CV – İ. Deniz YILMAZ

İhsan Deniz YILMAZ

Acting Technical Manager — Systems & Application Performance (2025 May – Present)

Providing technical leadership for performance, resilience, and observability initiatives across critical banking systems
Making architecture-level and operational decisions for high-impact production environments
Coordinating between engineering, operations, and management teams during incidents and large-scale changes
Leading incident response, root cause analysis, and post-mortem processes
Driving long-term improvements in system reliability, scalability, and operational maturity

Team Lead — Systems & Application Performance (2023 Apr – 2025 Apr)

Led a small team focused on application performance optimization and incident response
Performed advanced production issue analysis using memory dumps, TCP dumps, and profiling tools
Identified performance bottlenecks across application, middleware, and infrastructure layers
Mentored junior engineers and supported their technical and analytical growth

Systems & Application Performance Engineer (2021 Aug – 2023 Mar)

Monitored application performance and system health using APM and observability tools
Conducted root cause analysis for performance degradations and production incidents
Performed profiling, tracing, and system-level diagnostics
Worked closely with development teams to improve performance and system stability
Supported performance troubleshooting across applications (.NET, Java, Python) and infrastructure layers (WAF, Load Balancers, ESXi) using tools such as WinDbg, AppResponse, Dynatrace, and Wireshark

Worked on full-stack development of ERP platforms using ASP.NET, .NET Core, and Blazor
Interacted directly with customers to analyze requirements, resolve issues, and deliver new features
Maintained and extended existing ERP modules used in production environments

Client Assignment (Outsourcing): Doğuş Teknoloji

Assigned as an outsourced software developer while maintaining primary responsibilities at Novartz
Developed after-sales service modules used by Doğuş Otomotiv
Worked in parallel with two organizations, balancing workloads and delivery timelines in an agile environment

Contributed to the development of a B2B & B2C car rental and dealership platform, working across frontend and backend layers
Built user interfaces using React with Material UI, and developed backend services with NestJS
Took part in the development of an in-house e-commerce platform, implementing features across CMS, ERP, and e-commerce modules
Worked on a Next.js-based e-commerce frontend, focusing on usability and performance
Integrated local online marketplaces via APIs to automate stock synchronization and price updates
Developed a React Native mobile application for warehouse stock management, enabling barcode scanning and product location tracking

Worked on the development and maintenance of ERP applications built with ASP.NET WebForms, supporting active customer systems
Implemented customer-requested features and fixes under guidance, gaining experience with real production workflows
Assisted in requirement analysis, issue reproduction, and incremental improvements within a large legacy codebase
Contributed to application localization, creating and managing resource files (.resx) to support English language versions
Participated in the translation and adaptation of a large WebForms application (~900 ASPX pages), focusing on correctness and consistency
Performed manual deployments to customer environments via FTP, gaining hands-on exposure to IIS hosting and configuration
Supported UI-level improvements using jQuery and Bootstrap within existing system constraints

Çukurova University · Adana, Türkiye (2014 – 2021)
Bachelor’s Degree in Computer Engineering