Python Development
StepTo's Python engineers cost $25-85/hr — 40-60% less than Western Europe or the US. AI/ML, backend APIs, data engineering, and automation with experienced Python developers.
Reviewed by Igor Gazivoda, Founder & CEO · Updated
Python Development Services
StepTo is a Belgrade, Serbia-based software company whose Python developers build AI/ML systems, data pipelines, and backend APIs for European and US clients. Working in the CET timezone, our 15–20-person engineering team delivers senior Python and AI/ML expertise at 40–60% lower cost than Western Europe or the US. Data pipelines and model code age fastest in the hands of whoever inherits them, so StepTo backs its Python team with a 95% long-term retention rate and 2.5+ years of average developer tenure.
Python has become the language of choice for AI/ML, data science, and backend development. Its versatility, rich ecosystem, and readability make it ideal for everything from machine learning models to high-performance APIs. At StepTo, our Serbian Python developers bring expertise across the full Python spectrum.
Whether you're building AI-powered applications, data pipelines, backend services, or automation tools, our developers deliver production-ready solutions. We work with modern frameworks like FastAPI and Django, ML libraries like TensorFlow and PyTorch, and LLM tools like LangChain.
Based in Belgrade, Serbia, our Python developers combine strong computer science fundamentals with practical experience. You get senior-level expertise in AI/ML and data engineering at competitive rates, with the timezone alignment for seamless European collaboration. To hire individual Python developers directly, see our Python developer hiring guide.
Python Development Services
Comprehensive Python solutions from AI to automation
AI & Machine Learning
Custom ML models, deep learning, NLP, computer vision, and AI-powered applications with TensorFlow and PyTorch.
Backend Development
Scalable REST and GraphQL APIs with Django, FastAPI, or Flask following best practices.
Data Engineering
ETL pipelines, data warehouses, analytics platforms, and big data processing with Python.
Automation & Scripting
Business process automation, web scraping, DevOps scripts, and workflow automation.
Data Science & Analytics
Statistical analysis, predictive modeling, dashboards, and business intelligence solutions.
LLM & GenAI Integration
OpenAI, LangChain, vector databases, RAG systems, and generative AI applications.
Python Technology Stack
Frameworks, libraries, and tools our Python developers master
What We Build
Python solutions across domains
AI/ML Applications
Intelligent systems that learn, predict, and automate decision-making processes.
Data Platforms
End-to-end data infrastructure for collection, processing, and analysis.
Backend Systems
High-performance APIs and services powering web and mobile applications.
GenAI Solutions
Applications leveraging large language models and generative AI.
Frequently Asked Questions
Why hire Python developers from Serbia?
Serbian Python developers offer deep expertise in AI/ML, data engineering, and backend development at 40-60% lower costs than Western Europe. Our developers are experienced with modern Python ecosystem, work in CET timezone for real-time collaboration, and have strong computer science fundamentals essential for complex Python projects.
What Python frameworks do your developers use?
For web development, we use Django for full-featured applications and FastAPI for high-performance APIs. For ML/AI, we work with TensorFlow, PyTorch, and Scikit-learn. For data engineering, we use Pandas, Apache Airflow, and various ETL tools. We also have expertise in LangChain for LLM applications.
Can you build AI and machine learning solutions?
Yes, AI/ML is one of our core strengths. Our Python developers build custom ML models, deep learning systems, NLP applications, computer vision solutions, and LLM-powered applications. We handle the full ML lifecycle from data preparation to model deployment and monitoring.
Do you work with LLMs and generative AI?
Yes, we have extensive experience with LLM integration using OpenAI APIs, LangChain, and vector databases like Pinecone and Weaviate. We build RAG systems, chatbots, document processing pipelines, and custom AI assistants tailored to your business needs.
What about data engineering and ETL?
We build robust data pipelines using Python with tools like Apache Airflow for orchestration, Pandas for transformation, and various connectors for data sources. We design data warehouses, implement real-time streaming, and create analytics platforms.
How do you handle ML model deployment?
We deploy ML models using containerization (Docker), cloud services (AWS SageMaker, GCP Vertex AI), and custom FastAPI endpoints. We implement MLOps practices including model versioning, A/B testing, monitoring, and automated retraining pipelines.
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