Available for work

Hi, I'm

NNOROM
CHRISTIAN

Node.js • Python • Express.js • AWS • Docker • TypeScript • React • Next.js • MySQL • PostgreSQL • PyTorch • YOLOv8

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★★★★ 3+ Yrs Exp.

React

Next.js

TypeScript

Node.js

Python

Experience

3+ Yrs

★★★★

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Services

What I Do

Full-spectrum engineering — backend systems, polished frontends, cloud infrastructure, AI/ML pipelines, and mobile apps. From scoping to production with full ownership.

Backend Engineering

Production server-side systems — from API design and database architecture to observability and incident response.

Node.js / Express.js & Python (FastAPI, Django) services
REST API design, OpenAPI contracts, Microservices
MySQL & PostgreSQL schema design, query optimisation
Jest / Cypress integration & unit testing, TDD

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Frontend Engineering

Fast, accessible, pixel-perfect interfaces — built with modern frameworks and tested for production.

React & Next.js (App Router, SSR, SSG)
TypeScript, Tailwind CSS, component libraries
State management, API integration, performance optimisation
React Testing Library, Cypress end-to-end testing

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Cloud Engineering + AI/ML

End-to-end infrastructure and ML pipelines — from cloud deployment through model serving and monitoring.

AWS (EC2, S3, RDS, Lambda), Docker, Nginx, CI/CD
Computer vision with YOLOv8 (7-class vehicle detection)
PyTorch, TensorFlow, Scikit-learn model training
SHAP & LIME explainability, data drift detection, MLOps

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Web Development

Full-stack web solutions from concept to deployment — owning the entire product lifecycle.

End-to-end web applications (frontend + backend + database)
Authentication, payments, real-time features
SEO, accessibility, Core Web Vitals optimisation
Deployment pipelines, domain, hosting & monitoring

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Mobile Development

Cross-platform and native mobile apps — from architecture and build to App Store deployment.

Android native development with Kotlin & Jetpack Compose
React Native cross-platform applications
Flutter / Dart for iOS and Android
Push notifications, offline mode, App Store deployment

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Career

Work Experience

Feb 2026 — Present

CitiSense

London, United Kingdom

Urban intelligence platform for IoT sensor data, road defect detection, and ML-based vehicle analysis.

Full Stack & ML Engineer

Designed and built RESTful Express.js backend for a multi-view Automatic Traffic Counter (ATC) dashboard serving live IoT sensor data to highway teams.
Deployed to AWS EC2/S3/RDS; applied IAM policies and implemented CloudWatch monitoring with alerting for error spikes and latency thresholds.
Engineered a production YOLOv8 desktop ML app for automated vehicle detection across 7 classes; served via FastAPI backend containerised with Docker.
Built a Python ingestion pipeline for live LAQN/OpenAQ air quality feeds with validation, normalisation, and storage to AWS S3 and Postgres.

Next.js · Node.js · Express.js · Python · FastAPI · PostgreSQL · AWS · Docker · YOLOv8

Oct 2024 — Oct 2025

University of Essex

United Kingdom

AI, blockchain, and neurological data research projects.

Software & AI Engineer (Researcher)

Designed Voote — a full-stack blockchain voting system with identity verification, OCR, fraud detection, and Ethereum smart contract integration.
Trained ADHD prediction classification models (Logistic Regression, Random Forest, Neural Networks) on fMRI datasets reaching 80% accuracy; applied SHAP & LIME for GDPR-compliant explainability.
Developed Python backend APIs and AngularJS frontend for the Happy Again post-COVID neurological data visualisation platform.

Kotlin · Python · TensorFlow · PyTorch · SHAP · LIME · Solidity · Web3 · Firebase · AngularJS

Nov 2023 — Oct 2024

RedTech Limited

Fintech & Payment Solutions

Merchant acquisition and risk platform.

Software Developer

Built and maintained Node.js/Express backend services handling merchant onboarding logic, data validation, and integrations across 300+ external REST APIs.
Implemented Jest unit and integration tests across backend services, ensuring stability of onboarding pipelines handling thousands of daily transactions.
Developed monitoring dashboards and structured logging; investigated and resolved production incidents including API timeout failures.
Built data-driven React/Next.js frontends and played a senior sprint role: code review, API contract definition, and mentoring junior engineers.

Node.js · Express.js · Next.js · React · TypeScript · MySQL · PostgreSQL · AWS · Jest · CI/CD

Oct 2023 — Nov 2023

Tony Elumelu Foundation

Lagos, Nigeria

Pan-African entrepreneurship programme.

Program Operations & Data Analyst

Built an internal data retrieval and filtering system enabling fast access to 5,000+ candidate records from unstructured datasets.
Focused on validation, accuracy, and usability — directly supporting decision-making teams during candidate evaluation.

Python · Data Analysis · Internal Tooling

Why Choose Me

Backend depth.
AI breadth.

Backend-focused software engineer who ships production systems end-to-end — from API design and database architecture through cloud deployment, observability, and ML pipelines. I drive projects from scoping to production with full ownership in fast-paced, lean teams.

Years Pro Exp.

300+

APIs Integrated

80%

ML Accuracy

Node.jsExpress.jsPythonFastAPIAWS (EC2/S3/RDS)DockerGitHub ActionsMySQLPostgreSQLMongoDBReactNext.jsTypeScriptPyTorchYOLOv8TensorFlowJestTDDSolidity / Web3

Let's Build Together

Portfolio

Featured Work

View All on GitHub

Web3BlockchainAndroid

Voote

Blockchain Voting System

Kotlin · Jetpack Compose · React · Solidity · Web3 · Firebase · Microservices

Full-stack blockchain voting platform with identity verification, OCR, fraud detection, and Ethereum smart contract integration — focused on data integrity, auditability, and end-to-end security.

View on GitHub

ML/AIComputer VisionDesktop

Automatic Vehicle Annotator

Production YOLOv8 ML Application

Python · YOLOv8 · FastAPI · Electron · Docker · Digital Ocean · AWS

Production desktop ML application for automated vehicle detection using YOLOv8 trained across 7 object classes (Cars, Motorcycles, Pedal Cycles, LGVs, HGVs, PSVs, Pedestrians) — shipped with FastAPI inference backend and Docker deployment.

View on GitHub

FintechAPIBackend

Merchant Onboarding Platform

Risk Tooling & REST API Integrations

Node.js · Express.js · Python · MySQL · AWS (EC2/S3) · Jest · CI/CD

Risk assessment tooling with integrations across 300+ external REST APIs, Jest unit and integration test coverage, monitoring dashboards, and structured logging — processing thousands of daily merchant transactions.

View on GitHub

ML ResearchAIData Science

ADHD Prediction Pipeline

fMRI Classification with Explainability

Python · TensorFlow · Scikit-learn · SHAP · LIME · Pandas · NumPy

Classification models (Logistic Regression, Random Forest, Neural Networks) trained on fMRI and socio-emotional datasets reaching 80% accuracy — with SHAP & LIME explainability for GDPR-compliant transparency and automated data drift detection.

View on GitHub

Kotlin · Jetpack Compose · React · Solidity · Web3 · Firebase · Microservices

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