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Senior .NET Developer

  • Sofia, Bulgaria
  • hot
Job #: 43557
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

Equal Employment Opportunity

EPAM Systems, Inc. is an equal opportunity employer.  We recognize the value of diversity and inclusion in creating success for our customers, business partners, shareholders, employees and communities. We are committed to recruiting, hiring, developing and promoting employees without discrimination. As a global employer, this commitment includes complying with all laws in the countries in which we operate. Nevertheless, we believe equal employment practices should not be limited to what the law requires. Equal opportunity and inclusion are essential to motivate, empower and recognize the best in everyone.

At EPAM, employment actions are based on individual qualifications, without regard to race, color, religion, creed, gender, pregnancy status, sexual orientation, gender identity, gender expression, marital or familial status, national origin, ancestry, genetics, age, disability status, veteran status, citizenship status when otherwise legally able to work, or any other characteristic protected by law.

Pay Transparency Non-Discrimination Provision

EPAM will not discharge or in any other manner discriminate against employees or applicants because they have inquired about, discussed, or disclosed their own pay or the pay of another employee or applicant. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with the contractor’s legal duty to furnish information. 41 CFR 60-1.35(c)

Affirmative Action Obligations as a U.S. Government Federal Contractor

As a U.S. federal government contractor, EPAM is committed to meet its affirmative action obligations to make good faith efforts to expand the recruiting pool of women, minorities, individuals with disabilities, and protected veterans through outreach, targeted recruitment, training opportunities and other activities. We affirm this commitment annually in EPAM’s Affirmative Action Plans. The full text of our Affirmative Action Plan for Persons with a Disability and Protected Veterans is available for inspection in the People Operations Department during normal business hours. Email the People Operations Department to schedule an appointment.

Accessibility for Applicants with Disabilities

EPAM is committed to working with and providing reasonable accommodation to individuals with disabilities. If you require an accommodation at any stage of the employment application process, please send an email to the People Operations Department including your name, a detailed description of your requested accommodation, and the best method to contact you. If you have already reviewed a job posting or submitted an application for a job, please include the requisition number. We will assist you and make a determination on your accommodation request on a case-by-case basis.

EEO is the Law. Applicants to and employees of EPAM Systems Inc., are protected under Federal law from discrimination.

EPAM Systems, Inc. participates in eVerify.

Background investigations are required for all new hires as a condition of employment, after the job offer is made. Employment will not begin until EPAM Systems receives and approves the results of the background check.

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