I have extensive experience in building full stack applications that scale.

Ralph Gabriel Mariano

I have extensive experience in building full stack applications that scale.

Available to hire

I have extensive experience in building full stack applications that scale.

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
See more

Language

English
Advanced

Work Experience

Full Stack C# Developer at JP Morgan Chase
November 1, 2024 - Present
Led support and development for critical billing systems, managing and optimizing hundreds of microservices and stored procedures to ensure high availability and performance. Resolved production issues causing downtime and drove improved efficiency. Collaborated with global teams using Jira, ServiceNow, Bitbucket, and Confluence for issue tracking, deployment, and documentation.
Full Stack Developer at PwC Manila
July 1, 2023 - October 1, 2025
Spearheaded KPI Generation and Consolidation tool development using Angular, .NET, and SQL; streamlined manual processes and improved company-wide efficiency. Led frontend and backend development efforts to drive KPI tool success. Reworked training project into a functional tool adopted by the Application Development Services team. Led the HM0 Renewal app development for Human Capital, automating employee dependent management using Angular and .NET, improving accuracy and saving time. Collaborated with cross-functional teams to ensure seamless integration and ongoing system enhancements.
Associate Software Engineer at Accenture
January 1, 2023 - June 1, 2023
L2 Support specialist focusing on SAP MM PO, OneBuy, and Zycus Purchasing, ensuring smooth procurement operations and timely issue resolution. Developed automation scripts to streamline processes and reduce manual workload.
Full Stack Web Developer at Freelance
January 1, 2020 - Present
Delivered end-to-end web and mobile solutions for diverse clients by developing responsive front-ends using React, Angular, and Next.js, and building scalable backends with .NET, Node.js, and SQL/NoSQL databases. Collaborated directly with clients to gather requirements and managed full project lifecycles from planning to deployment on AWS, Azure, and Google Cloud to ensure quality and timely delivery.
Full Stack Web Developer (Intern) at Pamantasan ng Lungsod ng Valenzuela
January 1, 2022 - June 1, 2022
Designed and developed the Faculty Load System web app using Angular and Firestore to streamline the creation of faculty loads; implemented automated checks and validation for submitted loads by chairpersons, improving accuracy and transparency.

Education

Bachelor of Science in Information Technology at Pamantasan ng Lungsod ng Valenzuela
January 1, 2018 - January 1, 2022

Qualifications

PSM I - Professional Scrum Master I
January 11, 2030 - June 6, 2026
AWS Certified Cloud Practitioner
January 11, 2030 - June 6, 2026
Azure Fundamentals (AZ-900)
January 11, 2030 - June 6, 2026
AI Fundamentals (AI-900)
January 11, 2030 - June 6, 2026
DP-900 - Microsoft Azure Data Fundamentals
January 11, 2030 - June 6, 2026

Industry Experience

Software & Internet, Professional Services, Financial Services, Media & Entertainment

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
See more