Open to opportunities

Yevhen User

@yevhenuser

Message

Senior full-stack developer building scalable SaaS and AI-driven web products with React and Node.

Ukraine

Message

What I'm looking for

I’m looking for a product-focused team where I can build scalable SaaS/web apps end-to-end—owning API integrations, clean architecture, and performance optimization—while collaborating closely with product and design to deliver measurable business value.

I’m a Senior Full-Stack Developer with 6+ years of experience building SaaS, FinTech, Healthcare, AI-powered, and marketplace products. I focus on clean architecture, performance optimization, API integrations, and delivering modern user experiences that drive measurable business value.

At Nexora Labs, I developed and maintained scalable web applications with React, Next.js, TypeScript, and Node.js. I built complex dashboards and reporting/data visualization tools, integrated REST APIs and third-party services, implemented role-based access control, and optimized performance to reduce page load times and improve Lighthouse scores.

Previously at Cloudspire, I built healthcare web applications for appointment scheduling, patient management, and clinic operations, including scheduling systems, patient portals, and internal dashboards. Earlier, at Altavera Systems, I worked on a marketplace platform by delivering responsive customer-facing interfaces, integrating backend APIs, and improving user experience through Agile collaboration.

Experience

Work history, roles, and key accomplishments

Senior Full-Stack Developer

Nexora Labs

Oct 2023 - Jun 2026 (2 years 8 months)

Developed and maintained scalable SaaS web applications for business process automation and analytics using React, Next.js, TypeScript, and Node.js. Built dashboards and REST APIs, implemented role-based access control, and optimized performance to reduce page load times.

React Next.js TypeScript PostgreSQL REST APIs Role Based Access Control Authentication Authorization Performance Optimization Data Visualization Git Third Party Integrations Lighthouse

Full-Stack Developer

Cloudspire

Jan 2021 - Sep 2023 (2 years 8 months)

Built healthcare SaaS web applications for appointment scheduling, patient management, and clinic operations. Developed scheduling systems, patient portals, internal dashboards, and REST APIs backed by PostgreSQL and authentication systems.

React TypeScript PostgreSQL Redux REST APIs Backend Services Authentication Scheduling Systems Dashboards Patient Portal

Junior Front-End Developer

Altavera Systems

Feb 2019 - Dec 2020 (1 year 10 months)

Developed and maintained a marketplace platform connecting service providers and customers. Built responsive customer-facing web interfaces, integrated backend APIs, and implemented business workflows while optimizing user experience.