Senior .NET Developer

Work model: Hybrid Work location: Sofia, Bulgaria Duties And Accountabilities The Senior .NET Developer will: Design, develop, and maintain enterprise applications using Microsoft .NET technologies.Lead the delivery of complex software features and system enhancements from concept through production deployment.Perform detailed code reviews and establish development quality benchmarks.Collaborate in technical design sessions and collaborate with architects, product owners, and business stakeholders.Guide development teams in implementing scalable, secure, and maintainable solutions.Design and implement integrations with enterprise systems, APIs, messaging platforms, and cloud services.Drive adoption of engineering best practices, including automated testing, CI/CD, DevSecOpsDiagnose and resolve complex application, performance, and production issues.Contribute to system modernization initiatives and technical roadmap planning. Selection Criteria Required Qualifications Bachelor's or Master's degree in Computer Science, Software Engineering, or a related discipline.Significant professional software development experience.Demonstrated experience leading development teams and major technical initiatives. Technical Competencies Expert knowledge of C#, .NET 8+, ASP.NET Core, Web APIs, Entity Framework, and modern software architecture patterns.Experience with Azure cloud services and cloud-native application development.Experience with messaging technologies, distributed systems, and event-driven architectures.Strong knowledge of relational databases, data modeling, and performance tuning.Experience with Azure DevOps, Git, CI/CD pipelines, and automated testing frameworks. Non-Functional Expertise Deep understanding of scalability, reliability, resiliency, and fault-tolerant system design.Strong knowledge of application security, identity management, and secure development practices.Experience implementing monitoring, telemetry, observability, and operational support frameworks.Experience designing highly available and maintainable systems capable of supporting large-scale business operations. Leadership Competencies Proven ability to work in distributed development teams and technical workstreams.Strong mentoring and coaching skills.Experience conducting solution and code reviewsAbility to communicate complex technical concepts to technical and non-technical stakeholders.Demonstrated ownership and accountability for solution quality and successful delivery outcomes. Preferred Qualifications Experience delivering solutions in large international organizations.Experience working within SAFe teams.Microsoft Azure certifications.Experience with enterprise integration platforms, APIs, and cloud-based architecture.Strong analytical, problem-solving, and stakeholder engagement skills.Experience supporting mission-critical production systems and driving continuous improvement initiatives. What We Offer Extensive benefits package, Open-minded and multinational environment, Opportunity to be part of a global organization focused on development, Professional development and clear career path, Training & development opportunities including language courses. If you are looking for another opportunity and are interested in the company, do not hesitate to apply online! Stay up to date with our recent events – follow us on LinkedIn or Facebook. We are an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, sex, gender, gender expression, sexual orientation, age, marital status, veteran status, or disability status. _MS1