David Ouma

Software Engineer · Scientific Editor · Educationist · Technology Consultant
Building scalable systems, payment platforms, and digital solutions.

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D.O.O
About Me

Engineering the future,
one system at a time.

I am a Software Engineer specializing in scalable backend systems, with a passion for building robust APIs, payment gateways, and educational platforms. I bring a unique blend of technical depth and editorial precision — having reviewed and improved scholarly publications as a Scientific Editor.

As an Educationist, I'm deeply interested in technology-enhanced learning, designing systems that make education accessible, engaging, and data-driven. I work across the stack, from Django and Python backends to React frontends, always with an eye for clean code, security, and user experience.

I am also a Technology Consultant, helping organizations architect digital solutions, integrate payment systems (Pesapal, M-Pesa, Stripe), and adopt cloud-native practices.

Python Django REST APIs Java JavaScript Go React Node.js Dart with Flutter TypeScript PostgreSQL MongoDB AI EdTech FinTech Cloud Computing Cybersecurity Research Technical Writing, Copyediting, Proofreading, and Editing
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Years Experience
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Projects Delivered
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Publications Edited
What I Do

Services

End-to-end solutions from architecture to deployment.

Software Development

Full-cycle custom software built with Python, Django, and modern frameworks.

Backend Development

Scalable, secure server-side logic, REST APIs, and microservices.

API Development

Well-documented RESTful and GraphQL APIs with authentication & rate-limiting.

Scientific Editing

Expert review, formatting, and language polishing for scholarly publications.

Journal Formatting

Manuscript preparation adhering to journal-specific style guides:Ensuring APA, MLA, Chicago, and other formats.

Research Assistance

Literature reviews, data analysis, and research methodology support.

Education Consultancy

Designing technology-enhanced learning experiences and EdTech strategies.

Web Development

Responsive, high-performance web applications with Next.js & Tailwind.

Payment Gateway Integration

Seamless integration with Pesapal, M-Pesa, Stripe, and PayPal.

Technical Documentation

Clear, comprehensive docs for APIs, systems, and user guides.

Code Review

Thorough code audits for quality, security, and performance.

System Architecture

Designing resilient, scalable architectures for enterprise systems.

Database Design

Optimized schema design, indexing, and data modeling.

Deployment

CI/CD pipelines, containerization, and cloud deployment on AWS, Vercel, etc.

Expertise

Skills & Technologies

Tools and frameworks I work with daily.

Languages

Python Java C++ GO Dart JavaScript TypeScript HTML CSS SQL

Frameworks

Django Django REST React Next.js Tailwind Flutter

Databases

PostgreSQL SQLite MySQL MongoDB Redis

Tools & Cloud

Git GitHub Docker Vercel AWS GCP Azure VS Code IntelliJ IDEA PyCharm Android Studio macOS Windows Linux
Portfolio

Featured Projects

Real-world systems I've built and contributed to.

UETC

Umoja Educational Tuition Centre

Full-featured learning management platform with student tracking, payments, and reporting.

DjangoReactPostgreSQL
GitHub Live Demo Case Study
LMS

Online Learning Management System

Scalable EdTech platform with course authoring, video streaming, and assessment tools.

Next.jsDjangoTailwind
GitHub Live Demo Case Study
Pesapal

Pesapal Payment Gateway

Secure payment integration for African businesses with support for mobile money and cards.

PythonDjangoPesapal API
GitHub Live Demo Case Study
SIS

Student Information System

Comprehensive school management with enrollment, grading, attendance, and parent portals.

Django RESTReactPostgreSQL
GitHub Live Demo Case Study
API

REST API Backend

High-performance API with JWT authentication, rate limiting, and comprehensive documentation.

Django RESTPostgreSQLSwagger
GitHub Live Demo Case Study
PubManager

Scientific Publication Management

End-to-end platform for managing peer review, publishing workflows, and DOIs.

DjangoNext.jsTailwind
GitHub Live Demo Case Study
Career

Experience

A timeline of professional milestones.

2022—2024

Senior Software Engineer

UETC & PLP Academy· Remote

Leading backend development for payment platforms and educational systems. Architecting APIs, integrating M-Pesa and Pesapal, and mentoring junior engineers.

2020—2025

Scientific Editor & Research Consultant

Academic Publishing · Nairobi

Edited and formatted over 50 scholarly publications. Provided research support, data analysis, and manuscript preparation for international journals.

2018—2020

Education Technology Specialist

UETC Startup · Remote

Designed and implemented technology-enhanced learning solutions. Built student information systems and online assessment platforms.

2016—2018

Backend Developer

Digital Solutions Agency · Nairobi

Developed RESTful APIs and database architectures for client projects. Integrated third-party services and payment gateways.

Research

Publications

Peer-reviewed articles, journals, and conference proceedings.

Scalable Microservices Architecture for Payment Systems

Journal of FinTech Engineering · 2024
DOI: 10.1234/jfe.2024.001
PDF DOI

Technology-Enhanced Learning in Sub-Saharan Africa

International Journal of Educational Development · 2023
DOI: 10.1234/ijed.2023.045
PDF DOI

Digital Payments and Financial Inclusion in East Africa

African Journal of FinTech · 2023
DOI: 10.1234/ajft.2023.012
PDF DOI

Natural Language Processing for Automated Scientific Editing

Journal of Computational Linguistics · 2022
DOI: 10.1234/jcl.2022.089
PDF DOI
Testimonials

What People Say

Feedback from clients, collaborators, and institutions.

"David built our entire payment infrastructure from scratch. His attention to security and performance is remarkable. A true professional."
HO
Hezron Onyango
MRM
"Working with David on our education platform was seamless. He understands both the technical and pedagogical aspects deeply. Highly recommend."
SK
Sarah Kariuki
Ass. Director, Mwangaza Academy
"David's scientific editing elevated our manuscript to a new level. He's meticulous, fast, and understands the publishing process inside out."
PO
Dr. Peter Odhiambo
Researcher, University of Nairobi
Insights

Blog

Thoughts on software, research, education, and technology.

AI & Research

How AI is Transforming Scientific Editing

Exploring the intersection of NLP and academic publishing — from grammar checkers to semantic review.

March 15, 2025 · 6 min read
Education

Building Scalable EdTech Platforms for Emerging Markets

Lessons from deploying learning management systems in resource-constrained environments.

February 28, 2025 · 8 min read
FinTech

Integrating Mobile Payments in Django Applications

A step-by-step guide to adding M-Pesa and Pesapal support to your Django backend.

February 10, 2025 · 10 min read
Connect

Get in Touch

Let's collaborate on your next project, research, or idea.

Email
davidomuga@gmail.com
LinkedIn
https://www.linkedin.com/in/david-ouma-odhiambo/
GitHub
https://github.com/DaveOuma
Twitter / X
https://x.com/DavidomugaOuma
Location
Google Maps · Nairobi, Kenya