You will get FinTech Backend Development — Java, Spring Boot, Payments & Banking
Project details
🏦 FinTech Backend Development by a Senior Java Engineer
Building a FinTech product? Financial systems demand security, reliability, compliance, and scalability. I develop production-ready backends that handle payments, banking integrations, transaction processing, and regulatory requirements with confidence.
—— WHAT YOU GET ——
✅ Java 11/17 + Spring Boot backend development
✅ JWT/OAuth2 authentication and RBAC
✅ Payment & banking integrations (Stripe, Plaid, Adyen, Razorpay, etc.)
✅ KYC and identity verification integrations
✅ Idempotent transaction handling
✅ Audit logging and compliance-focused architecture
✅ Multi-tenant support
✅ Kafka/JMS event-driven processing (Premium)
✅ AWS deployment and CI/CD pipelines (Premium)
✅ Clean, documented, maintainable code
—— EXPERIENCE ——
🏦 Digital Banking (UOB – 8M+ customers)
🏦 Payment Processing (i2c Inc.)
🏦 E-Invoicing & ZATCA Compliance (Algoras)
🏦 AP/AR Onboarding Systems (BILL)
🏦 Customer Engagement & Campaign Platforms
—— STACK ——
Java 8/11/17, Kotlin, Spring Boot, Spring Security, Hibernate, JPA, Micronaut, PostgreSQL, MySQL, DynamoDB, Elasticsearch, AWS, Docker, Kubernetes, Kafka, JMS, JWT, OAuth2.
Building a FinTech product? Financial systems demand security, reliability, compliance, and scalability. I develop production-ready backends that handle payments, banking integrations, transaction processing, and regulatory requirements with confidence.
—— WHAT YOU GET ——
✅ Java 11/17 + Spring Boot backend development
✅ JWT/OAuth2 authentication and RBAC
✅ Payment & banking integrations (Stripe, Plaid, Adyen, Razorpay, etc.)
✅ KYC and identity verification integrations
✅ Idempotent transaction handling
✅ Audit logging and compliance-focused architecture
✅ Multi-tenant support
✅ Kafka/JMS event-driven processing (Premium)
✅ AWS deployment and CI/CD pipelines (Premium)
✅ Clean, documented, maintainable code
—— EXPERIENCE ——
🏦 Digital Banking (UOB – 8M+ customers)
🏦 Payment Processing (i2c Inc.)
🏦 E-Invoicing & ZATCA Compliance (Algoras)
🏦 AP/AR Onboarding Systems (BILL)
🏦 Customer Engagement & Campaign Platforms
—— STACK ——
Java 8/11/17, Kotlin, Spring Boot, Spring Security, Hibernate, JPA, Micronaut, PostgreSQL, MySQL, DynamoDB, Elasticsearch, AWS, Docker, Kubernetes, Kafka, JMS, JWT, OAuth2.
Programming Languages
Python, Java, KotlinCoding Expertise
Performance Optimization, Security, DesignWhat's included
| Service Tiers |
Starter
$2,000
|
Standard
$4,000
|
Advanced
$7,500
|
|---|---|---|---|
| Delivery Time | 14 days | 21 days | 34 days |
Number of Revisions | 2 | 3 | Unlimited |
Design Customization | |||
Content Upload | |||
Responsive Design | |||
Source Code |
About Muhammad
Senior Java & Spring Boot Developer | FinTech, E-Invoicing and ERPs
Lahore, Pakistan - 10:50 am local time
I help FinTech startups, banks, and ERP companies ship secure, scalable backend
systems — without the typical delays, bugs, or compliance headaches.
With 6+ years of hands-on experience, I've built production systems trusted by
millions of users at some of the most demanding companies in the world:
🏦 BILL (US FinTech) — Building APAR onboarding flows in Java 17 + Micronaut
🏦 United Overseas Bank (UOB) — Personal Internet Banking serving 8M+ customers
🏦 Algoras — ZATCA-compliant E-Invoicing platform (100% regulatory compliance)
🏦 i2c Inc. — Multithreaded financial computation engines for payment institutions
—— What I Build For Clients ——
✅ Scalable backend systems with Java 8/11/17, Spring Boot, Micronaut
✅ Microservices & RESTful APIs (clean, documented, production-ready)
✅ FinTech & banking integrations (payments, KYC, secure transactions)
✅ E-Invoicing & compliance systems (ZATCA, Peppol, regulatory-ready)
✅ ERP module development (Sales, Purchase, Invoicing automation)
✅ High-performance multithreaded services (30%+ efficiency gains)
✅ Event-driven architecture with Kafka, JMS, and async processing
—— My Tech Stack ——
• Languages: Java 8 / 11 / 17, Kotlin
• Frameworks: Spring Boot, Spring MVC, Micronaut, Hibernate, JPA
• Databases: PostgreSQL, MariaDB, DynamoDB, Elasticsearch, Informix
• Cloud & DevOps: AWS, Docker, Kubernetes, Jenkins, CI/CD
• Messaging: Apache Kafka, JMS
• Testing: JUnit, Mockito, Integration Testing
—— Results I've Delivered ——
📈 100% ZATCA regulatory compliance for E-Invoicing across multiple businesses
📈 25% operational efficiency boost through ERP automation
📈 30% reduction in manual processing via multithreaded financial calculators
📈 Backend features for a banking platform serving 8M+ retail customers
📈 End-to-end Supplier Hub with RBAC, validation engine, and bulk import
—— Why Clients Work With Me ——
✔ I treat your codebase like my own — quality, ownership, accountability
✔ Clear daily communication, no surprises, no missed deadlines
✔ Fluent English, comfortable with both async and sync collaboration
✔ Proven track record in regulated environments (banking, compliance, FinTech)
✔ I write clean, maintainable code that your team can build on for years
—— Availability ——
🟢 Currently accepting 1-2 new clients
🟢 Available 30+ hours/week
🟢 Flexible across US, EU, and APAC time zones
If you're building something serious in FinTech, banking, or e-invoicing —
or you need a senior Java engineer who ships production-grade systems —
let's talk. Send me a message with your project details and I'll respond within hours.
Steps for completing your project
After purchasing the project, send requirements so Muhammad can start the project.
Delivery time starts when Muhammad receives requirements from you.
Muhammad works on your project following the steps below.
Revisions may occur after the delivery date.
Discovery, NDA & Compliance Scope
We sign an NDA, align on your FinTech domain — payments, banking, KYC, lending — and confirm regulatory context (PCI, PSD2, ZATCA, SOC 2). I clarify deliverables, integrations, and risk areas, then share a detailed technical plan.
Architecture & Security Design
I design the backend architecture with security and compliance in mind: layered structure, secure auth (JWT/OAuth2), data isolation, audit trails, and PCI-aware data handling. You receive a clear architecture document for approval.