Hi, I’m Jeremiah Guan, a Laravel-focused backend engineer with 6+ years building SaaS and management platforms in PHP and MySQL. I currently work remotely from Dublin and am available for short-term engagements. I focus on delivering robust back-end modules, clean architecture, security, and performance, with clear documentation and handover. I’ve led multi-tenant SaaS projects, built RESTful APIs used by multiple front-ends, integrated third‑party providers, and collaborated closely with project owners to scope work and plan timelines. I value code quality, maintainability, and scalable design, and I keep security best practices at the forefront.

Jeremiah Guan (Junhan)

Hi, I’m Jeremiah Guan, a Laravel-focused backend engineer with 6+ years building SaaS and management platforms in PHP and MySQL. I currently work remotely from Dublin and am available for short-term engagements. I focus on delivering robust back-end modules, clean architecture, security, and performance, with clear documentation and handover. I’ve led multi-tenant SaaS projects, built RESTful APIs used by multiple front-ends, integrated third‑party providers, and collaborated closely with project owners to scope work and plan timelines. I value code quality, maintainability, and scalable design, and I keep security best practices at the forefront.

Available to hire

Hi, I’m Jeremiah Guan, a Laravel-focused backend engineer with 6+ years building SaaS and management platforms in PHP and MySQL. I currently work remotely from Dublin and am available for short-term engagements. I focus on delivering robust back-end modules, clean architecture, security, and performance, with clear documentation and handover.

I’ve led multi-tenant SaaS projects, built RESTful APIs used by multiple front-ends, integrated third‑party providers, and collaborated closely with project owners to scope work and plan timelines. I value code quality, maintainability, and scalable design, and I keep security best practices at the forefront.

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Experience Level

Expert
Expert
Expert
Intermediate

Language

English
Advanced

Work Experience

Laravel / Full-stack Developer at Nanjing Association for Culture Communication
December 1, 2023 - November 5, 2025
Led the development of a Laravel-based international events and registration platform enabling 100+ enterprise users. Designed and implemented core multi-tenant modules (events, sessions, registrations, submissions, notifications) with clean architecture, form requests, gates, and RBAC. Built RESTful APIs and internal services consumed by multiple front-ends, with robust validation and event-driven workflows. Integrated third-party providers (payments, partner systems) via structured Laravel services handling webhooks, retries, idempotency, and error logging. Ensured security through proper authentication/authorization, CSRF protection, and SQL injection safeguards. Optimized critical queries and profiled slow endpoints to sustain performance under peak traffic. Collaborated with project owners to plan milestones and deliver self-contained features within 1–2 sprints.
Laravel/PHP Backend Developer at Qichuang Technology Ltd
October 31, 2022 - October 31, 2022
Developed Laravel/PHP backends and APIs for a restaurant ordering system and hotel management delivery. Modeled time‑sensitive operations (orders, deliveries, status updates) using MySQL and queueing mechanisms. Implemented structured logging and basic monitoring to facilitate production debugging and performance tuning.
AI & Big Data Research Scientist (Internship) at Tiankun Artificial Intelligence Research Institute Co., Ltd.
July 31, 2023 - July 31, 2023
Worked on data pipelines and APIs exposing analytics results to web dashboards. Emphasized API design and error handling to enable stable integrations with front-end applications.

Education

MSc at University of Galway
September 1, 2024 - September 1, 2025

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Professional Services, Media & Entertainment