CEO & Founder @ NiGaTs IT Systems

Chrispus Gatia
Mwangi

Full-Stack Software Engineer & IT Specialist passionate about building intelligent, scalable systems and solving complex technical challenges.

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Full-Stack Developer
IT Specialist
Chrispus Gatia Mwangi — Full-Stack Developer and IT Specialist

About Me

What I do and what I'm passionate about

LEADERSHIP

CEO & Founder

NiGaTs IT Systems

Leading innovation in technology solutions. Specialized in full-stack development, AI training, and building scalable enterprise systems. Dedicated to transforming businesses through cutting-edge technology and strategic IT infrastructure.

Full-Stack Development

End-to-end web applications with React, Laravel, Node.js, and cloud integration.

AI & ML

AI model training, fine-tuning, prompt engineering, and machine learning implementation with modern frameworks.

IT Support & Infrastructure

System administration, network setup, cybersecurity basics, and technical problem-solving.

IT Consultancy

Technology strategy, infrastructure consulting, digital transformation, and technical advisory services.

Skills

Technologies and tools I work with

AI & ML

AI TrainingPrompt EngineeringAI Model Fine-tuningMachine Learning

Software Development

Tailwind CSSJavaScriptReactTypeScriptNode.jsExpressLaravelPostgreSQLMySQLPHPGraphQLPythonASP.NET CoreMongoDBC#

Tools

Hardware TroubleshootingSoftware TroubleshootingGitSystem AdministrationVOIP SystemsDockerNetwork ConfigurationAWSActive DirectoryAzure

Education

Academic background

Bachelor of Science in Information Technology

Jomo Kenyatta University of Agriculture and Technology

2019 - 2022 Nairobi, KenyaInformation Technology

Comprehensive study of software development, networking, databases, and IT systems.

Honors:

Second Class Honors

Diploma in Information Technology

Jomo Kenyatta University of Agriculture and Technology

2016 - 2018 Nairobi, KenyaInformation Technology

Foundation in programming, networking, and IT support.

Honors:

Credit

Certifications

Professional credentials

Article 6.4 Accreditation & V&V Training

Nova Cert

2026

Article 6.4 MechanismValidation and Verification (V&V)Carbon Credit Accreditation+2

Google AI Essentials

Google

2025

Prompt engineeringArtificial Intelligence (AI)AI Tools+4
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Google Data Analytics Professional Certificate

Coursera / Google

2025

Data AggregationData AnalyticsData Cleaning+1
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Cybersecurity and Emerging Technologies Awareness

ICT Authority, Kenya

2024

CybersecurityThreat DetectionIncident Response
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Data Security Certification

Great Learning

2023

CybersecurityNetwork SecurityData Protection+3
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IBM Cybersecurity Certifications

IBM SkillsBuild

2021

CybersecurityInsident Response Platform
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IBM Cybersecurity Certifications

IBM SkillsBuild

2021

Cybersecurity PrinciplesIncident Response
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Professional Experience

My professional journey in tech

dMRV Technical Expert

Nova Cert LLC

May 2026 - Present Remote / Site VisitsContract

Serving as dMRV Technical Expert for NOVA CERT, providing independent technical review of digital MRV (measurable, reportable, verifiable) systems for Gold Standard-registered carbon projects.

Key Achievements:

  • Built and iterated a formal VV-09 Findings Report across three assessment rounds (4 FARs, 19 Clarification Requests, 0 CARs)
  • Identified material cross-source data inconsistencies in a Rwanda/Kenya sensor validation dataset (n=216), where the same underlying data produced conflicting accuracy figures and model coefficients across four independent project documents
  • Uncovered a technical contradiction between a developer's formal clarification response and a peer-reviewed journal publication (Water Research, 2026) regarding sensor hardware specifications
  • Adapted and produced a formal dMRV Validation Report using structured document templates while preserving full formatting integrity
  • Drafted consolidated technical clarification requests reconciling dataset and model discrepancies for client resolution

Technologies:

Gold Standard dMRV ProtocolIoT Sensor ValidationML Model AuditingGHG MRV SystemsVVB StandardsDOCX/XML Document Engineering

Full-Stack Developer & IT Officer

City Eye Hospital

August 2022 - Present Nairobi, KenyaFull-time

Leading full-stack development initiatives and IT infrastructure management for a healthcare facility.

Key Achievements:

  • Led full-stack development of company website using Laravel, React, and Bootstrap, achieving 35% increase in visitor traffic
  • Built high-quality UI elements with React and Tailwind CSS, enhancing user engagement by 40%
  • Developed scalable backend services with Node.js and Express, reducing response times by 50%
  • Implemented VOIP systems reducing telecommunication costs by 25%

Technologies:

ReactLaravelNode.jsPostgreSQLAWSGraphQL

Data Scientist

goCode Softwares

January 2023 - Present RemoteFull-time

Leading data science initiatives and building machine learning models that drive business decisions.

Key Achievements:

  • Built ML models that increased customer retention by 25%
  • Led team of junior data scientists on analytics projects
  • Implemented real-time analytics dashboard for business intelligence

Technologies:

PythonTensorFlowPower BISQLMachine Learning

AI Data Trainer (Coding Expert)

Remotasks

July 2023 - February 2024 RemoteContract

Annotated and reviewed datasets for machine learning models, ensuring high data quality.

Key Achievements:

  • Annotated and reviewed datasets achieving 98% data accuracy
  • Developed Python and Node.js scripts to automate data processing, improving efficiency by 35%
  • Collaborated with global AI specialists to refine algorithms

Technologies:

PythonNode.jsMachine LearningData Annotation

ICT Intern

Ministry of Devolution and ASALs

June 2021 - September 2021 Nairobi, KenyaInternship

Performed IT support and infrastructure management for government operations.

Key Achievements:

  • Reduced downtime by 15% through hardware/software troubleshooting
  • Automated user requirement collection, streamlining workflows by 20%
  • Conducted staff training increasing proficiency by 30%

Technologies:

NetworkingPythonData VisualizationIT Support

Freelance Full-Stack Web Developer

Self-Employed

June 2020 - Present Nairobi, KenyaFreelance

Designing and developing custom web solutions for diverse clients.

Key Achievements:

  • Designed custom web solutions using React, Node.js, Express, GraphQL, and PostgreSQL
  • Enhanced website features for local NGO resulting in 30% increase in user engagement
  • Built experimental web3 projects including wallet integrations and onchain data handling

Technologies:

ReactNode.jsGraphQLPostgreSQLWeb3Solidity

Featured Projects

Recent work and experiments

City Eye Foundation Website project preview2026
Web Development

City Eye Foundation Website

Support eye care programs across East Africa. Discover how City Eye Foundation is bringing sight-saving care to communities through outreach, surgery, and early screening.

reactlaraveltailwind css+4
Pesapal Junior Dev Challenge - In-Memory RDBMS project preview2026
System Development

Pesapal Junior Dev Challenge - In-Memory RDBMS

Built a simple relational database from scratch in Python featuring SQL-like queries, CRUD operations, primary/unique keys, basic hash indexing, INNER JOIN, interactive REPL, and Flask web app.

PythonFlaskSQL+1
Eye&U Hospital Website project preview2025
Web Development

Eye&U Hospital Website

Developed a full-stack hospital management website using Laravel, Statamic CMS, React, and MySQL, featuring patient appointment booking and email notifications.

LaravelReactMySQL+1
City Eye Hospital Website project preview2023
Web Development

City Eye Hospital Website

Developed a dynamic, user-friendly full-stack website with React frontend, Node.js backend, and PostgreSQL database for patient engagement and bookings.

ReactNode.jsPostgreSQL+1

Articles & Blog

Insights, tutorials, and thoughts on tech

Jan 15, 2025· 1 min read

Building Scalable APIs with GraphQL and Node.js

A comprehensive guide to designing efficient GraphQL schemas and resolvers for production applications. Learn best practices, optimization techniques, and real-world patterns.

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Nov 20, 2024· 1 min read

Optimizing React Applications for Performance

Best practices for building fast, responsive React applications with proper memoization, lazy loading, and code splitting techniques.

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Dec 8, 2024· 1 min read

Introduction to Web3 Development for Web Developers

Transitioning from traditional web development to blockchain and decentralized applications. Understand smart contracts, wallets, and DApp architecture.

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Let's Connect

Open to new opportunities

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