Senior/Lead Backend Engineer (C#, Java) (CAPITAL MARKETS)

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Requirements:

• Strong expertise, min 6 years of experience in C#, with proven experience building scalable backend systems.
• Familiarity with Java is a nice-to-have, allowing for flexibility in working across different parts of the technology stack.
• Deep understanding of equity derivatives products (Options, Range Accruals, Equity Swaps, Accumulators) and their life cycle, with an ability to translate this knowledge into high-quality software solutions.
• Experience with RESTful APIs, network protocols, and system integration strategies.
• Proficiency in performance tuning and optimization of complex financial systems to meet strict latency and throughput requirements.
• Good command of English (both written and spoken), Polish is nice to have
• Bachelor/Master Degree in Computer Science or related topic

Responsibilities:

• Lead System Design & Development: Design, develop, and optimize the EQ booking and life cycle system for scalability and performance.
• Collaborate with Teams: Work with Front Office, Middle Office, and Quant teams to define requirements and integrate pricing models.
• System Integration & Performance: Ensure smooth integration with other systems via APIs and optimize system performance.
• Mentor & Guide Developers: Provide technical mentorship and set best practices for the team.
• Troubleshoot & Solve Issues: Proactively resolve technical issues and make decisions to maintain system functionality.
• Ownership & Accountability: Take ownership of projects and deliver high-quality solutions on time.