Open to senior product roles

Sergei
Khaletsky.

Senior Product Manager — B2B SaaS & Platform · Ships AI-Native Product Workflows Hands-On

16 years in IT — 8 in business analysis and enterprise delivery, 8 in product (5+ leading). I ship SaaS & platform products — multi-tenant, APIs, RBAC — and I build the AI myself in Claude Code: agentic, skill-based pipelines that are document-grounded (RAG), human-in-the-loop, and output-verified. Based in Warsaw, Poland.

Sergei Khaletsky
Warsaw, PL
16 yrs
in IT — 8 business analysis, 8 product
10+
platforms & products led end-to-end
5–25
people in teams & stakeholder groups led
3–4×
faster spec → delivery with agentic AI workflows
About

16 years in IT — 8 as a business analyst across enterprise delivery, 8 in product (5+ leading) — across SaaS platforms, marketplaces, and enterprise systems: multi-tenant architectures, backend APIs, distributed systems, RBAC, observability. I've led 10+ platforms end-to-end, working with teams and stakeholder groups ranging from 5 to 25 people — including migrating fragmented legacy systems into a unified platform serving multiple business units.

What's rare in 2026: I don't just direct AI tools, I build AI-native products with my own hands in Claude Code — agentic, skill-based pipelines that are document-grounded (RAG), human-in-the-loop, and output-verified. A PM who ships and engineers the AI.

“…he has always played a role far beyond a Product Manager… He excels at product strategy, planning, and systems thinking, while also being deeply grounded in the development process. This rare combination makes him an exceptionally effective product leader.”
Mikita Zenchanka — colleague across multiple initiatives
Selected work

Things I've built & shipped

An AI product I build by hand — backed by 16 years of enterprise-scale delivery.

01 AI-Native Builds

Founder Apr 2026 — present

SKalora

A startup-validation product I design & build end-to-end in Claude Code

A two-tier architecture: a core 5-stage validation pipeline — analysis → report → investor lens → Q&A prep → commercial offer — plus orchestration skills that compose specialists into client-ready packages. It turns a single raw pitch into structured, client-ready output.

AI AgentsRAGHuman-in-the-loopEvalsClaude CodeSkills/Plugins
  • Document-grounded (RAG) — reasons over the client's real materials, not model memory
  • Human-in-the-loop — explicit checkpoints on the judgment calls AI shouldn't make alone
  • Output verification — structural checks & diffs vs source docs catch silent agent failures
  • Building in public — early pilot runs with hands-on user feedback

Client engagements

Say Less, Go! Stanislau Ladutska

Value proposition, user segmentation, feature prioritization and GTM direction.

“After talking to you, it became much clearer where to move next. I defined the scope and now I'm building the features.”

JobMatch Aliaksandra Asichka

Repositioned from a single-feature app into a full-journey platform: CV adaptation, ATS filters, application tracking.

Partsify Oleg Granatov · automotive auction

Mapped the riskiest assumptions and prioritized directions in 7 days.

“You summarized and systematized everything we had. You dig deep and are incredibly proactive. Now we have a clear picture of our state and what to focus on next.”

02 Startup Products

Senior Product Manager 2025 — present
Sole PM · end-to-end SEAL Group · venture studio

AutoPlovykla — Car-Wash Management Platform

Multi-tenant platform · flagship deployment: Hocus

Architected and owned end-to-end as the only PM at a venture studio: booking, POS/operations, CRM and analytics — mobile app plus web console, replacing fragmented legacy tools with one unified system. Deployed as Hocus for the largest car-wash network in Lithuania — 8 locations, same core, brand-specific configuration, no forked codebase. Also run AI product ops for the group — agentic, Claude-based workflows from spec to tracker-ready tasks.

Hocus · 8 locationsspec → tasks ~1–2h → ~20min (3–4×)6 role types (RBAC) · 6 integrationsrepeat orders ~15% / ~7% · +500 installs/mo
Product Manager 2024 — 2025
Owned strategy & execution, both sides

Joiner App

Consumer marketplace & SaaS · event organizers ↔ attendees

Owned strategy and execution across marketplace and platform for both sides — permissions, event management, notifications, analytics — with a tight A/B-testing loop against real drop-offs.

onboarding conv. +31%MAU +42% · retention +8pp · drop-off −15–20%5–7 experiments/mo · cycle time −35%

03 Enterprise & Scale Track Record

Product Manager Jan 2021 — Dec 2023
Owned the platform end-to-end EPAM Systems

Community Platform

Hub for all of EPAM's internal communities · global enterprise

Owned the community platform hosting all of EPAM's internal communities, serving thousands of users. Systematically optimized discovery and engagement flows, and launched a Telegram bot as a new content-distribution channel.

retention +10%Telegram bot +5–8% participationthousands of users
Product Manager Oct 2019 — Jan 2021
Owned end-to-end EPAM Systems

Events Platform

Event attendance, reporting & participation

Automated event-attendance calculation and reporting to full coverage across event types, and drove consistent NPS growth for event managers through iterative platform improvements.

participation conversion avg participants +20%NPS growth · full coverage
Product Owner Jun 2018 — Oct 2019
Product owner, end-to-end EPAM Systems

Conference Mobile App

Mobile app for EPAM's largest internal tech conference

Product owner for the mobile app uniting thousands of EPAMers, customers and global partners. Shipped live networking and engagement features bridging the in-person and in-app experience.

thousands of attendeeslive networking features↑ user satisfaction
Side build

Hocus Feedback

QR-rating + gamification · 8 auto-detailing locations

Scan a QR → rate the service → spin a wheel of fortune; happy customers get nudged to Google Reviews, winners claim a prize. Shipped hands-on: Next.js 15, Supabase/Prisma, tri-lingual (LT/EN/RU), Vercel with a daily cron.

8 locations3 languagesreviews + retention loop
Experience

Career track

May 2025 — Present
Senior Product Manager · SEAL Group UAB

Product lead for AutoPlovykla at a venture studio building B2B/B2C SaaS platforms and marketplaces; also running agentic AI product ops for the group.

Apr 2026 — Present
Founder · SKalora

A startup-validation product I design and build end-to-end in Claude Code — a RAG-grounded, human-in-the-loop validation pipeline. Remote.

Jan 2024 — Apr 2025
Product Manager · Joiner App

Consumer marketplace and SaaS connecting event organizers and attendees; owned activation, retention and the experiment loop.

Dec 2012 — Dec 2023
Business Analyst → Product Manager · EPAM Systems

Grew from business analyst to product manager over 11 years: requirements and specs for EU enterprise clients, then community, events and conference platforms in a global enterprise — distributed teams, executive reporting, thousands of users.

Skills

Where I'm strong

AI-Native Product

Agentic workflows & orchestrationRAG / document-groundedHuman-in-the-loopPrompt & context engineeringSpec-driven developmentOutput verification & evals

Technical PM

SaaS & platform productsMulti-tenant architectureProduct strategy & roadmappingPRDs & technical specsOKRs0→1 & live iteration

Systems & Data

Backend & distributed systemsAPI design & integrationsRBAC / ACLIdentity & auth (OAuth/SSO)ObservabilityA/B testing & analytics

Leadership

Cross-functional executionDistributed teamsExecutive communicationERP / CRM / payment integrations

Tools & stack

Claude CodeClaude APIMCPClaude Skills & PluginsCursorFireflies → Obsidian (RAG)GCPAWSFirebaseSupabaseVercelDockerREST · WebhooksOAuth / SSOSQLAmplitudeGA4BigQueryLooker StudioLinearJiraFigmaNotion
Also

Teaching, mentoring & community

  • Lecturer, Product ManagementTeachMeSkills · 2023–24
  • Mentor & jury, startup & student hackathonsongoing
  • Speaker & organizer, product / BA meetupsongoing
Sergei mentoring at a workshop
What people say

In their words

…a pro, who carries 11 years of experience in IT, Business Analytics, and Product Management.
Marija AbdelhalimBrand Strategist · worked together at Joiner App
Without you, the product couldn't have become what it is today. You've been the driving force behind its evolution.
Alex SipkevichCo-founder, Joiner App · was Sergei's manager
Contact

Let's talk product & AI

Open to AI-native product roles. Fastest way to reach me is email.