Senior .NET Developer

Sofia, Bulgaria

Striving for excellence is in our DNA. Since 1993, we have been helping the world’s leading companies imagine, design, engineer, and deliver software and digital experiences that change the world. We are more than just specialists, we are experts.


Currently, we are looking for a Senior .NET Developer for our Sofia office to make the team even stronger.


  • Work within the strategic architecture of the Market Data Exchange (MDX) Platform: reviewing that architecture and making suggestions for improvements as requirements emerge;
  • Deliver code that meets functional requirements within agreed timelines and adhering to industry and client software standards;
  • Deliver architectural & functional improvements that will have a positive impact on our technology estate & business;
  • Ensure the documentation of detailed business requirements and technical specifications in relation to delivered solutions.


  • Good knowledge and at least 5 years of experience in .NET development with С# (ASP.NET MVC, ASP.NET Web API, WCF);
  • Experience and very good expertise with XML and OO design;
  • Experience with Entity Framework, LINQ, MS SQL Server, Oracle or other DB;
  • Experience with Visual Studio IDE and commonly used version control systems like SVN/Git;
  • Experience with WPF or Windows forms is a plus;
  • Good understanding of object-oriented programming principles;
  • Development experience in large scale, high volume, multi-threaded and highly distributed systems;
  • Good knowledge of abstract data structures and algorithms;
  • Practical knowledge of design patterns;
  • Experience working with quantitative models;
  • Experience and interest with Agile and Test Driven Development methodologies;
  • Analytical mindset and high attention to detail;
  • Excellent investigative and problem-solving abilities;
  • Work well individually or as part of a geographically distributed team;
  • Excellent communication skills in English.

Nice to have

  • Experience with cloud providers – AWS, GCP, Azure etc;
  • Experience with any of the following – Python, Java;
  • Experience with GraphQL;
  • Experience in fixed income and forex trading;
  • Work experience on projects with high performance / low Latency aspects;
  • Knowledge in graph theory and experience with graph databases – in particular, JanusGraph;
  • Experience with Kubernetes & Terraform will be considered an advantage.

We offer

  • Personal development program that will allow you to be valued for your strengths;
  • Wide range of professional trainings and workshops;
  • Unlimited access to LinkedIn learning solutions;
  • Attractive salary, additional health and dental insurance as well as other social benefits;
  • Broad projects variety and possible mobility between projects over the time;
  • Experience exchange with colleagues around the world;
  • Work-life balance and flexible schedule, team buildings and sport opportunities;
  • Modern office in the Infinity Tower business center;
  • If you are interested in this role please send your CV in English. All applications will be treated as strictly confidential;
  • Only short-listed applicants will be contacted.