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V

Vincent Kirui

Software Test Engineer & QA Specialist

Kenya flagNairobi, Kenya
$50.00/hrExpertAppenClickworkerData Annotation Tech

Key Skills

Software

AppenAppen
ClickworkerClickworker
Data Annotation TechData Annotation Tech
Label StudioLabel Studio
MercorMercor
MindriftMindrift
SuperAnnotateSuperAnnotate
TelusTelus

Top Subject Matter

Finance – Risk Analysis & Fraud Detection
Software Development & AI Systems Testing
E-commerce – Product Categorization & Customer Support

Top Data Types

ImageImage
Computer Code ProgrammingComputer Code Programming
TextText

Top Task Types

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

Freelancer Overview

Software Test Engineer. Brings 5+ years of professional experience across complex professional workflows, research, and quality-focused execution. Education includes Bachelor of Science, Jomo Kenyatta University of Agriculture and Technology (2022).

ExpertEnglish

Labeling Experience

AI tester

DocumentText Generation
Tested and validated LLM-powered applications and AI coding systems through comprehensive quality assurance. Tasks included: (1) Writing test cases that validate AI model outputs across edge cases and complex scenarios, (2) Evaluating prompt effectiveness and refining prompts to generate accurate, contextual responses, (3) Identifying failure modes in AI systems and documenting gaps in model understanding, (4) Annotating and labeling AI responses for correctness, relevance, and safety compliance, (5) Testing chatbot interactions and conversational AI systems to ensure natural and helpful outputs. Worked across multiple projects testing LLMs, evaluating generated text quality, and ensuring AI applications meet production standards. Maintained high quality standards with attention to detail in identifying subtle errors and inconsistencies in AI behavior.

Tested and validated LLM-powered applications and AI coding systems through comprehensive quality assurance. Tasks included: (1) Writing test cases that validate AI model outputs across edge cases and complex scenarios, (2) Evaluating prompt effectiveness and refining prompts to generate accurate, contextual responses, (3) Identifying failure modes in AI systems and documenting gaps in model understanding, (4) Annotating and labeling AI responses for correctness, relevance, and safety compliance, (5) Testing chatbot interactions and conversational AI systems to ensure natural and helpful outputs. Worked across multiple projects testing LLMs, evaluating generated text quality, and ensuring AI applications meet production standards. Maintained high quality standards with attention to detail in identifying subtle errors and inconsistencies in AI behavior.

2025 - Present

Education

J

Jomo Kenyatta University of Agriculture and Technology

Bachelor of Science, Financial Engineering

Bachelor of Science
2017 - 2022

Work History

F

Flawless Workflow

Software Test Engineer

Nairobi
2024 - Present
F

Freelance

ERP System Developer

Nairobi
2023 - Present