Senior C# Developer

Unleash the Power of Innovation - Drive the Future of Equity Derivatives Technology

Krakow-based opportunity with hybrid work model, allowing up to 3 remote days per week.

As a Senior C# Developer for Equity Derivatives Platform, you will be working for our client, a leading global financial institution specializing in Banking and Markets IT. You will help develop and enhance cutting-edge Structured Products trading infrastructure, enabling innovative solutions for complex financial challenges. This is a chance to shape the next generation of derivatives platforms and accelerate your growth in a dynamic, international environment.

Your main responsibilities:

• Collaborate in the full software development lifecycle, from requirements analysis through deployment and support.

• Build and support strategic Equity Derivatives trading infrastructure to meet evolving business needs.

• Re-design and migrate legacy solutions (Excel/VBA) into modern C# frameworks, driving digital transformation.

• Work closely with structuring and trading desks to develop tactical and semi-strategic platforms.

• Implement modern development practices including test-driven development, DevOps, and Agile methodologies.

• Maintain high standards of code quality, testing, and operational excellence.

• Support users during UAT phases and provide ongoing production support.

• Participate in continuous improvement activities and contribute to innovative projects.

You're ideal for this role if you have:

• Minimum 6 years of experience in software development, specifically with C#.

• Strong expertise in object-oriented programming and modern software engineering practices.

• Hands-on experience with relational databases (Oracle, PostgreSQL) or NoSQL databases (MongoDB).

• Familiarity with event-driven architecture and REST/SOAP web applications.

• Excellent communication skills in English, fluent level.

• Strong sense of ownership, drive, and ability to work effectively in complex, global teams.

• Motivation to deepen understanding of equity derivatives business.

It is a strong plus if you have:

• Knowledge of Google Cloud or cloud-based solutions.

• Experience with derivatives pricing or risk management.

• Growth mindset with adaptability to agile development.

Language Required for the role:

• Fluent English, with excellent spoken and written communication skills.

Eligibility for the role:

Only candidates with an existing legal right to work in the European Union will be considered for this role.

We offer you: 

ITDS Business Consultants is involved in many various, innovative and professional IT projects for international companies in the financial industry in Europe. We offer an environment for professional, ambitious, and driven people. The offer includes:

• Stable and long-term cooperation with very good conditions  

• Enhance your skills and develop your expertise in the financial industry 

• Work on the most strategic projects available in the market 

• Define your career roadmap and develop yourself in the best and fastest possible way by delivering strategic projects for different clients of ITDS over several years 

• Participate in Social Events, training, and work in an international environment 

• Access to attractive Medical Package 

• Access to Multisport Program 

• Access to Pluralsight 

• Flexible hours & remote work 

#MAKEYourCareerBETTER

Internal job number #8357

You can report violations in accordance with ITDS’s Whistleblower Procedure available here.