$ whoami

Sarl James Sebios

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Senior PHP Developer with 11+ years building secure, scalable backend systems and full-stack applications for enterprise.

linkedin.com/in/ssarljames Leyte, Philippines

01 / about

Professional Summary

Senior PHP Developer with 11+ years of experience in full-stack web and mobile development, specializing in the PHP/Laravel and Symfony ecosystems. Brings a security-first engineering mindset — building RESTful APIs and backend systems for enterprise-grade platforms serving 1M+ users, with careful attention to data privacy and protection across monolithic and microservice architectures.

02 / skills

Technical Skills

Backend

PHPLaravelSymfonyLivewireNode.js (NestJS)Java

Frontend

JavaScriptAngularIonicjQueryPWABootstrapTypeScriptReactVue.js

Databases

MySQLPostgreSQLRedis

DevOps & Tools

GitDockerLinux ServerCI/CDWebSocket

Practices

SOLID PrinciplesClean CodeMicroservicesAgile/ScrumCode ReviewSecurity-First SDLCMentorship

Infrastructure / Cloud

AWSDigitalOceanCloudflare

AI Tools

CopilotClaude Code

03 / experience

Work Experience

Software Engineer (Remote)

Jan 2023 – Present (3 yrs 5 mos)

Built and maintained backend features for a cloud-based HRIS platform serving 1M+ enterprise users using PHP/Symfony, with a focus on performance and security.
Implemented RBAC, secure storage, and access controls for sensitive HRIS data in alignment with ISO/IEC 27001:2022.
Developed across monolithic and microservice architectures (Symfony, React/TypeScript, Node.js, MySQL, PostgreSQL), following SOLID principles and clean code standards.
Contributed key architectural decisions and legacy modernization work for the LMS module, improving scalability and maintainability across the platform's learning management features.
Conducted pull request reviews and contributed to Scrum ceremonies, supporting code quality and team alignment.
Leveraged AI-assisted tools for planning and in-depth code reviews, accelerating delivery while maintaining quality and security standards.

Senior Full-Stack Developer (Remote)

Jun 2020 – Jan 2023 (2 yrs 7 mos)

Led systems design and full-cycle development of web and mobile applications for multiple SaaS products using Laravel (PHP), Ionic, and MySQL; architected and maintained RESTful APIs serving cross-platform client applications.
Managed application deployment and server configuration via Plesk on Linux; contributed to WordPress customization for client-facing portals.
Mentored junior developers through code reviews, technical guidance, and documentation of development best practices.

Part-time Programming Instructor

Jun 2018 – Jun 2025 (7 yrs)

Developed course materials and taught programming fundamentals (HTML, CSS, JavaScript) to senior high school students; guided hands-on project-based learning.
Mentored aspiring developers, fostering interest in technology careers and preparing students for college entrance exams and industry certifications.

Computer Programmer

Nov 2014 – Mar 2017 (2 yrs 4 mos)

Designed and developed in-house government software, including a Document Tracking System, Employee Attendance System, and Payroll System, using Laravel, AngularJS, and MySQL.
Improved operational efficiency by digitizing manual processes, reducing document turnaround time by 40% and streamlining payroll accuracy for 500+ employees.
Enhanced transparency and accountability in government workflows through secure, auditable systems aligned with public sector compliance standards.
Delivered requirements gathering, basic design, and full-cycle development through deployment on internal Linux infrastructure.

04 / projects

Selected Work

Highlights drawn from professional experience — case-study details available on request.

Learning Management System

LMS Modernization & Architecture

Contributed key architectural decisions and legacy modernization work for an enterprise LMS module, improving scalability and maintainability for 1M+ platform users, in close collaboration with the lead engineer and architect.

PHPSymfonyMicroservicesNestJSReactAWS S3

SaaS · Cross-Platform

Multi-Product SaaS Suite

System design and full-cycle development of web and mobile SaaS products with RESTful APIs for cross-platform clients.

LaravelIonic (Android/iOS)MySQLLivewireLaravel Tenancy

Government / Public Sector

Government Digitization Suite

Document Tracking, Employee Attendance, and Payroll systems.

LaravelAngularJSMySQLJasper Report

05 / education & certifications

Education & Certifications

Education

B.S. Computer Science — Cum Laude

Visayas State University, Leyte, Philippines

2017 – 2021

Software Development Certificate

E2PS, Leyte, Philippines

2011 – 2012

Certifications

Computer Programming Proficiency (2024)

Dept. of Information and Communications Technology, PH

PhilNITS IT Professional — Level 2 (2022)

Equivalent to ITPEC international standard

Civil Service Professional Eligibility (2016)

Civil Service Commission, Philippines

$ contact --sarl

Let's work together

Open to senior backend, full-stack, and technical mentorship opportunities.

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