Reliable Software That Grows With You
Senior Software Engineer helping startups and businesses build reliable software, optimize performance, and scale with confidence.
Services
Custom Web Application Development
Full-stack Rails applications tailored to your business needs — from MVPs to production-grade systems with robust architecture.
API Design & Development
RESTful APIs, third-party integrations (Stripe, Twilio, OAuth), and well-documented endpoints that your team and partners can rely on.
Performance Optimization
Database query optimization, N+1 elimination, caching strategies, and profiling to make your Rails app faster and more efficient.
Legacy Code & Maintenance
Refactoring, Rails upgrades, stabilizing existing applications, and improving test coverage to reduce bugs and technical debt.
Portfolio
Database Visualization Tool
Built an interactive schema visualization tool for Rails developers. Introspects models, associations, and columns, then generates a self-contained HTML entity-relationship diagram.
Enterprise Network Dashboard
Cloud-based management platform for Cisco enterprise customers. Achieved 10x performance improvement on bulk route updates by eliminating N+1 queries and implementing caching.
Standards Data Platform
ETL pipelines processing 600k+ documents for an international standards organization. Delivered open-source gems downloaded 400k+ times with 5x faster data retrieval.
Political Campaign SaaS
Cost-effective digital toolbox for state and local political campaigns. Full-stack SaaS application with Stripe payments, Twilio messaging, and OAuth integration.
Docker Registry API
REST API for the open-source Docker registry authorization server Portus. Designed and implemented endpoints for user and token management with Swagger documentation.
Social Login Integration
OAuth/OpenID implementation for the enterprise Docker platform Portus. Added social login support with a Vue.js settings interface.
What Clients Say
"Andrei was a terrific help. He's very responsive, very professional, and tries to find the lease expensive solutions. I would recommend him highly."
Natan Daschle
CEO, Ruck.us
"It was great working with Andrei and under other circumstances, I would have continued the contract indefinitely. He was very understanding, worked great with the team, kept up with consistent communication, and delivered work in a timely fashion. Hope to work with him in the future!"
Joe Tebaldi
Founder, flexx
"Andrew is not only a good developer but also someone who is able to transform ideas and concepts into products, without needing to explain every step. Looking forward to work with him on next tasks."
Vadim Bauer
CTO, 8gears
How I Work
Discovery
We discuss your project goals, technical requirements, and timeline to make sure we're aligned.
Proposal
I deliver a clear scope, timeline, and fixed or hourly quote so there are no surprises.
Development
Iterative development with regular updates, demos, and open communication throughout.
Delivery & Support
Launch, documentation, and ongoing maintenance options to keep your app running smoothly.