Skip to content
BackNov 8
Mariana A.

Mariana A.

Scientific QA Specialist | Data Annotation & Regulatory Documentation

I’m a Biotechnology Engineer with a Master’s in Molecular Biology Applied to Biotechnological Companies and over three years of international experience in transnational pharmaceutical and biotechnology industries. Specifically, I've worked in Regulatory Affairs and Quality Assurance for companies such as Gilead Sciences, Eli Lilly, and Reckitt, supporting scientific documentation and compliance with international standards (ICH, GDP, eCTD). My experience includes data validation, document review, and quality control and assurance for scientific and regulatory submissions. I’m highly detail-oriented and skilled in analyzing and organizing complex technical information with accuracy and consistency. Currently, I specialize in scientific data annotation, AI model evaluation, and quality assurance for life science projects. I bring precision, critical thinking, and strong communication skills to every task, ensuring data integrity and reliability.

🇲🇽Mexico City, Mexico$18/hr100% JSSSince Oct 2025

Earnings and projects

MRR
$26

Last 6 months ÷ 6

World#161,689 / 412k
🇲🇽Country#1,548 / 3,563
Revenue, last 30 days
$0

Last 6 months: $153

Total earnings
$5.2k

Billed in all: $5.5k

World#250,969 / 412k
🇲🇽Country#2,275 / 3,563
Per project
$5.2k

$153 in the last 6 months

World#33,343 / 412k
🇲🇽Country#426 / 3,563
Projects, last 6 months
1

Across 2 contracts

0% fixed100% hourly
World#128,096 / 412k
🇲🇽Country#955 / 3,563
Projects in all
1

Across 5 contracts

0% fixed100% hourly
World#360,675 / 412k
🇲🇽Country#2,774 / 3,563

Earnings, last 30 days

$5.5kNothing earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$5.4k$5.5k$5.6k$5.7kOct 9Oct 24Nov 8

Skill rankings: Top 32% in Biotechnology

Ranked by MRR among everyone on Upwork with the skill.

  1. #22Clinical Trial Management System48 freelancers · 🇲🇽 #1Top 46%
  2. #88Biotechnology274 freelancers · 🇲🇽 #4Top 32%
  3. #100Molecular Biology284 freelancers · 🇲🇽 #5Top 35%
  4. #107Document Control252 freelancers · 🇲🇽 #4Top 42%
  5. #153Pharmaceutical Industry390 freelancers · 🇲🇽 #2Top 39%
  6. #233Literature Review486 freelancers · 🇲🇽 #2Top 48%
  7. #289Research Documentation740 freelancers · 🇲🇽 #3Top 39%
  8. #364Regulatory Compliance759 freelancers · 🇲🇽 #2Top 48%