Software Consultant

• CTO of UK-based tourism-tech startup; led 8 engineers to launch a marketplace with 10k+ listings in 4 months.
• Built full stack: React, Tailwind, React Native, NestJS, Stripe integration, booking engine & host/customer messaging.
• Managed distributed team across UAE, UK, Turkey, and South Africa.

Chief Technology Officer

• Joined early-stage startup (7th employee), later promoted to Lead Frontend (managed 5 engineers).
• Built custom SPA engine rendering e-commerce sites from backend JSON.
• Created drag-and-drop PageBuilder for modular e-commerce site generation.

Lead Front-End Developer

• Delivered dozens of projects for government, aviation, politics, banking, and SaaS.
• Key projects: Turkish Airlines (PhoneGap app), “Ayın Tarihi” government project, Recep Tayyip Erdoğan personal site, digital bank website.
• Contributed to SaaS “Dooing” (frontend + backend with PHP).

Front-End Developer

• Developed and maintained 4 e-commerce brands: FLO, Lumberjack, Ninewest, Kinetix.
• Completed 4+ large-scale projects, integrated Google Analytics & GTM.
• Fixed UI bugs and improved performance across web & mobile.

Senior Front-End Developer

Senior Software Engineer

• Delivered frontend for multiple client e-commerce projects using a modular architecture.
• Actively contributed to product evolution from static modular sites to a dynamic, backend-driven SPA system.
• Collaborated closely with backend engineers to define API contracts and optimize frontend data consumption.

• Stabilized a failing React frontend and rebuilt entire platform with Next.js in 1 month.
• Led a 3-person frontend team focused on mobile web performance.
• Worked in distributed team across UK & Turkey.

• Owned mobile web screens and performance optimization.
• Integrated Google Analytics, GTM, MixPanel.
• Fixed UI bugs and optimized outsourced web project for production.

• Founded and developed a SaaS platform for UAE travel & visa agencies.
• Delivered end-to-end: multi-language, multi-currency, SEO landing pages, WhatsApp bot, payments.
• Fully engineered with Next.js, Node.js, PostgreSQL, React Native. 
• Currently live with UAE clients.

Founder & Lead Engineer

• Founded Diojen Tech to provide B2B contracting and consulting services.
• Delivering high-impact software engineering for startups and enterprises across SaaS, fintech, tourism-tech, and e-commerce.
• Clients include Boatsy (tourism-tech marketplace, UK/UAE), Machinarium (Boyner, Eve, Colendi), and multiple UAE-based startups.
• Focus on full-stack development (React, Next.js, Node.js, React Native, PostgreSQL) and performance optimization.

Founder & Principal Consultant

• Led Boyner mobile redesign with React Native, delivered full Shopify Hydrogen.js project for EveShop.
• Built EveShop mobile app (React Native & Expo) and Pluto mobile app.
• Delivered projects for Colendi, PınarOnline, NadirGold, and more; rebuilt NadirGold’s site with React for high performance.

Senior Software Developer

Technical Founder | Building Growty.ai & Asistan.ae | 14 Years in Software | Ex-CTO

github

Know about Ozgur Sagiroglu's work experience, education, bootcamps, certifications, and much more. Ozgur Sagiroglu