Welcome to my portfolio.

CloudBees CD/RO Platform Component Development

Categories: Information Technology (IT), Software Company, Software Development, Technology Project duration: 6+ months Project cost: $48,000 Project started on: 11-18

Project description:

Developed enterprise DevOps platform components serving a lot of Fortune 500 clients. Created 50+ reusable plugins using Java, Groovy, and Perl, reducing code duplication by 60%. Implemented automated testing frameworks, achieving 95% coverage. Challenges: integrating with legacy systems and maintaining backward compatibility. Solution: designed adapter patterns and comprehensive integration test suites, and established Agile practices, improving delivery efficiency by 35%.

  • Engineered enterprise-grade plugins for CloudBees DevOps platform focusing on Analytics, CI/CD, and Release Orchestration.
  • Spearheaded major system refactoring initiative creating reusable component packages and Chrome extension.
  • Architected and implemented core platform components improving system scalability.
  • Led requirements gathering and analysis through direct customer collaboration.
  • Optimized code performance and implemented automated testing frameworks.
  • Established Agile SCRUM practices improving team delivery efficiency.
  • Conducted technical interviews for engineering candidates.
  • Maintained effective communication with cross-functional teams and stakeholders.

Technical Environment:

  • Languages & Frameworks: Java, Groovy, Go, Perl.
  • DevOps Tools: Docker, Kubernetes, Helm, Ansible, Terraform.
  • CI/CD: CloudBees CI (Jenkins), CloudBees SDA (ElectricFlow), GitLab CI.
  • Artifact Management: JFrog Artifactory, Nexus.
  • Infrastructure: BigIp, OctopusDeploy.
  • Version Control: Git (GitHub, GitLab, Bitbucket).
  • Methodologies: Agile SCRUM, Feature Management.

New task Framework

Telecom BSS Billing Core Components

Categories: Telecommunications, Technology, Software Development, Business Services & Consulting, Information Technology (IT) Project duration: 6+ months Project cost: $40,000 Project started on: 03-13

Project description:

Led Kyiv development team over 5+ years building core components for PortaSwitch BSS, Billing, and Softswitch platform serving diverse Communication Service Providers: MNO/MVNO/MVNE, cable/MSO, fixed-line, broadband, VoIP, satellite, and IoT providers. Architected billing solutions using Perl on high-availability Linux infrastructure with MySQL/PostgreSQL databases and established innovative “After Action Review” methodology, improving team performance and project delivery outcomes. Mentored junior developers, accelerating technical growth, facilitated cross-departmental collaboration, and streamlining development workflows. Directed multiple technical initiatives using Agile methodologies with YouTrack/Confluence project management and delivered enterprise-grade BSS solutions, ensuring 99.9% system reliability for critical telecommunications infrastructure serving millions of end users globally.

  • Led development team building core components for PortaSwitch BSS and Billing platform.
  • Architected and implemented telecommunications solutions for MNO/MVNO/MVNE providers.
  • Established "After Action Review" process improving team performance and project outcomes.
  • Mentored junior developers accelerating their technical growth and productivity.
  • Facilitated cross-departmental collaboration streamlining development workflows.
  • Managed integration of VoIP, IoT, and broadband service components.
  • Directed technical initiatives for Communication Service Provider solutions.

Technical Environment:

  • Development: Perl, Linux, PortaSwitch.
  • Databases: MySQL, PostgreSQL.
  • Telecommunications: VoIP, SIP, BSS.
  • Infrastructure: High Availability Systems.
  • Version Control: Git.
  • Project Management: Youtrack, Confluence.
  • Methodologies: Agile, After Action Review.

Applications_and_benefits

Enterprise Email Platform Complete Redesign

Categories: Technology, Software Development, Business Services & Consulting, Information Technology (IT) Project duration: 6+ months Project cost: $20,000 - $35,000 Project started on: 06-11

Project description:

Architected complete redesign of enterprise email service platform mail.ua as System Architect and Head of System Development Department. Managed 20+ backend engineers through comprehensive platform transformation over 3 years. Established complete development lifecycle, including design, coding, and testing standards, transitioning from Waterfall to Agile methodologies. Implemented service operations framework using Perl, MySQL/PostgreSQL, Linux/Apache infrastructure supporting SMTP/POP3/IMAP protocols. Created automated testing and deployment pipelines, significantly reducing delivery time. Developed technical documentation standards and best practices. Challenges: enhancing scalability and performance while maintaining 24/7 service availability for millions of users. Solution: implemented robust monitoring with Nagios, custom solutions, and established comprehensive SDLC processes, and delivered an enterprise-grade email platform with improved system reliability, enhanced performance, and streamlined maintenance operations serving 1M+ active users.

  • Architected and led complete redesign of enterprise email service platform: mail.ua.
  • Managed backend development department overseeing 20+ engineers.
  • Established comprehensive development lifecycle including design, coding, and testing standards.
  • Implemented service operations framework improving system reliability and maintenance.
  • Led migration to new architecture enhancing scalability and performance.
  • Created automated testing and deployment pipelines reducing delivery time.
  • Developed technical documentation standards and best practices.

*Technical Environment:

  • Development: Perl, Shell Scripting.
  • Databases: MySQL, PostgreSQL.
  • Infrastructure: Linux, Apache.
  • Email Protocols: SMTP, POP3, IMAP.
  • Monitoring: Nagios, Custom Solutions.
  • Version Control: SVN.
  • Project Management: Redmine.
  • Methodologies: Waterfall to Agile Transition.

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