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Senior Back-End Engineer – Sports Betting – Sofia, Bulgaria

CloserHire


Job Location:

Sofia - Bulgaria

Monthly Salary: Not provided by the employer
Posted: 2 October 2026 (7 hours ago)
Application Deadline: 30 December 2026
Vacancies: 1 Vacancy

Job Summary

Hiring now: Senior Back-End Engineer Sports Betting Sofia Bulgaria. English required. Competitive discussed at interview.

Check you qualify first
  • 5 years of professional back-end software development experience
  • Strong experience with a modern server-side programming language and its ecosystem
  • Solid experience designing and developing RESTful APIs and microservices
  • Strong knowledge of relational and/or NoSQL databases such as PostgreSQL MongoDB Redis or similar
  • Experience developing high-traffic high-availability or real-time applications
  • Good understanding of distributed systems asynchronous processing and event-driven architectures
  • Experience with messaging technologies such as Kafka RabbitMQ or similar is an advantage
  • Strong understanding of software architecture design patterns and clean coding principles Experience with Git CI/CD pipelines automated testing and modern development workflows Familiarity with Docker Kubernetes AWS or other cloud technologies is highly advantageous

If those line up the rest is worth your time.

Who the employer is

CloserHire is partnering with a fast-growing international technology company within the sports betting and iGaming industry to recruit a Senior Back-End Engineer for their team in Sofia Bulgaria. This is an opportunity to work on high-performance real-time sports betting products building the systems and services that power complex betting operations. You will take ownership of backend development architecture integrations and performance while working in an engineering environment where scalability reliability

The work

The role centres on design develop and maintain high-performance backend services and applications build scalable systems capable of handling high volumes of real-time transactions and data develop and maintain APIs microservices and integrations with internal and third-party systems contribute to the architecture and continuous evolution of the companys sports betting platform work with real-time sports data betting feeds pricing and other platform integrations and design reliable solutions capable of supporting significant traffic during major sporting events.

Pay

Competitive discussed at interview

Bulgaria applies a flat 10% income tax and living costs in Sofia Plovdiv and Varna run well below Western European levels the take-home goes considerably further than the headline suggests.

Benefits

Alongside the salary you get senior-level position within a growing international sports betting technology company opportunity to develop the core systems behind real-time high-traffic betting products modern technology stack and engineering-focused working environment high level of ownership over backend architecture and technical solutions opportunity to influence scalability performance and platform development collaborative international engineering team professional development and career growth opportunities and exposure to complex real-time data and high-volume transactional systems.

Bulgaria

A flat 10% income tax and some of the lowest living costs in the EU your salary stretches a long way.

To apply
  • Apply with your CV we read every application
  • A short introductory call with CloserHire around 30 minutes
  • Interview with the company
  • Offer then we help with the paperwork and where relevant the move

CloserHire recruits for this role on behalf of our client. We are an equal-opportunity recruiter and consider every applicant on ability alone.