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Oleksandr L
@lozitskyi
Senior Full Stack Software Engineer, Python, FastAPI, React, AWS
Spanien
Englisch
Über mich
I’m a Senior Full Stack Software Engineer with experience building scalable web platforms, SaaS products, backend systems, APIs, and cloud-based applications for startups and growing businesses.
I focus on clean, maintainable code, performance optimization, and production-ready solutions.
I can help with:
• Full Stack Web Development
• Backend API Development
• SaaS Applications
• Python Automation & Scripts
• Cloud Infrastructure & Deployment
• Database Design & Optimization
• AI Integrations
• System Architecture
• Bug Fixing & Performance Improvements
Kompetenzen
Oleksandr L
offline •
Meine Dienstleistungen
API & Integrationen
I will develop scalable python fastapi backend apis
Full-Stack-Webanwendungen
I will build modern full stack web applications
Portfolio
Arbeitserfahrung
Senior Full Stack Software Engineer
Self Employed • Freiberufler
Jan 2019 - Present • 7 yrs 5 mos
Designed and developed scalable full-stack applications using Python FastAPI, React/Next.js, PostgreSQL, Redis, Docker, and Nginx. Built REST APIs, CI/CD pipelines with GitLab CI/CD, cloud infrastructure on AWS/DigitalOcean/Hetzner, and automated deployment workflows. Worked on VPN infrastructure automation using WireGuard, secure backend systems, reverse proxies, SSL configuration, and modern frontend architectures. Focused on performance, scalability, cloud networking, and DevOps practices.
