C# Developer

Join our ongoing collaboration with one of the largest North American banks – serving over 17 million clients worldwide. We are seeking a strong Software Developer to join the Cash Analytics team, responsible for building and supporting core pricing and risk analytics platforms for cash products.

This role focuses on developing high-performance, data-intensive systems used for pricing, risk calculation, and large-scale batch processing. The candidate will work closely with front office, risk, and engineering teams to deliver scalable, reliable, and efficient solutions in a complex production environment.

Industry: Finance

Location: Kraków / Hybrid/ Remote from Poland

Your daily work will include:

Taking care of existing C#/.

NET applications and developing new backend services, APIs, and integrations

Design, develop, and enhance pricing and risk analytics systems (batch and real-time)

Work with large datasets and optimize data processing performance (SQL, in-memory, parallel processing)

Collaborate with front office and risk teams to translate business requirements into technical solutions

• Troubleshoot and resolve complex production issues in critical systems
• Improve system scalability, performance, and reliability
• Contribute to system design and modernization of legacy platforms
• Write clean, maintainable, and efficient code following best practices
• Collaborating with developers across Poland and Canada
• Participating in code reviews, discussing technical improvements, and sharing best practices
• Using GitHub, Jira, and Jenkins for CI/CD and task management
• Team & Collaboration5 (Montrose) + around 30 on the client’s side, including developers, QAs, Business Analysts, and Project Managers
• Regular meetings:3 short standups per week (Montrose team)1 weekly standup (all team)1 weekly project status meeting (all team)

Communication via email and Webex chat

Working hours: usually 9:00–17:00 CET Qualifications:

Strong knowledge of C# and .

NET

• Good understanding of data structures, system design, and performance optimization
• Good knowledge of Python
• Solid experience with SQL, including performance tuning and working with large datasets
• Knowledge of Git and collaborative development workflows
• Proven ability to debug and resolve issues in complex production environments
• Experience working in Linux environments
• Perks, Snacks & Everything Nice :)

Work Environment & Flexibility

• Top-quality equipment to support your work
• Flexible working hours
• Remote work option
• Exciting and challenging projects with international teams
• Learning & Development
• English lessons with a native speaker
• Dedicated training budget for personal and professional growth
• Health & Well-being
• Private medical insurance
• Multisport card Air-conditioned workspace
• Showers available at the officeFood & Comfort
• Lunches from Kraków’s top restaurants delivered to the office or a refund of the budget allocated for itFully stocked kitchen with drinks, fruit, and snacks
• Lifestyle & FunNo dress code- dress comfortably
• Chillout area with bean bags, therapy balls, Play
• Station 4, Nintendo Switch 2 + games, stretching area, and pull-up barRegular team events
• Additional Perks
• Indoor bicycle parking