David Thompson-Ajayi - AI Trainer (NLP & LLM Evaluation)

Q: Where is David based?

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

Q: What languages does David speak?

David speaks the following languages: English (Native), French (Intermediate), German (Elementary) .

Q: How many years of experience does David have?

David has at least 2 years of experience. During this time, David has worked in at least 4 different roles and for 4 different companies . The average length of individual experience is 1 year and 6 months . Note that David may not have shared all experience and actually has more experience.

Q: What is David's latest experience?

David's most recent position is AI Trainer (NLP & LLM Evaluation) at Freelance .

Q: What companies has David worked for in recent years?

In recent years, David has worked for Freelance , Babban Gona , Hamoye AI Labs , and Future Oilfield Services Limited .

Q: Which industries is David most experienced in?

David is most experienced in industries like Energy , Information Technology (IT) , and Agriculture .

Q: Which business areas is David most experienced in?

David is most experienced in business areas like Information Technology (IT) , Business Intelligence , and Project Management . David also has some experience in Research and Development (R&D) and Quality Assurance (QA) .

Q: What is David's education?

David holds a Master in Multiphase Systems from Technical University of Munich / Politecnico di Torino / École des Mines de Saint Étienne and a Bachelor in Chemical Engineering from Obafemi Awolowo University .

Q: Does David have any certificates?

David has 7 certificates . Among them, these include: ALX Data Science , DataCamp Data Analyst Professional , and DataCamp Data Engineer Associate .

Recommended expert

Munich, Germany

Experience

Jan 2025 - Jun 2025

6 months

AI Trainer (NLP & LLM Evaluation)

Freelance

Designed and evaluated high-quality prompts and completions for Large Language Models (LLMs), focusing on improving response accuracy, instruction-following behavior, and factual consistency.
Annotated and rated LLM-generated outputs for grammar, coherence, relevance, and truthfulness.
Developed RLHF-style preference data by ranking model completions to inform reinforcement learning fine-tuning cycles.
Participated in prompt engineering experiments to assess the effect of instruction format, verbosity, and phrasing on model behavior.
Conducted error analysis and quality assurance on large-scale NLP datasets, identifying edge cases and linguistic ambiguity affecting LLM performance.

May 2024 - Sep 2024

5 months

Lagos, Nigeria

Senior Data Scientist

Babban Gona

Led the Data Analytics team of 12 analysts to deliver actionable insights for decision-making by the management team.
Designed and implemented scalable data systems to handle increasing data size and velocity, ensuring optimal system performance and efficiency.
Developed and automated ETL processes using BigQuery and introduced Power BI Dataflows to reduce data retrieval time and cut down average BI dashboard refresh time from 3 hours to under 20 minutes.
Supported the administration and maintenance of business intelligence applications, including user onboarding, software updates, and adherence to best practices in data governance.

May 2023 - Sep 2023

5 months

Hamilton, Canada

Machine Learning Researcher

Hamoye AI Labs

Tuned and optimised the performance of TensorFlow models with Katib AutoML.
Collaborated with the Data Science team to design, develop, and implement ML algorithms, contributing to the enhancement of predictive models.
Designed and evaluated prompts for machine learning models, defining comprehensive accuracy metrics which significantly enhanced predictive performance.

Feb 2023 - May 2024

1 year 4 months

Lagos, Nigeria

Data Analyst

Future Oilfield Services Limited

Developed and implemented automated data migration pipelines from existing company sheets to the ERP system for efficient handover from planning to operation phases.
Developed a data collection system to enable seamless data loading into the CRM platform and incorporated best practices into data entry procedures for all business units.
Trained the company’s business heads on auditing data for their respective business units, thereby ensuring good data quality.
Monitored progress of various Well Services projects, identifying potential risks and implementing mitigation strategies.

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Energy (1.5 years), Information Technology (1 year), and Agriculture (0.5 years).

Energy

Information Technology

Agriculture

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Information Technology (1.5 years), Business Intelligence (1.5 years), Project Management (1.5 years), Research and Development (1 year), and Quality Assurance (0.5 years).

Information Technology

Business Intelligence

Project Management

Research and Development

Quality Assurance

Summary

Data Scientist and a current master’s student in Multiphase Systems, specializing in energy systems, advanced simulations, and multiphase reactor design. Experienced in process control, computational fluid dynamics and applied machine learning, with prior industry experience as a Chemical Engineer and Data Expert.

Skills

Simulation & Modeling: Ansys Fluent, Openfoam, Polysun
Programming & Data: Python, Sql, Fortran, Matlab, C++
Tools & Platforms: Ms Office Suite, Power Bi, Bigquery, Linux

Languages

English

Native

French

Intermediate

German

Elementary

Education

Sep 2024 - Oct 2026

Technical University of Munich / Politecnico di Torino / École des Mines de Saint Étienne

Erasmus Mundus Joint Masters · Multiphase Systems · Munich, Germany

Aug 2016 - Feb 2022

Obafemi Awolowo University

Bachelor of Science · Chemical Engineering · Nigeria · 4.27/5.00

Certifications & licenses

ALX Data Science

DataCamp Data Analyst Professional

DataCamp Data Engineer Associate

DataCamp Data Scientist Professional

Microsoft Certified: Fabric Analytics Associate

Microsoft Certified: Power BI Data Analyst Associate

Oracle Cloud Infrastructure Foundations Associate

Profile

Created

October 2025

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is David based?

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

What languages does David speak?

David speaks the following languages: English (Native), French (Intermediate), German (Elementary).

How many years of experience does David have?

David has at least 2 years of experience. During this time, David has worked in at least 4 different roles and for 4 different companies. The average length of individual experience is 1 year and 6 months. Note that David may not have shared all experience and actually has more experience.

What roles would David be best suited for?

Based on recent experience, David would be well-suited for roles such as: AI Trainer (NLP & LLM Evaluation), Senior Data Scientist, Machine Learning Researcher.

What is David's latest experience?

David's most recent position is AI Trainer (NLP & LLM Evaluation) at Freelance.

What companies has David worked for in recent years?

In recent years, David has worked for Freelance, Babban Gona, Hamoye AI Labs, and Future Oilfield Services Limited.

Which industries is David most experienced in?

David is most experienced in industries like Energy, Information Technology (IT), and Agriculture.

Which business areas is David most experienced in?

David is most experienced in business areas like Information Technology (IT), Business Intelligence, and Project Management. David also has some experience in Research and Development (R&D) and Quality Assurance (QA).

What is David's education?

David holds a Master in Multiphase Systems from Technical University of Munich / Politecnico di Torino / École des Mines de Saint Étienne and a Bachelor in Chemical Engineering from Obafemi Awolowo University.

Does David have any certificates?

David has 7 certificates. Among them, these include: ALX Data Science, DataCamp Data Analyst Professional, and DataCamp Data Engineer Associate.

What is the availability of David?

David is immediately available part-time for suitable projects.

What is the rate of David?

David's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.