Senior Software Engineer (Web Scraping, Data acquisition, Data collection)

Short Summary

Senior Software Engineer (Web Scraping, Data acquisition, Data collection) with NielsenIQ. Design and build distributed scraping architectures that can scale across thousands of domains. Reverse engineer APIs and mobile apps using tools like Frida , mitmproxy , Charles Proxy, burp and many more. Detect common anti-bot measures (like JavaScript checks or browser behavior detection) to build crawlers that adjust to appear…

Key Details

• Position / opportunity: Senior Software Engineer (Web Scraping, Data acquisition, Data collection)
• Organization: NielsenIQ
• Country / coverage: Spain
• Location: Madrid/Barcelona/Valladolid , MH, Spain
• Work arrangement: On-site
• Opportunity type: Volunteer opportunities
• Sector: Education
• Compensation: Not specified
• Duration: Not specified
• Start date: 2026-08-05
• Application deadline: Not specified

Description

Design and build distributed scraping architectures that can scale across thousands of domains. Reverse engineer APIs and mobile apps using tools like Frida , mitmproxy , Charles Proxy, burp and many more. Detect common anti-bot measures (like JavaScript checks or browser behavior detection) to build crawlers that adjust to appear more human-like. Lead technical innovation in scraping: identify edge cases, prototype new approaches, and share knowledge with the team. Set up anomaly detection and monitoring to detect blockers or failures early What You Bring 5+ years of experience with Python and large-scale scraping projects. Deep understanding of anti-bot technologies and how to bypass them, fingerprinting, WAFs, JavaScript challenges, etc. Experience working with Scrapy , Requests , httpx , Selenium , Playwright , or custom headless browser drivers. Skilled at handling proxies (residential, datacenter, rotating), session management, cookie injection, and TLS tweaking. Strong debugging skills across browser, HTTP traffic, and device-level interactions. You think independently and enjoy solving problems no one has solved before. Familiarity with structured storage formats (Parquet, Avro), or real-time stream processing. Good knowledge of databases like MongoDB, InfluxDB, and Redis, including how they work and how to optimize them. ➕ Bonus Skills Experience with real-device simulation for mobile scraping. Comfortable building and maintaining distributed task queues (Celery, Kafka, etc.). Experience scraping high-security platforms or mobile-first environments. Exposure to Linux or cloud environments (AWS, GCP, etc.). Basic understanding of Kubernetes, Cloud Run, and Cloud Functions to deploy and orchestrate scraping workloads. Why Join NIQ Digital shelf You'll have ownership and freedom to experiment, backed by a team that thrives on innovation. You'll work with people who are truly passionate about data and know how to use it well. Your ideas will shape our strategy, tools, and success — you won’t just follow the Playbook; you’ll write about it. Friendly and transparent work culture, competitive salary, flexible hours, and the chance to grow fast in a high-impact role. Our Benefits Flexible working environment Volunteer time off LinkedIn Learning Employee-Assistance-Program (EAP) NIQ may utilize artificial intelligence (AI) tools at various stages of the recruitment process, including résumé screening, candidate assessments, interview scheduling, job matching, communication support, and certain administrative tasks that help streamline workflows. These tools are intended to improve efficiency and support fair and consistent evaluation based on job-related criteria. All use of AI is governed by NIQ’s principles of fairness, transparency, human oversight, and inclusion. Final hiring decisions are made exclusively by humans. NIQ regularly reviews its AI tools to help mitigate bias and ensure compliance with applicable laws and regulations. If you have questions, require accommodations, or wish to request human review were permitted by law, please contact your local HR representative. For more information, please visit NIQ’s AI Safety Policies and Guiding Principles: https://nielseniq.com/global/en/info/niqs-ai-safety-policies/ About NIQ NIQ is the world’s leading consumer intelligence company, delivering the most complete understanding of consumer buying behavior and revealing new pathways to growth. In 2023, NIQ combined with GfK, bringing together the two industry leaders with unparalleled global reach. With a holistic retail read and the most comprehensive consumer insights—delivered with advanced analytics through state-of-the-art platforms—NIQ delivers the Full View™. NIQ is an Advent International portfolio company with operations in 100+ markets, covering more than 90% of the world’s population. For more information, visit NIQ.com Want to keep up with our latest updates? Follow us on: LinkedIn | Instagram | Twitter | Facebook Our commitment to Diversity, Equity, and Inclusion At NIQ, we are steadfast in our commitment to fostering an inclusive workplace that mirrors the rich diversity of the communities and markets…

Responsibilities

• Design and build distributed scraping architectures that can scale across thousands of domains.
• Reverse engineer APIs and mobile apps using tools like Frida , mitmproxy , Charles Proxy, burp and many more.
• Detect common anti-bot measures (like JavaScript checks or browser behavior detection) to build crawlers that adjust to appear more human-like.
• Lead technical innovation in scraping: identify edge cases, prototype new approaches, and share knowledge with the team.
• Set up anomaly detection and monitoring to detect blockers or failures early What You Bring 5+ years of experience with Python and large-scale scraping projects.
• Deep understanding of anti-bot technologies and how to bypass them, fingerprinting, WAFs, JavaScript challenges, etc.

Requirements / Eligibility

• cruitment process, including résumé screening, candidate assessments, interview scheduling, job matching, communication support, and certain administrative tasks that help streamline workflows.
• These tools are intended to improve efficiency and support fair and consistent evaluation based on job-related criteria.
• All use of AI is governed by NIQ’s principles of fairness, transparency, human oversight, and inclusion.
• Final hiring decisions are made exclusively by humans.

How To Apply

Use the Apply now button and follow the instructions on the application page.