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

As a Senior Backend Engineer at Capco Poland, your primary responsibilities will include leading the design, development, and optimization of the EQ booking and life cycle management system. You will collaborate with cross-functional teams including Front Office, Middle Office, and Quant teams to define requirements and integrate pricing models. Additionally, you will mentor junior engineers, ensure smooth system integration with APIs, and proactively troubleshoot technical issues to maintain optimal system functionality.

To qualify for the Senior Backend Engineer role at Capco Poland, candidates should have a minimum of 6 years of experience in backend development, particularly with C#. Familiarity with Java is a plus. A deep understanding of equity derivatives products, RESTful APIs, and integration strategies is essential. Candidates should also have a Bachelor's or Master's degree in Computer Science or a related field, alongside strong English communication skills.

As a Senior Backend Engineer at Capco Poland, you will primarily work with a technology stack that includes C#, .NET 6-9, SQL, and message queue technologies like RabbitMQ. Experience with Redis or MongoDB, RESTful APIs, and microservices is also important. While not mandatory, knowledge of cloud platforms such as AWS, GCP, or Azure, as well as Java and Spring Boot, will be beneficial.

Success as a Senior Backend Engineer at Capco Poland requires a combination of technical expertise and soft skills. Candidates should exhibit strong collaboration abilities, effective communication skills, and a customer-focused mindset. Being action-oriented, demonstrating courage to make decisions, and instilling trust within the team are also key attributes. Additionally, being adaptable and capable of quick learning in a fast-paced environment is highly valued.

Capco Poland offers a range of benefits designed to support your professional and personal well-being. These include an employment contract or business-to-business options, remote work possibilities, and access to various employee benefits packages such as private medical care and life insurance. Additionally, you will have access to a platform with 3,000+ business courses for continuous learning and opportunities to participate in charity events. The inclusive culture at Capco also fosters innovation and values diverse perspectives.

Highlight specific projects where you've utilized C# for backend development, discussing the scalability and performance considerations you focused on. Explain how these experiences enable you to lead projects effectively at Capco Poland.

Discuss your methods for assessing user needs, identifying bottlenecks, and selecting appropriate architecture patterns. Provide examples of scalable projects you've worked on, emphasizing how you addressed challenges.

Share your techniques for fostering communication and collaboration, such as regular check-ins, using project management tools, and aligning goals with other teams. Highlight successes that resulted from such collaboration.

Illustrate a specific challenge you've faced, detailing the steps you took to diagnose and troubleshoot the issue. Discuss the outcome and the lessons learned, stressing your problem-solving skills.

Discuss your strategies for continuous learning, such as attending conferences, following industry leaders, or participating in online courses. Relate this back to how you can apply new insights at Capco Poland.

Talk about the principles you've followed for designing and developing APIs, including optimization techniques like caching and rate limiting. Provide examples of APIs you've built that excelled in performance.

Demonstrate your knowledge of equity derivatives, detailing your experiences with various products like options and equity swaps. Explain how your understanding shapes your work, especially at Capco Poland.

Share a specific mentoring experience, focusing on the strategies you've used to foster their growth. Highlight the importance of mentorship at Capco Poland in shaping a collaborative culture.

Discuss techniques you've employed for performance optimization, such as profiling, refactoring code, and load testing. Relate these techniques to how they could benefit projects at Capco.

Explain your approach to balancing speed and quality, such as prioritizing features, conducting code reviews, and utilizing automated testing. Share examples of successful projects completed under pressure.