You will get a fully functional, Python-based FastAPI backend with JWT auth & RBAC
Project details
I provide a fully functional, secure, and scalable FastAPI backend tailored for web and mobile applications. My backend solutions include JWT authentication, OAuth2 login (Google & Facebook), role-based access control (RBAC), and JWT key rotation for maximum security. I follow clean architecture principles with a structured folder setup, PostgreSQL integration, and fully documented APIs via Swagger for easy frontend integration.
Whether you’re building a small MVP or a large-scale SaaS platform, I deliver production-ready code with all required APIs, middleware support, environment configuration, and optional deployment guidance (Docker-ready). My focus is on security, scalability, and maintainability, ensuring your project can grow without technical debt.
I stand out by combining technical expertise with clear communication, providing detailed documentation, and delivering on time with quality and reliability. Your backend will be secure, robust, and ready for both web and mobile platforms.
Whether you’re building a small MVP or a large-scale SaaS platform, I deliver production-ready code with all required APIs, middleware support, environment configuration, and optional deployment guidance (Docker-ready). My focus is on security, scalability, and maintainability, ensuring your project can grow without technical debt.
I stand out by combining technical expertise with clear communication, providing detailed documentation, and delivering on time with quality and reliability. Your backend will be secure, robust, and ready for both web and mobile platforms.
Programming Languages
PythonCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$150
|
Standard
$350
|
Advanced
$700
|
|---|---|---|---|
| Delivery Time | 5 days | 8 days | 15 days |
Number of Revisions | 5 | 9 | Unlimited |
Design Customization | |||
Content Upload | |||
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$50 - $200About Vishal
Software Engineer | Java & Python Specialist | Microservices | Kafka
Kathmandu, Nepal - 5:10 am local time
I'm a Senior Software Engineer with 10+ years of experience building scalable, secure backend systems across fintech, logistics, education, and cybersecurity domains, with hands-on experience developing frontend applications using Angular, PHP, React, and Next.js for seamless full-stack solutions.
I specialize in designing clean architectures, building high-performance APIs, and solving complex backend problems — especially in systems where performance, security, and reliability matter.
What I Focus On
• Clean, maintainable, scalable backend architecture
• Designing the right architecture — whether modular monolith or microservices — based on business needs
• Secure authentication & authorization (OAuth2, JWT, RBAC)
• Event-driven systems using Kafka
• Efficient database schema design (PostgreSQL, MongoDB, DynamoDB, Oracle)
• Bridging backend systems with React, Next.js, Angular when needed
I don't just build endpoints — I design systems that stay maintainable as they grow.
Selected Project Experience
• Phishing Detection System: Processed millions of URLs daily to detect phishing and compromised credentials. Built with Python, Kafka, AWS Lambda, S3, and RDS MariaDB.
• Compromised Data Extraction System: Collected and cleaned stolen user data for threat intelligence teams, enabling organizations to detect active attacks. Implemented using Python, AWS Lambda, S3, DynamoDB, and Splunk.
• Phishing Analysis System: Analyzed thousands of phishing kits to identify attacker techniques and evasion methods. Built using Python, AWS Lambda, S3, PostgreSQL, Elasticsearch, and API Gateway.
• Online Education Platform: Backend development for a cloud-based learning system supporting real-time classes and coursework management. Built with Java Spring Boot, AWS S3, Amazon Cognito, and MongoDB.
• Online Course Enrollment System: Developed backend APIs with integrated local payment gateways (eSewa, IMEPay, Khalti) and secure notifications. Built with Java Spring Boot, React, Auth0, Amazon SES, and S3.
• TruckLoad Freight System: Designed a real-time freight marketplace backend enabling load discovery, bidding, and instant carrier offers. Built using Java Spring Boot, MongoDB, and Stripe.
• Mobile Banking Payment System & Android Apps: Developed secure backend services for transactions, wallet-to-wallet transfers, and real-time mobile integration. Built with Java Spring Framework and Oracle Database.
If you're looking for someone who understands backend architecture deeply and can turn complex requirements into clean, reliable systems, let's connect.
Note: I'm new on Upwork, so I don't have reviews yet. I’m offering a low introductory rate to help build trust and start collaborating on projects. Despite being new to the platform, I bring extensive real-world experience and am committed to delivering high-quality, reliable solutions from day one.
Steps for completing your project
After purchasing the project, send requirements so Vishal can start the project.
Delivery time starts when Vishal receives requirements from you.
Vishal works on your project following the steps below.
Revisions may occur after the delivery date.
Analysis & Backend Development
I review requirements, design architecture, set up FastAPI, configure the database, develop all APIs with JWT auth, OAuth2 (Google/Facebook), RBAC, JWT key rotation, middleware, push to your Git repo, show a local demo, and make changes if needed.