Full-Stack
Engineer
Building SaaS & AI Tools
I Build Production SaaS From Zero to Launch
Resilient data pipelines, bank-grade security, and AI-augmented automation that works in production.
I build complete SaaS products from zero to production.
React 19 | Next.js 16 | TypeScript | AI Integration
Full-Stack
Engineer
Building SaaS & AI Tools
I Build Production SaaS From Zero to Launch
Resilient data pipelines, bank-grade security, and AI-augmented automation that works in production.
I build complete SaaS products from zero to production.
React 19 | Next.js 16 | TypeScript | AI Integration
Technology Stack
Building products, not just features.
Full-Stack Engineer shipping production SaaS on React 19 + Next.js 16. I build complete systems end-to-end: encrypted secrets managers, real-time financial dashboards, AI-powered automation bots, and multi-tenant B2B platforms. Enterprise patterns like RBAC and audit logging are standard in my work.
Recent highlight: Cut API latency 40% for a Ukrainian tech startup through strategic caching and query optimization. I work across TypeScript and Python, deploy with Docker, and integrate AI (OpenAI, Claude) into production apps.
My toolkit:
Backend Engineering
Node.js, Express.js, REST APIs, TypeScript, RBAC, Multi-tenancy, Audit Logging
Frontend Development
React.js, Next.js 15, TypeScript, Framer Motion, Tailwind CSS, Responsive Design
Database & Data
PostgreSQL, MongoDB, Redis, Prisma ORM, SQL Optimization, ETL Pipelines
Cloud & DevOps
AWS (EC2, S3, RDS, Lambda), Docker, Nginx, VPS, GitHub Actions CI/CD
AI & Automation
OpenAI/Anthropic APIs, n8n Workflows, RAG Agents, Prompt Engineering
0+
Projects Shipped
0+
SaaS Products
0+
Happy Clients
Solutions That Drive Results
Modern Web Applications
Ship production SaaS with React 19 + Next.js 16. High-performance dashboards, internal tools, and marketing sites—with real-time features, SEO optimization, and polished animations.
Reliable Data Pipelines
Stop losing data to broken imports. I build ETL pipelines that move multi-GB datasets reliably—reducing ingestion errors by 90% and cutting processing time by 75%.
Scalable & Secure Infrastructure
Enterprise-grade backend systems built for 99.9% uptime. RESTful APIs and microservices handling 15k+ daily requests with minimal latency—Node.js, Express, TypeScript.
High-Performance Databases
Slow queries killing your app? I optimize PostgreSQL, MongoDB, and MySQL through smart indexing, schema refactoring, and query tuning—typically improving performance by 25-40%.
Cost-Effective Cloud Solutions
Deploy to AWS with confidence. EC2, S3, RDS, Lambda—containerized with Docker, automated with GitHub Actions, monitored for reliability. Cut your infrastructure costs by up to 30%.
Intelligent Product Features
Add intelligence to your product. I integrate OpenAI, Anthropic, and custom ML models into production apps—with proper prompt engineering, error handling, and cost optimization.
EnvVaultSecrets Management, Simplified
Stop committing .env files. EnvVault provides bank-grade encryption for your environment variables—with team collaboration, audit logging, and CI/CD integration built in.
AES-256
Client-side encryption
RBAC
Team permissions
CI/CD Ready
Easy integration
On-Demand Development
Fixed-scope, high-impact projects for startups that need to move fast. Clear timelines, no surprises.
MVP Development
Go from idea to working product in 4-6 weeks. Full-stack development with React 19 + Next.js.
4-6 weeksAI Integration
Add OpenAI or Claude to your product. Proper prompt engineering, error handling, and cost optimization.
1-2 weeksAPI Development
RESTful endpoints, authentication, and documentation. Production-ready with tests and deployment.
1-2 weeksDatabase Optimization
Speed up slow queries. PostgreSQL and MongoDB indexing, schema design, and performance tuning.
3-5 daysProfessional Journey
Full-Stack Engineer
Freelance Consultant
- ›Built 3 production SaaS products from scratch with React 19 + Next.js 16: secrets manager (EnvVault), financial dashboard with AI, and HR automation platform.
- ›Cut API response times 40% for UMICRON (Ukrainian tech startup) through Redis caching, query optimization, and load balancing architecture.
- ›Designed ETL pipelines using Node.js and Python for legacy system migrations—reduced data ingestion errors by 90% across multi-GB datasets.
- ›Integrated OpenAI and Claude into production apps with proper prompt engineering, error handling, and cost optimization.
- ›Established CI/CD pipelines with Docker and GitHub Actions for all projects. Deployed to AWS and VPS environments.
National Aviation University
Computer Science - Bachelor of Science (In Progress)
Focus: Distributed systems, cybersecurity, databases, and applied machine learning. IBM Data Engineering certified.
Want to know more about my background?
View LinkedInFeatured Work
A selection of personal and client projects showcasing full-stack development, AI integration, and SaaS architecture.
FinanceAI Dashboard
Real-time stock analysis platform with OpenAI-powered market insights, WebSocket streaming, and interactive 3D visualizations. Full Supabase backend with Redis caching.
EnvVault
Complete secrets management SaaS with AES-256 encryption, role-based access control, team collaboration, and comprehensive audit logging. Production deployed.
AI Ghostwriter Bot
Telegram userbot that intercepts DMs, generates AI draft replies via Claude/GPT-4 through OpenRouter, and awaits human approval before sending.
HR Automation Platform
Event-driven recruitment SaaS with n8n workflow automation. CV parsing, candidate tracking, and webhook-based async job processing.
Fleet Tracking System
Real-time vehicle monitoring with interactive maps and live location updates. WebSocket-powered for instant position sync across all connected clients.
B2B Data Platform
Multi-tenant company intelligence platform with automated PDF report generation, web scraping, and admin dashboard. Built for an international client.
Interested in working together? Let's discuss your project.
Schedule a CallWhat Clients Say
"Volodymyr was brought on to address backend challenges but quickly became integral to our team. His expertise in optimizing PostgreSQL queries and redesigning ETL pipelines reduced query times by 60-70%, significantly boosting performance."
*Translated from Ukrainian*
Andrii K.
Co-Founder, Umicron
"Built us a real-time financial dashboard with AI insights in just 5 weeks. The WebSocket integration was flawless, and the OpenAI features he added give us a real competitive edge. Highly recommend."
Michael R.
CTO, US Startup
"We needed someone who could build fast without sacrificing quality. Volodymyr shipped our MVP ahead of schedule and it just worked. Great communication throughout the project."
Sarah L.
Founder, Tech Startup
Let's Work Together
Book a Discovery Call
Let's discuss your project, timeline, and how I can help. 30 minutes to explore if we're a good fit.
Send an Email
volodymir.shkarban@gmail.com
Connect on LinkedIn
Let's grow our professional network
Follow on GitHub
Check out my open source work
Prefer async? Drop me an email at volodymir.shkarban@gmail.com and I'll get back to you within 24 hours.