Available to hire
Hi, I’m Joshua Francis Lagos. I’m a Web Developer from Lagos, Nigeria who also works with data annotation to support machine learning projects. I build responsive websites, design user-centered interfaces, and help create high-quality labeled datasets for ML training.
I combine strong frontend skills (HTML, CSS, JavaScript, React, WordPress) with hands-on experience in AI data workflows, dataset labeling, QA, and data validation to translate business needs into reliable digital products and ML-ready data pipelines.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Language
English
Fluent
Work Experience
Data Annotator at Confidential
March 20, 2025 - PresentAchieved 99% annotation accuracy across complex annotation tasks including text classification, reasoning evaluation, and prompt analysis. Annotated training datasets used for ML models supporting 95%+ precision. Evaluated prompts and responses to identify ambiguity, edge cases, and model failure patterns. Conducted data set quality checks and validation processes to ensure consistency and compliance with annotation guidelines. Assisted with QA audits to identify annotation inconsistencies and improve labeling workflows. Improved annotation throughput by 15% by recommending workflow improvements and annotation guideline clarifications. Maintained strict adherence to data privacy and safety policies and annotation standards.
Confidential Data Annotator
March 1, 2025 - PresentAchieved 99% annotation accuracy across complex annotation tasks involving text classification, reasoning evaluation, and prompt analysis. Annotated training datasets for ML models supporting 95%+ precision. Evaluated prompts and responses to identify ambiguity, edge cases, and model failure patterns. Conducted data quality checks and validation processes to ensure consistency and compliance with annotation guidelines. Assisted with QA audits to identify annotation inconsistencies and improve labeling workflows. Improved annotation throughput by 15% by recommending workflow improvements and annotation guideline clarifications. Maintained strict adherence to data privacy, safety policies, and annotation standards.
Web Developer at Joie Carson Global Ventures
August 1, 2022 - PresentBuilt responsive web applications using HTML, CSS, JavaScript, and React with cross-browser compatibility and mobile-first performance. Developed and deployed WordPress websites with custom themes and plugins for scalable content management. Implemented front-end UI/UX performance optimizations (asset compression, layout improvements, faster page loads) to improve engagement. Designed interactive UI prototypes and design systems in Figma to enhance collaboration between stakeholders and developers. Created digital brand assets including website graphics, landing pages, and email templates aligned with marketing strategies. Collaborated with clients to translate business requirements into technical solutions and digital products.
Web Developer at Joie Jason Global Ventures
August 1, 2022 - PresentDesigned and launched over responsive websites and landing pages using HTML and CSS3, leading to a 35% increase in user engagement and lead conversions. Created high-impact visual assets, including banners, social media graphics, and email templates, enhancing brand consistency and increasing social media engagement. Prototyped and iterated UI/UX in Figma, collaborating closely with developers and stakeholders to ensure user-centric, accessible, and mobile-optimized designs. Streamlined creative workflows by developing reusable design components and brand guidelines, increasing turnaround time and consistency across digital touchpoints.
Customer Service Representative at Codex Logistics and Services
April 1, 2022 - September 15, 2025Reduced operational inefficiencies by implementing streamlined administrative processes, resulting in a 20% increase in productivity across departments. Increased team performance by 25% through effective task allocation, performance evaluations, and compliance training, ensuring alignment with organizational goals. Improved financial transparency by maintaining accurate records, managing receivables/payables, and delivering timely, insightful reviews. Strengthened vendor and stakeholder relations, negotiating favorable terms that contributed to a 10% cost reduction in service procurement.
Education
Bachelor of Science in Computer Science at Global Wealth University
January 1, 2022 - January 1, 2025Qualifications
Quality Assurance and Quality Control
January 1, 2024 - April 24, 2026Human Resources Management
January 1, 2024 - June 19, 2026Industry Experience
Media & Entertainment, Software & Internet, Professional Services, Education
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