56M+ organic installs
Nicegram GPL-2.0
Privacy-first Telegram client with superior UX, open source on iOS, Android, and desktop. Grown to tens of millions of users organically — no paid acquisition.
sergey@svlab ~ % whoami
Sergey Sheleg
Technical entrepreneur · products used by millions
Technical entrepreneur in Warsaw, Poland. 13 years building and launching products used by millions of people — mobile, desktop, web. I stay in the technical work: AI integrations and agent systems, marketing and research tooling, growth and retention mechanics, and the go-to-market that puts it all in front of users. SV Lab is where I ship it.
- Product engineering
- AI integrations
- Agent systems
- Marketing & research tools
- Growth & retention
- Go-to-market
// NOW: making agents build products you can ship, scale, and maintain — not neuroslop.
// YEARS 13+ shipping
// SHIPPED 11 products
// LIVE 7 running
// BASE Warsaw, PL
01 About me
One person accountable, all the way down.
I'm Sergey Sheleg — registered in Poland as Siarhei Sheleh. I build, market, and operate products from Warsaw, and I'm the one in the repo: no account manager between you and the work, no handoff to a bench you never met.
What I own end to end is the whole surface a product needs to exist: research, engineering, go-to-market, marketing, and operations. Most orgs split these across five roles and pay for the handoffs. I run them as one loop — and ship faster because of it. That loop is what 11 shipped products and every consulting engagement run on.
02 Open source
Shipped in the open,
used by millions.
Two lines of public work. The Nicegram platform — an open-source client tens of millions of people run every day, plus the business layer now entering early access. And sshlg-skills, the skill family that teaches coding agents how I take an idea to production.
Nicegram Business EARLY ACCESS
Nicegram OS — the AI business layer for Telegram-native teams. Company-owned accounts, delegated access, retained chat history, approved AI agents with a controlled context layer, and CRM sync. Revoke a seat and the deals stay with the company.
sshlg-skills
MIT 5 skills · 13 years of product judgementThe way I take an idea to production — discovery, gated delivery, product marketing, onboarding, retention, search — written down as skills a coding agent follows.
-
/01 task-pipeline
Intake grill that refuses vague work, then nine gated stages from docs and spec to deploy and post-deploy checks.
-
/02 super-ux
Scenario-driven UX: personas and jobs, flows, screens, scenarios, audits — plus a linter that catches docs drifting from the code.
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/03 NEW seo-aeo-audit
Evidence-first SEO and AEO/GEO audit: ten tracks, evidence tiers, a dated Google update timeline, and 59 prioritized growth plays.
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/04 make-skill
Create, retrofit, and ship skills and plugins the proven way, so the toolchain itself stays maintainable.
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/05 sheleg-design
Cinematic scroll-driven landing and hero design, plus product-UI style packs an agent can apply consistently.
// RUNS IN
Claude CodeCursorCodexOpenCodeGemini CLIWindsurfZedKiloKimiHermesOpenClaw + more
03 AI agent products
Running right now.
Three agent products live under SV Lab today — built, marketed, and operated by me. Each one is in production with paying users, not a demo.
Prowl
prowl.chatOne MCP endpoint. 408 market-intelligence tools for your agents.
The research layer for coding agents. Connect one MCP to Cursor, Claude Code, Codex — or any MCP client — and the agent can call 408 SEO, ads, SERP, review, and market-data tools with real numbers, cross-referenced into a 12-module strategy report shipped as an interactive brief, infographic, PDF, deck, and video. Billed per call from a USD wallet, with a $5 starter credit.
- 408 intelligence tools behind one endpoint — SEO, ads, SERP, reviews, trends
- 12 modules to a sourced brief in ~10 minutes, in 5 output formats
- Pay-per-call wallet with per-key scopes, spend caps, and IP allowlists
MCPTypeScriptNext.jsLLM orchestrationStripe
// 01 · Agent intelligence · MCP
Visit
CheckMyData
checkmydata.aiChatGPT for your database.
Open-source, MIT-licensed agent that turns plain-English questions into queries, executes them across PostgreSQL, MySQL, ClickHouse, and MongoDB, and explains results with auto-generated charts. Privacy-first by design and fully self-hostable.
- Multi-DB: PostgreSQL · MySQL · ClickHouse · MongoDB
- Indexes your codebase so queries match real business logic
- MIT-licensed, self-hostable, zero telemetry
TypeScriptPostgresDockerLLM agentsOpen source
// 02 · Open-source · NL → SQL
Visit
PrivateClawd
privateclawd.comYour first AI employee, deployed in 60 seconds.
Managed cloud for OpenClaw AI agents. Each customer gets an isolated VM with browser automation, code execution, multi-channel messaging (Telegram, WhatsApp, Discord, Slack, web), built-in budget guardrails, and prompt-injection defense — no servers, no DevOps.
- 60-second deploy on dedicated, isolated VMs — 24/7 uptime
- Token caps, loop detection, auto-pause — no runaway bills
- Prompt-injection & link-preview exfiltration defense built-in
Cloud orchestrationDockerOpenClawStripeEdge
// 03 · AI agent cloud
Visit
04 Track record
Everything shipped, in order.
11 products across consumer, AI, fintech, travel, developer tools, and Web3 — 7 still live and operating. 13 years, newest first.
- /01 2026 → now sshlg-skills github.com/ssheleg/sshlg-skills OPEN SOURCE LIVE
Thirteen years of product judgement, installed into your coding agent.
- /02 2026 → now Nicegram Business business.nicegram.app EARLY ACCESS
Nicegram OS — the AI business layer for Telegram-native teams: company-owned accounts, delegated access, retained chat history, approved AI agents, CRM sync. In early access.
- /03 2025 → now CheckMyData checkmydata.ai AI PRODUCT LIVE
ChatGPT for your database.
- /04 2025 → now PrivateClawd privateclawd.com AI PRODUCT LIVE
Your first AI employee, deployed in 60 seconds.
- /05 2025 → now Prowl prowl.chat AI PRODUCT LIVE
One MCP endpoint. 408 market-intelligence tools for your agents.
- /06 2025 → now Degenphone degenphone.xyz LIVE
NFT-backed eSIM phone numbers for Web3 users.
- /07 2021 → now Nicegram nicegram.app OPEN SOURCE LIVE
Privacy-first Telegram client with superior UX. Open source on iOS, Android, and desktop.
56M+ organic installs
- /08 2021 → 2025 WhatPlantIsThis whatplantisthis.io ARCHIVED
Botany meets ML — visual plant identification for enthusiasts.
- /09 2020 → now eSIM Plus esimplus.me LIVE
Global mobile connectivity for travelers.
- /10 2015 → 2020 Muse (Ultimate Guitar) ultimate-guitar.com ARCHIVED
Built and monetized the Ultimate Guitar mobile apps and launched an AI-powered learning product for the world's largest musician platform.
350M+ users · #1 platform for musicians
- /11 2013 → 2015Product Developer ARCHIVED
Built products for industry players in tech, agro, AI, and hardware.
05 Capabilities
What I actually do.
Six disciplines, one accountable owner. No handoffs between them, which is exactly why the work reaches production.
Go-to-market
Positioning, pricing, launch, distribution, first 1,000 users. I run GTM as the same loop as the build, not a phase after it.
Full-stack engineering
TypeScript end to end: agents, data pipelines, payments, infra. I write the code that ships, not just the spec.
Research & discovery
Customer interviews, competitive teardowns, technical spikes. I validate before I build, then keep validating after.
Marketing & content
Landing pages, SEO, AI-search optimization, organic distribution, paid funnels. Every product I run gets its own growth engine.
Operations & org
Stripe billing, support, legal, vendor stack, analytics. The boring infrastructure that keeps a product compounding after launch.
AI products
Agentic systems, NL-to-SQL interfaces, managed cloud for agents, and the open-source skills that keep agent output maintainable.
// CONTACT
Let's build something
Let's build something
worth shipping.
An AI agent, a data product, a 0→1 build, or an agent setup that keeps producing code you can maintain — write to me directly. I read every email and reply within one business day.