Software Developer .Net Core

Contact Information: Zoltan Strebely, 859-***-****, ******@********.***, Cold Spring, Ky.

Senior Software Developer with extensive experience building scalable web applications and microservices. Notable achievements include improving query performance by 30% with a legacy database migration and reducing deployment times via automated CI/CD pipelines. Demonstrated expertise in Angular, .NET Core, AWS, and RESTful API development while consistently delivering secure and high-quality solutions. Proven leadership in mentoring teams and fostering agile practices.

Skills

• Programming Languages: C#, .NET Core, Java, C++, Python, F#, VB.NET, JavaScript, TypeScript

• Web & Frontend Technologies: ASP.NET, Blazor, React, Angular, WPF, RESTful APIs, GraphQL, SOAP (WCF, ASMX), Node.js

• Cloud & DevOps: AWS (EC2, RDS, S3, Lambda, EKS), Kubernetes, Docker, Terraform, Helm, CI/CD (Jenkins, GitHub Actions, Azure DevOps), Linux

• Databases & Data Engineering: PostgreSQL, SQL Server, MySQL, MongoDB, DB2, Oracle, Talend ETL, Data Warehousing, Query Optimization, Relational DBs

• Software Development & Architecture: Microsofts, Event-Driven Architecture, Distributed Systems, Design Patterns (MVC, MVVM, CQRS), API Development & Integration, Full Stack Development

• Security & Compliance: OAuth 2.0, JWT, IdentityServer, OWASP Security Best Practices, Vulnerability Remediation, Secure Coding

• Project Management & Agile: Agile (Scrum/Kanban), JIRA, Azure DevOps, Technical Documentation, Code Reviews, Team Mentorship, Scrum

• Software Testing & Quality Assurance: Test Cases Work Experience

Equifax 2022 - Present

Senior Software Developer

• Directed the migration of a 2TB+ legacy Oracle database to PostgreSQL, improving query performance by 30% and reducing operational costs by 20%.

• Refined the legacy ADO.NET data access layer to Entity Framework, minimizing code complexity and accelerating development cycles.

• Engineered a scalable RESTful API to replace the monolithic architecture, enhancing response times by 40% and aligning with microservices design principles.

• Built full-stack solutions with Angular, .NET Core, and PostgreSQL, modernizing an aging application stack while ensuring clean, efficient code.

• Orchestrated security remediation initiatives that reduced critical vulnerabilities by 70% through detailed code audits, encryption strategies, and secure coding practices.

• Implemented automated CI/CD pipelines for AWS Kubernetes deployments using Terraform and Helm, cutting deployment time from 2 hours to 15 minutes and demonstrating proficiency in cloud services and DevOps practices. Fidelity Investments 2020 - 2022

Principal Software Engineer

• Initiated the automation of manual PDF generation, reducing processing time from months to 20 minutes and saving over 500 labor hours annually.

• Developed optimized algorithms for PDF generation that decreased processing errors by 60% and enhanced document accuracy.

• Coordinated a 3-member offshore development team by assigning tasks, performing code reviews, and ensuring timely project delivery while promoting team growth.

• Optimized SQL-heavy applications by refactoring query structures and improving database indexing strategies, reducing query execution time by 50%.

• Modernized a legacy financial application by migrating from WinForms to .NET Core MVC, thereby improving UI responsiveness and scalability.

Onix Networking 2018 - 2020

Search Engineer/Developer

• Built interactive UIs using Google Cloud Search Java SDK, improving search accuracy and user experience by 35%.

• Designed and developed search-driven UIs using Google Cloud Search APIs, enhancing real-time data retrieval.

• Engineered a metadata extraction pipeline for CAD drawings, enabling advanced faceted search and improving retrieval efficiency by 40%.

• Enhanced data integration workflows by optimizing Talend ETL connectors, reducing data processing latency by 25%.

• Acted as a technical consultant, gathering client requirements and translating them into custom search solutions. Fifth Third Bank 2015 - 2018

Software Developer/Architect/Lead/Manager

• Designed and developed 20+ enterprise applications, streamlining internal banking operations and reducing manual workflows by 40%.

• Led the replacement of a costly third-party application with an in-house Java/.NET-based service, cutting licensing costs by $500K annually.

• Collaborated with cross-functional teams to implement government compliance architecture, ensuring full regulatory adherence.

• Recruited and managed a 5-member offshore team, defining project roadmaps and ensuring on-time regulatory compliance delivery.

• Implemented Agile task delegation using JIRA, optimizing workflows for regulatory updates and reducing development time by 30%

• Led Agile transformation efforts, migrating 10+ teams to GitHub, Jenkins, and Scrum workflows, improving code integration efficien Progressive Insurance 2014 - 2015

Software Developer/Analyst

• Conducted system-wide analysis of legacy authentication platforms, defining requirements for a new OAuth 2.0-based authentication system.

• Optimized web server configurations (IIS, Apache) to support OAuth authentication, reducing latency in login requests by 20%.

• Implemented unit and integration tests using xUnit and Selenium, achieving 95%+ test coverage for authentication flows. Tornado Technologies 2014 - 2014

Software Developer/Analyst

• Designed a real-time data visualization prototype for stethoscope recordings using Python and Matplotlib, enabling doctors to analyze heart sounds visually.

• Modernized a legacy web UI using ASP.NET and JavaScript, introducing configurable client-specific themes and improving UI accessibility by 40%.

AmTrust 2013 - 2014

Software Engineer

• Identified and resolved key bottlenecks in .NET and SQL Server-based applications, improving processing speed by 50%.

• Added new reporting and analytics features to an insurance claims platform, improving data insights for underwriters. Streb Ent LLC 2010 - 2013

Programmer/Architect/Developer

• Designed and developed a full-stack business management system using .NET and MySQL, automating inventory tracking, payroll, and production planning.

• Built cross-platform desktop and web applications using WPF and ASP.NET, enabling seamless business operations across locations.

• Deployed scalable web application on AWS EC2 and RDS, ensuring 99.9% uptime and reducing hosting costs by 25%.

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