Technical Product & Growth Manager

Bohdan Kremnyi

IT PM who ships code, runs ops, and closes deals.

Warsaw, Poland. Open to US/CA/EU relocation.

$1m+
closed investment deals
100+
projects delivered
42k+
delivery hours led
40+
people hired and managed
01

What I do

Product & Growth

At Approck VC, I own marketplace ops, deal flow, data analytics and forecasting. $1m+ investment closed, 50+ acquisitions mediated, 100+ applications evaluated with full due diligence, and the marketplace website grown from zero to 30k monthly unique users and ~100 leads per month.

Technical execution

I ship Next.js & PHP marketplace features, build Python and n8n automations, and configure full martech stacks: GA4, GTM, HubSpot, Apollo etc. Led delivery of payments and monetization in 7+ products — Stripe, PayPal, ThriveCart, subscriptions, pay-per-seat, multi-currency — and 10+ production migrations across AWS, Azure, Google Cloud, and DigitalOcean. Delivering LLM products since early 2023: a B2C generative-content SaaS built on ChatGPT, DALL-E, and Midjourney APIs, and a custom-trained GPT pipeline for company-data normalization.

Team & operations

9+ years in IT, 7+ leading distributed delivery teams across 11 functional disciplines — backend, frontend, native iOS/Android, UI/UX, QA, DevOps, and more. I joined as Project Coordinator, grew into PM and COO, delivered 100+ projects for clients in 20+ countries across 6 continents and 10+ time zones, wrote 3,800+ task specifications, recruited and developed 40+ people, and at peak coordinated 13 concurrent projects with 30 developers and 18 stakeholders. 14 of those projects shipped native mobile apps, and my teams pushed ~100 production releases across the App Store, Google Play, and the web.

02

Selected work

Outcome

Marketplace & Managed portfolio investment fund @ Approck VC

Product & Growth Manager and de facto technical owner for a marketplace around app acquisitions and investor-facing deal flow.

$1m+ investment deals closed, 50+ acquisitions mediated, 100+ applications evaluated with full due diligence delivered. Grew the marketplace website from zero to 30k monthly unique users and ~100 leads per month.

Owned the Next.js marketplace frontend & backend, shipped new features, SEO, multi-language, blog, knowledge base, and ad-compliance landing pages. Managed investor relations after closing: P&L reporting, performance updates, payout coordination, and materials for prospective investors. Configured GA4, GTM, HubSpot, Apollo, and 7+ other user acquisition trackers with event flows. Built 10+ Python and n8n automations replacing manual work.

Outcome

Medical ERP

Large B2B delivery from concept through scale for a medical ERP product.

4,000+ delivery hours from concept to scale.

550+ tasks • 17 contributors

Team mix: 5 backend, 6 frontend, 3 QA, 1 UI/UX, 1 DevOps, 1 PM/BA.

Led delivery across discovery, business analysis, SOW definition, effort estimation, planning, sprint breakdown, stakeholder communication, and cross-functional execution. Product core: proforma-to-invoice-to-payment pipeline, role-based permissions for regional sales reps, threshold-based purchase approvals, PDF document generation, and multi-currency support.

Outcome

Fitness tracking iOS/Android app

Mobile product delivery for a fitness tracking app with hardware integration and gamification features.

9,000+ users, 3,000+ delivery hours, 15 shipped updates.

200+ tasks • 12 contributors

Team mix: 2 Android, 2 iOS, 2 backend, 2 QA, 2 UI/UX, 1 DevOps, 1 PM/BA.

Coordinated the whole project across mobile, backend, design, QA, and release work: standalone iOS and Android Bluetooth test apps built to de-risk the hardware before integration, server-side BLE logging, WebSocket live workout tracking, and secure photo storage.

Outcome

AdTech startup

Advertiser-influencer marketplace for mobile app acquisition campaigns.

2,500+ delivery hours, 3 core interfaces, first-party iOS and Android attribution SDKs, 4 tracking integrations.

350+ tasks • 15 contributors

Team mix: 3 backend, 3 frontend, 3 QA, 2 Android, 1 iOS, 1 UI/UX, 1 DevOps, 1 PM/BA.

Managed roadmap, advertiser/influencer interfaces, and releases across web and mobile teams — including the attribution SDKs shipped from v0 to production alongside AppsFlyer and Adjust integrations.

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Outcome

B2B project-management SaaS

US-based SaaS product for workspaces, task boards, dashboards, notifications, and support workflows.

2,000+ delivery hours across a 3.5-year product lifecycle: 50+ features, free tier, and 3 monetization models — subscriptions, pay-per-seat, and email support desk.

230+ tasks • 13 contributors

Team mix: 3 backend, 4 frontend, 2 UI/UX, 2 QA, 1 DevOps, 1 PM/BA.

Managed delivery across user/admin workflows, monetization logic — Stripe subscriptions, pay-per-seat with proration, trials, and refund handling — a paid email-support-desk add-on on Postmark, AWS infrastructure, and client repository handoff.

Outcome

Data automation & lead-gen systems

Data platforms and scraper operations for B2B lead generation, enrichment, deduplication, and reporting.

Pipeline work across large-scale scraping, database sync, CRM enrichment, proxy/VPN reliability, and Looker Studio reporting.

300+ tasks • 11 contributors

Team mix: 5 backend, 2 frontend, 2 UI/UX, 1 DevOps, 1 QA.

Coordinated scraper stability, data quality fixes, AWS/server migrations, database updates, client handoffs, and reporting workflows.

Outcome

Nutrition coaching / trainer portal

Portal for trainers and clients covering recipes, measurements, questionnaires, shopping lists, and admin flows.

3,000+ delivery hours across a complex product surface: recipe calculations, calorie/ingredient logic, packages, billing, affiliate workflows, and email operations.

450+ tasks • 12 contributors

Team mix: 4 frontend, 4 backend, 1 QA, 1 DevOps, 1 UI/UX, 1 PM/BA.

Managed delivery across trainer/admin/client interfaces, calculation-heavy workflows, validation fixes, multi-currency billing in GBP, EUR, and USD, ThriveCart and Mailchimp integrations, an end-to-end affiliate program — landing pages, link management, invitation flows — and production releases.

Outcome

Property & construction data pipelines

Scraper operation feeding a European real-estate financing marketplace with construction-permit and property data from Baltic state registries.

1,200+ delivery hours over 5+ years of continuous work for one client (2019–2025).

115+ tasks • 5 contributors

Team mix: 4 backend, 1 PM/BA.

Ran the operation end to end: Estonian, Latvian, and Lithuanian registry scrapers, Docker-ization of the fleet, an AWS account migration with handoff documentation, Pipedrive CRM sync, Slack completion alerts, and ongoing stability and data-quality work.

Outcome

Web3 & blockchain product cluster

Crypto products delivered for 8+ clients: tokens, NFT platforms, exchange bots, and crypto banking.

1,900+ delivery hours: an ERC-20 token developed and deployed to Ethereum mainnet with a fixed 500M supply, NFT smart contracts, an NFT marketplace with ICO presale and token-holder cabinet, TRON-based products, a Telegram + Viber crypto exchange bot, and a crypto banking web app.

170+ tasks • 17 contributors

Team mix across projects: 6 backend, 9 frontend, 3 UI/UX, plus BA and content roles.

Coordinated smart-contract development, token launches, presale cabinets, wallet and exchange flows, and parallel delivery for separate client teams and stacks.

Outcome

Dating & events Telegram platform

Dating and local-events product built as a Telegram bot with a full Telegram WebApp (Mini App) client and a companion web app.

2,000+ delivery hours: geolocation-based event search, venue and creator management, subscriptions, and EN/DE localization.

230+ tasks • 8 contributors

Team mix: 3 backend, 3 frontend, 1 UI/UX, 1 PM/BA.

Managed delivery from bot-first MVP to the Telegram WebApp port: creator and user role flows, event attendance and matching journeys, venue management, subscription logic, and production infrastructure.

Outcome

AI medical-imaging app

Medical product using an ML pipeline to analyze joint X-ray imagery, delivered directly inside the client's engineering workflow.

Backend and ML-pipeline delivery coordinated issue-by-issue through the client's GitHub flow: doctor/patient auth, imaging history, and pipeline orchestration.

45+ tasks • 3 contributors

Team mix: 2 backend, 1 PM/BA.

Coordinated Celery and RabbitMQ pipeline orchestration, an Azure database migration, API and schema changes, and auth/verification flows in step with the client's in-house ML team.

Outcome

Expense & receipt digitization app

Finance app for the Baltic market: receipt capture, digitization, cost reports, and VAT handling for business users on iOS and Android.

Recurring App Store and Google Play releases with EE/LV/LT/EN localization and VAT-rule updates shipped on regulatory schedule.

85+ tasks • 7 contributors

Team mix: 2 iOS, 2 Android, 2 UI/UX, 1 PM/BA.

Managed the mobile release train: localization across four languages, VAT logic changes, receipt digitization flows, store submissions, and GitHub-based handoffs to the client's team.

03

Things I have built

Internal subscription app acquisition valuation & forecasting tool

A tool for evaluating subscription apps using conversion rates, cohort retention, and subscription data to generate revenue forecasts, profit projections, ROI estimates, and recommended acquisition pricing.

AI-powered SMM content pipeline

n8n plus LLM workflow for multi-platform, multi-language publishing with a group-command interface; replaced an external content vendor.

Python lead-gen scraper

Started as a Claude agent, then rewrote it in pure Python after measuring token cost against throughput.

Telegram-to-web export tool

Sync script pushing 100+ marketplace listings from a Telegram channel to the Next.js website with image handling and slug generation.

Mobile Apps Marketplace Next.js frontend

SEO product slugs, multi-language support, dynamic filters, comparison pages, knowledge base, and sub-1s load targets.

Full martech tracking stack

GA4 and GTM event taxonomy, Meta, Reddit, Bing UET, X, TikTok, and LinkedIn pixels, UTM attribution, HubSpot, and Apollo outbound to 20k contacts.

Marketplace operational tools

Python, n8n, BigQuery, and Data Studio workflows for app valuation, lead enrichment, contact deduplication, and pipeline reporting.

Agency ops platform (internal)

Project-estimate tracker plus Slack bots for bench tracking, missing-report chasing, and team activity analytics — internal tooling that ran delivery operations for a 30-person agency.

Internal upskilling programs

Per-developer training tracks in Next.js, Shopify, Solidity smart contracts, and Selenium QA automation. The Solidity track turned 3 backend developers into smart-contract engineers and opened the web3 service line behind 8+ crypto client projects.

And dozens of other automations for Slack, Jira, Trello, and internal operations in the pre-LLM era.

04

Toolkit

Build

  • Next.js
  • PHP
  • ReactJS
  • TypeScript
  • Python
  • Telegram Bots & Mini Apps
  • n8n
  • Make.com
  • Zapier
  • Claude Code & Codex
  • WordPress

Ship

  • Vercel
  • AWS
  • Azure
  • Google Cloud
  • DigitalOcean
  • CloudFlare

Track

  • GA4
  • GTM
  • Looker Studio
  • RevenueCat
  • Adapty
  • Apphud
  • Sensor Tower
  • X/Meta/Reddit/LinkedIn/TikTok

Run

  • Jira advanced admin (automations, plugins, JQL)
  • Confluence
  • HubSpot
  • Apollo.io
05

About / Contact

I am based in Warsaw and work at the intersection of product, project management, growth, operations, and engineering. My strongest work usually happens where the product surface, internal tooling, and commercial pipeline all need to move together.

My formal base is Computer Science: B.Sc. and M.Sc. from Poltava National Technical University, with MBA coursework in Business Administration at ISMA University of Applied Sciences. I keep the credential layer practical: Google Project Management, Professional Scrum Master training, IBM Generative AI for Project Managers, and Agile with Atlassian Jira. Before agency leadership I freelanced as a web developer on Upwork — 100% Job Success Score with clients across the US, UK, EU, Canada, Colombia, and Israel — which is where the habit of shipping things myself comes from.

Open to PM, technical PM, product, growth, or delivery roles in Poland, the EU, Canada, and the United States. Especially interested in companies where the line between product, ops, and engineering is thin.