Karl
Founder · COO · CTO · Product Systems
KARL
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How I support founders

Product, operations, and technology moving under one owner.

Use this as the hiring checklist: the problem a founder feels, what I take over, and the proof that I can carry it across product, ops, software, QA, and automation.

One accountable owner I turn founder intent into operating cadence: owner map, weekly scorecard, decision log, escalation path, handoff rules, and the next build to move. ProofDinbnb / Lev Collection, StayMinty, and founder-led workflows across guest experience, owner visibility, reporting, and accountability. Founder operating system
Clear product specs I turn fuzzy ideas into product direction, MVP scope, user flows, PRDs, acceptance criteria, and an execution-ready build sequence. ProofAfterStay PRD v1.1, task workspace spec, dashboard prototype, Figma briefs, competitor map, and v1.3.0 travel app direction. Product lead
Workflows that ship I build or guide React, Next.js, Expo, SwiftUI, dashboards, integrations, internal tools, and automation bridges from real operator pain. ProofAfterStay, AfterStay Travel, ODIN Notch, owner statements, reporting logic, and operational automation bridges. CTO layer
Launch confidence I review flows, test implementation, catch edge cases, tighten UI/UX, and keep launch quality tied to real operators and users. ProofRelease checks, browser QA, mobile overflow fixes, product polish loops, TestFlight/App Store readiness, and launch risk tracking. QA + launch
Less operating drag I use Claude, Codex, ChatGPT, MCP, routing logic, monitors, and agents only where they remove repeated work or decision drag. ProofAI-assisted QA, ops reporting, browser checks, Slack/Gmail/Sheets/Airtable handoffs, and workflow routing for repeatable decisions. AI ops
Founder / product operating work
Founder / Product Lead · active

AfterStay

Founder/product operating work for a hospitality workflow platform: product thesis, PRD, white-label STR ops model, task workspace, dashboard prototype, guest/travel surfaces, Expo/Supabase app, QA loops, and launch path.

ProductSTR operating layer + guest/travel surfaces
BuildExpo app v1.3.0 · iOS + Android · Supabase
Founder scopePositioning · PRD · QA · launch path
Operating sourceCOO/CTO pain from ~150-unit STR portfolio
afterstay.orgtravel.afterstay.orgFounderProduct LeadHospitality SaaS

Founder scope

  • Owned the product thesis, positioning, customer pain, feature sequence, PRD v1.1, task workspace spec, dashboard prototype, and launch narrative.
  • Connected the product to real STR operating problems: team accountability, owner visibility, guest experience, post-stay workflow, and travel surface.

What shipped

  • AfterStay landing/property surfaces, travel.afterstay.org, WebGL landing prototype, dashboard prototype, and Expo app v1.3.0 for iOS and Android on Supabase.
  • White-label operating layer around task coordination, guest workflows, owner/team visibility, and post-stay experience instead of a generic SaaS dashboard.

How I operate

  • Move from founder idea to spec, design brief, implementation review, browser/mobile QA, release-risk tracking, copy, positioning, and handoff.
  • Use Claude, Codex, ChatGPT, and MCP only where they remove real operating drag: QA, task routing, reporting, workflow mapping, and product iteration.

Hiring signal

  • Founder/COO/CTO proof point: I can turn ambiguous business pain into product requirements, working UI, QA criteria, and a release path.
  • Useful for founder-led teams that need one accountable owner across product judgment, operating cadence, technical execution, and launch quality.
COO / CTO (fractional) · 2023 — Present

Dinbnb / Lev Collection

COO / CTO for a Norway-based STR business, responsible for the operating backbone behind roughly 150 Bergen and Oslo units: PMS/RMS decisions, API workflows, SOPs, owner reporting, revenue visibility, platform cleanup, and team execution.

COO mandateOperating rhythm and accountability
CTO mandateAPIs · PMS/RMS · reporting stack
Business layerRevenue · owners · teams
COOCTOSTR SystemsOwner ReportingPlatform Ops

What I build as CTO

  • The technical backbone for ~150 units: PMS/RMS selection (Guesty/Mews evaluation), API and data flows between booking, reporting, and owner surfaces, plus the automations that keep them honest.
  • Built the Lev Collection Owner Statement Reader and the reporting logic behind owner statements — parsing, reconciliation, and performance reports that exposed a market-level quality gap (Oslo 3.71 vs Bergen 4.63 guest scores) and drove targeted intervention.

How it runs as COO

  • Founder direction becomes an operating system: priorities, owner map, weekly cadence, SOPs, dashboards, revenue reviews, and accountability loops across Bergen and Oslo teams.
  • The build side exists to serve this layer — every tool above ships because an operating problem demanded it, not the reverse.
Native product · in daily use

ODIN Notch

A native SwiftUI/AppKit tray that turns the Mac notch into a command surface: music, meetings, reminders, tasks, files, and quick launch actions — local-first, no backend or OAuth. In daily use on my own machine.

ProductNative macOS · SwiftUI + AppKit
DistributionFriend-test DMG · release in progress
QualityUX polish and QA
SwiftUIAppKitProduct EngineerQA

What I build

  • Native productivity tooling around fast capture, context-aware actions, quick access, and practical workflow automation — adaptive notched and notchless layouts.
  • Product feel, visual polish, QA loops, desktop interaction patterns, and a marketing site with a friend-test build staged for public release.

Hiring signal

  • Useful for founder-led teams that need someone who can review product UX, debug implementation quality, and still ship hands-on.
  • Spec to shipped native app — one owner across the whole loop.
~150 units operated 3 products built & running iOS · Android · macOS Spec → ship, one owner
Seen the builds? Choose profile Back to top

Software, AI, and operating stack

The stack I run where product and operations meet.

For founder-led teams, the value is not tool familiarity alone. It is knowing which system should exist, how it should work, and how to make the team actually use it.

Founder system

Vision into execution

Translate founder ideas into PRDs, MVP scope, and operating workflows — the same path AfterStay took from PRD v1.1 to a live v1.3.0 app.

Product build

Specs to shipped UI

Product discovery, Figma briefs, user workflow mapping, React/Next.js builds, QA loops, and implementation handoff.

AI architecture

Agent-assisted work

Conditional routing, AI agents, QA agents, UI/UX review agents, MCP workflows, and automations that reduce repetitive work.

Operating stack

Data flow and visibility

Connect PMS, CRM, revenue, payments, docs, dashboards, Slack, and reporting so leadership sees what is actually happening.

Executive operator

Hands-on leadership

At Dinbnb: cut the tool stack, wrote the SOPs, stood up owner reporting, and ran weekly revenue reviews across Bergen and Oslo — building the tools myself when none existed.

Product & App Development

ReactNext.jsTypeScriptJavaScriptSwiftUINative macOS UXExpoReact NativeSupabaseVercelNetlifyAPI workflows

Design, Product & QA

FigmaLinearNotionGitHubPRDsUX prototypingUI/UX agentsQA agentsProduct specsMVP scopingUser workflow mapping

AI & Automation

ClaudeCodexChatGPTMCP workflowsZapierMakeAirtable automationsConditional logicRoutingBrowser QA

STR, PMS & Revenue

GuestyHostawayHospitableTrack PMS (TrackHS)MewsBreezewayOperto TeamsPriceLabsWheelhouseBeyondAirbnbBooking.comVRBO

CRM, Ops & Reporting

GoHighLevelHubSpotStripeSlackGoogle WorkspaceGoogle SheetsAirtableAsanamonday.comZendeskSalesforceOwner reporting

Trajectory

From STR operations to founder, COO, CTO, and product builder.

2019 — 2021

Property Manager / Listings Lead

Nord Collection · Copenhagen

Managed 150 residential units — vacancies down 20% over two years, maintenance response times cut 50%, new tenant applications up 30%.

Scope Leasing flow, listing quality, maintenance coordination, tenant handoff, and portfolio reporting discipline.

2022 — 2023

Head of Listings & Distribution

Stay SoSuite · Remote

Owned OTA distribution, launch readiness, listing QA, and channel visibility for a 300+ unit short-stay portfolio.

Scope Airbnb, Booking.com, VRBO, channel content, launch QA, distribution cleanup, and portfolio visibility.

2023 — 2024

Short-Stay Administrator / Systems Lead

Samma Property Group · Remote

Built the short-stay stack from the ground up: PMS, RMS, OTA workflows, SOPs, reporting, and handoff rules.

Scope PMS/RMS decisions, listing workflows, guest operations, revenue cadence, documentation, and system adoption.

2022 — 2024

Operations & Property Manager

The Chronicler · United Kingdom

Ran UK operations end to end across vendors, guest follow-through, property standards, issue resolution, and owner-ready updates.

Scope Vendor coordination, guest communication, maintenance follow-through, property standards, and owner reporting.

2023 — Present

COO / CTO (fractional)

Dinbnb / Lev Collection · Norway

Own the operating and systems backbone across ~150 units: execution cadence, reporting, PMS/RMS decisions, APIs, and platform cleanup.

Scope Founder operating cadence, owner statements, API/data workflows, revenue reviews, SOPs, team accountability, and market quality signals.

2025 — Present

Director of Operations / Fractional COO

StayMinty · United States

Run multi-market operating cadence across guest ops, reviews, maintenance approvals, revenue alerts, staffing, and leadership reporting.

Scope Daily escalation rhythm, Slack/Gmail/Sheets reporting, cleaner/vendor follow-through, issue triage, and owner-ready summaries.

Present

Founder / Product Builder

AfterStay · AfterStay Travel · ODIN Notch

Build STR SaaS, travel product surfaces, AI-native workflow systems, and native productivity tools from operator pain.

Scope Product strategy, PRDs, UI direction, React/Next.js, Expo, SwiftUI/AppKit, QA, release checks, and launch positioning.

Available — founder-side COO / CTO, product lead, product engineer

Hire me when the team needs product judgment and operating ownership in the same room.

One person who has done all four: ran ~150 units as COO / CTO, wrote the PRDs, shipped the apps, and QA’d them.

Need the STR operations version instead? Switch profile without starting over