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Senior Backend Developer
  • Warsaw
Senior Backend Developer
Warszawa, Warsaw, Masovian Voivodeship, Polska
speedapp
19. 6. 2025
Informacje o stanowisku

technologies-expected :


  • .NET Core
  • C#
  • Azure DevOps
  • .NET

about-project :


  • Join a dynamic team in the financial industry and help develop cutting-edge trading systems used by clients worldwide.

responsibilities :


  • Architect and build robust, scalable backend systems using .NET Core/6/7.
  • Optimize performance for speed and reliability, ensuring security and compliance with industry standards.
  • Integrate with third-party APIs and payment processing systems.
  • Lead the transition to microservices architecture, designing modular solutions for maintainability.
  • Implement and maintain CI/CD pipelines to streamline development and deployment processes.
  • Monitor and log system health, proactively detecting and resolving issues.
  • Mentor junior team members through pair programming and code reviews.
  • Write clean, maintainable code, utilizing TDD and unit testing for high-quality software.
  • Collaborate in Agile development teams and contribute to continuous improvement initiatives.
  • Support Product Managers by assessing solution alternatives and providing technical recommendations.

requirements-expected :


  • Minimum 8 years of experience as a Backend Developer.
  • Strong knowledge of C#, .NET Core/6/7, Clean Code principles (TDD, SOLID), and Clean Architecture.
  • Experience working with distributed systems and microservices.
  • Proven track record in building and launching trading platforms or financial systems.
  • Deep understanding of trading system functionalities (order routing, execution, risk management).
  • Excellent problem-solving and communication skills; ability to explain technical concepts clearly.
  • Bachelor’s degree in Computer Science, Engineering, or a related field.
  • Experience in financial services or payment provider integrations is highly valued.
  • Proficiency in English (both written and spoken) required.

offered :


  • Cooperation based on a B2B contract.
  • 100% remote work.
  • The support of a dedicated mentor. In the relationship, we focus on direct communication. When you join speedapp, you will be put in touch with a dedicated mentor who will make sure that you enjoy working with us and with the client.
  • Events and integration meetings, as well as participation in various initiatives, e.g., sports.
  • Access to the benefits offering (medical care, life insurance, Multisport card).

  • Praca Warszawa
  • Warszawa - Oferty pracy w okolicznych lokalizacjach


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