Denys T.

I am a Python developer focused on building reliable backend systems, trading algorithms, and business process automation. My engineering approach is based on three core principles: financial accuracy, data security, and stability under high load.

I specialize in developing systems that must perform predictably in real production environments: integrating with external APIs, handling strict limits, performing financial calculations, and meeting high fault-tolerance requirements.

How I Can Be Useful
Trading Bots and Financial Systems Development

• Designing and implementing trading systems for Binance (Spot / Convert API).

• Implementing strategies based on technical indicators: RSI, Moving Averages, and volatility-oriented TP/SL.

• Architectural approach instead of “scripts”: state management, fault tolerance, and scalability.

API Integration and Monitoring

• Working with external APIs while considering rate limits and instability.

• Implementing real-time monitoring via Telegram to track system status, errors, and critical events.

• Detailed logging for rapid problem diagnosis.

Automation and Data Management

• Building modular architectures that are easy to extend and maintain.

• Working with file systems, state persistence, and backups.

• Automating routine processes and business logic.

My Technical Strengths (Proven in Real Projects)
Reliability

• Three-level error-handling system.

• Protective mechanisms like Circuit Breakers to prevent cascading failures.

• Designing systems to account for unstable external services.

Accuracy

• Using Decimal for all financial calculations.

• Eliminating rounding errors inherent to floating-point arithmetic.

• Focusing on data correctness, not just execution speed.

Code Quality

• Code covered by tests (unit tests, property-based testing).

• Strict typing and contract verification.

• Detailed, structured logging for every stage of system execution.

• Documentation understandable to other developers.

Experience Beyond Personal Projects

• Contributing to open-source projects.

• Quickly understanding existing code, following established standards, and collaborating in a team.

• Implementing improvements that enhance system stability and usability.

Technology Stack

• Languages: Python 3.8–3.13, C#

• Libraries and tools: Pandas, Pytest, MyPy (strict typing), Telegram API, .NET

• Data handling: JSON, file systems, state persistence, backups

• Approaches: modular architecture, fault-tolerant design, automated testing, logging & monitoring, OOP

Why Choose Me
I don’t just write code—I deliver products ready for real “live” conditions (production / mainnet). Every project comes with clear documentation, architectural explanations, and guides, enabling smooth handover or future scaling.

My focus is on reliable systems you can trust.