David Dai - Policy Specialist & Analyst for DACH Market

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Berlin, Germany

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Experience

May 2023 - Present

3 years 4 months

Policy Specialist & Analyst

Tiktok GmbH / Bytedance Ltd.

Evaluated pain-points of moderation process & strategy
Conducted lean moderation process and integration of policy issues to improve core metrics KPI, moderation accuracy and consistency
Collaborated across functions to handle impactful escalations and maintain platform safety
Conducted agile mechanisms to prevent harmful content such as hate speech, fake news, misinformation on events like German Election (2025), Olympic Games Paris (2024), and harmful AIGC
Collaborated with product and data science teams to improve the efficiency and accuracy of AI moderation processes
Applied techniques including RLHF with high-quality data labeling, prompt engineering, model refinement by translating policy wording into decision trees
Automated processes with Python coding
Created SOPs and metrics for model iteration and result tracking

Nov 2021 - May 2023

1 year 7 months

DACH Market Specialist

Tiktok GmbH / Bytedance Ltd.

Partnered with cross-functional teams to conduct in-depth analysis of core quality metrics (FNP/FPR, accuracy, F1 score)
Led initiatives resulting in measurable enhancements, including lean moderation processes to be more agile and controllable
Developed customized dashboards and datasets using SQL to transform raw metrics into clear visualizations and actionable insights for quality monitoring
Oversaw the end-to-end escalation process for critical content safety issues and facilitated company-wide rollout of new moderation policies

Nov 2020 - Oct 2021

1 year

Quality Analyst

Tiktok GmbH / Bytedance Ltd.

Reviewed and improved content moderation quality to avoid false overkill and violation leakage
Defined measurable key quality metrics including moderation accuracy using DMAIC method and improved metrics significantly through root-cause analysis
Developed tools with SQL and advanced spreadsheet skills to extract insights from raw data, detect anomalies, and calculate moderator performance

Nov 2019 - Jun 2020

8 months

Internship + Thesis

Fraport AG

Contributed to analysis and improvement of airport operations by reducing and optimizing turnaround time (TAT) of aircraft
Completed bachelor thesis on simulating aircraft capacity from an airport perspective using operations research models in Excel-VBA

Oct 2018 - Jul 2019

10 months

Working Student

QuaRisMa GmbH

Programmed neural networks with Python for pattern recognition
Applied statistical methods using R and Python
Implemented quality management processes using Lean Six Sigma approach with Minitab

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Media and Entertainment, Information Technology, Professional Services, and Transportation.

Media and Entertainment

Information Technology

Professional Services

Transportation

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Quality Assurance, Operations, Information Technology, Business Intelligence, and Research and Development.

Quality Assurance

Operations

Information Technology

Business Intelligence

Research and Development

Skills

Advanced Skills In Ms-Offices With Vba / Macro
Database-Management With Sql
Data Analysis/Science With Python, R And Matlab
Basic Programming Knowledge In C++ And Java
Quality Management - Lean Six Sigma Approach

Languages

German

Native

Chinese

Native

English

Advanced

Education

Oct 2016 - Jul 2020

Darmstadt University of Applied Sciences

Bachelor of Science, Applied Mathematics · Applied Mathematics · Darmstadt, Germany

Oct 2013 - Jul 2016

TU Darmstadt

Electrical and Computer Engineering · Darmstadt, Germany

Statistics

Experience

Total positions 5

Experience in Media and Entertainment 6 y

Avg length 1 y 5 m

Longest experience 3 y 3 m

Expertise

Recent roles Policy Specialist & Analyst, DACH Market Specialist, Quality Analyst

Main industries Media and Entertainment, Information Technology, Professional Services

Main business areas Quality Assurance, Operations, Information Technology

Qualifications

Highest degree Bachelor

Profile

Created

November 2025

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Frequently asked questions

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David is based in Berlin, Germany.

David speaks the following languages: German (Native), Chinese (Native), English (Advanced).

David has at least 7 years of experience. During this time, David has worked in at least 5 different roles and for 3 different companies. The average length of individual experience is 1 year and 5 months. Note that David may not have shared all experience and actually has more experience.

Based on recent experience, David would be well-suited for roles such as: Policy Specialist & Analyst, DACH Market Specialist, Quality Analyst.

David's most recent position is Policy Specialist & Analyst at Tiktok GmbH / Bytedance Ltd..

In recent years, David has worked for Tiktok GmbH / Bytedance Ltd..

David is most experienced in industries like Media and Entertainment, Information Technology, and Professional Services. David also has some experience in Transportation.

David is most experienced in business areas like Quality Assurance, Operations, and Information Technology. David also has some experience in Business Intelligence and Research and Development.

David has recently worked in industries like Media and Entertainment and Information Technology.

David has recently worked in business areas like Quality Assurance, Operations, and Information Technology.

David holds a Bachelor in Applied Mathematics from Darmstadt University of Applied Sciences and a Bachelor in Electrical and Computer Engineering from TU Darmstadt.

David is immediately available full-time for suitable projects.

Daily Rate Distribution

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<€640 €640-800 €800-960 €960-1120 €1120+

The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.

Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.

Average rates for similar positions

Rates are based on recent contracts and do not include FRATCH margin.

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Daily rate avg. 941 €

The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.

1200

900

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Median rate 1000 €

The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.

Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.