Independent product designer & full-stack developer

Turning ideas
into products
that work.

I turn complex requirements into simple user experiences, and strong ideas into web and mobile products that scale.

Product systemLive
UXclarity first
01system, every screen
integrations.tsconst product = await build({
  experience: clear,
  system: scalable
});
UI / UX
FULL-STACK

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.

01

I treat design and development not as separate deliverables, but as two sides of the same product decision.

Where the price difference comes from

The same work,
well under
agency price.

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.

01

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.

02

No design-to-code handover cost

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.

03

Parts that aren't rewritten every time

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.

04

Price isn't set by negotiation

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.

What you don't get in return
  • I take on a limited number of projects at a time. If the calendar is full it means waiting, and I say so upfront.
  • There is no dedicated account manager and no 24/7 call centre; you deal with me directly.
  • Large enterprise transformation programmes that need five teams in parallel are not my scale.
  • If I think you shouldn't do a piece of work, I'll say so rather than quote for it.
How pricing works

Delivery commitment

The date is in
the contract.

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.

01

Landing page: 1-2 weeks

A page built around a single offer goes live, with measurement already wired up, inside two weeks when the content is ready.

02

Corporate website: 3-6 weeks

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.

03

Automation and dashboards: 2-8 weeks

Process consulting is reported in 1-2 weeks, an automation setup runs 2-4, and an admin dashboard 4-8.

When the clock stops
  • When content, images or information I'm waiting on doesn't arrive on time
  • While a stage sent for approval is sitting with you
  • When a third party — payment provider, shipping integration — delays approval or access
  • When the scope grows afterwards, in which case a new date and fee are agreed in writing

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

Who is
Kaan Erenmemisoglu?

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.

Location
İstanbul, Türkiye · Remote
Focus
Product design and full-stack development
Experience
Since 2019
Languages
Turkish, English

Selected live projects

Live, working
digital experiences.

Look at the projects I designed and shipped, directly in their live environments.

3D Era website homepage Live project
3D Marketplace · Web platform

3D Era

A digital platform bringing 3D models, designers and local manufacturers into one marketplace experience.

Lighthouse · Desktop3 August 2026 · Lighthouse 12.8 · median of 3 runs
91Performance
96Accessibility
100Best practices
100SEO
Ossi Jewelry website homepage Live project
Premium e-commerce · Brand experience

Ossi Jewelry

A brand site presenting a natural stone and sterling silver collection as an editorial shopping experience.

Lighthouse · Desktop3 August 2026 · Lighthouse 12.8 · median of 3 runs
99Performance
98Accessibility
100Best practices
100SEO

Concept lab

Three product worlds.
One system approach.

Concept work that makes my skill set and product approach visible across different use cases.

01 / Concept workSaaS · Admin · Data

Atlas Operations

A role-based admin panel that turns dense operational data into readable decisions.

  • Dashboard UX
  • Role-based access
  • Data visualization
ATLAS
Operations overview
02 / ConceptCommerce
Curated commerce
Form, function,
flow.
Curated product experience

Loop Commerce

A mobile-first shopping experience that removes friction from product discovery through to payment.

03 / ConceptMobile service
Good morningWhat can we
solve today?
Services nearby

Near Mobile

A service product combining location, booking and notification infrastructure in a calm mobile experience.

Capability map

An approach that sees
the whole product.

From discovery to launch, I handle user experience, interface, technical systems and integrations as one whole.

01

Product strategy & UX

Discovery, information architecture and prototyping that bring the idea, the user need and the business goal into one product flow.

DiscoveryUser flowsWireframePrototype
02

Interface systems

A component and design system approach for consistent, accessible and maintainable interfaces on web and mobile.

FigmaDesign systemsResponsiveA11y
03

Full-stack web

From landing page to SaaS product: modern frontend, secure backend, database and admin panel development.

ReactNext.jsTypeScriptAPI
04

Mobile & integrations

Cross-platform mobile products with payment, location, notification, authentication and third-party service integrations.

Cross-platformPaymentsMapsPush
React+Next.js+TypeScript+Node.js+REST / GraphQL+PostgreSQL+Supabase+Firebase+Flutter+React Native+Cloudflare+Docker+React+Next.js+TypeScript+Node.js+REST / GraphQL+PostgreSQL+Supabase+Firebase+Flutter+React Native+Cloudflare+Docker+

How I work

A visible process
that removes doubt.

At every step I share plainly what has been completed, which decision was made and what comes next.

01

Discovery

I get clear on the need, the user and the measure of success.

02

Design

I make the flows visible and test the product before it is coded.

03

Development

I build the approved system cleanly and so that it can scale.

04

Launch

I plan testing, measurement and post-launch support.

Service catalogue · 2026

See what I do
and what each
package covers.

Clearly scoped packages for web, mobile, UI-UX, automation, process consulting, brand identity, admin dashboards and maintenance.

2026 · Service summaryScope
Product discoveryUpfront work that settles scope and roadmap
Maintenance and supportAnnual agreement after launch
ProposalFixed price once the scope is settled
Post-launch plans

As the project grows, so does the maintenance scope.

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
Small project · Brochure site, landing page

Standard Maintenance

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.

Medium project · Store, admin dashboard

Maintenance + Support

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.

Large / critical project · SaaS, mobile, critical system

Full Maintenance

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.

Ongoing service options

Added to a maintenance package as needed.

Managed infrastructure

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.

Analytics reporting

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.

Content operations

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.

Technical SEO health

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.

Conversion optimisation

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.

What do these terms mean?
Server
The always-on computer where your site's files live and from which they are served to visitors.
Hosting
Renting that server; the service that keeps your site online.
SSL certificate
The padlock in the address bar. It encrypts what visitors type in; without it the browser shows a “not secure” warning.
Uptime
How long your site stays up without interruption. Uptime monitoring means I know the moment your site goes down.
Backup
A copy of your site and data kept regularly. If something goes wrong, the site is restored to its earlier state.
Analytics
The measurement system that answers “who comes to my site, and what do they do?”
SEO
Everything done to make your site findable when someone searches on Google.
Indexing
Google recording your page and showing it in search results. A page that isn't indexed never appears in search.
Conversion
A visitor becoming a customer: filling in a form, calling you or making a purchase.
Integration
Two systems talking to each other automatically; for example your site connecting to a payment or shipping provider.

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.

DiscoveryProposalDesignDevelopmentLaunch

Frequently asked

Price, timing and
how I work.

The questions I get most, answered without the detour. These are the same answers I give over email.

What does it cost to have a website built?

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.

Why are you cheaper than agencies?

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.

How quickly does my site go live?

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.

What happens if the delivery date is missed?

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.

Do you do both the design and the code?

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.

I want to digitise my business processes but don't know where to start. Can you help?

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.

Does the quote include hosting and domain?

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.

Do I own the source code and design files?

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.

Do you work with clients outside Türkiye?

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.

What kind of work do you turn down?

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?

Good ideas
can't wait.

Tell me about your product idea, the problem you have today or the experience you want to improve. Your message reaches me directly.

01

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).