You will get I will fix, integrate, secure, and deploy your existing web application
Project details
I help businesses and startups fix, integrate, secure, and deploy existing web applications without unnecessary rebuilds.
If you are dealing with broken APIs, authentication issues, failed deployments, payment integrations, backend errors, database problems, cloud configuration, or production bugs, I focus on finding the root cause and delivering a reliable solution.
I work with Java/Spring Boot, Python/Django/FastAPI, React/Next.js, PostgreSQL, MySQL, MongoDB, Docker, CI/CD, AWS, GCP, DigitalOcean, VPS servers, OAuth, M-Pesa, Stripe, Twilio, WhatsApp APIs, and other third-party services.
My approach is simple: understand your current system, identify what is failing, implement the right fix, test it thoroughly, secure the relevant components, and make sure it works in production.
You get clear communication, maintainable code, proper testing, and a solution built around your actual business needs.
If you are dealing with broken APIs, authentication issues, failed deployments, payment integrations, backend errors, database problems, cloud configuration, or production bugs, I focus on finding the root cause and delivering a reliable solution.
I work with Java/Spring Boot, Python/Django/FastAPI, React/Next.js, PostgreSQL, MySQL, MongoDB, Docker, CI/CD, AWS, GCP, DigitalOcean, VPS servers, OAuth, M-Pesa, Stripe, Twilio, WhatsApp APIs, and other third-party services.
My approach is simple: understand your current system, identify what is failing, implement the right fix, test it thoroughly, secure the relevant components, and make sure it works in production.
You get clear communication, maintainable code, proper testing, and a solution built around your actual business needs.
Programming Languages
Python, Java, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$50
|
Standard
$75
|
Advanced
$150
|
|---|---|---|---|
| Delivery Time | 1 day | 2 days | 3 days |
Number of Revisions | Unlimited | Unlimited | Unlimited |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Frequently asked questions
15 reviews
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MB
Mirza Yasir B.
Jan 14, 2026
Eye-catching YouTube thumbnails
YF
Yolanda F.
Jan 3, 2026
Hiring Expert YouTube Video Editor + ElevenLabs VO Specialist ($3,000 + Bonuses)
Deadlines were not met consistently, and turnaround times were significantly longer than agreed upon. Communication could have been more proactive. The work delivered did not fully align with the project requirements.
SS
Sam S.
Dec 21, 2025
Videographer Needed for Interview-Style Documentary Editing
SJ
Steven J.
Feb 3, 2025
Looking for an experienced YouTube Thumbnail designer for a EV channel
Outstanding job from Samuel, providing quality work, professional and courteous, teamplayer. Definitely a recommendation if you're looking for quality work and professionalism.
MK
Miguel K.
Jun 3, 2024
I'm looking for a thumbnail designer for my youtube channnel.
About Samuel
Software Developer | Java | Spring-boot | React | Android | Flutter
92%
Job Success
Kisii, Kenya - 12:11 am local time
From SaaS platforms and custom business software to payment systems, APIs, and cloud infrastructure, I focus on building secure, maintainable, and production-ready solutions that businesses can confidently scale on.
My name is Samuel Maina, a full-stack software engineer and digital media specialist with 6 years of experience working with startups, founders, and existing businesses across software development, cloud systems, content development, and digital growth.
What I Help Businesses Build:
-SaaS Platforms
-Android and IOS mobile applications
-Custom Web Applications
-Banking & Payment Systems
-Payment Gateway Integrations
-Booking & Reservation Platforms
-Business Management Systems
-Learning Management Systems
-E-commerce Platforms
-Internal Automation Tools
-REST APIs & Backend Systems
-Cloud Infrastructure & Deployment Pipelines
Tech Stack & Tools:
-Java, Spring Boot, Python, Django, FastAPI, React, Next.js, Flutter, Kotlin, PostgreSQL, MySQL, MongoDB, Redis, Docker, Kubernetes, AWS, Google Cloud Platform, Contabo,Digital Ocean, REST APIs, API Security, System Design, Cloud Deployment, VPS, Ubuntu, Github Actions, CI/CD.
What I Deliver:
-Scalable and maintainable software architecture
-Clean, secure, and optimized backend systems
-Responsive and modern frontend interfaces
-Fast and reliable API and SDK integrations.
-Payment and transaction system integration (M-Pesa, Stripe, Adyen)
-Cloud-ready deployment infrastructure
-High-retention video content optimized for engagement
-Clear communication and reliable project execution
Why Clients Work With Me:
-Strong engineering and problem-solving skills
-Business-focused development approach
-Clean and maintainable code practices
-Fast communication and professional collaboration
-Ability to handle both technical systems and creative production
-Focus on long-term scalability, not short-term fixes
My goal is to help businesses build systems and digital products that create measurable impact and long-term value.
Let's connect and discuss how I can help you with your project.
Steps for completing your project
After purchasing the project, send requirements so Samuel can start the project.
Delivery time starts when Samuel receives requirements from you.
Samuel works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements and technical review
I review your application, issue, logs, architecture, integrations, and expected outcome.
Diagnose the root cause
I identify what is failing and confirm the best approach before making changes.