01
Subscription billing & entitlements
Stripe subscriptions, access rules, customer portals and webhook handling built around your business model.
Stripe · Postgres · Webhooks
Software Engineer · Founder · Building Endous
I build software products and the systems behind them.
I'm Ihor—a software engineer building Endous, independent software products, and reusable capabilities that make both client work and startups faster to ship.
- 100%
- Job success
- 2,000+
- Upwork hours
- 20,000
- Meta ad launches / month
- Top Rated
- Upwork status
02 — Capabilities
What I build
Production systems, product infrastructure, and focused delivery.From scope through launch.
02
Internal tools & operations
Dashboards and operational platforms that replace scattered spreadsheets, manual steps and disconnected tools.
Next.js · Node.js · Postgres
03
Workflow automation
Reliable Node.js and n8n workflows connecting business systems, APIs, data and human approvals.
n8n · Node.js · APIs
04
SaaS foundations
Multi-tenant product foundations, background processing and serverless infrastructure designed for production.
AWS · Lambda · SQS
05
AI-assisted workflows
Structured AI workflows for generation, enrichment and operations—with traceability and human review where needed.
Claude · Agents · Automation
06
Storefronts & revenue flows
Storefronts and funnels with checkout, analytics, order routing and the integrations behind the sale.
Next.js · Stripe · Analytics
03 — Results
Selected results
20,000
Meta ad launches / month
Shipped an advertising operations platform at production scale
Built for a company generating $100M+ annually, the platform creates assets, renders video variations and launches campaigns across 30+ brands.
AdTech
~70
Automations built
Automated recurring operational workflows
Built Node.js and n8n automations, including a monthly invoicing process involving approximately 200 people.
Operations
5,000
Waitlist sign-ups / 3 months
Built launch infrastructure for early product growth
Shipped product and customer-data flows that supported approximately 5,000 waitlist registrations within three months.
Product
04 — Process
How I turn ideas into production
Whether I am building for a client or one of my own products, I define the outcome, ship the smallest useful milestone, and leave the system easier to operate.
- 01
Context & outcome
Start with the user, the business outcome, the current system, and the constraint that matters most.
- 02
Smallest milestone
I define the first deliverable, dependencies, risks, timeline and what stays out of scope.
- 03
Build & validate
You get reviewable progress, production-minded tests and short written updates throughout the build.
- 04
Launch & learn
Ship with documentation and operational visibility, then use real feedback to choose the next milestone.
05 — Building
The system I am building
Company · Endous
A product engineering company
Building Endous to help founder-led teams ship billing, automation, internal operations and production SaaS systems.
Ventures · Independent products
Software businesses I own
Turning repeated market problems and reusable engineering capabilities into focused products I can launch and operate.
Distribution · Personal brand
Sharing the work in public
Documenting the systems, decisions and lessons behind building services and startups—so the knowledge compounds into trust and distribution.
06 — Contact
Want to build something useful together?
Share the product, system or opportunity, what is currently blocked, and what outcome matters. I will suggest the smallest useful next step.
- Selected client work and startup collaborations
- Best fit: founders and product-led teams
- Remote, async-first collaboration