Senior Python Engineer – AI-Driven Backend in SaaS

b3consultingpoland; Kraków; Hybrid; PLN 140,000 - 190,000; Full time

Benefits offered by this job

Health and sports benefits

Speed Coaching

Sports training and team events

Development-focused meetups

Scandinavian culture-inspired work

Job summary

b3consultingpoland is seeking a Senior Python Engineer in Kraków to design and build scalable backend services within a SaaS environment. You will work with a range of technologies, APIs, and AI-assisted workflows in an international team.

Responsibilities include implementing statistical algorithms, collaborating with product teams, and resolving production issues while adopting AI tools to drive new features.

Qualifications

• Strong Python fundamentals and Django experience.
• Experience with PostgreSQL and relational databases.
• Experience architecting scalable REST APIs.
• Proficiency with AI coding assistants used daily.
• Fluent professional English for international collaboration.
• Ability to work with statistics (regressions, distributions, p-values) with domain experts.

Responsibilities

• Design, develop, and expand scalable backend services, modules, and REST APIs within a SaaS architecture.
• Implement, verify, and continuously test analytical and statistical algorithms to guarantee full correctness and output accuracy.
• Analyze business and technical requirements in close collaboration with product teams, engineering peers, and Tech Leads.
• Diagnose, analyze, and efficiently resolve technical issues and production bugs.
• Actively adopt AI developer tools in daily workflows and propose concepts for new AI-powered product features.

Skills

Python fundamentals

Django

PostgreSQL

REST APIs

AI coding assistants

English

Statistics

Tools

Cursor

GitHub Copilot

Claude Code

Job description

b3consultingpoland is seeking a Senior Python Engineer in Kraków to design and build scalable backend services within a SaaS environment. You will work with a range of technologies, APIs, and AI-assisted workflows in an international team.

Responsibilities include implementing statistical algorithms, collaborating with product teams, and resolving production issues while adopting AI tools to drive new features.