Open to opportunities

Muhammad Wali Ullah

@muhammadwaliullah

Message

Senior software engineer building scalable, secure event-driven microservices for FinTech with AWS and Java.

Australia

Message

What I'm looking for

I’m looking to build compliant, high-performance FinTech backend systems—scalable event-driven microservices on AWS—while owning integrations, APIs, and production support within fast Agile/Scrum teams.

I’m a Senior Software Engineer with 5+ years of experience in backend development for FinTech, focused on scalable, secure, event-driven microservices. I build high-performance systems that support real-world transaction flows and demanding integration requirements.

In my recent role at CloudCard Inc., I lead backend engineering efforts to enhance middleware platforms and optimize API performance for financial integrations. I mentor junior engineers, collaborate cross-functionally to strengthen CI/CD pipelines, and oversee scalability, reliability, and compliance across payment processor and third-party API integrations.

Earlier, I developed Java Spring Boot APIs and event-driven microservices using AWS SQS and Kinesis to manage high-volume financial transactions. I also optimized database queries and implemented distributed caching strategies, improving API response time by 35%.

I enjoy working in Agile/Scrum environments and taking ownership of production support, REST API development, and distributed systems. My expertise spans AWS messaging and monitoring (SQS, Kinesis, CloudWatch), PostgreSQL/SQL, and API integrations with payment processors, KYC vendors, and ACH.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

CloudCard Inc.

Jul 2025 - Present (1 year)

Led backend engineering efforts to enhance middleware platforms and optimize API performance for financial integrations. Mentored junior engineers, improved CI/CD pipelines, and supported scalable, reliable, compliant operations across payment processor and third-party API integrations.

Java Spring Spring Boot Microservices REST API Development Middleware Systems API Performance CI CD AWS Kinesis PostgreSQL Scalability Reliability & Compliance

Software Engineer

CloudCard Inc.

Jan 2023 - Jun 2025 (2 years 5 months)

Developed Java Spring Boot APIs and event-driven microservices using AWS SQS and Kinesis to process high-volume financial transactions. Optimized database queries and introduced distributed caching to improve API response time by 35%, and upgraded services to Java 21 and Spring Boot LTS.

Java Spring Boot SQS AWS Kinesis Event Driven Architecture Microservices PostgreSQL SQL Java 21+

Associate Software Engineer

CloudCard Inc.

Jul 2021 - Dec 2022 (1 year 5 months)

Integrated and maintained third-party APIs for payment processors, KYC, and ACH to expand platform interoperability and compliance. Contributed to a high-availability B2B middleware system for U.S. payment processing and supported stable post-deployment operations using PostgreSQL.