Tahir M.
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Tahir M. is a Senior Java Backend Engineer with over four years of experience in designing and developing high-performance, scalable microservices and RESTful APIs using the Java Spring Boot ecosystem. Based in Karachi, Pakistan, he possesses a strong background in cloud-native application development on both AWS and GCP, with expertise in real-time data streaming using Apache Kafka and Redis caching. His work in the fintech and banking sectors includes large-scale database migrations and the seamless integration of Docker, Kubernetes, and CI/CD pipelines to enhance infrastructure robustness. Tahir advanced his career at MATACS by designing cloud-native integration pipelines and developing Kafka-based messaging solutions. Previously, he held roles such as a Full Stack Java Developer at M3 Tech Pvt Ltd, where he executed a complex banking system database migration and optimized SQL queries, and a Java Developer at Arittek Pvt Ltd. His freelance projects, including the NANO-GRID Manager, supplemented his full-stack versatility with Python and Flask. Tahir's academic foundation is a BS in Software Engineering from the University of Sindh.
Experience
Software Engineer (Backend to Full Stack)
MATACS · 2025 — PresentDesigned a cloud-native integration pipeline between AWS and GCP leveraging Apache Kafka for real-time data synchronization. Developed and maintained messaging solutions based on Kafka to ensure reliable, high-throughput data streaming. Created dashboards using React and Next.js for monitoring cost and production metrics in an enterprise manufacturing reporting system. Optimized performance by profiling and enhancing Teradata and SQL queries with multi-level filtering. Transformed a legacy monolithic application into a modern microservices-based architecture following best practices.Full Stack Java Developer
M3 Tech Pvt Ltd · 2023 — 2025Engineered Spring Boot microservices and REST APIs utilizing Java, the Spring ecosystem, and J2EE, while documenting APIs through Swagger and OpenAPI. Directed the large-scale migration of a banking system database containing millions of records, guaranteeing zero data loss and minimal downtime. Enhanced SQL query performance on extensive banking datasets, addressing execution time and resolving production issues. Crafted unit and integration tests with JUnit and Mockito to uphold code quality and ensure comprehensive test coverage. Engaged with clients to gather requirements and deliver timely technical solutions.Java Developer
Arittek Pvt Ltd, Karachi · 2021 — 2023Developed Java applications with Spring Boot, Spring Data JPA, Hibernate, and other Spring technologies. Increased system performance and maintainability through code optimization and refactoring. Established and maintained GitLab CI/CD pipelines for automated workflows encompassing build, test, and deployment. Contributed to code reviews, design discussions, and the implementation of new features in alignment with established coding standards.
Skills & Expertise
Education
- Bachelor of Science in Software EngineeringUniversity of Sindh · 2017 — 2020
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