Senior Python Developer

Senior Python Developer

About CloudSigma

CloudSigma is a product-driven cloud infrastructure company delivering IaaS, CaaS, and PaaS services through a proprietary platform developed entirely in-house. We operate globally and combine the stability of an established company with the flexibility and impact of a strong engineering-led culture.

Our development team values clean architecture, SOLID principles, collaboration, and technical curiosity. Engineers here have real influence over product direction and technical decisions.

About the Role

We are looking for a Senior Python Developer to join our core Development team. You will work on a large-scale cloud platform covering web applications, APIs, and backend services, with opportunities to expand into system-level and infrastructure-related development if that interests you.

This role suits developers who enjoy owning features end-to-end, working close to the product, and gradually deepening their understanding of how cloud platforms work under the hood.

What You’ll Be Doing

• Develop and maintain backend services and APIs in Python
• Design and implement RESTful APIs used by both internal systems and customer-facing applications
• Contribute to our microservices-oriented architecture and ongoing platform evolution
• Work with asynchronous processing and task queues 
• Implement and integrate authentication, authorization, and SSO solutions
• Collaborate on architectural decisions and improve code quality following SOLID principles
• Participate in code reviews, debugging, and technical discussions
• Optionally (depending on interest): work closer to infrastructure, virtualization, and system-level components
  
  

What We’re Looking For

Core Requirements

• 5+ years professional Python development experience
• Strong Python fundamentals and clean coding practices
• Experience with web backends and REST API development
• Familiarity with microservices or distributed systems
  Experience with asynchronous processing (Celery, RabbitMQ, Kafka, Redis, or similar)
• Understanding of authentication & authorization concepts (OAuth, JWT, SSO)
• Solid Linux knowledge and comfort working in server environments
• Experience with Git and collaborative development workflows
• Good communication skills in English
• Curiosity, problem-solving mindset, and willingness to learn beyond your comfort zone
  

Strong Advantages (Not Required)

• Experience with Django and Frontend development
• Exposure to system-level Python development
• Familiarity with virtualization technologies (KVM, QEMU, libvirt)
• Knowledge of networking concepts (TCP/IP, firewalls, routing)
• Experience with containerization (Docker, K8s)
• DevOps experience (CI/CD, automation, infrastructure tooling)

Our Approach to AI

We see AI as a productivity tool, not a replacement for engineering thinking. You’re encouraged to use AI to:

• Speed up repetitive tasks
• Improve research and problem analysis
• Focus more time on architecture, design, and complex problem-solving

You’ll have access to modern AI tools and the freedom to use them pragmatically.

What We Offer

• 💰 Competitive salary and benefits
• 🌍 International, product-focused engineering environment
• 📍 Modern office in a central city location
• 🏡 Hybrid work model
• 🏥 Additional health insurance
• 💪 MultiSport card
• 💻 Business laptop and mobile phone
• 🤖 Access to cutting-edge AI tools
• 🍎 Snacks, food vouchers, and in-office perks
• 🚀 Long-term growth and learning opportunities across the full stack
  
  

How to Apply

Send your CV and a short introduction to:

📧 careers@cloudsigma.com

Optional but appreciated:

• GitHub/GitLab profile
• Examples of backend, infrastructure, or system-related work
  
  

In Short

We’re looking for a strong Python developer who:

• Builds clean, scalable backend systems
• Thinks in APIs and services
• Is curious about how cloud platforms work
• Wants to grow technically while working on real infrastructure products
  
  

If that sounds like you - we’d love to talk!