Research Crawling Engineer

Location: Remote - Must have a 6 hour overlap with EST

Remote | Full-time

Compensation: $80K - $175K

We are hiring on behalf of our client who is a technical infrastructure firm specializing in the delivery of massive-scale web data to organizations developing advanced artificial intelligence models. The organization supports high-capacity bandwidth-sharing networks and operates a distributed crawler capable of accessing high-quality public web data at a global scale. Additionally, the team has engineered sophisticated pipelines for the ingestion, segmentation, and annotation of billions of multimedia files, facilitating dataset creation for frontier research labs.

The organization operates as a lean, technical team that prioritizes speed and direct execution. As a Research Crawling Engineer, the successful candidate will design and operate large-scale web data acquisition systems. This role encompasses distributed systems, scraping infrastructure, and data pipelines, focusing on providing high-quality inputs for research and model development.

Key Responsibilities

• Construct and maintain large-scale web crawlers across diverse domains.
• Design high-throughput, fault-tolerant systems for data collection, managing volumes ranging from millions to billions of URLs per day.
• Navigate anti-bot systems, rate limits, and dynamic, JavaScript-heavy websites.
• Develop robust pipelines for data cleaning, deduplication, filtering, and normalization.
• Build and maintain datasets specifically structured for research and machine learning model training.
• Monitor and optimize crawl performance, coverage, and data quality through rapid iteration.
• Collaborate with research teams to ensure data collection efforts align with modeling requirements.
• Optimize infrastructure to ensure cost-efficiency, low latency, and reliability.

Requirements

• Extensive programming experience in one or more of the following: Go, Rust, Python, Java, or C++.
• Proven experience in building web crawlers or large-scale data pipelines.
• Solid understanding of HTTP, networking protocols, and browser behavior.
• Familiarity with distributed systems and parallel processing techniques.
• Experience handling large datasets, ideally at the terabyte to petabyte scale.
• Demonstrated ability to debug and maintain systems within unstable or adversarial environments.

Preferred Qualifications:

• Experience with NLP pipelines or dataset curation for machine learning.
• Familiarity with LLM pre-training data or retrieval systems.
• Practical experience with headless browsers (e.g., Playwright, Puppeteer, or Chrome DevTools Protocol).
• Knowledge of proxy systems, IP rotation, and large-scale request orchestration.
• Background in data quality evaluation or benchmarking.
• Experience running workloads on cloud or bare-metal infrastructure.

Benefits

• Impactful Opportunity: Contribute to the development of a web-scale crawler and knowledge graph at the forefront of AI data accessibility.
• High-Performance Culture: Join a lean, low-ego team that prioritizes high output and professional growth.
• Remote Work: This position is part of a fully remote team, offering flexibility and autonomy.
• Competitive Compensation: A package including a competitive salary, comprehensive benefits, and equity, commensurate with experience and the ability to operate at scale.



Interview Process

1. Recruiter Coordination Call
2. Hiring Manager Interview
3. Founder / CEO Interview
4. Secondary Executive Interview
5. Final Interview

Due to the high volume of applications we anticipate, we regret that we are unable to provide individual feedback to all candidates. If you do not hear back from us within 4 weeks of your application, please assume that you have not been successful on this occasion. We genuinely appreciate your interest and wish you the best in your job search.

Commitment to Equality and Accessibility:

At MLabs, we are committed to offer equal opportunities to all candidates. We ensure no discrimination, accessible job adverts, and providing information in accessible formats. Our goal is to foster a diverse, inclusive workplace with equal opportunities for all. If you need any reasonable adjustments during any part of the hiring process or you would like to see the job-advert in an accessible format please let us know at the earliest opportunity by emailing human-resources@mlabs.city.

MLabs Ltd collects and processes the personal information you provide such as your contact details, work history, resume, and other relevant data for recruitment purposes only. This information is managed securely in accordance with MLabs Ltd’s Privacy Policy and Information Security Policy, and in compliance with applicable data protection laws. Your data may be shared only with clients and trusted partners where necessary for recruitment purposes. You may request the deletion of your data or withdraw your consent at any time by contacting legal@mlabs.city.