01 Backend Developer & Freelancer

Backend
Dev

Backend developer & freelancer specialising in Go, Java, Groovy, Perl, data extraction, Telegram bots, and AI integration.

Currently building

chorus

6
agents
30
routes
1
install
∞
workflows
Available for work
02

Featured Projects

Open-source tools & client solutions.

chorus
Claude Code

chorus

Open-source cross-agent plugin mesh connecting Claude Code, OpenCode, Gemini CLI, Codex, Cursor, and Kilo into a full 6×6 delegation network. One install gives any agent the ability to delegate tasks to the other five — parallel reviews, council mode, root-cause debugging.

Claude Code OpenCode Gemini CLI Codex Cursor
Rule-Based Telegram ChatBot
Go

Rule-Based Telegram ChatBot

Professional-grade custom Telegram bot powered by JavaScript/Go/Java for autoresponder efficiency and business automation. Supports lead generation, crypto bots, appointment booking, and e-commerce workflows.

Go JavaScript Java Telegram API SendPulse
ShoPogoda
Go

ShoPogoda

Production-ready Telegram weather bot with real-time forecasts, air quality, smart locations, and multi-language support (UA/EN/DE/FR/ES). Enterprise features: custom alerts, Slack/Teams integration, RBAC, Prometheus/Grafana monitoring.

Go Telegram API PostgreSQL Redis Docker
KeepinCRM Automation
Go

KeepinCRM Automation

Go daemon fully automating a Ukrainian e-commerce CRM workflow: moves deals through the sales funnel based on Nova Poshta delivery statuses, generates fiscal receipts via Checkbox (ПРРО), and sends automated SMS via TurboSMS.

Go SQLite REST API Nova Poshta Checkbox
DataScrapexter
Go

DataScrapexter

Professional Go-powered web scraping framework with anti-detection, captcha-solving, proxy rotation, and distributed processing. Outputs structured data in JSON, CSV, or database formats via customizable YAML/JSON configurations.

Go YAML JSON Proxy Rotation Anti-Detection
WebPageInvestigator
Go

WebPageInvestigator

All-in-one web page analysis tool for automated data extraction, transformation, comparison, and SEO analysis. Handles dynamic content with headless browsers and outputs to JSON, CSV, or custom formats.

Go Headless Browser CSS Selectors JSON CSV
03

Selected Work

Enterprise contracts & long-term engagements.

01 vending-esp32-monobank — IoT Coffee Machine Monobank Acquiring Controller Solo Embedded & Cloud IoT Architect Sep 2026 02 site-security-cleanup — Malware Remediation and CMS Hardening Solo Security Engineer / Webmaster Sep 2026 03 fastshop — Fast Mobile-First OpenCart Store Solo Creator / Architect Sep 2026 04 crmbridge — Shop, Telephony and Parcels in One CRM Solo Creator / Architect Sep 2026 05 fiscalgate — Payments to Checkbox Fiscal Receipts, Exactly Once Solo Creator / Architect Sep 2026 06 feedsync — Supplier Feeds to Marketplace Price Lists Solo Creator / Architect Sep 2026 07 Luxury Fashion E-commerce (Shopify) Freelance Backend Engineer / AI Integration Sep 2026 — ongoing (Stage 1 of 3) 08 bid-triage — AI Bid-Noise Filter, Built to Order Solo Architect (Bespoke Engagement) Sep 2026 (concept, available to build) 09 v2v-demo — Multi-Vertical Voice AI Concierge for Telegram Solo Creator / Architect Aug–Sep 2026 (ongoing) 010 landing-turnkey — Turnkey Landing Page Designs Solo Designer / Developer Aug 2026 011 ragline — AI/RAG Telegram Support-Bot Backend Solo Creator / Architect Aug 2026 012 subgate — Telegram Paid-Channel-Access Backend Solo Creator / Architect Aug 2026 013 geopulse — GPS Fleet-Tracking Backend Solo Creator / Architect Aug 2026 014 slotwise — Appointment Booking Backend Solo Creator / Architect Aug 2026 015 fleet-crm — Fleet/Logistics CRM Backend Solo Creator / Architect Aug 2026 016 tumanomir — CLI for Measuring AI-Spec Ambiguity Solo Creator / Architect Jul 2026 (25 days) 017 fix-review — Multi-Agent PR Review Pipeline Solo Creator / Maintainer Jun — Aug 2026 (ongoing) 018 Sales CRM Platform Freelance Full-Stack Engineer / AI Integration Mar — Jun 2026 019 Gym Operations SaaS Freelance Full-Stack Engineer / AI Integration Mar — Jun 2026 020 Ukrainian Consultancy Solo Architect / Engineer / DevOps Apr — Jun 2026 021 Micromobility Startup Freelance Backend Engineer / AI Integration May — Jun 2026 022 CloudBees CD/RO Senior Software Engineer / Plugin Developer Nov 2018 — May 2019 023 PortaSwitch / PortaOne Team Lead / Senior Backend Developer Mar 2013 — Mar 2018 024 Mail.UA System Architect / Head of System Development Department Jun 2011 — Jun 2014
04

Latest Writing

Go, AI tooling, freelance engineering.

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Inverting the Asymmetry: Why AI Detectors Are Dead, and How to Make Spammers Pay With Their Time Latest Post
methodology September 09, 2026

Inverting the Asymmetry: Why AI Detectors Are Dead, and How to Make Spammers Pay With Their Time

The cost of synthesizing plausible-looking content has collapsed to near zero, while the cost of verifying it stayed stubbornly human, slow, and expensive. This isn't abstract theory — it's a concr...

aispamsecurityhiring
Read More →

Inverting the Asymmetry: Why AI Detectors Are Dead, and How to Make Spammers Pay With Their Time

The cost of synthesizing plausible-looking content has collapsed to near zero, while the cost of ...

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Tumanomir: What Actually Got Built After "Source of the Unknown"

A methodology is a hypothesis until something runs it against real specs and reports what broke. ...

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Source of the Unknown: Stochastic Engineering and Precision Measurement in the Age of AI Agents

For decades we worshipped the Single Source of Truth like a sacred artifact. Then autonomous AI a...

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The Law of Conservation of Vibe: Why AI is an Amplifier of Your Brain, Not a Replacement

Anyone who has tried writing code with modern AI agents knows that feeling of pure euphoria. You ...

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Cutting AI Agent Costs 70–85% with a Hybrid Sonnet → Haiku + OpenRouter Architecture

Our platform runs 11 AI subagents to automate development workflows — code review, test generatio...

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chorus: a cross-agent plugin mesh for AI coding CLIs

Most AI coding tools are designed like islands.

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DataScrapexter: Architecture of a Production Go Scraping Framework

Most scraping tools are either a thin wrapper around an HTTP client or a full browser automation ...

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Claude Code in Freelance: How I Ship Faster Without Cutting Corners

Six months ago I started using Claude Code as a primary development tool on client work. Not as a...

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Automating KeepinCRM: From Manual Order Tracking to Zero-Touch Fulfillment

The client runs a small e-commerce operation — handmade goods, 50 to 80 orders on a busy day. Eve...

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Vibe Coding Without Vibes: Keeping Engineering Standards While Using AI

Vibe coding — the practice of describing what you want and letting an AI generate the implementat...

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Jekyll + Polyglot on GitHub Pages: What Actually Works in 2026

I spent more time than I should have getting jekyll-polyglot working correctly on GitHub Pages. T...

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AI as a Development Tool

“…the greatest part of the questions and controversies that perplex mankind depending on the d...

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© 2026 Valentyn Solomko Backend · AI · Automation GitHub ↗