Arif Ö.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

I build the integrations and automation that connect the systems a business already runs: APIs, AI workflows, payments, e-commerce. 18+ years in software · former CTO at two SaaS and fintech companies · 14 commercial plugins running on live stores today, every one of them through a strict third-party code review · 12 apps shipped to the App Store in Swift. You need something that works in production, not a demo. Built by someone who reads your business process before touching your stack, and who tells you when the honest answer is "you don't need to build this." I don't have client testimonials on Upwork yet, so let me offer the least flattering thing I have instead. Last month a remote-code-execution bug in Next.js got an attacker root on one of my own servers. They installed a miner, two bots exfiltrating credentials, and a root cron backdoor. I found it, closed it, rotated every secret, separated the privileges that let a web exploit become root, and verified every system binary against the distribution's own checksums, so I could prove the OS was clean rather than assume it. The detail that stayed with me: they had disabled log rotation and wiped the logs six days before I noticed. The break-in wasn't the real failure. The real failure was that nothing was watching. That is the standard I hold my own work to, and it is what you are actually hiring. I'm Arif, working solo from Istanbul. That means you get the person who writes the code: no account manager, no quiet handoff to a junior you never spoke to. It also means I take fewer projects at once, so if I don't have room for yours I will say so instead of taking it and going quiet. WHAT CLIENTS HIRE ME FOR - Integrations between systems that were never designed to talk: ERP, accounting, POS, shipping, payment providers, e-commerce. Two-way catalogue, inventory and order sync over REST, built idempotent and retryable instead of a cron job you find out has been dead for three weeks. - AI and LLM features that survive contact with production: retrieval over your own data, document and email processing, agent workflows with real error handling. The hard part is never the model call; it is what happens on the third retry. - Custom WooCommerce and WordPress plugins: HPOS-compatible, background queues on Action Scheduler, written to survive core updates rather than break on them. - Payment, tax and invoicing integrations, including country-specific e-invoicing. - Performance work on slow storefronts, slow admin screens and slow APIs. I measure before touching anything. - Full-stack builds when a single platform isn't enough: .NET Core REST APIs, React and Next.js. HOW I WORK I tell you what the job actually is before you pay anything. If it is a one-hour job, I will say so. I would rather lose the quote than win it dishonestly and argue about scope later. I work on staging or a backup copy. Your production system is never the experiment. I test before I claim. If I say it works on the current version, it means I ran it there, not that it should work. Clear updates, no silence, no surprises. If something turns out harder than estimated, you hear it from me early, not at the deadline. I am new to Upwork and have no reviews here yet. My portfolio below is real, shipped work, and I am glad to start with a small scoped first milestone, an audit or one self-contained piece of the build, so you judge the code rather than the profile. UTC+3 (Istanbul), 30+ hours a week, genuinely available. I am looking for long-term contracts and monthly retainers, not only one-off jobs.