Nikolay Zdravkov

NIKOLAY ZDRAVKOV Senior Software Engineer Plovdiv, Bulgaria | (- (- |-LinkedIn | GitHub PROFESSIONAL SUMMARY Senior Software Engineer with 8+ years of experience delivering high-impact solutions across financial technology, gaming, and AI systems. Proven track record of scaling platforms from 1 billion to 10 billion daily transactions, achieving 30-2000% performance improvements, and building AI systems processing 1TB of data daily. Expert in low-latency programming, enterprise architecture, and multi-agent AI workflows. KEY PROJECTS & ACHIEVEMENTS • Performance Optimization: Led .NET Core migration achieving 30-2000% performance improvements, 60% latency reduction, and 50% cost savings on systems handling 10 billion transactions daily • AI Systems Architecture: Built multi-agent AI platform processing 1 terabyte daily data and handling 3,000 questions daily with 1,000+ user waiting list • Enterprise Scale Impact: Integrated IdentityServer for infrastructure managing 100,000+ gaming servers processing 500 million transactions daily • Delivery Excellence: Reduced client delivery timelines from 2-3 months to 1 month through automation across 23 client projects • Technical Leadership: Made 6,000+ contributions across distributed teams in 4 countries, mentoring developers and setting coding standards STANDOUT PROJECTS Multi-Agent AI Financial Intelligence Platform | 2024 Built sophisticated AI system with routing agent, task planner, and parallel processing architecture. Developed specialized agents for cash flow, balance sheets, forecasting, and banking that process millions of rows monthly. System enables CFOs to handle 10+ clients simultaneously (previously limited to 10), significantly increasing profit margins. High-Performance Platform Migration |- Spearheaded complete .NET Core migration from EF6 to EF Core across 23 client projects. Optimized throughput, memory consumption, and TCP connection utilization. Successfully handled peak traffic during Black Friday and Christmas campaigns, scaling from 1 billion to 10 billion daily transactions. Enterprise Identity Integration | 2023 Led autonomous team delivering IdentityServer integration with OIDC flow and SCIM provisioning for massive distributed infrastructure. Managed full lifecycle from requirements gathering to deployment strategy for system processing 500 million transactions daily. PROFESSIONAL EXPERIENCE Senior Software Engineer | ScaleUp Finance | Remote | 2024 - Present Role: Lead AI systems architect developing financial intelligence platform for SMEs and startups Key Contributions:       Architected multi-agent AI workflow system processing 1 terabyte of data daily across all clients Built routing system with task planner generating specialized prompts for parallel agent processing Delivered system handling 3,000 questions daily with 1,000+ signups on waiting list Implemented comprehensive data integration including ERP/CRM systems, currency conversion, Open Banking integration Developed internal tools platform enabling CFOs to handle 10+ clients simultaneously, increasing profit margins Led 18-month project through three iterations: research/prototype (1 month), multi-agent workflow development (5 months), ongoing fine-tuning/visualization Technical Environment: AI/ML systems, Python, multi-agent workflows, financial data processing, ERP/CRM integration Senior Software Engineer | I3D (Ubisoft Company) | Remote, Rotterdam, Netherlands | July 2023 - January 2024 Role: Enterprise identity infrastructure architect for gaming industry scale systems Key Contributions:      Led IdentityServer integration for infrastructure managing 100,000+ charging stations processing 500 million transactions daily Worked in autonomous 3-person team with end-to-end product ownership Implemented OIDC flow and SCIM provisioning for enterprise-scale distributed infrastructure Conducted in-depth analysis of IdentityServer enterprise capabilities and deployment strategies Collaborated across departments for seamless integration into existing authorization/authentication systems Technical Environment: IdentityServer, OIDC, SCIM, enterprise authentication systems, distributed infrastructure Senior Software Engineer | Tiebreak Solutions | Sofia, Bulgaria | January 2022 - July 2023 Role: Lead architect for high-frequency trading systems Key Contributions:      Designed and implemented proof-of-concept shares trading system using FIX protocol Architected end-to-end system including connectivity, order management, and trade execution Established dedicated line integration to New York Stock Exchange Identified and reported critical legacy security vulnerabilities affecting client fund security Made principled decision to prioritize client security over project completion Technical Environment: FIX protocol, high-frequency trading systems, financial market connectivity, lowlatency programming. Senior Backend Engineer | Poq | Remote, London, UK | November 2018 - January 2022 Role: Performance optimization specialist and platform modernization lead across 23 client projects Key Contributions:        Delivered 6,000+ contributions across 23 client projects with distributed team of 8 members across 4 countries Spearheaded .NET Core migration achieving 30-2000% performance improvements and 60% latency reduction Delivered 50% cost savings while optimizing platform from 1 billion to 10 billion transactions daily Reduced client delivery timeline from 2-3 months to 1 month through process automation Successfully handled peak traffic during Black Friday, Christmas, and major promotional campaigns Led backend engineering and architecture meetings, presenting best practices including null-safety concepts and HTTP/2 with Brotli compression Mentored junior developers, participated in hiring interviews, and conducted code reviews for 3-4 member teams Technical Environment: .NET Core, EF Core, microservices architecture, performance optimization, distributed systems Engineer | Kodar | Plovdiv, Bulgaria | October 2016 - November 2018 Role: Full-stack developer across automotive, finance, and transportation domains Key Contributions:     Progressed from junior to mid-level developer through ownership mindset and continuous improvement Developed projects across diverse domains including automotive, finance, and transportation Participated in multiple automation and streamlining initiatives Built foundation in software development best practices and domain expertise Technical Environment: Various technologies across automotive, finance, and transportation sectors. CORE SKILLS & COMPETENCIES Technical Skills: C# / ASP.NET Core • SQL / SQLServer / PostgreSQL • Low-latency programming • Software Design / Architecture • Azure / AWS • Docker • Git • AI/ML Systems Specializations: High-performance systems • Financial systems • Enterprise identity management • Multi-agent AI workflows • Performance optimization • System architecture EDUCATION Bachelor of Science in Business Information Technologies Plovdiv University "Paisii Hilendarski" | Plovdiv, Bulgaria | September 2014 - September 2018