l
lozitskyi

Oleksandr L

@lozitskyi

Senior Full Stack Software Engineer, Python, FastAPI, React, AWS

Spain
English
About me
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... Read more

Skills

l
lozitskyi
Oleksandr L
Offline • 

See my services

API & Integrations
I will develop scalable python fastapi backend apis
From$200 / projectMore details
Full Stack Web Applications
I will build modern full stack web applications
From$300 / projectMore details

Portfolio

Work experience

Self_Employed

Senior Full Stack Software Engineer

Self Employed • Freelance

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.