Senior Backend Developer

Python

Senior Backend Developer

Python
-, Łódź +4 Locations

Mozaiq

Full-time
B2B
Senior
Remote

Job description

Role Overview

As a Senior Backend Developer, you will spearhead the development of Practice Growth products. Your role involves end-to-end ownership of the development lifecycle, collaborating with cross-functional teams to deliver seamless user experiences. Bring your technical leadership to mentor junior developers and contribute to the continual evolution of our technical stack.


Your Area of Focus

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, designers, and engineers, to deliver high-quality and user-friendly 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:

  • Stay abreast of industry trends and advancements, incorporating the latest technologies and best practices into our development processes.

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

Cross-Functional Collaboration:

  • Work closely with UX/UI designers to translate design concepts into responsive and intuitive user interfaces.


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 the core backend languages: Python and Java.

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

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

●  Frontend Development (Highly Desired): Experience with Javascript and using functional frameworks such as React.js or Vue.js.

Note: React is specifically called out as a 'Nice to Have' but is included here due to its strong market relevance.

●  Cloud Computing: Hands-on experience with at least one major cloud platform, with AWS being mandatory, and 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

Tech stack

    English

    C1

    Python

    master

    Java

    advanced

    PostgreSQL

    advanced

    RESTful API

    advanced

    Agile

    advanced

    JavaScript

    advanced

    Snowflake

    nice to have

Office location

Published: 26.01.2026

Senior Backend Developer

Summary of the offer

Senior Backend Developer

-, Łódź
Mozaiq
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