On-site and remote work in Istanbul
Scoping and installation meetings take place on site in Istanbul; development runs with weekly demos, a shared test environment and real-time communication. You get the clarity of face-to-face meetings and the speed of remote work.
Compared to Istanbul agency rates, there's no sales or management layer, so the same scope gets delivered on a more efficient budget, and you work directly with the person writing the code.
Most requested projects in Istanbul
E-commerce and marketplace integrations, fintech and trading platforms, MVP mobile apps for startups, news and content SaaS, and enterprise panel projects make up most of my work in Istanbul. Examples: Number One Trading and ucakbiletcisi.com.
Why businesses in Istanbul work with me
On-site meetings
I'm at your Istanbul office for scoping, installation and training.
Weekly demos
See a working build every week and steer the direction.
Startup-friendly MVP
A fast, scalable first version from idea to launch.
Enterprise discipline
Access control, logging, documentation and SLAs.
Agency, off-the-shelf package or freelance expert?
See at a glance which model delivers the most value for the same budget.
| Criteria | Software Agency | Off-the-shelf / SaaS | Hakan Sevimoğlu |
|---|---|---|---|
| Point of contact | Sales + project manager + team | Support line | The expert who writes the code |
| Cost structure | Office, sales and management layers are priced in | Per-user / monthly license, forever | Development work only |
| Fit to your business | Scope changes need extra contracts | ✕ You adapt to the package | ✓ Software adapts to you |
| Response time | Tickets, meetings, approval chains | Queued | ✓ Direct WhatsApp / phone |
| Technical depth | Depends on who is on the team | Limited customization | ✓ 18 years, every layer from mobile to IoT |
| Maintenance | Knowledge is lost when the team changes | Data risk if the product shuts down | ✓ Supported by the person who built it |
Example projects
A selection of live projects serving real users.
Number One Trading — Trader Analysis Platform
Live charts, analysis sharing and signal tracking for BIST and crypto.
View
ucakbiletcisi.com — Online Flight Booking Platform
Flight search with BiletBank integration, 3D Secure payment, real bank installments, PNR lookup and online check-in.
View
Pingora — Number-Free Messaging
Secure messaging and video calls without sharing a phone number.
ViewHow we work
Free intro call
We clarify needs, existing systems and goals together.
Quote & roadmap
Scope, technology, timeline and budget within 24 hours.
Staged development
Weekly demos and a live test environment.
Launch & support
Go-live, training and ongoing maintenance.
Free pre-analysisThe first meeting and roadmap are completely free, with no obligation.
Staged delivery and approvalYou review each module on a test environment before we move on.
Written scope and rightsScope, delivery and source code rights are defined in the contract.
Frequently asked questions
Do you meet in person in Istanbul?
Yes; on-site meetings in Istanbul are scheduled for the analysis, installation and training phases, and development continues remotely.
How are you different from agencies in Istanbul?
There's no sales or project management layer; you work directly with the expert writing the code, which cuts costs and communication time.
What is your connection to istanbulyazilimci.com?
istanbulyazilimci.com is the freelance developer brand Hakan Sevimoğlu has used for many years.