(803) Senior Python Developer - L3 Support (SRE/Python + Unity-integration)

Altoros; Warszawa; On-site; PLN 100,000 - 130,000; Full time

Job summary

Altoros, a leading IT services provider in Warsaw, is seeking a Senior Python Developer with over 4 years of experience in backend systems. The ideal candidate will have deep expertise in Django and Django REST Framework, strong PostgreSQL skills, and hands-on experience with Google Cloud Platform. Responsibilities include leading incident response, fixing backend bugs, and optimizing application performance. We offer an innovative working environment with exciting challenges.

Qualifications

• 4+ years of experience in building and maintaining production-grade backend systems.
• Deep expertise in Django and Django REST Framework.
• Strong command of PostgreSQL and complex query optimization.
• Hands-on experience with Google Cloud Platform services.

Responsibilities

• Lead incident response and ensure timely triage and resolution.
• Investigate and fix backend bugs in the Django application.
• Optimize performance of the application and PostgreSQL database.

Skills

Senior Python Development

Django

PostgreSQL

Google Cloud Platform

English (B2 Level)

Tools

Django REST Framework

GCP

Job description

Altoros - a leading IT services provider is looking for a Senior Python Developer.

Responsibilities

• Lead incident response (primary), ensuring timely triage and resolution within agreed SLAs
• Perform root cause analysis (RCA)
• Investigate and fix backend bugs in the Django application, including post-launch and integration-related issues
• Tune infrastructure and adjust system configurations to improve reliability and stability
• Resolve dependency compatibility issues across application and infrastructure layers
• Optimize performance of both the application and PostgreSQL database — query tuning, indexing, caching, and connection management

Non-Core (but inevitable)

• Observability gaps remediation
• Runbook refinement
• Minor DevOps improvements

Requirements

• Senior Python Backend Developer - 4+ years of commercial experience building and maintaining production-grade backend systems. Complex systems support
• Django & DRF - Deep expertise in Django and Django REST Framework. Proven experience designing, documenting, and scaling REST APIs, handling authentication, serialization, pagination, and custom middleware
• PostgreSQL - Strong command of PostgreSQL. Comfortable with schema design, complex query optimization, indexing, transactions, and ORM best practices (Django ORM / raw SQL)
• Google Cloud Platform - Hands‑on experience with GCP, specifically deploying and managing services on Cloud Run and working with managed databases via Cloud SQL. Familiarity with GCP logging, monitoring, and basic CI/CD is expected
• Excellent interpersonal skills with the ability to directly influence requirement and work independently as required; proactivity
• B2 level of English or higher

Nice To Have Requirements

• Experience with DevOps practices and tools
• Admin panel development history using Django
• Experience with HTML, CSS, TS / JS

Benefits

We are hoping for fruitful collaboration.

Join Our Team!