Senior Quantitative Developer

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Kolomolo

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11 - 50 employees

Based in Stockholm Sweden and Krakow, Poland, Kolomolo is a leading IT consultancy firm specialized in cloud computing, AI, and IoT, proudly partnering with AWS. Our mission, "To be leaders in digital modernization," drives us to help companies leverage cutting-edge technologies through the expertise of our talented team.

📋 Description

• Design and develop quantitative models and trading algorithms. • Build and optimize backtesting and research frameworks. • Process and analyze large-scale market data across multiple asset classes. • Develop portfolio optimization and risk management solutions. • Integrate trading infrastructure with brokerage and execution platforms. • Collaborate with software engineers, quantitative researchers, and stakeholders to deliver production-ready trading solutions. • Improve performance, scalability, and reliability of quantitative systems.

🎯 Requirements

• 5+ years of commercial experience in Python development. • Proven experience in quantitative finance and algorithmic trading. • Strong knowledge of Python data and quantitative libraries such as: Pandas, NumPy, Polars, VectorBT, Backtrader, QuantConnect LEAN. • Experience with: Portfolio optimization, Risk management, Backtesting frameworks, Monte Carlo simulations, Walk-forward analysis. • Practical experience processing market data for equities, futures, forex, and cryptocurrency markets. • Experience with machine learning frameworks such as XGBoost, LightGBM, or PyTorch. • Strong knowledge of PostgreSQL, TimescaleDB, Docker, Git, and CI/CD practices. • Experience integrating trading platforms using FIX Protocol, Interactive Brokers, Alpaca, or LMAX. • Understanding of institutional trading systems, including OMS, EMS, and low-latency trading environments.

🏖️ Benefits

• Competitive salary and benefits. • Career development opportunities in a growing tech company. • Continuous learning culture: mentorship, internal training, and certifications. • Flexible, agile work environment (remote, hybrid, or on-site in Kraków). • Office perks: great coffee, tea, fresh fruit, snacks, and a fun atmosphere. • Flat management structure, where your voice matters. • Regular team events and a social, supportive work culture. • B2B contract or Contract of Mandate (Umowa Zlecenie).