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

NielsenIQ; Województwo mazowieckie; On-site; PLN 120,000 - 170,000; Full time

Benefits offered by this job

Flexible working environment

Volunteer time off

LinkedIn Learning

Employee-Assistance-Program (EAP)

Job summary

NIQ is seeking a senior scraping engineer to design scalable distributed systems for data extraction and visibility across thousands of domains. You will reverse engineer APIs, bypass anti-bot measures, and push technical boundaries with a global team of experts.

You’ll work with Scrapy, Requests, httpx, Selenium, Playwright, and real-device simulations, while handling proxies and advanced debugging across browsers and networks.

Qualifications

• 5+ years of Python and large-scale scraping experience.
• Deep knowledge of anti-bot tech and bypass methods.
• Experience with Scrapy, Requests, httpx, Selenium, Playwright.
• Proxy handling: residential, datacenter, rotating; session control.
• Strong debugging across browser, HTTP traffic, and devices.
• Familiar with Parquet/Avro or real-time streaming concepts.
• Knowledge of MongoDB, InfluxDB, Redis and optimization basics.
• Independent thinker who enjoys solving hard problems.

Responsibilities

• Design and build distributed scraping architectures at scale.
• Reverse engineer APIs and mobile apps using tool suites listed above.
• Detect anti-bot measures and adapt crawlers to appear human-like.
• Lead technical innovation, prototype new approaches, share knowledge.
• Set up anomaly detection and monitoring to catch blockers early.
• Collaborate with Customer Success, Operations, and Data teams.

Skills

Python

Large-scale scraping

Problem solving

Independent thinker

Data analysis

Debugging

Anti-bot concepts

Tools

Frida

mitmproxy

Charles Proxy

burp

Scrapy

Requests

httpx

Selenium

Playwright

headless browsers

Proxies management

Kubernetes (basic)

Celery / Kafka (concepts)

Job description

At NIQ Digital shelf, scraping isn’t just about collecting data, it’s aboutoutsmarting the obstaclesthat stand in the way of visibility. Every day, we processtens of billions of data pointsfrom thousands of sources, both web and mobile, and transform them into actionable insights for the world’s top retailers and brands.

You’ll join a team of60+ scrapers, engineers, analysts, and data lovers from across the globe. As part of our scraping and R&D team, you’ll have space toexperiment, push boundaries, and bring bold ideas to life. You’ll collaborate closely withCustomer Success,Operations, andDatato ensure we extract high-quality, actionable data — fast and at scale.

This isn’t just a coding job. You’ll need tothink like a hacker, move like an engineer, and act like an inventor

• Design and build distributed scraping architectures that can scale across thousands of domains.

• Reverse engineer APIs and mobile apps using tools likeFrida,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

• 5+ years of experience withPythonand large-scale scraping projects.

• Deep understanding ofanti-bot technologiesand how to bypass them, fingerprinting, WAFs, JavaScript challenges, etc.

• Experience working withScrapy,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 haveownershipandfreedomto 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.

• Flexible working environment
• Volunteer time off
• LinkedIn Learning
• Employee-Assistance-Program (EAP)

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‑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

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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 we serve. We believe that embracing a wide range of perspectives drives innovation and excellence.All employment decisions at NIQ are made without regard to race, color, religion, sex (including pregnancy, sexual orientation, or gender identity), national origin, age, disability, genetic information, marital status, veteran status, or any other characteristic protected by applicable laws.We invite individuals who share our dedication to inclusivity and equity to join us in making a meaningful impact.To learn more about our ongoing efforts in diversity and inclusion, please visit the https://nielseniq.com/global/en/news-center/diversity-inclusion