Senior Backend Engineer — APIs, Analytics & AI-Driven SaaS

beqom; Kraków; On-site; PLN 180,000 - 260,000; Full time

Job summary

beqom is seeking a senior backend engineer to design, build, and optimize the heart of our SaaS platform. You will implement robust APIs, work on analytical features, and help ensure code quality and scalability across global customers.

You will mentor engineers, collaborate with cross-functional teams, and continuously improve testing, automation, and AI-assisted development workflows in a fast-paced environment.

Qualifications

• Senior-level software engineering with backend experience.
• Strong Python fundamentals.
• Hands-on Django experience.
• Experience with PostgreSQL and migrations.
• Experience designing REST APIs at scale.
• Solid testing practice with a focus on numerical/analytical correctness.

Responsibilities

• Build backend features, services, and APIs, and improve existing ones.
• Analyse and understand functional and technical requirements, collaborating with internal and external teams as needed.
• Work on statistical and analytical features end-to-end — implementation, testing, and verification that the output is correct.
• Review pull requests from other engineers, including code produced with AI assistance.
• Maintain applications and perform code and infrastructure upgrades.
• Handle data migrations, backfilling, and large dataset operations with care.
• Collaborate with frontend developers, product managers, the Tech Lead, and other stakeholders to deliver integrated solutions.
• Mentor and coach other Software Engineers, helping them discover new technologies and improve their development practices.
• Troubleshoot issues reported by users and provide timely resolutions.
• Use AI coding tools in daily workflow, and help the team improve how we use them.
• Contribute ideas and prototypes for AI-powered product features.
• Share knowledge and contribute to a positive, collaborative team culture.

Skills

Senior Backend

Python

Django

PostgreSQL

REST APIs

Testing

Job description

beqom is seeking a senior backend engineer to design, build, and optimize the heart of our SaaS platform. You will implement robust APIs, work on analytical features, and help ensure code quality and scalability across global customers.

You will mentor engineers, collaborate with cross-functional teams, and continuously improve testing, automation, and AI-assisted development workflows in a fast-paced environment.