
Software & Web Developer
ongun@ongundemirag.com
© OngunDemirag- 8 / 2026
Currently Senior Customer Support Engineer at Web Scribble (USA, remote), helping organizations ship and support web products with tools like HubSpot, Salesforce, Slack, and LiveChat — while also delivering responsive single-page applications. Previously a JavaScript & full-stack developer at Digital Strategies, working on cryptocurrency, blockchain, and Web3 experiences including MetaMask flows and ERC-20 / ERC-721 integrations. Earlier roles at Arimed combined UI design, ECMAScript CAD tooling, and electrical engineering automation.
Across freelance and product work since 2018, I have shipped company sites, marketplaces, mentorship platforms, job-automation products (Apllie / Automated Bots), dashboards, and SaaS-style apps. I care about modern frameworks, clean UX, and upgrading older systems with practical, maintainable technology.
Experience
7+ years
Focus
Full-stack & automation
Based in
Poland, Europe
Stack
Next.js · React · Python
Build responsive, production-ready apps with Next.js, React, TypeScript, and Tailwind CSS — from company sites to SaaS dashboards and marketplaces.
Ship browser and workflow automation with Python, Selenium, and custom tooling — including job-apply products like Apllie / Automated Bots.
Connect front ends to APIs and third-party systems, optimize data flow, and support stacks involving HubSpot, Salesforce, Slack, and LiveChat.
Experience with crypto/Web3 product work: MetaMask flows, helper scripts, and ERC-20 / ERC-721 token integrations for play-to-earn and NFT experiences.
Design interactive interfaces with Figma, plus engineering-side UI work in Qt and KivyMD, and CAD/script automation from earlier electrical engineering roles.
Improve speed, scalability, and reliability of existing web apps — modernizing older codebases while keeping delivery practical for clients and teams.
As a Senior Customer Support Engineer, translate product issues into clear fixes and docs so clients, support, and engineering stay aligned.
Comfortable in scrum/git environments across remote US and European teams. Strong English communication and collaborative delivery from concept to launch.