Middle .Net Developer

Be | Shaping the Future Poland has a proven position of being a reliable partner for financial services organizations to analyze complex requirements, find solutions and implement them in their entirety, regardless of their complexity. Since the foundation of Be Poland in 2013, we have been continually expanding and customizing our spectrum of services. Today, we are privileged to have in our team the best individuals in each sector we operate within the financial services industry.

We are looking for a .NET Developer (C#) to support the integration of an external portfolio management tool into the existing Investment Bank Equities platform. You will work closely with senior developers and business teams, gaining exposure to Equities and Funds Trading while contributing to a front-office technology initiative.

The role focuses on developing and maintaining integration solutions between investment and trading platforms and external banking systems, supporting data exchange, operational workflows, and front-office processes.

Key Responsibilities

• Develop and maintain robust C#/.NET components supporting integration with a third-party portfolio management tool.
• Design, develop, and support backend integration solutions connecting trading and investment platforms with external banking and financial systems.
• Implement data extraction, transformation, and delivery processes using REST/HTTP APIs, file-based interfaces, Oracle SQL, and ORM frameworks.
• Support backend integration workflows involving data exchange, REST APIs, and system interoperability.
• Analyze, troubleshoot, and resolve production integration issues, data availability problems, and system incidents.
• Collaborate with internal technical and business teams to understand platform requirements and architecture.
• Participate in code reviews, testing activities, and deployment processes.
• Support migration and transformation initiatives involving trading and market data sources.
• Investigate and troubleshoot technical issues with guidance from senior team members.
• Occasional opportunity to contribute to front-end features or trader-facing desktop applications (if possessing the relevant "nice to have" skills).

Required Skills & Experience

• 3+ years of professional experience in .NET/C# development in commercial applications (Mandatory).
• Higher education degree in Information Technology, Computer Science, or a related field (Mandatory).
• Good understanding of OOP principles, design patterns, and clean code practices.
• Experience working with REST APIs and backend integration.
• Experience designing and supporting system-to-system integrations and data exchange processes.
• Practical experience with SQL databases (Oracle preferred).
• Familiarity with enterprise systems or larger application environments.
• Strong problem-solving skills and attention to detail.
• Experience investigating and resolving production issues.
• Fluency in English (written and spoken).

Nice to Have

• Practical experience or familiarity with Angular (version 8+ preferred).
• Previous exposure to or working knowledge of C++ and/or Java.
• Experience in financial services, investment banking, Equities, Funds, or Trading systems.
• Experience with WPF desktop applications.
• Familiarity with ORM frameworks such as NHibernate.

Our offer:

• Competitive remuneration on B2B contract
• Option to activate Medicover and Multisport on preferential terms
• Access to Mindgram – mental health & well-being platform
• Free gym at Q22
• Personal development – internal online / onsite DevTalks
• Referral bonus program
• International environment