available for select work

Stefan Gimeson

Senior Product Owner & full-stack builder

ACSPO · CSM · Patent holder

25 years across Nokia, HERE, Volkswagen, Mercedes-Benz, Mondu and Hubject — now building AI-native products solo.

See experience Download CV View work Email LinkedIn GitHub

Years building

25+

Roles

Side products

11+

US patent

10008046

// Experience

Twenty-five years of product & engineering

Java engineer turned Product Manager turned Senior Product Owner — building maps and SDKs at Nokia and HERE, contactless fueling at Mercedes-Benz, B2B BNPL at Mondu, EV charging at Hubject, and a vehicle-sharing MVP at Volkswagen. Now back at the keyboard, shipping AI-native products solo.

Product HuntLaunching Wed Aug 26 — get notified
Founder
Eurobase OÜ
PO
Mar 2026 — Present·4 mo
Founder of Eurobase — the sovereign Backend-as-a-Service for Europe. Auth, database, storage, realtime, functions, cron, vault, webhooks and CLI, fully EU-native with zero US jurisdiction and zero DevOps. Firebase simplicity, Postgres power, European sovereignty.
- Postgres, auth, storage, realtime, edge functions, cron, vault and webhooks — plus CLI and MCP server
- One-click GDPR DSAR (Article 15 + 20) exports, audit trail and sub-processor registry built in
- EU-only infrastructure (Scaleway France, Neon) — no CLOUD Act exposure, Schrems II–safe by design
Freelance Product Owner / Manager
Self-employed
PO
Dec 2023 — Present·2 yr 7 mo
Building and shipping AI-native products solo (Posta, DrosteCV, Fejja, LiveStylist, FoodProcessor, Stupid Correlations, Eurobase) while consulting as fractional PO/PM — drawing on 15+ years across automotive, fintech and mapping.
- Shipped 11+ products across iOS, Android, web and CLI
- Consulting: fractional PO/PM, product management, requirements engineering, discovery and story mapping
- Process analysis, system design and full SDLC (TDD, CI/CD, trunk-based) across every product I ship end-to-end
- Scrum Master / agile coaching for local and remote teams
- Jira & Confluence setup, workflow design and backlog operations
- End-to-end ownership: discovery → backlog → build → release → analytics
Technical Product Owner
Hubject GmbH
TPO
Dec 2023 — May 2024·5 mo
Freelance PO supporting the APAC rollout of Mercedes ME Charge — the ME Charge web portal and Mercedes ME Android app.
- Requirements engineering with Mercedes-Benz product teams and APAC market owners — reconciling conflicting stakeholder inputs into a single portal + Android backlog
- Coordinated APAC market launch across regional stakeholders
- Owned backlog for portal webapp + Android features, with clear functional and technical specifications for each release
- Bridged Hubject's eRoaming platform with Mercedes-Benz client teams
Senior Product Owner
Mondu GmbH
PO
Feb 2022 — Nov 2023·1 yr 9 mo
Owned outgoing and incoming payments at a B2B BNPL fintech — API and PAIN-document integrations with partner banks, plus core post-checkout functionality.
- Built credit notes, refunds and disputes from scratch
- Delivered 5 e-commerce plugins in year 1: Shopware 5, Shopware 6, Magento 2, WooCommerce, JTL5
- Designed UI mock-ups and UX flows for the merchant checkout and post-checkout (refund/dispute) journeys across all five plugins
- Owned multi-bank PAIN/SEPA flows and transaction-state machines
Senior Product Owner
Mercedes-Benz.io GmbH
PO
Jan 2021 — Jan 2022·1 yr
PO in the Bertha team enabling contactless fueling at hundreds of German stations — from a standalone app to embedded SDK in Mercedes ME and the in-car head unit.
- Shipped Bertha mobile apps (iOS + Android) and a fueling SDK
- Integrated fueling into the Mercedes ME companion app and head-unit dashboard
- Requirements engineering with Mercedes-Benz brand, UX and station-network stakeholders; produced UI mock-ups and UX concepts for the Bertha app and the Mercedes ME / head-unit integration
- Coached and onboarded team members across product practice
Entrepreneur in Residence
Beam GmbH
EIR
Oct 2020 — Feb 2021·4 mo
Freelance EIR — validated the business case for a technician support platform and prepared the investor pitch deck.
- Customer discovery and market sizing
- Pitch-deck and financial-model preparation
Product Owner
Volkswagen Gebrauchtfahrzeughandels und Service GmbH
PO
Sep 2019 — Sep 2020·1 yr
Built a vehicle-sharing platform MVP from scratch — backend, mobile apps, KYC, payment, billing, reporting and compliance.
- PO + project manager for frontend and backend components
- Requirements engineering across VW stakeholders (legal, compliance, KYC and payment vendors) — turning vocal, conflicting input into signed-off functional and technical specifications
- Scrum Master for local and remote development teams
- Drove the MVP from blank page to working multi-component product
Senior Product Owner
HERE Technologies GmbH
PO
Dec 2017 — Aug 2019·1 yr 8 mo
Senior PO for the indoor map learning platform and automotive maps built from sensor data via the HERE Open Location Platform.
- Led a team of 8+ developers; product ownership + agile PM + Scrum Master
- Defined sensor-data collection strategy for dynamic parking-garage mapping
- Drove map updates derived from connected-vehicle sensor data
- Project management and UML modelling of the sensor-ingest pipeline and venue update flows
Product Manager
HERE Technologies GmbH
PM
Nov 2013 — Nov 2017·4 yr
Built indoor experiences in SDKs and REST APIs for corporate and automotive customers — private venues, parking venues and dynamic venue updates.
- Owned indoor SDK and REST API roadmap for B2B customers
- Scoped private and parking venue features end-to-end
- Project management and UML modelling of the indoor SDK, REST APIs and venue data schemas — feeding clear functional and technical documentation to B2B integrators
- Co-inventor on US patent 10008046 (adaptive venue zooming)
Technical Product Manager
Nokia
TPM
Jan 2008 — Oct 2013·5 yr 9 mo
TPM in the HERE Maps team — worked on indoor maps and data, including indoor maps that shipped on Nokia Lumia devices.
- Drove indoor map data pipeline and product features
- Project management and UML modelling of the indoor map data pipeline
- Shipped indoor maps to Lumia consumers

Company names and logos are trademarks of their respective owners; shown to indicate prior employment, not endorsement.

// Work

Selected projects

Eurobase

Infra / DevTools

featured

Sovereign EU backend platform — Firebase ergonomics, Postgres power, zero US jurisdiction.

Postgres with built-in row-level security, email/OAuth/magic-link auth, realtime APIs, edge functions and S3-compatible storage — all running in EU-only infrastructure. Compliance DPA reporting and sub-processor tracking ship in the box.

Go 1.25ChiPostgreSQLpgxRedisRiverJWTVue 3TypeScript+4

eurobase.app GitHub

Posta

AI / SaaS

featured

API-first social media automation built for AI agents — across 9 platforms.

Give any AI agent or automation the power to run social media. A single REST API to generate, schedule and publish to Instagram, TikTok, X, LinkedIn, Facebook, YouTube, Pinterest, Threads and Bluesky — with AI captions, images and carousels, plus analytics on trends, best times and per-platform performance. Plug it into agents over MCP, or wire it into any pipeline with the n8n-nodes-posta community node. The dashboard still works for humans; the API is built for agents.

REST APIMCPn8nVue 3TypeScriptViteTailwindPiniaNode+7

getposta.app API docs Frontend repo Backend repo

DrosteCV

AI / Productivity

featured

AI CV builder suite — REST API, Vue app, Chrome extension, MCP server and template editor.

Build, share and auto-fill CVs from anywhere. A Node/Express API powers a Vue 3 web app, a drag-and-drop template editor, a Chrome extension that autofills any job application, and an MCP server that lets LLMs generate CVs on demand.

NodeExpressVue 3TypeScriptVitePiniaSupabaseFirebasePuppeteer+3

drostecv.app GitHub

Fejja

Mobile / AI

featured

AI selfie enhancement on iOS, Android and web.

Snap a selfie and Fejja transforms it via FAL AI and OpenAI vision pipelines. Ships with push notifications, in-app purchases, video processing and a sibling 'Fejja Pet' edition.

React NativeExpo 54TypeScriptSupabaseFAL AIOpenAIGoogle Cloud StorageSharpFFmpeg+1

App Store GitHub

📈

Stupid Correlations

Mobile · Web · Merch

featured

Viral chart generator with its own merch shop — funny stat correlations on iOS, Android, web and t-shirts.

Generate share-ready charts pairing absurd datasets with AI-written captions and AI-generated backgrounds. Native apps on iOS and Android plus a Next.js + React Three Fiber web storefront that sells the best correlations as real-world t-shirts and posters. Free tier plus RevenueCat-powered premium on mobile, full cart / auth / checkout on the shop.

React NativeExpoNext.jsReact Three FiberTypeScriptZustandNodeExpressGemini+8

stupidcorrelations.app Mobile app repo Backend repo Shop repo

🏁

STUNTLINE

Game / WebGL

featured

Browser-based 3D stunt racing — four circuits, ICE + EV cars, arcade powerups, plays on phone or desktop.

Drive a raycast-vehicle car around four escalating circuits — banked corners, jumps, forward-helix loops, a city tunnel — across 3-lap races with checkpoint timer top-ups, an arcade leaderboard and cinematic crash replays. Pick between a combustion car (RPM + gears, manual/automatic) or a Tesla-feel EV (single-speed, regen on lift-off and brake, POWER bar HUD). Arcade powerups scatter along the racing line each lap: TURBO, GRIP, +5s timer, SHIELD, plus OIL, MUD and SMOKE hazards. Seven weather presets (Day / Overcast / Sunset / Night / Rain / Snow / Random) retune sun, fog and tire grip; dynamic shadows, UnrealBloom, ACES tonemap, instanced roadside props, skid marks and procedural Web Audio engine. Mobile-friendly: landscape steering pad + GAS/BRAKE pedals, true fullscreen, scaled HUD. No samples, no React, no engine framework.

TypeScriptThree.jsRapier3DWASMViteWeb Audio APIWebGLGLSL

Try it!GitHub

n8n

n8n-nodes-posta

Integration

featured

n8n community node for Posta — automate social workflows from any trigger.

Drop Posta into any n8n flow: posts, media uploads (3-step signed URL), analytics export to CSV/PDF, social-account management and webhooks. Platform-specific options for TikTok privacy, Pinterest boards, YouTube settings and more. Ships with a library of ready-made example workflows to clone and adapt.

TypeScriptn8n-workflowJestGulpESLint

npm GitHub Example workflows API docs

LiveStylist

Mobile / Realtime AI

featured

Point your phone, talk to your AI stylist — live outfit advice in real time.

Hold up your phone and talk. LiveStylist streams audio + video to Gemini Live, sees what you're wearing and answers out loud with interruptible, natural conversation. Five-minute live sessions, device-based identity (no signup), pick-your-vibe personas from casual to date-night. RevenueCat manages premium tiers and per-day session quotas.

React NativeExpoFirebaseRevenueCatGemini Live APIGoogle Cloud RunWebSocketDocker

App Store livestylist.app

// Work

In development

🍳

FoodProcessor

Mobile / AI

Turn YouTube cooking videos into recipe cards and shopping lists, automatically.

Paste a YouTube URL; FoodProcessor extracts ingredients via tiered fallback (metadata → transcript → Gemini vision), generates a recipe card with AI imagery, and builds a categorized shopping list. RevenueCat handles subscriptions.

NodeExpressTypeScriptGemini 2.5PostgresNeonGoogle Cloud RunGoogle Cloud StorageReact Native+3

foodprocessor.app Frontend repo Backend repo

// Stack

Tools I reach for

Frontend

ReactNext.jsVue 3TypeScriptTailwindVitePiniaZustand

Mobile

React NativeExpoEAS BuildRevenueCatFirebaseIAP

Backend

Node.jsExpressGoChiPostgreSQLNeonRedisSupabasePinecone

AI / ML

OpenAIGeminiGemini LiveFAL AIFireworks SDXLMCPTesseractClaude CodeCodexCursor

Cloud & Infra

Google Cloud RunScalewayAWS S3AWS DynamoDBAWS SESCloudflareDockerVercel

Tooling

Framer MotionFFmpegSharpPuppeteerSocket.IOn8n

// About

Two halves of one career

A Senior Product Owner who shipped automotive, fintech and mapping products at multinationals — and a full-stack builder shipping AI-native apps solo. Pragmatic problem solver, SCRUM expert, vibe coder.

Product side: roadmaps, stakeholder management, requirements engineering, story mapping, hybrid/remote teams, ACSPO + CSM certified. Build side: React Native on mobile, Vue and Next on web, Go and Node on the backend, Postgres + Pinecone for data, and whatever AI provider fits the job — OpenAI, Gemini, FAL, Fireworks, MCP. Cloud Run when I want simple, AWS when I need control.