Senior C# Developer with Fintech experience

About the Position

On behalf of our client – a global financial institution – we are looking for an experienced specialist for the position of Senior C# Developer.

ABOUT THE PROJECT & TEAM: You will join a distributed, international team responsible for the development of core systems in the areas of XVA, Liquidity, and Financial Resource Management. The project is currently at an exciting turning point – migrating to a modern, highly advanced event-driven architecture on the back-end side. The developed UI tools support the daily operations of hundreds of users in a dynamic market environment. We work in a collaborative, agile environment with a strong emphasis on clean code and software craftsmanship.

Location: Warsaw, Poland (Remote)

Salary: 170 zł - 190 zł an hour

Responsibilities

• Develop and maintain core systems in XVA, Liquidity, and Financial Resource Management.
• Migrate the project to a modern, highly advanced event-driven architecture.
• Collaborate with a distributed, international team.
• Ensure clean code and software craftsmanship.

Requirements

• Technical Competencies:

  • Deep understanding & experience: OOP, patterns, principles.
  • Deep understanding & experience:.NET C# and its ecosystem.
  • Deep understanding & experience: service-oriented architectures.
  • Deep understanding & experience: MS SQL.
  • Demonstrable experience: DevOps tools.
  • Understanding of LLM capabilities in software development; practical experience with agentic AI engineering in an enterprise environment.

• Functional / Financial Knowledge: Candidates are required to have expertise in at least 2 areas from the following list:

  • Financial products (Listed / OTC)
  • PnL Explain, risks (Delta, Gamma, Theta, Vega...)
  • XVA (CVA, FVA, ColVA...)
  • Liquidity Risk (RNFB, NSFR...)
  • Cash Forecasting
  • Balance Sheet Metrics (Leverage Exposure...)
  • Pre-trade calculation and booking workflow

Tech Stack

• Language & Frameworks: C# .NET, Windows Services, ASP.NET Web API, SignalR
• Communication: Asynchronous message-driven communication (Rebus)
• Databases & ORM: MS SQL, ORM (Dapper)
• Tools & DevOps: GIT (Bitbucket), TeamCity, Jenkins, Ansible

Nice to Have

• Web development experience: HTML, JavaScript / TypeScript, React, Redux.

Conduct & Attitude Expectations

• High autonomy combined with excellent teamwork skills.
• Excellent communication, analytical, and organizational skills.
• Attention to detail (especially under time pressure).
• Proactive, flexible approach to daily engineering challenges.
• Motivation to work directly with front-office IT.
• Integrity and discipline.
• Role model supporting a culture of good conduct.
• Proactivity, transparency, and accountability in managing conduct risks.
• Considering the impact of decisions on colleagues, partners, and clients; escalation in case of doubts.

We Offer

• Competitive salary.
• Opportunity to work with a global financial institution.
• Collaborative, agile work environment.
• Remote work options.

About the Company

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.