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Osas Obaseki

AI Software Engineer

I build AI-powered products with LLMs, Python and TypeScript

Lagos, Nigeria, Nigeria

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Osas Obaseki

About

Software engineer with 6 years' experience shipping web and AI products. I design retrieval-augmented assistants, build reliable APIs and turn machine-learning prototypes into production features used by thousands of people.

Full-stack engineer specialising in applied AI: LLM integration, RAG pipelines, evaluation and MLOps on cloud platforms.

Mission

Make AI useful, safe and affordable for African businesses.

Values

Ownership, clarity, user safety

Specialisations

LLM applications, RAG, prompt evaluation, TypeScript/React, Python/FastAPI

Experience

  1. Senior AI Software Engineer

    Kora Fintech · Lagos (Hybrid)

    Mar 2023 – Present

    Lead development of an AI customer-support assistant and document-understanding services.

    Achievements

    Built a RAG assistant that resolves 42% of support chats without escalation. Cut LLM costs by 35% with caching and model routing.

    Outcomes

    Support response time fell from 4 hours to 3 minutes.

  2. Software Engineer

    Andela · Remote

    Jan 2020 – Feb 2023

    Built React and Node.js features for US clients; owned CI/CD pipelines.

    Achievements

    Delivered a recommendations service in Python that lifted engagement by 18%.

  3. Junior Developer

    Hotels.ng · Lagos

    Jun 2018 – Dec 2019

    Maintained booking APIs and admin dashboards.

Projects

  • Naija Docs AI

    Creator & lead engineer · Jan 2024 – Jun 2024

    Open-source assistant that answers questions about Nigerian tax and business-registration documents with cited sources.

    Outcomes

    1,200+ GitHub stars; used by 3 accounting firms.

    Python, FastAPI, pgvector, React

  • Fraud-signal scoring API

    Backend engineer · Jun 2023 – Nov 2023

    Real-time API combining rules and a gradient-boosted model to flag suspicious card transactions.

    Outcomes

    Reduced chargebacks by 22%.

    Python, XGBoost, Redis, Docker

Skills

Technical

PythonTypeScriptReactNode.jsFastAPIPostgreSQLLLM integrationRAGVector search

Competencies

System designPrompt engineeringModel evaluationAPI design

Tools & technologies

OpenAI APILangChainDockerAWSGitHub Actionspgvector

Soft skills

MentoringCommunicationProblem solving

Industries

FintechTravelSaaS

Education

  • BSc, Computer Science

    University of Lagos

    Sep 2013 – Jul 2017

Certifications & awards

  • Certification

    AWS Certified Machine Learning – Specialty

    Amazon Web Services · May 2024 · Valid to May 2027

  • Certification

    Deep Learning Specialization

    DeepLearning.AI · Aug 2022

Contact

Preferred contact: email