Umer J.

Senior Web Scraping Engineer

Freelance / Self-Employed • Freiberufler

Aug 2023 - Present • 2 yrs 9 mos

Designing enterprise-level web scraping systems for global clients requiring reliable, scalable data extraction. I build advanced crawlers capable of handling JavaScript sites, anti-bot protections, logins, APIs, pagination, and large-scale datasets. Delivered automated pipelines that collect millions of records efficiently with proxy rotation, concurrency tuning, and optimized parsing logic. Known for solving complex scraping challenges and delivering production-ready solutions with clean structured output.

Web Automation Developer

Nexora Automation Solutions • Vollzeit

Feb 2023 - Apr 2024 • 1 yr 2 mos

Developed browser automation bots for repetitive web tasks such as data collection, account actions, and workflow automation. Built scripts capable of interacting with dynamic content, handling sessions, solving navigation challenges, and extracting structured information. Focused on reliability, error handling, and automation stability for long-running processes.

Data Extraction Specialist

Remote Contract Projects

Jan 2022 - Feb 2023 • 1 yr 1 mo

At Vertexa Digital Systems, I collaborated with startups and digital agencies to design and deploy reliable data extraction solutions for directories, e-commerce platforms, and large listing websites. I developed custom scraping systems tailored to each client’s specific requirements, including handling dynamic filters, product variations, pagination, and hidden API endpoints. By optimizing selectors, concurrency settings, and request logic, I significantly improved crawler efficiency—reducing runtime by up to 70% on large-scale projects. I consistently delivered clean, structured, and analysis-ready datasets in formats such as CSV, JSON, and Excel, ensuring accuracy, scalability, and seamless integration into client workflows.