I’m a Full-Stack Software Engineer with 4+ years of experience building and maintaining scalable SaaS applications in production, delivering end-to-end features, and modernizing legacy systems. I work across Angular/TypeScript and Node.js/REST APIs, and I also engineer production-grade ML/LLM pipelines (including multimodal extraction with vector search and robust schema validation). I’m focused on quality through CI/CD, automated testing, and analytics-driven product improvements.

ONESI UMOIZE

I’m a Full-Stack Software Engineer with 4+ years of experience building and maintaining scalable SaaS applications in production, delivering end-to-end features, and modernizing legacy systems. I work across Angular/TypeScript and Node.js/REST APIs, and I also engineer production-grade ML/LLM pipelines (including multimodal extraction with vector search and robust schema validation). I’m focused on quality through CI/CD, automated testing, and analytics-driven product improvements.

Available to hire

I’m a Full-Stack Software Engineer with 4+ years of experience building and maintaining scalable SaaS applications in production, delivering end-to-end features, and modernizing legacy systems.

I work across Angular/TypeScript and Node.js/REST APIs, and I also engineer production-grade ML/LLM pipelines (including multimodal extraction with vector search and robust schema validation). I’m focused on quality through CI/CD, automated testing, and analytics-driven product improvements.

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Experience Level

Expert
Expert
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Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
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Language

Work Experience

Full-Stack Software Engineer at Renaissance Learning (EdTech SaaS)
July 1, 2023 - Present
Designed, developed, and maintained full-stack features using Angular, TypeScript, and Node.js with REST APIs in a large-scale SaaS environment. Implemented in-product analytics using Pendo by instrumenting the frontend and integrating with backend data pipelines for product reporting. Led UI modernization using Tailwind CSS to improve performance, accessibility, and maintainability across repositories. Built and maintained CI/CD pipelines in Azure Pipelines with automated smoke tests and release validation. Integrated frontend components with backend services for pagination, sorting, filtering, and validation, collaborating on API contracts and error handling. Engineered a resilient, multi-backend LLM pipeline for multimodal NLP extraction (text + vision) using sentence-transformer embeddings, FAISS vector search, and re-ranking, achieving 50%+ high-confidence alignment accuracy across 1,000+ items. Optimized LLM inference costs/latency using constrained outputs, structured JSON sche
Full-Stack Software Engineer at Renaissance Learning
July 1, 2023 - Present
Designed, developed, and maintained full-stack features using Angular, TypeScript, Node.js, and REST APIs in a large-scale SaaS environment. Implemented in-product analytics using Pendo to support product analytics and reporting. Led UI modernization using Tailwind CSS for performance, accessibility, and maintainability across repositories. Built and maintained CI/CD pipelines in Azure Pipelines with automated smoke tests and release validation. Integrated frontend components with backend services supporting server-side pagination, sorting, and validation. Collaborated with backend engineers to define API contracts, improve error handling, and optimize data flow. Conducted code reviews, mentored junior engineers, and championed best practices. Worked in Agile/Scrum teams.
Junior Full-Stack Developer at Northcoders / Renaissance Learning Partnership
October 1, 2022 - July 1, 2023
Built full-stack applications using React, Node.js, Express, MongoDB, and Firebase. Developed and consumed RESTful APIs, including authentication, validation, and CRUD operations. Designed database schemas and queries using MongoDB and SQL. Applied Test-Driven Development (TDD) with Jest across frontend and backend components. Used Git workflows, pull requests, and code reviews in an Agile team environment. Secured a permanent Full-Stack Software Engineer role upon program completion.

Education

MSc Computing (Distinction) at University of Sunderland, UK
January 1, 2021 - January 1, 2022
BSc Electrical & Electronic Engineering at University of Lagos, Nigeria
January 1, 2011 - January 1, 2017
MSc Computing (Distinction) at University of Sunderland
January 1, 2021 - January 1, 2022
BSc Electrical & Electronic Engineering at University of Lagos
January 1, 2011 - January 1, 2017

Qualifications

Northcoders Software Development Bootcamp
January 1, 2022 - January 1, 2023
Microsoft Azure Fundamentals (AZ - 900)
January 11, 2030 - June 16, 2026
Microsoft Azure Fundamentals (AZ-900)
January 11, 2030 - August 21, 2026
Northcoders Software Development Bootcamp
January 1, 2022 - January 1, 2023

Industry Experience

Software & Internet, Education