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April 10, 2026

Senior Backend Python Developer

Senior • Remote

Krakow, Poland

Role Overview

We’re looking for a Backend Python Developer to take ownership of product development across backend systems. You’ll work across the full development lifecycle — from architecture and implementation through to deployment — partnering closely with Product and Engineering.

Must Have (Non-Negotiable)

  • Strong hands-on experience with Python in production environments

  • 8+ years of experience building scalable, high-quality software applications

  • Deep understanding of backend architecture and RESTful API design

  • Strong experience with relational databases (PostgreSQL preferred)

  • Hands-on experience with AWS

  • Proven ability to design, build, and ship end-to-end features independently

Nice to Have

  • TypeScript

  • PHP

  • Basic familiarity with JavaScript

  • Elasticsearch

  • Snowflake or modern data warehousing platforms

  • Familiarity with GCP

Key Responsibilities

Product Development:

  • Lead the development efforts, taking ownership of the entire product lifecycle from ideation to implementation.

  • Collaborate with cross-functional teams, including product managers and engineers, to deliver high-quality products.

Technical Leadership:

  • Apply expertise in technologies to drive the adoption of new architectures and design patterns for our products.

  • Mentor and guide junior developers, fostering a culture of continuous learning and improvement within the team.

Innovation and Best Practices:

  • Actively contribute to the evolution of our technical stack, ensuring it aligns with industry standards and supports scalability and maintainability.

Cross-Functional Collaboration:

  • Work closely with cross-functional teams to ensure backend systems effectively support product requirements.

Your Professional Qualifications

🌟 Core Experience & Technical Skills

  • Extensive Experience: 8+ years of professional experience as a Software Engineer delivering high-quality, scalable applications.

  • Mandatory Backend Expertise: Proven, in-depth experience with Python

  • Database Proficiency: Strong experience with relational databases, specifically PostgreSQL (Postgres).

  • Search & Indexing: Direct experience designing, implementing, and optimizing solutions using Elasticsearch.

  • Cloud Computing: Hands-on experience with AWS (mandatory), with familiarity with GCP as a bonus.

  • Data Warehouse (Nice to Have): Experience working with modern data warehousing solutions like Snowflake.

🏗️ Architecture & Design

  • Component Design: Experience with a shared component design paradigm utilizing controller-based patterns.

  • Application Implementation: Proven track record of implementing applications effectively using established style guides and detailed wireframes.

  • Backend Principles: Strong understanding of backend architecture principles and best practices for RESTful design.

📈 Development Methodologies & Teamwork

  • Agile Development: Comfortable working in Agile environments and proficient in Test-Driven Development (TDD) methodologies.

  • Collaboration: Highly team-oriented and collaborative, with the proven capacity to mentor junior team members and elevate team skill levels.

  • Leadership & Communication: Demonstrated leadership ability combined with excellent written and verbal English skills.

About Mozaiq

Mozaiq is a fully remote team with roots in the US and Eastern Europe. We build powerful, cross-functional teams that support some of the most sophisticated tech and marketing organizations in the world.

🌐 Global Family: A tight-knit, multicultural, remote-first team

💼 Meaningful Work: Support world-class brands and products

🤝 Inclusive Culture: We prioritize collaboration, clarity, and growth

Perks & Benefits

🌍 Work from anywhere

⏳ Flexible hours

🏝 Paid time off + holidays

🛫 Team offsites

🩺 Subsidised Health insurance