CapRizZzeAI Product EngineerStart a conversation

Independent product engineering · 2026

Software for businesses that have outgrown simple tools.

I design and ship production SaaS, AI workflows, payment systems and data platforms — from the first business rule to reliable operation.

Explore selected work GitHub profile
Selected systems03 / production

Different markets. The same engineering principle: turn a complex business process into one operable product.

  1. 01
    TenderBotAI procurement intelligence
  2. 02
    Notes of a NumerologistMulti-channel commerce
  3. 03
    Alliance NatureHeadless commerce
AI & dataPaymentsOperations
03production platforms
Web + Telegramcustomer channels
AI · Data · Paymentsoperational systems

Selected evidence from live products and project documentation.

Selected work

Products you can inspect, not promises you have to imagine.

Real product surfaces, complete business workflows and the engineering decisions required to operate them.

01AI procurement intelligence

TenderBot

A production platform that turns thousands of procurement opportunities into a ranked, explainable pipeline for bid teams.

  • 109K+ tenders indexed
  • AI relevance scoring
  • Document analysis
Read case study Live product
System logic01 / 03

Prioritizes procurement opportunities before a bid team spends time opening and reading every tender.

  1. 01Company profile
  2. 02Source sync
  3. 03Relevance score
  4. 04Document analysis
  5. 05Bid decision

Profile-based matching instead of keyword-only search

Explainable 0–100 relevance with clear decision states

Tender documents and archives prepared for deeper analysis

Multiple search directions managed as reusable company profiles

109K+
tenders indexed
52K+
active tenders
135
search areas
02Multi-channel commerce

Notes of a Numerologist

A paid personalized-report platform spanning web, Telegram, payments, wallet balances, durable generation and PDF delivery.

  • Web + Telegram
  • YooKassa + Stars
  • Reports & PDF
Read case study Live product
System logic02 / 03

Runs one paid personalized-product workflow across the website, Telegram and downloadable reports.

  1. 01Product choice
  2. 02Identity & payment
  3. 03Calculation
  4. 04Durable generation
  5. 05Report delivery

Structured calculation catalog for different customer needs

Website and Telegram share one backend product model

YooKassa, wallet balance and Telegram Stars payment paths

Owner-scoped purchases, reports, retries and PDF delivery

02
customer channels
03
payment paths
37
schema revisions
03Headless commerce

Alliance Nature

A custom storefront connecting product discovery, editorial content, checkout and operations through a headless CMS stack.

  • Directus CMS
  • Catalog & checkout
  • Content journal
Read case study Live product
System logic03 / 03

Combines product discovery, educational content and checkout in one headless commerce experience.

  1. 01Goal discovery
  2. 02Catalog search
  3. 03Product & content
  4. 04Cart & checkout
  5. 05CMS operations

Searchable, filterable catalog organized around customer intent

Editorial journal connects education to product discovery

Directus and PostgreSQL power independent content operations

Documented checkout, SEO and production-hardening roadmap

12
catalog concepts
02
content surfaces
CMS
operated in Directus

Engineering expertise

Responsibility across the whole product system.

Workflow, architecture, delivery and safe operation — treated as one product responsibility.

01

Product architecture

Business rules, user journeys and system boundaries translated into a delivery plan.

02

Full-stack delivery

React and Next.js interfaces backed by FastAPI or Node.js services and clear contracts.

03

Data & automation

Ingestion, normalization, scoring, durable jobs, document processing and AI workflows.

04

Production ownership

Payments, entitlements, recovery, observability, deployment and safe operating procedures.

Core stack

Next.js · React · TypeScript · FastAPI · Node.js · PostgreSQL · Prisma · Directus · Docker · Telegram · YooKassa

Ways to work together

Start with one valuable workflow. Build toward the platform.

01

Workflow audit

Process map, automation opportunities, architecture and delivery roadmap.

€500–€1,200
02

AI MVP sprint

A bounded working product around one high-value operational workflow.

€3,000–€8,000
03

Production platform

Authentication, data, AI, payments, admin tools and deployment.

€8,000–€25,000+