You will get Professional REST API Development and Integration Services
Top Rated
Top Rated
Project details
With extensive hands-on experience in developing and integrating REST APIs, I excel in leveraging the robust frameworks of .NET Core and Python to deliver seamless and efficient solutions. My expertise spans the entire API lifecycle, from designing and implementing RESTful endpoints to ensuring their secure and efficient integration with various client applications.
In .NET Core, I have crafted scalable and high-performance APIs, utilizing features like dependency injection, middleware, and asynchronous programming to enhance functionality and maintainability. My proficiency in Python complements this by offering agile and rapid development capabilities, where I employ frameworks such as Flask and Django to create versatile and resilient API solutions.
This dual expertise in both .NET Core and Python allows me to adapt to diverse project requirements, ensuring robust, reliable, and high-quality API integrations that meet and exceed business objectives.
In .NET Core, I have crafted scalable and high-performance APIs, utilizing features like dependency injection, middleware, and asynchronous programming to enhance functionality and maintainability. My proficiency in Python complements this by offering agile and rapid development capabilities, where I employ frameworks such as Flask and Django to create versatile and resilient API solutions.
This dual expertise in both .NET Core and Python allows me to adapt to diverse project requirements, ensuring robust, reliable, and high-quality API integrations that meet and exceed business objectives.
Programming Languages
ASP.NET, Java, C#Coding Expertise
PSD to HTML, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$85
|
Standard
$200
|
Advanced
$430
|
|---|---|---|---|
| Delivery Time | 2 days | 7 days | 15 days |
Number of Revisions | 2 | 4 | Unlimited |
Number of Pages | 1 | ||
Design Customization | - | - | |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code | - | - | - |
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Source Code
(+ 1 Day)
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AW
Antoine W.
May 21, 2026
Experienced Backend Developer with .NET Core and Database Skills
It was a pleasure working with Syed on our project. He was professional, and delivered quality work within the expected timelines. He adapted well to evolving requirements, communicated clearly throughout the collaboration, and showed commitment to the success of the project. His positive attitude made him a great addition to the team, and we truly appreciated his contribution. We would gladly collaborate with him again in the future.
KS
Kishwer S.
Jun 6, 2025
NET Core Developer with Microservices & React Experience Needed for Issue Resolution
Syed demonstrated excellent expertise in .NET Core and Microservices, and also handled the UI side effectively. He quickly resolved several issues I was facing on my site with professionalism and speed. He has strong work ethics, communicates clearly, and is a pleasure to work with. I would definitely hire him again. Highly recommended!
MN
Muhammad N.
Oct 7, 2024
.NET Core API Developer Needed for Employee Payroll Data Integration
Amazing work. He is a great problem solver and always communicates well. He delivered on time and followed best practices in code. I will surely hire him again. Highly recommended!
JT
Joshua T.
Jul 6, 2024
Work on a FinTech Project $5 per story completed - Vue 3, C#, MSSQL
Had to end the contract because of personal issues. He did a good job.
HG
Henry G.
Jun 13, 2024
Vue & Vuetify V-Calendar
Thank you!
About Syed Abdullah
AI Automation & Senior Software Developer | n8n | .NET | JAVA |REACT
100%
Job Success
Rawalpindi, Pakistan - 5:40 am local time
𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 & 𝗔𝗣𝗜 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻
A recent long-term engagement kept me on for nearly a year (1,000+ hours) building and maintaining a .NET Core backend, REST API layer, and SQL database for a single client — the kind of trust that comes from reliable, low-drama delivery.
C# / .NET Core (versions 3.1–8.0), Web API, REST API development, microservices, Entity Framework
SQL Server, MySQL, MongoDB, Firebase — database design and integration
React, Vue.js, Angular for frontend development when a project needs full stack coverage
Flutter for cross-platform mobile app development
𝘼𝙄 𝘼𝙪𝙩𝙤𝙢𝙖𝙩𝙞𝙤𝙣 & 𝘼𝙜𝙚𝙣𝙩 𝘿𝙚𝙫𝙚𝙡𝙤𝙥𝙢𝙚𝙣𝙩
Alongside backend and full stack development, I design automation workflows and AI agents that reduce repetitive, manual tasks for teams:
n8n workflow automation connecting your tools, APIs, and data sources
AI agent development and chatbot development using Claude and GitHub Copilot
Custom AI agents built with structured skill definitions (SKILL.md-based agent skills) for documented, maintainable automation — not a black box
API integration between AI tools and existing business systems
Recent client feedback:
"𝑷𝒓𝒐𝒇𝒆𝒔𝒔𝒊𝒐𝒏𝒂𝒍, 𝒅𝒆𝒍𝒊𝒗𝒆𝒓𝒆𝒅 𝒒𝒖𝒂𝒍𝒊𝒕𝒚 𝒘𝒐𝒓𝒌 𝒘𝒊𝒕𝒉𝒊𝒏 𝒕𝒉𝒆 𝒆𝒙𝒑𝒆𝒄𝒕𝒆𝒅 𝒕𝒊𝒎𝒆𝒍𝒊𝒏𝒆𝒔. 𝑨𝒅𝒂𝒑𝒕𝒆𝒅 𝒘𝒆𝒍𝒍 𝒕𝒐 𝒆𝒗𝒐𝒍𝒗𝒊𝒏𝒈 𝒓𝒆𝒒𝒖𝒊𝒓𝒆𝒎𝒆𝒏𝒕𝒔, 𝒄𝒐𝒎𝒎𝒖𝒏𝒊𝒄𝒂𝒕𝒆𝒅 𝒄𝒍𝒆𝒂𝒓𝒍𝒚 𝒕𝒉𝒓𝒐𝒖𝒈𝒉𝒐𝒖𝒕."
"𝑫𝒆𝒎𝒐𝒏𝒔𝒕𝒓𝒂𝒕𝒆𝒅 𝒆𝒙𝒄𝒆𝒍𝒍𝒆𝒏𝒕 𝒆𝒙𝒑𝒆𝒓𝒕𝒊𝒔𝒆 𝒊𝒏 .𝑵𝑬𝑻 𝑪𝒐𝒓𝒆 𝒂𝒏𝒅 𝑴𝒊𝒄𝒓𝒐𝒔𝒆𝒓𝒗𝒊𝒄𝒆𝒔, 𝒂𝒏𝒅 𝒂𝒍𝒔𝒐 𝒉𝒂𝒏𝒅𝒍𝒆𝒅 𝒕𝒉𝒆 𝑼𝑰 𝒔𝒊𝒅𝒆 𝒆𝒇𝒇𝒆𝒄𝒕𝒊𝒗𝒆𝒍𝒚. 𝑸𝒖𝒊𝒄𝒌𝒍𝒚 𝒓𝒆𝒔𝒐𝒍𝒗𝒆𝒅 𝒔𝒆𝒗𝒆𝒓𝒂𝒍 𝒊𝒔𝒔𝒖𝒆𝒔... 𝒘𝒊𝒕𝒉 𝒑𝒓𝒐𝒇𝒆𝒔𝒔𝒊𝒐𝒏𝒂𝒍𝒊𝒔𝒎."
I hold Top Rated Plus status with a 100% Job Success Score across 10 completed jobs on Upwork.
Whether you need a .NET Core backend developer for long-term API and microservices work, or want to explore n8n automation and AI agents to save your team hours, message me with what you're working on — I'll give you a straight read on fit.
Steps for completing your project
After purchasing the project, send requirements so Syed Abdullah can start the project.
Delivery time starts when Syed Abdullah receives requirements from you.
Syed Abdullah works on your project following the steps below.
Revisions may occur after the delivery date.
Will design the solution, discuss it with you and will start developing it.