Home - Aijaz Qazi

Aijaz Qazi

Back-end Developer

Programmer

Software/Systems Architect

Freelancer

About Me

Hello! I’m Aijaz Qazi.
I'm a backend-focused Software Engineer and Systems Architect with over a decade of experience designing scalable, high-performance systems. I specialize in cloud-native architectures, distributed systems, and microservices, with a track record of leading teams, optimizing infrastructure, and delivering enterprise-grade solutions that drive measurable business impact.

Age 33
Residence Singapore
Freelance Available

My Services

Back-End

Design and implementation of scalable, secure, and high performance backend systems using Java, Python, Node.js, and cloud-native technologies.

System Architecture

Enterprise grade architecture design, including microservices, event-driven systems, and distributed infrastructure optimized for performance and scalability.

Cloud Solutions

Development and deployment of cloud-native applications on AWS and Azure, leveraging services like EC2, Lambda, RDS, and Kubernetes for maximum efficiency.

DevOps & CI/CD

Automation of development workflows using Docker, Jenkins, GitHub Actions, and Terraform to enable reliable and fast delivery pipelines.

Clients

Testimonials

Aijaz played a pivotal role in transforming our legacy platform into a modern, scalable microservices system. His deep backend knowledge and leadership helped us reduce latency and handle 5,000+ concurrent users seamlessly.

Jason Tan

CTO, Print City Production. Singapore

Working with Aijaz was a game-changer. He architected our cloud-native solution on AWS with such precision that we saw an immediate drop in infrastructure costs and a 40% boost in processing efficiency. Truly a backend wizard.

Mei Lin

Product Manager, LAC Global Pte Ltd

Working with Aijaz was a seamless experience from start to finish. He understood our operational requirements quickly and delivered a robust backend system that streamlined our booking workflows and enhanced data reliability. His attention to detail and commitment to performance made a noticeable difference in our day-to-day operations.

Aditya S

Director, Landstar Multilink (India)

Fun Facts

10+ Years of Experience

7+ Major Certifications Earned

400+ Projects Delivered

10+ Teams Led Successfully

Resume

Experience

2024 - Present

Software/Systems Architect

A-IT Software Services, Singapore

Architected and implemented scalable backend systems for enterprise-grade applications, utilizing microservices architecture, RESTful APIs, and event-driven design patterns to support high-traffic environments.
Led a team of 8 engineers in designing and deploying a cloud-native e-commerce platform on AWS, integrating services like EC2, Lambda, and RDS, achieving 99.9% uptime and a 35% reduction in latency.
⁠Collaborated with product managers, DevOps, and QA teams to define technical requirements, streamline CI/CD pipelines using Jenkins and Docker, and ensure seamless deployment cycles.
⁠Spearheaded the migration of a monolithic legacy system to a microservices-based architecture, reducing operational costs by 30% and improving scalability for 10,000+ concurrent users.
⁠Conducted in-depth code reviews and implemented coding standards, reducing technical debt by 25% and enhancing maintainability.
Mentored junior developers on advanced backend concepts, including API optimization, database indexing, and asynchronous processing, fostering a culture of technical excellence.

2022 - 2024

Protocol Engineer

One X Tech, Singapore

Designed and optimized communication protocols for IoT ecosystems, enabling secure and efficient data exchange between devices and backend servers using MQTT and WebSocket protocols.
Developed a high-throughput data ingestion pipeline using Node.js and Kafka, processing 1M+ messages per hour with sub-second latency.
Partnered with hardware teams to integrate backend APIs with embedded systems, ensuring compatibility across diverse IoT devices and improving data reliability by 20%.
Performed rigorous performance testing and profiling, identifying bottlenecks and optimizing protocol efficiency, resulting in a 25% improvement in response times.
Authored comprehensive technical documentation and SDKs, reducing onboarding time for new developers by 15%.

2022 - 2020

Senior Developer

Vakrangee Limited, Mumbai, India

Led the development of backend services for a financial services platform using Java, Spring Boot, and Hibernate, supporting 50,000+ daily transactions with zero downtime.
Designed and implemented RESTful APIs and GraphQL endpoints, enabling seamless integration with front-end applications and third-party services.
Optimized database performance by refactoring SQL queries and implementing indexing strategies on MySQL and PostgreSQL, reducing query execution time by 40%.
⁠Collaborated with UX/UI teams to ensure backend services supported dynamic front-end requirements, improving user satisfaction by 15%.
Mentored a team of 5 junior developers, providing hands-on training in test-driven development (TDD) and version control using Git, resulting in a 30% improvement in code quality.

Skills

Technical Skills

Programming Languages: Java (Expert), Python (Expert), Node.js, C#, Go, PhP, Assembly (x86 x64, ARM)
Frameworks & Libraries: Spring Boot, JUnit, Mockito, TestNG, Hibernate, Django, Express.js, Flask, Serverless Framework, React.
Database Technologies: MySQL, PostgreSQL, MongoDB, Oracle, Redis, Amazon RDS & Aurora, DynamoDB
API Development: RESTful APIs, GraphQL, gRPC, AWS API Gateway, Postman
DevOps & CI/CD: Jenkins, Docker, Kubernetes, Git, GitHub Actions, Terraform, Azure DevOps Pipelines, AWS CodePipeline, Amazon ECS / EKS, AWS CloudFormation, Ansible, Chef, Puppet, AWS CloudWatch, Prometheus + Grafana, ELK Stack
Cloud Platforms & Tools: AWS (EC2, Lambda, S3, RDS, IAM, VPC, DynamoDB, CloudFront, Route53, ), Azure, Google Cloud Platform, Serverless Architectures, Cost Optimization and High Availability Design, Well Architected Framework
Other Tools: Kafka, RabbitMQ, Elasticsearch, Postman, Selenium, Azure Boards, JIRA, Confluence, Maven, Webpack, SonarQube, ESLint
Methodologies: Agile, Scrum, Kanban, Test-Driven Development (TDD), DevOps

Major Certifications

Certified ScrumMaster (CSM)
AWS Certified Solutions Architect
Project Management Professional (PMP)
Oracle Certified Professional, Java SE Programmer
TOGAF 10 Certified – Enterprise Architecture (Foundation)
Microsoft Certified: DevOps Engineer Expert
PRINCE2 (Foundation)
CompTIA Security+
ISTQB Certified Tester (Foundation)

Languages

English
Hindi
Malay
Mandarin

Quote

Aijaz doesn’t just build systems... He builds solutions that move businesses forward. His technical precision, reliability, and foresight have been instrumental in helping us scale our Cloud analytics operations with confidence.