I build software products from idea to production.
I’m Sergey Shinkarenko, a software product builder based in Prague. I design and build MVPs, web applications, SaaS products and n8n automations for startups and small businesses — taking ownership from the initial idea through development and beyond launch.
Services
What I can do for you
- 01
MVP and Product Development
From an idea to a first version real users can rely on.
- 02
Web Applications and SaaS
Web products and internal tools that are fast, secure and maintainable.
- 03
n8n Automation and API Integrations
Connecting the services you already use and removing repetitive work.
- 04
Product Maintenance and Technical Ownership
A responsible owner for a product that is already running.
- 05
Product Discovery, Requirements Analysis and Delivery Coordination
Turning business needs into clear requirements — and seeing them delivered.
Selected work
Projects
Auto Marketplace
A white-label marketplace for used cars and motorcycles: a public site, a back office and a mobile app on one API. Try the live demo.
Orqflow
A native mobile manager for self-hosted n8n: check workflows and executions, and stop a runaway job, from your phone.
AI Content Factory
Nine n8n workflows that take an educational social-media brand from topic research to carousels published on Instagram, Facebook and LinkedIn.
AI Telegram Automation
Promotional emails turned into approved Telegram posts, and a customer bot with an AI consultant, delivery calculator and order capture.
Subscriptions and Payments for a Telegram SaaS
A Telegram bot turned into a complete payment and activation funnel: Stripe checkout, PDF invoices, team alerts and accounting without manual steps.
Approach
Founder-led, from first call to long-term support
- Direct communication
- You talk to the person who plans and builds the product, not to an account manager.
- Product thinking first
- Requirements, priorities and trade-offs are settled before code, so effort goes where it matters.
- Clear scope, pragmatic engineering
- Agreed scope, small verifiable steps and maintainable solutions rather than clever ones.
- Specialists when needed
- For work outside my core — design, mobile platform specifics, security reviews — I involve trusted specialists and coordinate them.
- Long-term ownership
- After launch, the product keeps a responsible owner: maintenance, monitoring and iterative improvement.
About
I am a hands-on software product developer. I take products from an idea through requirements, architecture and delivery to production — and stay responsible for them afterwards.
Have a product in mind?
Tell me what you want to build or improve. The first conversation is about your problem, not a sales pitch.
Get in touch