and collaborating on complex business logic for ad campaign automation.

Location: Remote or Hybrid (Prague, Warsaw)

Company

hirify.global is an adtech company focused on performance marketing and ad optimization solutions.

What you will do

• Develop and maintain the backend for the Admin Panel, including rules, traffic sources, and logs.
• Integrate with tracking platforms like Voluum and various external ad network APIs.
• Build a robust rule engine with configurable conditions and scheduled execution.
• Design database schemas, manage secure credential storage, and implement logging.
• Develop REST APIs for the frontend and maintain comprehensive API documentation.
• Collaborate closely with the tech lead on architecture and product stakeholders on business logic.

Requirements

• Strong proficiency in Python and modern backend frameworks like FastAPI or Django.
• Solid experience with PostgreSQL, including schema design, migrations, and query optimization.
• Experience with Redis and background job or task processing systems.
• Strong experience integrating with external APIs, including authentication and rate limit handling.
• Understanding of media buying metrics such as ROI, CR, and CPA.
• Experience with Git, Docker, CI/CD, and pytest.

Nice to have

• Experience with Node.js or TypeScript.
• Experience with traffic trackers like Voluum, Binom, Keitaro, or RedTrack.
• Knowledge of ad network APIs like PropellerAds, RichAds, or Clickadu.

Culture & Benefits

• 20-28 working days of vacation plus additional paid leave for family events.
• 10+3 sick days and flexible work start times.
• Access to hirify.global Academy courses for professional growth.
• Modern office spaces in Prague and Warsaw.
• Fully-paid participation in professional conferences.