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Founder & Lead Engineer
Istanbul, Turkey · Working globally
I am Halil Berkay Sahin, the founder and lead engineer of TheCodeVolt. I started TheCodeVolt because the traditional agency model is broken: clients pay for account managers, project coordinators, and layers of overhead before a single line of code gets written. I do the opposite — I work directly with clients as a senior engineer, owning the architecture, writing the code, and joining every call.
I build production-grade web platforms, mobile apps, and AI integrations for businesses that need real software, not slideware. My focus is on the full stack — from system architecture and database design to frontend interaction and deployment infrastructure. Every project I take on, I personally own from kickoff to launch.
I specialize in Next.js, React, TypeScript, React Native, Flutter, and AI integrations using OpenAI, LangChain, and on-premise LLMs. I have shipped e-commerce marketplaces, fintech platforms, AI-powered SaaS products, and bilingual marketing sites. My work is documented through TheCodeVolt's portfolio and the engineering blog where I write about real production decisions.
What I am not: a generalist who outsources everything, a sales-first agency, or someone who promises everything to win a deal. I tell clients honestly when their idea needs revision, when the scope is wrong, or when a simpler tool would serve them better. Long-term trust beats short-term billing.
No account managers between you and the engineer. You talk to the person writing the code.
Every Friday you get a working build to test. No black boxes, no months of 'almost done'.
Detailed proposal before we start. Milestone-based payments tied to deliverables. No hourly surprises.
If your idea needs to change, I tell you. If a simpler tool serves you better, I recommend it. Long-term trust over short-term billing.
15 minutes, no commitment.