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Benjamin Efenudu

Benjamin Efenudu

Senior full-stack engineer with 8+ years in tech. React, Next.js, TypeScript, Node.js and .NET; AI products on Claude and OpenAI with RAG, tool calling and human review; fintech dashboards for a central bank and 450+ institutions.

Nigeriabenjaminefenudu@gmail.comGitHubLinkedIn

Skills

AI and LLM engineering
Claude (Anthropic API), OpenAI API, Retrieval-augmented generation (RAG), Embeddings (Voyage), Agentic tool calling within role permissions, Prompt design, LLM output evaluation (accuracy, hallucination, bias), Human-in-the-loop review, PII guardrails, AI coding agents (Claude Code, Codex, Cursor)
Frontend
TypeScript, React, Next.js (App Router), Redux and React Query, Tailwind CSS, Progressive web apps, WebSockets and real-time UIs, Design systems and component libraries, Vite
Backend and data
Node.js and NestJS, C# and ASP.NET Core, REST APIs and microservices, PostgreSQL and row-level security, Prisma, MongoDB, Stripe and Paystack, Solana and Ethereum (Web3)
Cloud, DevOps and quality
Docker and Kubernetes, AWS (S3, CloudFront, Elastic Beanstalk, SES), Cloudflare, Vercel, CI/CD (TeamCity, GitHub Actions, AWS CodePipeline), Turborepo monorepos, Vitest, Playwright and Cypress, Sentry
Leadership
Technical leadership, Product and technical roadmaps, Code review, Mentoring and teaching, Agile delivery, Technical writing

Experience

  1. AI Product Engineer, full-stack, built end to end

    SchoolWithEaseMar 2025 — Present

    A multi-tenant SaaS platform that runs a whole school — admissions, attendance, lessons, results, fees and parents — built end to end, with AI features designed around review: nothing an AI writes reaches a pupil until a teacher and a head of department have approved it.

    • Draft with AI writes a full lesson note in the Nigerian lesson-note format in about thirty seconds; outputs are checked across subjects and class levels (Nursery to SS 3) for accuracy, curriculum fit and formatting.
    • An AI Assistant that answers from the school's own records through tool calls, only within what the user's role may see, and a Study Tutor that answers only from teacher-approved lessons.
    • No pupil's personal details are ever sent to the model; tenant isolation is enforced by Postgres row-level security across 23 tables, checked in CI.
    • Claude (Anthropic API)
    • Voyage embeddings
    • Next.js
    • NestJS
    • TypeScript
    • Prisma
    • PostgreSQL RLS
    • Turborepo
    • Playwright

  2. Backend Engineer, AI EdTech (contract)

    Global Asset UniversitySep 2023 — Dec 2023

    Built the entire backend of an online university, including a context-aware OpenAI chatbot that reads teacher-uploaded materials and answers student questions grounded in the course content.

    • Ethereum-based certificates, secure video on S3 and CloudFront, and Stripe subscriptions.
    • NestJS
    • TypeScript
    • MongoDB
    • OpenAI
    • AWS
    • Stripe

  3. Senior Software Engineer

    Zone Payment Network (formerly AppZone Group)Jun 2022 — Aug 2026

    Owner of Zone's Admin and Client Dashboards — the interfaces the Central Bank of Nigeria, 18+ commercial banks and 450+ microfinance institutions across seven African countries use to run a regulated blockchain payment network — and of the ZonePay PWA and QR Router. Sole frontend engineer for nearly two years, building 80%+ of every dashboard version.

    • Designed and implemented the dashboard frontend in React and TypeScript to visualise and manage real-time, high-throughput payment flows.
    • Worked within Zone's AI-native engineering workflow — LLM assistants (Cursor, Codex) drafting code, tests and documentation — and reviewed every AI output for correctness, security and compliance before it shipped in a regulated payments environment.
    • Featured in Zone's African Builder series as one of the company's MVPs and high performers.
    • React
    • TypeScript
    • Redux
    • React Query
    • Next.js
    • Docker
    • Kubernetes
    • Cloudflare
    • TeamCity

  4. Software Development Lead

    GoaLabs (formerly Tech4Dev startup)Oct 2021 — Feb 2022

    Led cross-functional teams building cloud-native solutions, deploying containerised microservices with Docker and Kubernetes.

    • Designed reusable UI component libraries and state-management architectures that cut development time and improved code quality.
    • React
    • Docker
    • Kubernetes

  5. Backend Development Lead

    DeltaJob-ng (formerly Delta State ICT-YEP)Jun 2021 — Sep 2021

    Supervised backend operations, refactoring legacy codebases to introduce automated testing and improve system stability.

    • Professionalised the engineering culture with structured GitHub workflows and automated deployments to Heroku.
    • Node.js
    • GitHub Actions
    • Heroku

  6. Software Development Lead

    AtEase InsuranceFeb 2021 — Jun 2022

    Directed end-to-end product delivery across frontend, backend and mobile tracks for an insurance startup, translating business goals into technical roadmaps.

    • Established CI/CD pipelines and Agile workflows while architecting scalable APIs and React interfaces.
    • React
    • Node.js
    • CI/CD

  7. ICT Manager · Senior Management

    Covenant Child AcademyApr 2018 — Apr 2021

    Ran technology for a school: designed and set up the computer labs and network, introduced digital systems for records, administration and payments, and moved classes, meetings and staff training online in March 2020 so the curriculum kept running through the COVID-19 lockdown.

    • Tutored Python for the CodeLagos initiative and ran basic programming and robotics classes for students.

  8. Content Writer, Software Development Team

    CareerLyftSep 2017 — Apr 2018

    Worked remotely in a team of writers, developers and designers building a SaaS résumé builder for job-seekers on mobile and desktop; by 2021 the product had 5K+ unique monthly visitors.

Education

  • B.Eng. (Hons) Petroleum Engineering, Second Class Upper

    Federal University of Petroleum Resources, Effurun, Nigeria

Certifications

  • Microsoft FullStack Development (React.js, C#/.NET), Microsoft / Tech4Dev
  • Advanced Backend Development (Node.js), Delta State ICT-YEP
  • Frontend Development (React JS), Side Hustle NG
  • Veracode Security Labs, Level 1, Veracode
  • Professional Secure Coding Training, SmartComply
  • Data Awareness Training, SmartComply

Teaching and community

  • Python Tutor, CodeLagos. Lagos State's school coding initiative, during the Covenant Child Academy role, 2018–2019
  • Frontend Tutor, Ideal IT Center, 2021
  • Backend Tutor (Intermediate Node.js), KodeCamp, 2022
  • Founder, Intelligent Investment Mindset Hub. Trained 500+ participants, 2019–2020

Awards

  • MVP and high performer, African Builder series, Zone Payment Network, 2024
  • Overall Best Trainee, Delta State ICT-YEP, 2021
  • Academic Excellence, top score nationwide, O3GP National Test, 2016