Kenya
Remote & On-Site
James Maroko · Full-Stack Engineer
I build digital products that win clients and grow businesses.
Web apps, e-commerce stores, and SaaS platforms — built fast, built secure, and built to convert. BSc Computer Science · MSc Digital Forensics & Cybersecurity candidate.
I build secure web apps & payment systems
and secure AI systems, AppSec
and DFIR for businesses.
Web apps, e-commerce stores, SaaS platforms, and landing pages built fast, built secure, and built to convert. Based in Kenya available remote & on-site globally.
BSc Computer Science · MSc Digital Forensics & Cybersecurity candidate · specialising in AppSec, DFIR and AI security · 3+ years delivering production systems across East Africa.
Kenya
Remote & On-Site
Who I Am
Engineering Solutions,
Not Just Software
I am James Maroko — a Full-Stack Software Engineer and MSc Cybersecurity candidate with over three years delivering production-grade applications for businesses in Kenya and beyond.
My advantage is combining deep engineering skill with a security-first mindset, so every system I ship is fast, tested, and hardened from day one — not patched after the fact.
What I Know
Skills & Expertise
Technologies and tools I use daily to deliver production-grade systems.
Engineering
Application Security
DFIR
AI Security
Also Working With
What I Offer
Services & Expertise
Whether you are a business looking to grow or a recruiter seeking a skilled engineer — let’s talk.
Web Apps & SaaS
End-to-end development of complex web applications and SaaS platforms engineered to scale with your business from day one.
- —Custom dashboards & admin panels
- —REST & GraphQL API development
- —Authentication & payment integration
- —Post-launch support & documentation
E-Commerce Stores
Revenue-optimised online stores with M-Pesa and PayPal integration, inventory management, and automated order workflows.
- —M-Pesa & PayPal integration
- —Product & inventory management
- —Mobile-first responsive design
- —SEO & performance optimisation
Landing Pages
High-converting landing pages built to capture leads and drive action — optimised for speed, Core Web Vitals, and search engines.
- —Conversion-focused design
- —SEO & Core Web Vitals
- —Analytics & tracking setup
- —Google PageSpeed optimisation
Cybersecurity & Secure Dev
Security audits, penetration testing, and secure application architecture to protect your systems and your users' data.
- —Vulnerability assessments
- —Secure code reviews
- —OWASP & SSL compliance
- —Incident response planning
Available for freelance projects, full-time roles, and contract work — let’s discuss →
How I Work
A Simple, Transparent Process
No confusion, no guesswork. Here is exactly what working with me looks like.
Discovery Call
We start with a free 30-minute call to understand your business, your goals, and what you need built. No technical jargon just a clear conversation about your vision.
Proposal & Timeline
Within 48 hours I send a detailed proposal scope, deliverables, pricing, and a realistic timeline. Everything in writing, no surprises.
Build & Review
I build in weekly sprints with regular progress updates. You review at each milestone and give feedback before I move forward. You are always in control.
Launch & Support
I deploy your product, run final tests, and hand over full documentation. Post-launch support is included for 30 days I do not disappear after delivery.
Ready to get started?
Book a free discovery call no commitment required.
Featured Work
Selected Projects
Real solutions for real businesses — engineered for performance and measurable impact.
Security-First Software Agency
Margsutech
My own secure software agency engineering web apps, SaaS platforms, and payment systems for businesses in Kenya and internationally. Security-first from the first commit: threat modelling, dependency scanning, SAST, and access control verification are standard on every engagement.
Medical Equipment Supply Platform
StarMed Technologies
Full corporate website for a leading Kenyan medical equipment supplier serving government hospitals, private clinics, and NGOs across East Africa. Features a 30-product catalogue, tender documentation, and KEBS/PPRA compliance credentials.
Construction Company Website
Ropi Robi Ventures
Corporate website showcasing a KES 295M+ construction project portfolio. Features a full project gallery, service pages, and quote request system for a leading Kenyan building and civil engineering contractor.
Professional Services Platform
Sealmiza Co.
Corporate platform for a Kenyan professional services firm delivering project solutions, infrastructure, IT services, outsourcing, and advisory. Features a clean multi-page architecture with a services showcase, insights blog, and client contact system.
Real-Time Crypto Data Platform
AfixCrypto Dashboard
A real-time cryptocurrency data dashboard consuming live Binance WebSocket feeds with sub-second BTC/USDT price updates, 24-hour market statistics, and a clean trading interface. Built to demonstrate high-frequency data handling and real-time UI rendering at scale.
Mental Health SaaS Platform
SalusCare
End-to-end clinical psychology platform with AI-guided patient intake, validated assessments (PHQ-9, GAD-7), online session booking, M-Pesa and card payments via Paystack, and encrypted client-therapist messaging.
AI-First Shopping Platform
Jamiefield E-Commerce
Premium AI-powered marketplace with AR product try-ons, smart personalised recommendations, multi-vendor support, subscription services, and global shipping to 150+ countries. Built for the future of online retail.
Enterprise POS & Operations
B12 Restaurant Ecosystem
Full enterprise restaurant management system with real-time POS dashboard, order tracking, waitress management, alcohol inventory monitoring, revenue analytics, and kitchen workflow management for bars and restaurants.
E-Commerce Platform
TumiaTen Marketplace
Kenya's premier marketplace for buying and selling used household items across all 47 counties. Features M-Pesa integration, automated social media promotion, and a listing-fee revenue model.
Business Operations App
Inventory Management System
Comprehensive web platform helping businesses track stock, manage orders, and optimise supply chain workflows with real-time dashboards and reporting. Deployed at 99% uptime with ongoing client support.
AI-Powered Real Estate
Property Intelligence Platform
AI-driven real estate analytics with instant property valuations, immersive 3D virtual tours, mortgage calculators, and neighbourhood insights for investors, agents, and buyers across Kenya.
Point of Sale System
MOGMAR POS
A full Point of Sale management system built for Kenyan businesses. Features M-Pesa STK Push native integration, KRA ETR receipt compliance, bank-grade secure development lifecycle (SSDL), real-time revenue and order analytics dashboards, and cashier PIN login.
Track Record
Work Experience
Jan 2022 — Present
Founder & Full-Stack Engineer
Margsutech · Kisii, Kenya (Remote, clients globally)
- —Design, build and ship production web applications end to end for clients across healthcare, retail, construction and professional services, owning frontend, backend, database and deployment.
- —Apply a documented secure delivery process on every engagement: threat modelling before build, dependency scanning, static analysis and access-control verification before release.
- —Integrate payment, authentication and messaging services including M-Pesa Daraja STK Push, Paystack, Stripe and PayPal on platforms processing real customer transactions.
- —Build AI-augmented features with prompt injection controls, encrypted data handling and human review before output reaches a client.
- —Sustain 99% uptime across deployed applications through proactive monitoring, pre-release checks and rapid incident response.
Nov 2025 — Present
ICT Intern — Digital Literacy Programme
Ministry of Education, Kenya
- —Supporting digital literacy integration across public primary schools under the national DLP.
- —Training teachers on ICT tools and safe, ethical use of technology in learning environments.
- —Promoting cybersecurity awareness and safe internet practices across school communities.
- —Managing ICT equipment, software installations, and system configurations for school labs.
Jul 2025 — Oct 2025
IT Intern
Pinnsoft Kenya Limited
- —Delivered IT support services including hardware and software troubleshooting.
- —Assisted in preparing e-procurement tenders for government projects.
- —Supported enterprise software deployment and client training programmes.
Jan 2023 — Apr 2023
ICT Specialist (Intern)
Ministry of Roads & Transport, Nairobi
- —Improved issue resolution time by 30% through structured end-user technical support.
- —Hands-on LAN and WAN troubleshooting across a live government network environment.
- —Managed hardware maintenance, software installations, printer configurations, and antivirus deployment.
- —Supported network security compliance and ICT policy adherence across the department.
Education
Academic Background
2025 – Present
MSc Digital Forensics & Cybersecurity
Open University of Kenya
2024 – 2025
Full-Stack Software Engineering
Moringa School
2019 – 2023
BSc Computer Science
St. Paul's University
Core Competencies
Client Feedback
What Clients Say
“James built our corporate platform with a level of professionalism that matched the standard we hold ourselves to. The site clearly communicates our services, and we have had positive feedback from clients who found us through it.”
Let’s Work Together
Start Your Project
Have an idea? Need a web app, e-commerce store, or landing page? Reach out and let’s turn your vision into a product that works.
Phone / WhatsApp
+254 796 083 899 / +254 114 230 410Location
Kenya · Available RemotelyPrefer a quick conversation? I usually reply within the hour.