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J
Johnson Omotunde

Johnson Omotunde

AI Software Engineer – Machine Learning

Nigeria flagRemote, Nigeria
$24.00/hrIntermediateMicro1MercorMindrift

Key Skills

Software

Micro1
MercorMercor
MindriftMindrift
OneFormaOneForma
LabelboxLabelbox
HumanaticHumanatic
Mighty AIMighty AI
ProdigyProdigy
Redbrick AIRedbrick AI
RemotasksRemotasks
RoboflowRoboflow
SamaSama
V7 LabsV7 Labs
Trilldata Technologies
VoTT
TelusTelus
TolokaToloka
TagtogTagtog
Surge AISurge AI
SuperAnnotateSuperAnnotate
Snorkel AISnorkel AI
SlothSloth
Scale AIScale AI
SuperviselySupervisely
PlaymentPlayment
OpenCV AI Kit (OAK)OpenCV AI Kit (OAK)
Anno-MageAnno-Mage
ArgillaArgilla
AppenAppen
Axiom AI
ClickworkerClickworker
CloudFactoryCloudFactory
CrowdFlowerCrowdFlower
CrowdSourceCrowdSource
Data Annotation TechData Annotation Tech
DatatroniqDatatroniq
DataloopDataloop
DatumboxDatumbox
EncordEncord
Google Cloud Vertex AIGoogle Cloud Vertex AI
HastyHasty
HiveMindHiveMind

Top Subject Matter

LLM and agent training data for scheduling
Email Domain Expertise
Maps Domain Expertise

Top Data Types

TextText
Computer Code ProgrammingComputer Code Programming
VideoVideo

Top Task Types

Prompt + Response Writing (SFT)Prompt + Response Writing (SFT)
ClassificationClassification
Function CallingFunction Calling
Bounding BoxBounding Box
Object DetectionObject Detection
Text GenerationText Generation
Text SummarizationText Summarization
RLHFRLHF
Fine-tuningFine-tuning
TranscriptionTranscription
Computer Programming/CodingComputer Programming/Coding
PolygonPolygon
SegmentationSegmentation
Entity (NER) ClassificationEntity (NER) Classification
PolylinePolyline
Point/Key PointPoint/Key Point
CuboidCuboid
Question AnsweringQuestion Answering
Red TeamingRed Teaming
Evaluation/RatingEvaluation/Rating
Data CollectionData Collection

Freelancer Overview

AI Software Engineer – Morningtrain. Brings 8+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Internal and Proprietary Tooling. Education includes Bachelor of Science, Obafemi Awolowo University (2023) and Senior Secondary Certificate Examination, Libration Academy (2014). AI-training focus includes data types such as Text and labeling workflows including Prompt + Response Writing (SFT) and Classification.

IntermediateEnglishFrenchGerman

Labeling Experience

AI Software Engineer – Morningtrain

TextPrompt Response Writing SFT
Designed and generated over 1,200 multi-turn conversations for training large language model (LLM) agents. Created evaluation datasets and engineered dialogue flows using structured JSON schemas to benchmark reasoning and improve dataset diversity. Refined annotation playbooks to improve dataset acceptance rate and reduce invalid formatting in internal QA reviews. • Simulated user and assistant dialogues across 6–12 conversational turns • Developed function-calling scenarios for tool use and task automation • Focused on realistic intent, context tracking, and edge case coverage • Enhanced internal QA through iterative review and scenario refinement

Designed and generated over 1,200 multi-turn conversations for training large language model (LLM) agents. Created evaluation datasets and engineered dialogue flows using structured JSON schemas to benchmark reasoning and improve dataset diversity. Refined annotation playbooks to improve dataset acceptance rate and reduce invalid formatting in internal QA reviews. • Simulated user and assistant dialogues across 6–12 conversational turns • Developed function-calling scenarios for tool use and task automation • Focused on realistic intent, context tracking, and edge case coverage • Enhanced internal QA through iterative review and scenario refinement

2024 - 2026

LLM Data Trainer – Yorubatrainers

TextPrompt Response Writing SFT
Produced over 900 annotated samples for instruction-following LLMs centering on tool usage and conversational reasoning. Simulated dual-role interactions to generate structured output datasets for AC-style tasks. Developed scenario templates to enhance dataset consistency and ambiguity resolution. • Identified and corrected over 250 instances of model hallucinations • Designed multi-intent and edge-case user queries for robust evaluation • Improved dataset consistency from 78% to 91% by internal metrics • Created high-fidelity data for instruction tuning and reasoning analysis

Produced over 900 annotated samples for instruction-following LLMs centering on tool usage and conversational reasoning. Simulated dual-role interactions to generate structured output datasets for AC-style tasks. Developed scenario templates to enhance dataset consistency and ambiguity resolution. • Identified and corrected over 250 instances of model hallucinations • Designed multi-intent and edge-case user queries for robust evaluation • Improved dataset consistency from 78% to 91% by internal metrics • Created high-fidelity data for instruction tuning and reasoning analysis

2023 - 2024

Data Engineer – Structured Dataset Development (AI Focus) – Tech Contractor

TextClassification
Developed and labeled more than 2,000 structured datasets for NLP and conversational AI model training. Standardized text data pipelines for annotation and validation across multi-source inputs. Prepared evaluation-ready datasets for supervised learning and reduced annotation errors through quality improvement. • Enhanced data consistency and processing efficiency by 40% • Supported large-scale cleaning and validation initiatives • Provided datasets for model training and performance review • Implemented advanced validation and quality control protocols

Developed and labeled more than 2,000 structured datasets for NLP and conversational AI model training. Standardized text data pipelines for annotation and validation across multi-source inputs. Prepared evaluation-ready datasets for supervised learning and reduced annotation errors through quality improvement. • Enhanced data consistency and processing efficiency by 40% • Supported large-scale cleaning and validation initiatives • Provided datasets for model training and performance review • Implemented advanced validation and quality control protocols

2020 - 2021

Education

O

Obafemi Awolowo University

Bachelor of Science, Psychology

Bachelor of Science
2017 - 2023
L

Libration Academy

Senior Secondary Certificate Examination, General Secondary Education

Senior Secondary Certificate Examination
2008 - 2014

Work History

M

Morningtrain

AI Software Engineer

Remote
2024 - Present
A

ALX Africa

AI Systems & API Integration Developer

Nigeria
2022 - 2023