Sezer Sagir - AI Evaluation & RLHF Specialist, Python

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Available

Bruchsal, Germany

Check rate

Experience

Jul 2025 - Oct 2025

4 months

Karlsruhe, Germany

On-site

Intern, Digital Innovation Lab

CyberForum e.V.

Synthesised 15+ SME case studies on AI-adoption barriers into a structured strategic analysis, and co-organised three startup events within Europe's largest regional high-tech network (1,400+ member companies).

Apr 2025 - Present

1 year 6 months

Remote

AI Quality Assurance & RLHF Specialist

Freelance via RWS & Volga Partners

Review and compare paired annotator and model outputs at senior classification level in large-scale RLHF pipelines — auditing ~120 outputs per week against structured quality rubrics and labeling edge cases — within a team of 4–5 auditors overseeing 13–14 annotators.
Write structured, rubric-based feedback that reduced annotator error rates by 15–25%; refined evaluation guidelines to close edge-case ambiguity, improving cross-team consistency by ~20%.
Maintain a ~98% personal QA acceptance rate across 3,000+ structured evaluations of complex code, logic, and language tasks spanning leading LLMs.
Deliver recurring auditing, annotation, and evaluation-guideline development for Volga Partners, supporting generative-AI initiatives at major technology companies since October 2025.

Industry experience

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

Experienced in Information Technology.

Information Technology

Business area experience

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

Experienced in Quality Assurance, Research and Development, and Strategy.

Quality Assurance

Research and Development

Strategy

Summary

AI quality-assurance and RLHF specialist with senior-level auditing experience across large-scale generative-AI evaluation programmes for leading AI companies, via RWS and Volga Partners. Reviews paired model and annotator outputs against structured quality rubrics, labels edge cases, and writes retraining-ready feedback for modelling teams — 3,000+ structured evaluations at a ~98% QA acceptance rate. Also builds the tooling the work needs, most recently a keyboard-driven TTS A/B review interface used in live evaluation sessions.

Skills

Rlhf Evaluation
Quality-Rubric Review
Paired-Output Comparison
Edge-Case Labeling
Structured Feedback Writing
Bias & Error Analysis
Evaluation-Guideline Development
German–English Bilingual Review
Evaluation Tooling
Programming: Python (Proficient), Java, Javascript / Html / Css, Sql (Sqlite)
Cloud & Tools: Aws, Terraform, Google Analytics, Tableau, Ms Office (Advanced), Google Workspace, Canva, Photoshop
Eval Platforms: Amazon Sagemaker Ground Truth, Scale Ai, Labelbox, Superannotate
Collaboration: Microsoft Teams, Slack, Lark

Languages

German

Native

Turkish

Native

English

Advanced

Japanese

Intermediate

Education

Oct 2026 - Present

Karlsruhe Institute of Technology (KIT)

B.Sc. · Information Systems · Karlsruhe, Germany

Jun 2025 - Oct 2025

Justus-Knecht-Gymnasium

Abitur · Math, Physics, English · Karlsruhe, Germany

Statistics

Experience

Total positions 2

Experience in Information Technology 1.5 y

Avg length 10 m

Longest experience 1 y 5 m

Global experience

Countries worked in 1 (Germany)

Primary country Germany

Expertise

Recent roles Intern, Digital Innovation Lab, AI Quality Assurance & RLHF Specialist

Main industries Information Technology

Main business areas Quality Assurance, Research and Development, Strategy

Qualifications

Highest degree Bachelor

Profile

Member since

September 2026

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Frequently asked questions

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Sezer is based in Bruchsal, Germany and can operate in on-site, hybrid, and remote work models.

Sezer speaks the following languages: German (Native), Turkish (Native), English (Advanced), Japanese (Intermediate).

Sezer has at least 1 year of experience. During this time, Sezer has worked in at least 2 different roles and for 2 different companies. The average length of individual experience is 1 year and 9 months. Note that Sezer may not have shared all experience and actually has more experience.

Based on recent experience, Sezer would be well-suited for roles such as: Intern, Digital Innovation Lab, AI Quality Assurance & RLHF Specialist.

Sezer's most recent position is Intern, Digital Innovation Lab at CyberForum e.V..

In recent years, Sezer has worked for CyberForum e.V. and Freelance via RWS & Volga Partners.

Sezer is most experienced in industries like Information Technology.

Sezer is most experienced in business areas like Quality Assurance, Research and Development, and Strategy.

Sezer holds a Bachelor in Information Systems from Karlsruhe Institute of Technology (KIT).

Sezer is immediately available full-time for suitable projects.

Daily rate distribution

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<€720 €720-800 €800-880 €880-960 €960+

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

Average rates for similar positions

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Daily rate avg. 850 €

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

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Median rate 840 €

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.

Calculated based on our freelancers’ daily rates as of 15 Sep 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.