Senior Backend Engineer

This position is posted by Jobgether on behalf of a partner company.We are currently looking for a Senior Backend Engineer (B2B Contract) in Bulgaria.This role offers the opportunity to design and scale backend systems that play a critical role in securing modern software ecosystems.You will work in a fast-paced, engineering-driven environment alongside highly skilled peers, contributing to systems that prioritize performance, reliability, and security.The position emphasizes ownership, technical excellence, and real-world impact at scale.You will collaborate closely with cross-functional teams to shape architecture and deliver robust solutions.This is an ideal role for someone who enjoys tackling complex backend challenges while influencing long-term technical direction.Your work will directly support mission-critical infrastructure used globally.AccountabilitiesDesign, build, and maintain scalable backend systems and APIs that support high-performance security solutionsCollaborate with frontend engineers, product managers, and stakeholders to define architecture, requirements, and technical trade-offsOptimize system performance, scalability, and security through clean code, reviews, and best engineering practicesTroubleshoot, debug, and resolve production issues while minimizing downtime and operational riskContribute to system evaluations and continuous improvement initiatives across the backend stackMentor and support junior engineers, fostering knowledge sharing and technical growth within the teamRequirementsBachelor's degree in Computer Science or a related technical field, or equivalent practical experienceAt least 5 years of hands-on experience in backend development for scalable, production-grade systemsStrong proficiency with Node.js and backend application developmentSolid experience working with both SQL and NoSQL database technologiesFamiliarity with cloud-based environments and microservices architecturesStrong problem-solving skills, attention to detail, and a passion for clean, maintainable, and secure codeBenefitsB2B contract with competitive compensation aligned with senior-level expertiseFlexible, remote-friendly work environmentOpportunity to work on high-impact, security-focused products at scaleCollaboration with experienced engineers in a technically challenging settingProfessional growth through ownership, mentorship, and exposure to complex systemsWhy Apply Through Jobgether?We use an AI-powered matching process to ensure your application is reviewed quickly, objectively, and fairly against the role's core requirements.Our system identifies the top-fitting candidates, and this shortlist is then shared directly with the hiring company.The final decision and next steps (interviews, assessments) are managed by their internal team.We appreciate your interest and wish you the bestData Privacy Notice: By submitting your application, you acknowledge that Jobgether will process your personal data to evaluate your candidacy and share relevant information with the hiring employer.This processing is based on legitimate interest and pre-contractual measures under applicable data protection laws (including GDPR).You may exercise your rights (access, rectification, erasure, objection) at any time.#J-*****-Ljbffr