For Marketplace Sellers — Marketplaces | EXCEL ALEXEY
Available for new projects

Automation tailored to your business, not a template

Marketplaces · Construction · Accounting — each vertical has its own tasks and tech stack. Pick yours below.

Choose your vertical → All case studies

Prototype in 2-3 days, fixed price, full source code ownership

20+ projects since 2022 Post-delivery support Prototype in 2-3 days
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PythonGoogle Apps Script Excel VBANode.js / Fastify MariaDB / SQLiteStreamlit aiogram 3Telegram Bot API Wildberries APIOzon Seller API Yandex Market APIFacebook Marketing API REST / SOCKS5Cloudflare Tunnel Raspberry Pi

Choose your vertical

Each vertical has its own tasks, stack, and metrics. Pick yours — see case studies, prices, and approach tailored to your business.

Wildberries · Ozon · Yandex Market · Amazon

Marketplace sellers

Per-SKU unit economics, multi-account reports in one click, ads and stock control.

  • Data consolidation via marketplace APIs
  • Profitability calculation per SKU
  • Ads automation and listing optimization
Cases & prices →
Contractors · Developers · Renovation

Construction companies

Estimates, acts, contracts in one click. Project and subcontractor tracking. Workflow without heavy ERPs.

  • ERP for projects and clients
  • Auto-generated estimates and acts
  • Mobile access from the site
Cases & prices →
Outsourcing · In-house finance

Accounting & finance

Reconciliations 100x faster, bank statement parsing, ERP imports, P&L dashboards for owners.

  • Automatic bank statement parsing
  • Vendor reconciliations
  • Cash flow and P&L dashboards
Cases & prices →

Don't see your vertical? Marketing, retail, manufacturing, HR, logistics — get in touch, we'll figure it out. Get a quote →

Sound familiar?

  • Managers spend 2 hours a day copying data from seller portals
  • Per-SKU unit economics live in Excel with rounding errors
  • Ads in WB / Ozon — separate report, separate headache
  • Orders from 4 accounts are merged manually for 20 minutes
  • Marketplace APIs constantly throw 429 — throttling
  • Stock and prices need editing in each portal separately

What marketplace automation delivers

Time
Data consolidation from 5 accounts: 2-3 hours/day → 5 minutes. One click — all SKUs for 31 days.
Accuracy
Per-SKU profitability calculation with cent-level precision — commissions, logistics, ads, taxes accounted for.
Ads control
Clear ad spend / revenue ratio per SKU — see which work in profit and which lose money.
No throttling
Server architecture with proxies and retry logic. API limits stop being your problem.
Scales easily
Connecting a new account or marketplace — done in a day, no rewrites.
Team-ready
Managers work in one dashboard instead of 5 different portals.

Marketplace packages

Starter
from $400
Timeline: 3-5 days
  • One account (Wildberries, Ozon, or YM)
  • Basic sales and profitability report
  • Deployed to your Google Sheets
  • 2 weeks of support
Choose →
Standard
from $1,000
Timeline: 1-2 weeks
  • Up to 5 accounts / any marketplaces
  • Per-SKU unit economics + ad report
  • Order and stock consolidation
  • Documentation + video guides
Choose →
Server architecture
from $1,800
Timeline: 3-4 weeks
  • Python + MariaDB on VPS, no limits
  • Proxies and API retry logic
  • Web panel for managers
  • Telegram notifications
Choose →

Free: unit economics calculation for your top SKU

Send a product link — within 30 minutes I will reply with: real margin including all commissions, logistics, and ads. If profitable — I will explain how to scale. If not — what to change.

Request calculation →

How we work together

01
Brief
3-5 questions via the bot in 5 minutes. No "let us get acquainted" calls.
02
Plan
Written spec with milestones, timeline, and fixed price.
03
Build
Prototype in 1-3 days, finished system in 1-2 weeks. Demo at each stage.
04
Deploy
Turnkey delivery + documentation + 2 weeks of free support.

Portfolio · 20+ automation projects

Reviews

★★★★★

Our managers used to spend 2 hours a day copying data from the WB seller portal. Now the profitability report opens with one click. Paid back in a month.

WS
— Wildberries seller
Apparel & footwear, $80k+/month revenue
★★★★★

We migrated from Google Sheets to a proper database. The full order extraction from 4 accounts used to take 20 minutes — now it is 2-3. No more API throttling.

EC
— Electronics retail chain
4 stores on Yandex Market
★★★★★

Tailored ERP for my construction business, exactly as I asked, no bloat. Estimates, acts, contracts — all generated with one click. Runs on a Raspberry Pi, payback in a couple of months.

CC
— Construction company
Kaliningrad, Russia

Frequently asked questions

How long does a project take?
Prototype — 1-3 days, a complete system — 1-2 weeks depending on complexity. ETL systems and custom ERPs — 3-6 weeks.
What technologies do you use?
Python, Google Apps Script, Excel VBA, Node.js (Fastify/Express), SQL/MariaDB/SQLite, aiogram 3, REST APIs of marketplaces (Wildberries, Ozon, Yandex Market, Amazon), Streamlit, Telegram Bot API.
How do you work?
Remotely worldwide. I work with individuals and businesses. Payment via bank transfer or cryptocurrency. Engagement details are agreed individually.
Who owns the code?
The client owns it fully. After payment I hand over source code, access, documentation, and video tutorials. No subscriptions or vendor lock-in.
Is there support after delivery?
2 weeks of free support and minor changes are included. After that — hourly rate or monthly retainer.
Can you integrate with ERPs like 1C, SAP, or QuickBooks?
Yes: via REST API, OData, Excel/CSV export, or direct database connection. ERP integration with marketplaces, CRMs, and Telegram is feasible.
How much does it cost?
Depends on scope: simple Google Sheets automation — from $200, custom CRM — from $1,000, ETL system with backend — from $1,800. Exact price — after the spec.

Guarantees

Transparency
Written spec before start. Fixed price. Demo at every stage.
NDA
I sign non-disclosure agreements. Access — only what is needed for the task.
Source code
The code is fully yours. No vendor lock-in or subscriptions on my side.
Support
2 weeks of free changes. After that — hourly rate.
Experience
20+ completed projects since November 2022. Excel, Python, marketplaces, CRM.
Deadlines
Prototype in 1-3 days. Miss the deadline — compensate with extra hours of work.

Automation cost estimator

Excel / VBA
Google Sheets automation
Telegram bot
Custom CRM
ETL / API integrations
Dashboard / BI
Basic
Medium
Complex
Standard (2 weeks)
Fast (1 week)
Urgent (3-5 days)
Estimated price
from $200
Exact price — after the spec. The estimator shows a reference range.
Get exact quote →

Hi, I am Alexey

I build business automation since November 2022. Over this time — 20+ projects: from Excel macros to CRM systems with marketplace integrations.

How I work: tell me the task, I clarify the details, then send a written spec with a fixed price and deadline. No long calls, no multi-page proposals.

Prototype on day 2-3 — you review it and tell me what to adjust. I deliver the final version with documentation and short videos for your team.

Message me on Telegram or submit a request below. I reply within a day.

Get a quote Message on Telegram

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