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Backend Engineer

Lumen Global
format:Remotecompany:Product
pythonpytestfastapirest-apiwebsocketspostgresqlsqlalchemylinuxgit
pandas
englishB1
experience2+ years
domainFintech
> full description

We are looking for a skilled Middle Python Developer to join our core team. You will play a key role in developing and optimizing our high-load Trading Bot, ensuring seamless integration with cryptocurrency exchanges and supporting the continuous growth of our fintech operations.

✨ Our Core Values

Proactiveness | Responsibility | Exploration of Ideas | Engagement | Solutions, not Problems | Teamwork

🔧 Responsibilities:

  • Develop & Maintain: Write clean, high-quality, and scalable Python code for fintech and crypto trading systems.
  • Architecture: Participate in architectural discussions and contribute to technical decisions for the trading bot’s evolution.
  • Quality Assurance: Perform thorough code reviews and maintain high test coverage using Pytest.
  • Optimization: Fine-tune applications for maximum performance, reliability, and low-latency execution.
  • Ownership: Troubleshoot complex technical issues and take full responsibility for the features you build.
  • Collaboration: Work closely with cross-functional teams to design and implement new trading strategies and features.

🔑 Required Skills:

  • 2+ years of hands-on experience with Python 3 (including advanced features and Pytest).
  • Strong Web Framework Skills: Practical experience with FastAPI.
  • Testing Excellence: Solid experience with unit testing to ensure code reliability and high quality.
  • API Integration: Proven ability to integrate various APIs and external services (REST, WebSockets, etc.), which is crucial for our trading operations.
  • Solid Foundations: Deep understanding of OOP and class design, microservices design.
  • Database Management: Deep knowledge and Experience with PostgreSQL and ORM like SQLAlchemy.
  • System Knowledge: Comfortable working with Linuxbased environments.
  • Tools: Proficiency in Git and experience with Jira for task management.
  • English: At least Intermediate level (for technical documentation and communication).
  • Mindset: Critical thinking and a strong sense of feature ownership.

🚀 Nice to Have:

  • Experience or understanding of Forex/Crypto trading, Cryptocurrency market mechanics and exchange APIs, Order management and execution logic;
  • Knowledge of tools for Data Processing & Analytics: NumPy, Pandas, etc.

What We Offer 💼

  • Work-Life Balance: 20 days of paid vacation and 10 days of paid sick leave annually (no medical certificate required). 🏖️
  • Annual Benefit Cafeteria: A dedicated yearly budget for your personal growth and well-being. Spend it on sports, wellness, healthcare, or professional training — you choose what matters most. 🧘🎓
  • Equipment Allowance: We value the tools you use. To cover the wear and tear of your own hardware, we provide a monthly compensation for using your personal equipment. 💻
  • Growth & Feedback: Structured annual Performance Reviews to support your career progression and discuss your development. 📈
  • Social & Team Fun: Engaging online team-building events with food and drinks delivery — we stay connected no matter where we are. 🍕🥂
  • Full Financial Support: Comprehensive FOP (3rd group) tax compensation and accounting support. 📑

Ready to redefine the landscape of trading and investments? Join our mission and bring your technical expertise to a team that’s moving as fast as the market! 🚀

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