Ndubuisi Samuel

Full-Stack & Blockchain Engineer

LinkedIn

About

Highly accomplished Full-Stack Engineer and Smart Contract Developer with over 6 years of experience, specializing in building robust decentralized solutions and integrating blockchain technologies. Proven ability to design, develop, and deploy secure smart contracts and scalable backend systems, driving enhanced user experience and operational efficiency. Adept at leading cross-functional collaborations to deliver high-impact, innovative software solutions across diverse industries, from fintech to agro-investment.

Work Experience

Blockchain Engineer

Nestcoin

Dec 2021 - Aug 2025

Road Town, Tortola, VG

Led the design, development, and integration of secure Solidity smart contracts and scalable backend systems for decentralized applications, ensuring high performance and reliability.

  • Designed and implemented secure and efficient Solidity smart contracts for escrow and swap systems, enhancing transaction security and processing capabilities.
  • Conducted comprehensive testing and debugging of smart contracts, achieving 99% reliability and security for deployed blockchain solutions.
  • Developed and maintained robust backend endpoints, facilitating seamless interaction with deployed smart contracts and supporting over 10,000 daily transactions.
  • Integrated smart contracts with frontend dApps, optimizing user experience and functionality by 25% through intuitive interfaces for blockchain features.
  • Collaborated cross-functionally with frontend developers and product teams, ensuring timely delivery of user-centric blockchain features and continuous system improvements.

Software Engineer (Blockchain Resource - Enterprise Solutions Engineering)

Sterling Bank Plc

Jun 2020 - Jan 2022

Lagos, Lagos State, NG

Engineered blockchain-based enterprise solutions, focusing on tokenization and seamless integration to enhance transparency and security for investment platforms.

  • Developed smart contracts to tokenize over $500K in investment values, converting them into digital tokens for an agro-investment project and ensuring transparent ownership.
  • Implemented robust tokenization mechanisms, facilitating fair distribution and accurate tracking of investment shares across the platform.
  • Integrated blockchain technology into the existing agro-investment platform, improving data transparency, security, and immutability for over 10,000 users.
  • Provided critical technical support for blockchain solutions to multiple internal teams, reducing issue resolution time by 30% and maintaining operational continuity.
  • Collaborated with engineers, developers, and business analysts to design and implement cutting-edge blockchain-based solutions, enhancing the bank's digital offerings.

Senior Software Engineer - Payments

Compliance Professionals Plc

Feb 2021 - Oct 2021

Jos, Plateau State, NG

Spearheaded the development and integration of payment channels, enhancing revenue collection processes and user experience for government agencies.

  • Spearheaded payment channel integration (backend/frontend) for revenue collection across multiple MDAs, processing over 100,000 seamless transactions monthly.
  • Enhanced user experience for the revenue collection platform by optimizing payment workflows and integrating new channels, leading to a 20% increase in user adoption.
  • Collaborated with cross-functional teams to deliver scalable solutions, automating revenue collection processes and reducing manual effort by 40%.
  • Contributed to the development of the Revenue Collection Platform (PSIRS), improving system efficiency and data accuracy for financial reporting.

Blockchain Developer

Jelurida Africa

Nov 2019 - Jun 2020

Lagos, Lagos State, NG

Contributed to blockchain use-case research and development, implementing critical frontend and backend features for decentralized applications.

  • Engaged in blockchain use-case research and development, contributing to the successful prototyping of new decentralized applications.
  • Implemented key frontend and backend features, improving website performance by 15% and enhancing overall user interaction.
  • Participated in rigorous code reviews, ensuring high code quality and security standards for blockchain projects.
  • Collaborated effectively with cross-functional engineering teams, contributing to the timely delivery of project milestones and features.

IT Consultant

Neo Entertainment & Fun World Limited

Jan 2018 - Oct 2019

Port Harcourt, Rivers State, NG

Managed IT infrastructure and developed automated systems, enhancing operational efficiency and user engagement for entertainment platforms.

  • Implemented an automated contest result management portal with integrated payment gateway, streamlining processes and handling over 5,000 entries per event.
  • Managed comprehensive website improvements and hosting, achieving 99.9% uptime and enhancing user experience.
  • Collaborated with various teams to integrate technology solutions into business operations, improving task execution efficiency by 20%.
  • Provided technical expertise for system optimization and new feature deployment, directly supporting business growth initiatives.

Technical Lead

Crypstone Global Resources Limited

Jan 2017 - Mar 2019

Lagos, Lagos State, NG

Led technical projects and teams, overseeing development and implementation of software solutions, and ensuring adherence to best practices and project timelines.

  • Led a technical team of 3 developers, guiding the successful delivery of multiple software projects within aggressive timelines.
  • Oversaw the full software development lifecycle from conception to deployment, ensuring adherence to best coding practices and quality standards.
  • Implemented new development methodologies, reducing project delivery time by 15% and improving team efficiency.
  • Provided technical mentorship and guidance to junior developers, fostering skill development and enhancing team capabilities.

Education

Metallurgical & Materials Engineering

University of Nigeria, Nsukka

Sep 2009 - Jun 2014

Nsukka, Enugu State, NG

Courses

  • Engineering Fundamentals
  • Materials Science
  • Thermodynamics
  • Process Engineering

Certificates

Node.js: Microservices

Udemy

Jan 2022

The Complete Solidity Smart Contract Guide

Udemy

Sep 2021

Blockchain: Learning Solidity

LinkedIn Learning

Jul 2021

Learning TypeScript

LinkedIn Learning

May 2021

Publications

Resetting Vue Instance Data

Medium

Jan 2020

A technical article detailing methods and best practices for resetting Vue.js instance data, optimizing application state management.

Multiple Auth Scope For Different Roles - Laravel 5.8

Medium

Jun 2019

An article explaining how to implement multiple authentication scopes for different user roles in Laravel 5.8, enhancing security and access control.

Languages

English

Skills

Blockchain Development

  • Solidity
  • Smart Contracts
  • dApps
  • Tokenization
  • Blockchain Integration
  • Web3.js
  • Ethers.js

Backend Development

  • Node.js
  • Microservices
  • APIs
  • Scalable Architecture
  • Database Administration
  • Laravel
  • PHP
  • Python

Frontend Development

  • Web Development
  • JavaScript
  • TypeScript
  • Vue.js
  • React
  • HTML
  • CSS
  • UI/UX Integration

Payment Systems

  • Payment Gateways
  • Payment Channel Integration
  • Revenue Collection Systems

Software Engineering

  • Full-Stack Development
  • System Design
  • Code Review
  • Debugging
  • Testing
  • Agile Methodologies
  • Continuous Improvement

Technical Leadership & Support

  • Technical Leadership
  • Team Mentorship
  • Cross-functional Collaboration
  • Technical Support
  • Problem Solving