Nobody in the middle
The person who sells the project, runs it and actually builds it is the same person. An agency price carries a share of the sales team, the project manager, the office and general overhead; none of that exists here.
Independent product designer & full-stack developer
I turn complex requirements into simple user experiences, and strong ideas into web and mobile products that scale.
const product = await build({
experience: clear
,
system: scalable
});How I think
A good digital product doesn't just look good. It asks the right question, doesn't tire the user, and can grow with the business.
I treat design and development not as separate deliverables, but as two sides of the same product decision.
Where the price difference comes from
Being cheaper isn't a discount campaign, it's a consequence of cost structure. A meaningful share of what you pay an agency isn't the work itself — it's the people not doing it.
The person who sells the project, runs it and actually builds it is the same person. An agency price carries a share of the sales team, the project manager, the office and general overhead; none of that exists here.
When one person designs and hands off to a developer, the work gets understood twice, estimated twice and billed twice. When the same person owns both, that handover never happens.
Authentication, form infrastructure, payment flows, the admin-panel skeleton and the technical SEO setup repeat on every project. Mine are already built and field-tested, so you only pay for the part that is specific to you.
There is no stage where I learn your budget first and shape the quote around it. The price follows the scope, and the same scope costs the same whoever is asking.
Delivery commitment
On small and mid-scale projects the delivery date is written as a contract term, not offered as an estimate. If it is missed for a reason on my side, 5% of the project fee is deducted for each full week of delay, capped at 20% of the fee.
A page built around a single offer goes live, with measurement already wired up, inside two weeks when the content is ready.
With copy and images ready you land near the lower bound; if we produce the content together, nearer the upper one. I tell you which it is after discovery.
Process consulting is reported in 1-2 weeks, an automation setup runs 2-4, and an admin dashboard 4-8.
Longer builds (custom software, mobile apps) sit outside this commitment. They get a milestone plan with dated stages instead, because claiming they finish in a few weeks would not be true.
About
Kaan Erenmemisoglu is an independent product designer and full-stack developer based in Istanbul, Türkiye. Since 2019 he has designed and built corporate websites, e-commerce stores, mobile apps and SaaS products.
On a project he takes on both the user experience and interface design and the software, integrations and release process behind them. Nothing gets lost on the way from design to code, and the product is set up from day one as a system that can grow.
He works with React, Next.js, TypeScript, Node.js, Flutter and React Native. Clients in Türkiye are served in Turkish and clients abroad in English, with the work carried out remotely.
Selected live projects
Look at the projects I designed and shipped, directly in their live environments.
Live projectA digital platform bringing 3D models, designers and local manufacturers into one marketplace experience.
Live projectA brand site presenting a natural stone and sterling silver collection as an editorial shopping experience.
Concept lab
Concept work that makes my skill set and product approach visible across different use cases.
A role-based admin panel that turns dense operational data into readable decisions.
A mobile-first shopping experience that removes friction from product discovery through to payment.
A service product combining location, booking and notification infrastructure in a calm mobile experience.
Capability map
From discovery to launch, I handle user experience, interface, technical systems and integrations as one whole.
Discovery, information architecture and prototyping that bring the idea, the user need and the business goal into one product flow.
A component and design system approach for consistent, accessible and maintainable interfaces on web and mobile.
From landing page to SaaS product: modern frontend, secure backend, database and admin panel development.
Cross-platform mobile products with payment, location, notification, authentication and third-party service integrations.
How I work
At every step I share plainly what has been completed, which decision was made and what comes next.
I get clear on the need, the user and the measure of success.
I make the flows visible and test the product before it is coded.
I build the approved system cleanly and so that it can scale.
I plan testing, measurement and post-launch support.
Service catalogue · 2026
Clearly scoped packages for web, mobile, UI-UX, automation, process consulting, brand identity, admin dashboards and maintenance.
A corporate site that says what you do and can be found in search.
One page that carries one offer and measures every conversion.
A store that removes the friction between finding a product and paying.
Software built around your business: users, permissions and billing.
One codebase, shipped to both iOS and Android.
Flows and interfaces that make the product testable before it is built.
A role-based dashboard that gets the operation out of spreadsheets.
Repetitive work and daily reports, running without you.
An analysis that says which work is worth digitising, and which is not.
The rules that make you look like one company everywhere.
The package is set by project value, active integrations, traffic and downtime risk. It's an annual agreement paid once: no auto-renewal, no cancellation process — if you want to continue, you renew at the end of the year.
Maintenance and support details ↗Regular maintenance so your site keeps running: checking that it works, backing up your data and applying security updates. If something breaks, I step in before you notice.
Everything in Standard plus 36 hours of technical help a year: small fixes and changes come out of that time. In an emergency you move to the front of the queue.
Everything in Maintenance + Support plus development starting at 72 hours a year (new sections, improvements), a regular plain review of how your site is doing, and for critical systems continuous automated monitoring and prioritised planning.
Added to a maintenance package as needed.
Server, SSL, backups and uptime monitoring
I take on everything technical that keeps your site online: the server it runs on, the security certificate behind the padlock in the address bar, regular backups and monitoring of whether the site is up. If your site goes down one day, I notice and fix it before your customer does.
Monthly behaviour and performance insights
How many people visit your site each month, where do they come from, which pages do they look at most and where do they leave? I compile that data every month and explain it in a plain report without technical jargon, so you decide on real data rather than guesswork.
4 small content or campaign updates a month
You tell me what needs to change on your site and I do it: price updates, a new campaign announcement, copy or image changes. Up to 4 updates a month are included. The “I need a small change on the site but who do I ask?” problem goes away.
Crawling, indexing, speed and technical issue tracking
SEO means being findable when someone searches for you on Google. Every month I check whether Google is reading your site correctly, whether your pages appear in search results, and how fast the site is. I fix the technical problems that would drag your ranking down before they grow — and before you notice them.
Monthly analysis and prioritised experience improvements
Conversion means a visitor becoming a customer: filling in a form, calling you or buying. Each month I look at where visitors get stuck and give up, and improve the site so that a little more of your traffic turns into customers.
Support and development hours in each package are annual and do not carry into the next year. Hosting, licence and third-party service fees are billed separately.
Frequently asked
The questions I get most, answered without the detour. These are the same answers I give over email.
Quoting a figure without seeing the scope would be wrong: page count, whether the content is ready, how many languages and which integrations move the same job several times over. What I can say is that for the same scope my quote lands well under agency quotes, and that comes from cost structure rather than from a discount. Describe what you need; the first call and the proposal are free, and the proposal is a fixed price with every line itemised.
Because the price carries no sales team, no project manager and no office overhead. The same person sells, designs and codes the project, so there is no design-to-development handover cost either. On top of that, the parts that repeat on every project — authentication, form infrastructure, the admin-panel skeleton — are already built, so you pay only for what is specific to you. What's traded away is the number of intermediaries, not the quality: the measured Lighthouse scores of live projects are on this page with the date of the run.
A landing page takes 1-2 weeks, a corporate site 3-6, e-commerce 6-10, an admin dashboard 4-8 and an automation setup 2-4. On small and mid-scale projects that date is written into the contract. Custom software and mobile apps run 10-20 weeks and are dated stage by stage instead.
On small and mid-scale projects the delivery date is a contract term. For a delay on my side, 5% of the project fee is deducted per full week, capped at 20%. If the delay comes from content, approvals or a third-party service the clock stops, and the contract lists exactly which situations do that.
Yes, both. User experience and interface design, front-end and back-end development, integrations and the launch process all run through one person. A decision made in design doesn't get lost on the way to development, and the waiting time between two parties never appears.
Yes, there's a separate service for exactly that. The first call is free: you describe what you do and where it jams, and I give you my first read. If we continue, I map your processes and report in numbers how many hours each task costs per month and what digitising it would return. The report is yours, and you are not obliged to commission the development from me.
No. Hosting, domain, licence and third-party service fees are separate and are paid from accounts opened in your own name. That is deliberate: because the accounts are yours, you can continue with someone else whenever you want.
Yes. On a one-off project, the source code, the Figma design files and every account are yours once the work is complete, with no obligation to keep working with me. If you continue on a monthly service, the working copy stays with me so the code stays current, and transfers to you in its latest state when the agreement ends.
Yes. Turkish clients work in Turkish and in lira; international clients in English and in US dollars, against a separate fixed USD rate card rather than a converted one. Everything runs remotely; I'm based in Istanbul.
Large enterprise transformation programmes needing five parallel teams, critical systems that require guaranteed 24/7 response, and projects where the scope is meant to stay vague. I also decline automation that won't pay for itself — a task costing two hours a month rarely does — and I say so at the proposal stage.
Starting something new?
Tell me about your product idea, the problem you have today or the experience you want to improve. Your message reaches me directly.
I review your request and reply with the right scope and a clear next step. I work remotely in English, from the Istanbul time zone (GMT+3).