JAY VIJAY LIYA
FULLSTACK ENGINEER
💡 Tech Lead | Systems Thinker | Scalable Software Architect
About Me
I design and build resilient, scalable systems that solve real-world problems, with a strong focus on FinTech and E-Commerce across the US, Europe, and South Asia.
As a hands-on tech lead, I focus on bridging deep technical execution with long-term architectural thinking. The systems I work on are fault-tolerant, horizontally scalable, and made up of modular, plug-and-play components. I build for evolution, not just operation.
🧩 Core Technical Strengths:
- Languages & Frameworks: Java, Spring (Boot and Cloud), concurrent programming
- Distributed Systems: Apache Kafka, Redis, asynchronous and event-driven architecture
- Databases: Oracle, PostgreSQL, MySQL, SQL Server, with a focus on performance tuning
- Architecture: Microservices, modular subsystems, domain-driven design
- Engineering Practices: Git mastery, clear documentation, strong mentoring culture
I've led projects where reliability is non-negotiable, scale is expected, and timelines are tight. I take a pragmatic approach and believe that good systems are built to last, not just to pass tests.
I'm not into chasing trends. I care about clarity, correctness, and consistency because that's what scales both technically and across teams.
Skills & Expertise
🚀 My Engineering Philosophy
Solving real-world problems
Building clean, scalable systems designed to last
Designing for change
Creating adaptable architectures for evolving business needs
Turning complexity into clarity
Simplifying systems and collaboration for maintainability
Working with purpose-driven engineers
Partnering with those who value the why, not just the how
🛠️ Still learning. Still building. Still excited by the hard problems.
If you're building software that needs to scale with confidence and evolve with purpose, let's connect.
Technologies I Work With
Work Experience
A journey through my professional experience building innovative solutions and leading development teams across multiple industries.
Senior Software Engineer
Tech Lead overseeing the Rental Cars, Protect & Explore Tech Accounting squad; leading 4 engineers to implement new accounting and invoicing rules, ensure system stability, onboard vendor suppliers, and enhance financial reporting.
Key Achievements:
- •Leading cross-functional teams migrating legacy systems from Oracle and Informatica to open-source databases and messaging platforms
- •Re-writing core functionality in Java to replicate legacy processes and ensure consistent downstream output
- •Developed multiple library projects used across squads, improving developer productivity
- •Reduced cloud costs through system performance optimization and Kubernetes configuration changes
- •Mentored and guided junior team members with technical questions and career development
Technologies Used:
Senior Associate
Worked closely with teams including developers and business analysts to understand new requirements and develop scalable solutions through agile methodology.
Key Achievements:
- •Analyzed, understood, and resolved reported production issues
- •Developed new functionality by writing elegant code and testing thoroughly
- •Increased code coverage for existing applications by adding new automated test cases
- •Migrated legacy code to newer technical stacks while maintaining functional equivalence
- •Helped business analysts with test case execution to speed up deliverables
Technologies Used:
Junior Software Engineer
Part of the statements team, responsible for collecting trading data from various systems, processing it, and providing statement information for customer reporting.
Key Achievements:
- •Developed new multi-threaded applications using Java, SQL, Apache Kafka, and Hibernate
- •Enhanced existing applications to improve performance, stability, and logging
- •Responsible for operations involving major reconciliation calculations, ensuring accuracy of statement information
- •Improved application performance and facilitated debugging through enhanced logging
Technologies Used:
Application Developer 2
Implemented utilities and developed new features for financial services applications using Java and Oracle technologies.
Key Achievements:
- •Implemented utility using Java and Apache POI for automation of jurisdiction configuration, reducing configuration time by 50%
- •Developed utility for generating customer deliverables (Technical Metadata) without manual intervention
- •Developed new screen to help customers understand various regulations supported
- •Part of team tasked with migrating application to REST-based architecture using Java Jersey and jQuery AJAX
- •Worked on Critical Patch Updates, providing patches to clients
Technologies Used:
Career Highlights
Key achievements and professional accomplishments that demonstrate my impact and expertise in software engineering and technical leadership.
Entrepreneurship Award Winner - Hackathon Leadership Excellence
Led a team to victory in a competitive hackathon, winning the Entrepreneurship Award for innovative solution development.
Technical Lead - Legacy System Modernization & Real-Time Architecture Migration
Led the technical migration of legacy Informatica-based batch invoicing system to a modern real-time Java-based architecture, significantly improving processing speed and system efficiency.
Revenue Intelligence Platform Architect - Interactive Brokers Client Analytics System
Developed a comprehensive revenue tracking system at Interactive Brokers that enabled detailed client revenue analysis and reporting.
Multi-Award Winner - Competitive Programming & Technical Excellence Recognition
Consistently demonstrated excellence in competitive programming and technical competitions throughout my professional career.
Education
My educational background that has shaped my expertise in software engineering and system architecture.
Education
Bachelor of Engineering in Information Technology (B.E. IT)
University of Mumbai – Thadomal Shahani Engineering College (TSEC)
Bandra, Mumbai
Focused on computer science fundamentals, software engineering, and practical application development with emphasis on real-world problem solving.
Relevant Coursework:
Achievements:
- Competed in multiple technical quiz and programming competitions, demonstrating strong problem-solving skills
- Selected to represent college at prestigious final year project expo, showcasing innovative solutions to industry professionals across Mumbai
- Developed comprehensive engineering projects utilizing C, Java, and MySQL, gaining hands-on experience in full-stack development
- Actively engaged in technical symposiums and coding events, fostering continuous learning and professional growth
Continuous Learning
I believe in continuous learning and staying up-to-date with the latest technologies. I regularly participate in online courses, attend conferences, and contribute to open-source projects.
Get In Touch
I'm always interested in new opportunities and exciting projects. Let's discuss how we can work together to build something amazing!
Let's Connect
Whether you have a project in mind, want to collaborate, or just want to say hello, I'd love to hear from you. Feel free to reach out through any of the channels below.