Focus
Backend & Full-Stack Engineering
Building reliable applications with strong APIs, databases, authentication, and well-structured architectures.
Software Developer
Mark Mwangi
Designing and engineering software that solves real problems.
I build full-stack and backend applications using TypeScript, React, Next.js, Node.js, MongoDB and PostgreSQL. My focus is on engineering secure APIs, scalable application architectures, and intuitive user experiences right from the initial design to production deployment.
About Me
The developer behind the code
Focused on building full-stack applications, backend systems, and developer tools using TypeScript and the JavaScript ecosystem.
I enjoy turning ideas into working software right from designing interfaces and APIs to working with databases, authentication, testing, and deployment. My focus is on writing clear, maintainable code and understanding the systems behind the applications I build.
I’m particularly interested in backend engineering, application security, system design, and scalable software architecture. I learn by building, testing, breaking, and improving real projects rather than stopping at theory.
Outside of development, I spend time playing chess, exploring technology, and learning how complex systems work.
Approach
Learn by Building
Turning ideas into projects, using feedback and failures to improve both the software and my engineering decisions.
Goal
Build Software That Matters
Developing practical software that solves real problems while continuing to grow into a stronger software engineer..
Education
Academic background
My academic journey and professional qualifications that validate my expertise.
Moi University
September 2024 - Present
Bachelor of Science in Computer Science: Ongoing
Njiiri School
January 2020 - November 2023
KCSE: A- (75 points)
Ansam Academy
October 2019
KCPE: 373 marks
Certificates
Learning milestones
Explore my achievements and the skills I've developed through various certifications.
Cisco2024
Introduction to Cybersecurity
Built a foundation in cybersecurity concepts, common threats, and safer digital habits.
IBM2024
Getting Started with Cybersecurity
Explored practical security principles, awareness habits, and the basics of staying protected online.
IBM2025
Cybersecurity Fundamentals
Completed core training around risk awareness, secure practices, and responsible digital behavior.
Experience
Professional growth
Discover my professional journey and the diverse experiences that have shaped my career as a software developer.
Backend Developer - Beren, LLC
December 2024 - March 2026
- Developed and maintained backend functionality for the RentHub Enterprise Application using TypeScript, Node.js, Prisma ORM, and PostgreSQL.
- Designed and implemented RESTful APIs and CRUD operations, integrating application logic with PostgreSQL databases through Prisma.
- Contributed to payment processing and analytics workflows, supporting core business operations and data-driven functionality.
- Debugged backend issues, investigated application failures, and performed quality assurance and integration testing across the RentHub Enterprise and Mobile Applications.
- Worked within an Agile development environment, participating in stand-ups, retrospectives, testing, debugging, and iterative feature development.
- Built foundational knowledge across JavaScript, TypeScript, Node.js, databases, Git, and GitHub through structured training and hands-on development.
CORE SKILLS
Technologies & Tools
My technical toolkit for building exceptional digital experiences.
Projects
A curated selection of projects showcasing my skills, creativity, and problem solving impact across various domains.
From full-stack applications to innovative tools, these projects highlight my passion for crafting impactful digital solutions.
Dev Vault
A private-by-default developer knowledge hub for writing documentation, saving code snippets, building APIs, and organizing technical projects.
QR Scanner PWA
Offline-first QR and barcode scanning, generation, history, and export in a modern installable PWA.
Central OAuth
A centralized OAuth 2.0 and OpenID Connect-inspired account security service with social login, MFA, passkeys, session management, and account recovery.
Testimonials
A few thoughts from clients and teammates along the way
What people are saying about working with me. The proof is in the stories
Mark turned a scattered set of product notes into a clear, searchable knowledge hub. The documentation is faster to maintain and much easier for the team to use.
Brian Otieno
Engineering Manager, Kijani Systems
The project shipped with a thoughtful mobile experience and clear communication at every stage. Mark handled feedback quickly without losing sight of the original goal.
Wanjiku Njoroge
Creative Director, Northstar Creative Co.
We needed a dependable authentication flow, not a demo that only worked on the happy path. Mark delivered a secure implementation and explained the trade-offs clearly.
Samuel Kiptoo
Product Manager, Mara Innovation Lab
Mark brought structure to a messy technical backlog and helped us turn the highest-value pieces into a focused release. The process was practical and professional.
Kevin Ochieng
Software Engineer, Bluebird Commerce
The interface feels simple without being bare. Mark listened carefully, improved the details that mattered, and delivered a polished experience we could confidently show customers.
Amina Hassan
Lead Product Designer, Lumen Design Studio
Mark turned a scattered set of product notes into a clear, searchable knowledge hub. The documentation is faster to maintain and much easier for the team to use.
Brian Otieno
Engineering Manager, Kijani Systems
The project shipped with a thoughtful mobile experience and clear communication at every stage. Mark handled feedback quickly without losing sight of the original goal.
Wanjiku Njoroge
Creative Director, Northstar Creative Co.
We needed a dependable authentication flow, not a demo that only worked on the happy path. Mark delivered a secure implementation and explained the trade-offs clearly.
Samuel Kiptoo
Product Manager, Mara Innovation Lab
Mark brought structure to a messy technical backlog and helped us turn the highest-value pieces into a focused release. The process was practical and professional.
Kevin Ochieng
Software Engineer, Bluebird Commerce
The interface feels simple without being bare. Mark listened carefully, improved the details that mattered, and delivered a polished experience we could confidently show customers.
Amina Hassan
Lead Product Designer, Lumen Design Studio
Mark turned a scattered set of product notes into a clear, searchable knowledge hub. The documentation is faster to maintain and much easier for the team to use.
Brian Otieno
Engineering Manager, Kijani Systems
The project shipped with a thoughtful mobile experience and clear communication at every stage. Mark handled feedback quickly without losing sight of the original goal.
Wanjiku Njoroge
Creative Director, Northstar Creative Co.
We needed a dependable authentication flow, not a demo that only worked on the happy path. Mark delivered a secure implementation and explained the trade-offs clearly.
Samuel Kiptoo
Product Manager, Mara Innovation Lab
Mark brought structure to a messy technical backlog and helped us turn the highest-value pieces into a focused release. The process was practical and professional.
Kevin Ochieng
Software Engineer, Bluebird Commerce
The interface feels simple without being bare. Mark listened carefully, improved the details that mattered, and delivered a polished experience we could confidently show customers.
Amina Hassan
Lead Product Designer, Lumen Design Studio
Blog
Insights, updates, and software notes
Stay informed about the latest trends and insights in the world of software development.
Building secure apps with clarity
A practical look at writing software that stays maintainable, safe, and easy to evolve — threat modeling, explicit errors, and defense in depth.
Learning by shipping small products
Why smaller, focused releases create faster feedback and better long-term results — scoping micro-MVPs, success metrics, and iteration discipline.
Designing for subtle performance gains
Small optimizations that add up: images, critical path, caching, and browser hints for consistent user-perceived speedups.
Subscription
Stay updated
Subscribe to my newsletter to receive updates on projects, blog posts, and industry insights.
Contact
Let's stay connected
Feel free to reach out. I'm always open to connecting and collaborating on exciting ventures.
Contact details
Reach out directly through any of the details below.
Rating
Rate the website
Choose a star rating and share a short note so I can keep improving the site.