You will get build or fix backend APIs using Node, Python, or Ruby on Rails
Project details
You will get clean, reliable backend API development or fixes for your web application. With over 10+ years of experience building production systems across SaaS, cybersecurity, fintech, and enterprise software, I deliver secure and high-performance backend solutions.
I specialize in Node.js, Python, and Ruby on Rails. Whether you need a bug fixed, a new endpoint created, a broken API repaired, or a full backend module developed, I build fast, scalable, and maintainable solutions that integrate smoothly with your frontend or mobile app.
I have designed microservices, real-time pipelines, queue-based communication, enterprise-level APIs, and high-traffic server architectures. My work has supported funded startups and large-scale applications with millions of transactions.
You will receive clear communication, clean code, and production-ready delivery — no hacks, no patchy work, and no surprises. If you need a dependable senior backend engineer who can understand your system quickly and deliver high-quality backend results, this project is the perfect fit.
I specialize in Node.js, Python, and Ruby on Rails. Whether you need a bug fixed, a new endpoint created, a broken API repaired, or a full backend module developed, I build fast, scalable, and maintainable solutions that integrate smoothly with your frontend or mobile app.
I have designed microservices, real-time pipelines, queue-based communication, enterprise-level APIs, and high-traffic server architectures. My work has supported funded startups and large-scale applications with millions of transactions.
You will receive clear communication, clean code, and production-ready delivery — no hacks, no patchy work, and no surprises. If you need a dependable senior backend engineer who can understand your system quickly and deliver high-quality backend results, this project is the perfect fit.
Programming Languages
JavaScript, Python, Ruby/Ruby on RailsCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$250
|
Standard
$600
|
Advanced
$1,200
|
|---|---|---|---|
| Delivery Time | 2 days | 5 days | 9 days |
Number of Revisions | 0 | 0 | 0 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code | - | - | - |
About Kamal
Senior Full-Stack & GenAI Developer|AI Automation, Python, Rails & AWS
Kohtla-Jaerve, Estonia - 10:50 pm local time
𝐍𝐞𝐞𝐝 𝐚 𝐒𝐞𝐧𝐢𝐨𝐫 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 𝐰𝐡𝐨 𝐚𝐜𝐭𝐮𝐚𝐥𝐥𝐲 𝐝𝐞𝐥𝐢𝐯𝐞𝐫𝐬? Whether it's a SaaS MVP, an AI powered automation system, or a broken backend that needs fixing. I build it clean, fast, and production ready. No endless back and forth. No half finished code. Just working software.
✅ 𝟏𝟎+ 𝐘𝐞𝐚𝐫𝐬 of full stack engineering across startups and enterprise
✅ 𝐒𝐞𝐧𝐢𝐨𝐫 𝐋𝐞𝐯𝐞𝐥 𝐀𝐈 & 𝐆𝐞𝐧𝐀𝐈 systems built and deployed in production
✅ 𝐑𝐞𝐚𝐥 𝐂𝐥𝐢𝐞𝐧𝐭𝐬. 𝐑𝐞𝐚𝐥 𝐏𝐫𝐨𝐝𝐮𝐜𝐭𝐬. 𝐑𝐞𝐚𝐥 𝐑𝐞𝐬𝐮𝐥𝐭𝐬.
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Hey, I'm Kamal Ejaz a Senior Full Stack & GenAI Developer with 10+ years of experience building scalable web applications, SaaS platforms, and AI driven systems for startups and enterprise clients worldwide.
I've served as Chief AI Officer at Evolve Machine Learners and Principal Software Engineer at Right Hand Cybersecurity, leading engineering teams, shipping enterprise products, and architecting systems that handle real world scale. I don't just write code. I take full ownership from architecture to deployment.
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𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 & 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞
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▸ 🤖 GenAI & AI Automation I build intelligent automation systems, AI chatbots, and GenAI powered features using OpenAI, LangChain & custom ML pipelines so your product works smarter
▸ 🚀 SaaS MVP Development I build your full product using Ruby on Rails, MERN or Next.js so you launch fast without technical debt
▸ ⚙️ Backend & API Engineering I design and build robust REST APIs in Python, Rails & Node.js so your integrations never break under load
▸ ☁️ Cloud Architecture (AWS) I architect your infrastructure with Docker, Kubernetes & CI/CD so your system scales without breaking
▸ 🔄 System Migrations & Optimization I migrate monoliths to microservices and optimize slow systems so your platform handles real traffic
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𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 & 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐈'𝐯𝐞 𝐖𝐨𝐫𝐤𝐞𝐝 𝐖𝐢𝐭𝐡
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→ ProducePay FinTech cash flow platform
→ Right Hand Cybersecurity Series A enterprise SaaS
→ Evolve Machine Learners AI automation for global enterprise
→ Branching Minds & Enriched Schools EdTech SaaS platforms
→ SaveRiding Real time sustainable mobility startup
▸ FinTech & Payments
▸ Cybersecurity SaaS
▸ AI & Automation
▸ EdTech
▸ Sustainable Tech
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𝐓𝐞𝐜𝐡 𝐒𝐭𝐚𝐜𝐤
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▸ AI/GenAI: OpenAI · LangChain · TensorFlow · AI Automation · Chatbot Development
▸ Frontend: React.js · Next.js · JavaScript · TypeScript
▸ Backend: Ruby on Rails · Python · Node.js · Flask · FastAPI
▸ Database: PostgreSQL · MongoDB · Redis
▸ Cloud & DevOps: AWS (Lambda, ECS, Aurora, S3) · Docker · Kubernetes · CI/CD · GitHub Actions
▸ Architecture: Microservices · REST APIs · Kafka · SQS · Serverless
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📩 𝐋𝐄𝐓'𝐒 𝐁𝐔𝐈𝐋𝐃 𝐒𝐎𝐌𝐄𝐓𝐇𝐈𝐍𝐆
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If you need a senior technical partner who owns the architecture AND writes the code, message me on Upwork and let's talk about what you're building.
Steps for completing your project
After purchasing the project, send requirements so Kamal can start the project.
Delivery time starts when Kamal receives requirements from you.
Kamal works on your project following the steps below.
Revisions may occur after the delivery date.
API review & kickoff
I will review the backend structure, inspect API routes, identify issues, and plan the fix or module implementation.