Design leader · Fintech & B2B SaaS · 15 years
AI can draw the screen.I decide which screenmoves the business.
I take products from zero to one, scale them to millions, then make them profitable. Three 0→1 launches and 1.6M+ wallets so far. Today I lead design for AI Agent and messaging products at Insider One.

Dear reader,
I design trust. It started with checkout buttons, the kind you hesitate over for a second too long, and now it's AI agents that act on your behalf. Same question, bigger stakes: would you let this thing handle your money?
I started as a front-end developer at Markafoni, coding the checkout. Technically, it worked. Commercially, people kept walking away at the last step, and nobody could tell me why. I went looking for the answer and never really came back to code.
My first user test there turned the whole thing upside down: the problem wasn't the checkout at all, it was order tracking. That's the lesson I still lean on. Listen to people while you learn the numbers; each explains what the other can't. And debating button colours? Fifteen years in, I've yet to see it save a single sale.
The scenes changed, the question didn't. At Garanti BBVA, features we shipped reached a million people within weeks. At iyzico, sketches on paper became products that pay their own way. Now at Insider One, my team and I are making our highest-MRR products more profitable, one agent at a time.
This page is my annual report: the holdings, the numbers and the bets behind them. Thanks for reading it, and you're welcome to ask about the footnotes.

Built for 35M unbanked adults in Türkiye
Fifteen years, eight balance sheets.
Every product I've worked on, the stage it was in, and the economy it touched.
Insider OneProduct Design Team Lead2024 — nowActiveShareownerAgent One (AI Agent), WhatsApp, SMS, RCS, Email0→11→NN→$Agent One launchedMeta partnershipSMS cost ↓
Leading a cross-functional design team across Agent One (AI Agent), WhatsApp, SMS, RCS and Email: integrating user research and analytics into data-driven product decisions.
- Economy touched
- B2B SaaS, global brands
- Sector
- B2B SaaS
mendixMendixSenior Product Designer2022 — 2024Marketplace for a low-code platform1→N+30% user satisfaction3rd-party ecosystem growth
Led the Marketplace experience for the low-code platform: benchmarking and user testing that lifted user-satisfaction scores by 30%, built on the design system for usability and accessibility.
- Economy touched
- Low-code developer ecosystem
- Sector
- Low-code
iyzico (PayU)Product Design Team Lead2019 — 2022Options realisedWallet, Pay with iyzico, Checkout, Merchant Panel, Buyer Protection0→11→NN→$1.6M+ walletsCR 16% → 33%
Led the experience design team behind Checkout Form (used by 40k+ e-commerce sites), Pay with iyzico, iyzico Wallet for unbanked and underbanked people, Merchant Panel and Buyer Protection.
- Economy touched
- 100k+ merchants · acquired by PayU for $165M
- Context
- 1.6M+ wallet accounts · built for 35M unbanked adults in Türkiye
- Sector
- Payments
Garanti BBVA TechnologySenior UX Designer2015 — 2019Mobile banking: QR withdrawal, P2P, loans, virtual POS1→N5 → 1 min1.2M/moNPS 63 → 84
Designed and optimised flows for key banking apps (loans, QR withdrawal, P2P, virtual POS); usability testing with diverse user groups, including Tobii eye tracking; Google Analytics and Hotjar to measure satisfaction.
- Economy touched
- One of Türkiye's largest banks
- Sector
- Banking
UserspotsUX Designer & Optimisation Specialist2015A/B testing programs for clientsN→$Hypothesis-driven test roadmaps
eCommerce and mobile optimisation for clients: workshops to find optimisation areas, wireframes and A/B tests (Optimizely, Google Optimize, VWO) with PMs and business analysts.
- Economy touched
- eCommerce, travel, finance
- Sector
- CRO / Consulting
MetglobalMetglobalUX Designer2014 — 2015Hotel booking redesignN→$+25% booking conversion
Flows, wireframes and information architecture for hotel-booking facelift projects; taught UX principles to PMs and developers and built a user-centred mindset across the team.
- Economy touched
- Online travel
- Sector
- Travel
markafoniMarkafoniFront-End Developer → UX Designer2012 — 2014Checkout optimisation; founded the UX teamN→$First UX hire → team
Joined as a front-end developer (Markafoni, Zizigo, Misspera, Enmoda) and became the first UX designer in 2013: checkout optimisation and QUAL + QUANT research in the product flow.
- Economy touched
- Fashion eCommerce
- Sector
- E-commerce
Wingie EnuygunWingie Enuygun GroupFront-End Developer2011 — 2012Flight booking, mortgage application (front-end dev)Engineering roots
Front-end developer at Enuygun.com (now Wingie Enuygun Group): flight booking and mortgage-application projects for web and mobile web.
- Economy touched
- Online travel
- Sector
- Travel
Assets on both sides of the ledger.
How I lead people, and what I use to ship. I started as a front-end developer and studied business; I run the design team like a product.
- 01Leading a 10-person design teamAcross four product groups at Insider OneNow
- 02Every designer owns a numberConversion, activation, churn, cost per message
- 03Knowing the stageStaffing and rituals differ for 0→1, 1→N and N→$ teams
- 04Strategy & vision presentationsTaking design direction to the management team
- 05Go-to-market with PMsLaunch strategy for new products and features
- 06Research as a growth loopTests, analytics and A/B results feed the roadmap
- 07Workshops & design critiqueProblem framing with stakeholders; critiques that raise the bar
- 08LanguagesTurkish (native), English (professional), Dutch (elementary)
- 01Design & prototypingFigma, Framer, Sketch, Miro, Zeplin, InVision, KeynoteCore
- 02Interactive prototypingHTML / CSS / JS
- 03User testingRemote & moderated (Zoom, Teams), Tobii eye tracking
- 04Product analyticsGoogle Analytics & Hotjar (both certified), Countly, Data Studio
- 05A/B testing & CROOptimizely, Google Optimize, VWOCRO
- 06Funnel & checkout optimisationCheckout forms, merchant sign-up, booking flowsPayments
- 07AI-native workflowAI handles the drafting; designers spend time on judgmentAI
- 08B2B SaaS & low-code platformsInsider One, Mendix Marketplace
- 09Payments & banking flowsiyzico, Garanti BBVA: wallets, QR, loans, virtual POSBanking
- 10Front-end rootsShipping code since 2011; studied business
One designer, three stages of a product's life.
Each case starts with the business problem and ends with the number. Full cases include client work under NDA, so they are shared privately: request access.
Find a real problem, shape a product that didn't exist, get to first traction with a small team.
Scale what works through distribution, partnerships and flows that hold up at millions of uses.
Make a mature product more efficient: less cost per message, more conversion per visit.
A wallet for 35 million people the banks left out
Merchants were losing sales to bank transfers and pay-at-door. We designed iyzico Wallet and “Pay with iyzico” so unbanked shoppers could pay online, with top-up channels, a prepaid card and a new checkout tab.
Agent One: shipping an AI agent product from zero
We took Insider One's AI Agent from concept to launch: deciding what the agent should own, where people stay in the loop, and how trust is earned inside a B2B marketing workflow.
Card-less withdrawal with a QR code
Cutting ATM queues by letting the app replace the card.
Mendix Marketplace: benchmarking our way to happier builders
Benchmarking and user testing across the Marketplace for the low-code platform, then interfaces built on the design system for usability and accessibility.
WhatsApp × Meta: design as a distribution channel
Joint projects with Meta that put our product where businesses already are.
SMS: designing for margin
Product and UX decisions that lowered the cost of every message we send.
Fifteen years in forty-one seconds.
The same data that powers this page — holdings, metrics and skills — rendered as a silent annual report with Remotion. When a number changes, the film re-renders.