You will get a secure and scalable REST API for your SaaS or web app
Project details
I help startups and growing businesses build reliable, scalable, and high-performance backend systems that are ready for real users and real traffic.
This project is not just about writing code. It’s about understanding your business goals, designing a clean backend architecture, and delivering a solution that is easy to maintain, secure, and scalable.
I specialize in:
• Custom API & backend development
• SaaS backend architecture
• Performance optimization & refactoring
• Secure and clean database design
• Integrations with third-party services
Whether you are:
• Launching a new SaaS product
• Improving an existing backend
• Fixing performance or scalability issues
• Refactoring legacy code
I focus on clear communication, realistic timelines, and clean deliverables. You’ll get well-structured code, transparent progress updates, and a backend that supports your product’s growth instead of blocking it.
If you’re looking for a developer who thinks like a partner, not just a coder, this project is designed for you.
This project is not just about writing code. It’s about understanding your business goals, designing a clean backend architecture, and delivering a solution that is easy to maintain, secure, and scalable.
I specialize in:
• Custom API & backend development
• SaaS backend architecture
• Performance optimization & refactoring
• Secure and clean database design
• Integrations with third-party services
Whether you are:
• Launching a new SaaS product
• Improving an existing backend
• Fixing performance or scalability issues
• Refactoring legacy code
I focus on clear communication, realistic timelines, and clean deliverables. You’ll get well-structured code, transparent progress updates, and a backend that supports your product’s growth instead of blocking it.
If you’re looking for a developer who thinks like a partner, not just a coder, this project is designed for you.
Programming Languages
PHP, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$149
|
Standard
$449
|
Advanced
$899
|
|---|---|---|---|
| Delivery Time | 3 days | 7 days | 14 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 1 | 3 | 5 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$75 - $350
Additional Revision
+$50
Additional Page
(+ 1 Day)
+$100
API Performance Audit
(+ 1 Day)
+$150
Backend Code Review
(+ 1 Day)
+$200Frequently asked questions
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TV
Thom V.
Feb 10, 2026
Frontend / Fullstack dev needed to clean up and stabilize an existing web app (Bolt.new)
TV
Thom V.
Jan 17, 2026
Frontend / Fullstack dev needed to clean up and stabilize an existing web app (Bolt.new)
Mert is outstanding! He's assertive, thinks like a partner and is an excellent dev. Would recommend!
BJ
Bharti J.
Feb 4, 2025
Looking for HTML /CSS expert to start immediately.
BJ
Bharti J.
Nov 6, 2022
Looking for HTML /CSS expert to start immediately.
On-time delivery and clear communication! Will hire again.
About Mert
Full Stack Engineer | Web Applications & APIs
100%
Job Success
Tekirdag, Turkey - 5:47 am local time
I’m comfortable handling complete features end to end — user interfaces, APIs, databases, and integrations — without unnecessary complexity.
I’ve worked on different types of projects including custom web applications, dashboards, admin panels, APIs, and internal tools.
I can join existing codebases or build new features from scratch, focusing on clean implementation and reliable delivery.
If you’re looking for a developer who can take ownership and deliver without constant supervision, I’m ready to help.
Steps for completing your project
After purchasing the project, send requirements so Mert can start the project.
Delivery time starts when Mert receives requirements from you.
Mert works on your project following the steps below.
Revisions may occur after the delivery date.
Backend Architecture & Planning
I review your requirements, clarify open points if needed, and design the backend architecture, data models, and API structure.
Backend & API Development
I develop the backend, APIs, and core logic following best practices for performance, security, and scalability.