s
serg19xx

Sergiy K

@serg19xx

Web Application Developer

Canada
Russian, English, Ukrainian
About me
I build full-stack web applications with a strong focus on SaaS architecture and real-world usability. My work goes beyond traditional development—I design and implement complete systems, from frontend interfaces to backend APIs and infrastructure. I focus on building systems that are structured, maintainable, and ready for growth.... Read more

Skills

s
serg19xx
Sergiy K
Offline • 

See my services

Bug Fixes
I will write and fix custom javascript PHP or node js scripts
From$15 / projectMore details

Work experience

Self_Employed

Full-Stack Developer / SaaS Builder

Self Employed • Self-employed

Feb 2012 - Present • 14 yrs 6 mos

Designed and developed full-stack SaaS applications using Vue 3 and PHP. Built REST APIs with authentication and modular architecture. Implemented task management systems with scheduling and Gantt visualization. Developed role-based systems and multi-tenant architectures while integrating third-party services like SendGrid, Twilio, and n8n workflows. Set up deployment pipelines using Docker and VPS infrastructure.