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Solennel GISUBIZO NGABOSN
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Solennel GISUBIZO NGABO

@solennelgisubizongab

Backend-focused software engineer at Irembo building LLM chatbots and multilingual support agents for public services.

Rwanda
Message

At Irembo, I designed and implemented an LLM chatbot using vector embeddings, and developed web applications with Java backend services and Angular. I also contributed to the MSD project to deliver 100 services within 6 months.

At Pomme-Health, I architected and built the backend system, including scalable RESTful APIs and database schemas. I also led backend–frontend integration and managed deployment and CI/CD pipelines.

At Carnegie Mellon University - Africa, I built J.A.M.B.O., an AI-powered English and French WhatsApp support agent for JA Africa using RAG over curated knowledge bases. I led bilingual testing and evaluation and authored client-facing technical documentation.

Experience

Work history, roles, and key accomplishments

PO

Senior Full-Stack Software Engineer

Pomme-Health

Nov 2024 - Jan 2026 (1 year 2 months)

Architected and built the backend system, designing scalable RESTful APIs and database schemas. Led backend-frontend integration, implemented secure authentication, and managed production infrastructure with CI/CD pipelines.

CA

Graduate Teaching Assistant

CMU Africa

Sep 2025 - Dec 2025 (3 months)

Assisted in creating and reviewing quizzes, homework, and exams for a machine learning course. Supported students through office hours and recitations, and graded assignments with feedback.

IR

Software Engineering Consultancy

Irembo

Mar 2024 - Nov 2024 (8 months)

Designed and implemented a chatbot using LLMs and vector embeddings, and integrated data analytics tools like Metabase. Developed web applications with Java and Angular, contributing to the MSD project to deliver 100 services within 6 months.

SE

Full Stack Developer (Backend heavy)

SevenX

May 2023 - Mar 2024 (10 months)

Developed and maintained backend systems for web applications including a hospital management website and office management tool. Utilized Next.js, ORMs like Prisma and Drizzle, and cloud services like Supabase and Hasura, with Docker for containerization and CI/CD integration.

AP

Engineering Apprentice

Andela Technical Leadership Program

Oct 2022 - Aug 2023 (10 months)

Developed backend functionalities using Node.js and acquired proficiency in React.js. Contributed to an e-commerce website with shopping cart, checkout, order tracking, and notifications, and wrote tests using Jest.

Education

Degrees, certifications, and relevant coursework

Carnegie Mellon University - Africa logoCA

Carnegie Mellon University - Africa

Master's in Information Technology, Information Technology

2024 -

Activities and societies: Built J.A.M.B.O., an AI-powered multilingual WhatsApp support agent; developed a movie recommendation API with Kafka; implemented model evaluation and CI pipelines.

Pursuing a Master's in Information Technology with a concentration in Applied Machine Learning and AI, expected to graduate in May 2026.

AA

Adventist University of Central Africa

Bachelor of Arts, Software Engineering

2019 - 2024

Earned a Bachelor of Arts in Software Engineering.

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