micro1 · Finance & specialist
Big Data Engineer
Listed on micro1 as “Big Data Engineer”
What this actually is
You bring your specialist expertise to AI evaluation. The shape of the work varies but the pattern is the same: review outputs, rate quality, write prompts, flag errors. The platform title (Big Data Engineer) reflects the rate band and the expertise required, not the day-to-day work.
Can you do this on your visa?
F-2 / F-4 / F-5 / F-6: open. E-1 to E-7: needs concurrent-employment permit. D-2 / D-4 students: S-3 permit, 20 hr/week cap. D-10 / D-8: case by case.
Korean tax on USD income
First 5 years in Korea: foreign-source income only taxed if remitted into Korea. After year 5: worldwide income. Full tax guide.
Original posting from micro1
Job Title: Big Data Engineer
Job Type: Contractor
Location: Remote
Job Summary: In this role, you'll apply your expertise to help train next-generation AI systems. Your work will shape how models learn, reason, and perform through high-quality, real-world input.
Key Responsibilities:
• Design, build, and maintain scalable big data pipelines and architectures to support robust data solutions.
• Collaborate with cross-functional teams to understand and deliver on data requirements and business objectives.
• Implement data integration, transformation, and processing solutions using Python and relevant big data technologies.
• Develop, manage, and optimize distributed databases and storage systems for efficiency and reliability.
• Monitor, troubleshoot, and enhance data systems to ensure high availability and performance.
• Enforce data quality, security, and governance standards across all solutions.
• Document solutions and communicate complex technical concepts effectively, both in writing and verbally.
Required Skills and Qualifications:
• Proven expertise in big data engineering with hands-on experience building and maintaining large-scale data pipelines.
• Advanced proficiency in Python for data processing, automation, and integration.
• Deep understanding of relational and NoSQL databases, including optimization and management techniques.
• Experience with distributed data processing frameworks (e.g., Hadoop, Spark, Flink).
• Strong foundation in data modeling, ETL processes, and data warehousing principles.
• Excellent written and verbal communication skills, with the ability to convey technical ideas clearly to both technical and non-technical stakeholders.
• Detail-oriented, proactive, and self-motivated, thriving in remote and autonomous work environments.
Preferred Qualifications:
• Prior experience in fast-paced or startup-like environments supporting global teams.
• Expertise with cloud-based big data platforms (e.g., AWS, GCP, Azure).
• Familiarity with machine learning operations and data science workflows is a plus.
Quoted from micro1's public listing on 2026-10-29. We don't edit platform copy; honest framing is in the title and the “what this actually is” block above.
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About micro1
Recruits experts and generalists for AI training projects and lists each role with an hourly range on its own job board. You apply per role, then do a role-specific interview with micro1's AI recruiter.
Is micro1 legit? Our review
A real US company that pays experts in USD through Deel twice a month. The hard part is getting from the Zara AI interview to paid work. Pay, who can join, and how Korean visa and tax rules apply.
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