Open to opportunities

captain j

@captainj

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Senior Full Stack Engineer delivering enterprise systems with Java, Kotlin, Spring Boot, and robust integrations.

Malaysia

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What I'm looking for

I’m looking for senior full stack work where I can own system design, API integrations, and production delivery—ideally with remote global collaboration and the chance to mentor engineers while building reliable enterprise products.

I’m a Senior Full Stack Engineer with 10+ years of experience delivering enterprise-grade systems across finance, insurance, and fintech domains. I focus on backend architecture using Java and Kotlin with Spring Boot, while staying hands-on with frontend capabilities.

At MODEFAIR SDN BHD, I architected and developed a motor insurance quotation and policy issuance platform from scratch. I integrated multiple insurance providers via REST APIs for real-time premium calculation and submission, designed scalable database schemas and backend services using Spring Boot and JPA, and implemented bulk enquiry and bulk payment modules to improve operational efficiency.

I’ve built for reliability and performance: I’ve diagnosed and resolved complex production issues including performance bottlenecks and data inconsistencies, and managed deployments to UAT and Production environments. I also implemented automated batch repayment processing with concurrent transactions at SUNLINE TECHNOLOGY SDN BHD, resolving concurrency conflicts to ensure transactional consistency.

Beyond delivery, I mentor engineers and maintain quality through pull request reviews. My approach blends strong system design, third-party API integrations, database schema design, concurrency handling, and disciplined production deployment—supported by AI-assisted development tools like GitHub Copilot, Gemini, and Claude.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Modefair Sdn Bhd

Sep 2019 - Present (6 years 8 months)

Architected and developed a motor insurance quotation and policy issuance platform from scratch, integrating multiple providers via REST APIs for real-time premium calculation and submission. Designed scalable Spring Boot/JPA backend services, built bulk enquiry and bulk payment modules, resolved production performance/data issues, and managed UAT/production deployments while mentoring and reviewi

Java Kotlin Spring Boot JPA REST APIs Database Schema Design Batch Processing

Software Engineer

Sunline Technology Sdn Bhd

Sep 2017 - Aug 2019 (1 year 11 months)

Developed a P2P financing platform for SMEs and retail investors, including automated batch repayment processing. Implemented smart invest auto-matching for investor automation, resolved concurrency conflicts to ensure transactional consistency, and delivered backend enhancements with production releases.

Java Spring Boot SQL Batch Processing Concurrency REST APIs Backend Development Production Releases

Software Engineer

Manulife Technology & Services

Nov 2014 - Jul 2017 (2 years 8 months)

Rebranded and redesigned an insurance web platform using a mobile-responsive approach, improving customer usability across devices. Implemented a PCI-compliant credit card update workflow, developed tokenization batch processing to enhance payment security, and enhanced backend product flow logic for evolving business requirements.

Java Spring Boot HTML CSS JavaScript JQuery PCI Compliant Workflows Tokenization Batch Processing Backend

Software Engineer

Neuis Pte Ltd

Nov 2013 - Sep 2014 (10 months)

Enhanced an enterprise management system covering finance and sales modules by building a Cash Flow Statement module and reporting system. Improved search functionality and document retrieval performance through targeted backend enhancements.

Java Spring Boot SQL Reporting Systems Backend Development REST APIs Data Processing

Industry Training Software

TÜv Süd Psb Pte Ltd

Jun 2012 - Aug 2012 (2 months)

Developed path loss calibration test software in LabVIEW and supported instrumentation testing and validation activities. Assisted with calibration testing workflows to support measurement accuracy and validation requirements.

Validation Technical Documentation