🚀 Quantitative Developer - Senior

 Location: Krakow, Poland (Remote)

 Contract: B2B, Full-Time

Join the Future of Digital Tech with Kolomolo

At Kolomolo, we don’t just follow trends - we set them. As a global supplier of IT services and digital modernization solutions, we help businesses embrace cutting-edge technology to optimize their operations. Now, we are growing and looking for fresh talent to grow with us.

Are you proactive, tech-savvy, and eager to build your career in IT? This role could be your perfect fit.

About the Role

Our partner is developing a next-generation AI-powered institutional trading platform focused on equities, futures, forex, and cryptocurrency markets. The platform combines advanced quantitative research with institutional-grade trading infrastructure, including:

• Order Management System (OMS)

• Risk Management System (RMS)

• Algorithmic trading capabilities

• Portfolio management

• AI-driven quantitative research

• Low-latency trading infrastructure

The current engineering team consists of 5 experienced developers, and the partner is now looking to strengthen the team by hiring a Senior Quantitative Developer. As the platform continues to grow, additional quantitative engineering roles will be added.

 What You’ll Be Doing

• 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.

 What We Are Looking For

• 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.

What is in It for You

•  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).

🌟 Why Join Kolomolo?

At Kolomolo, we prioritize innovation, agility, and autonomy. Our teams have the freedom to own their work, share ideas, and make meaningful contributions. Inspired by Scandinavian values, we believe in work-life harmony and creating an inclusive culture where everyone thrives.

You will be part of a passionate, skilled, and friendly team that works hard and celebrates together. Here, you can build your career on your own terms, with opportunities to grow, learn, and make a real impact.

Our Flat Structure & The Culture of Inclusion 

At Kolomolo, we break the corporate mold. We offer:

• Agile Teams & Autonomy: No micromanagement. You’ll own your projects and enjoy the freedom to innovate.

• Work-Life Harmony: Inspired by Scandinavian values, we prioritize balance and flexibility, where remote work and asynchronous collaboration are in our DNA.

• Learning & Growth: Continuous learning is at our core. We reward hard work, value smart ideas, and foster an environment of mutual respect and trust.

• Inclusive Culture: We believe in DEI: diversity, equity and inclusion. We are committed to creating an environment where every individual, regardless of background, identity, or experience feels valued, respected, and empowered to thrive.

Join Kolomolo and elevate your career with cutting-edge technology, a supportive team, and a company that truly values your input.

Ready for the next step? Apply now and start an exciting journey of growth and innovation with us!