Carljohn Timbal

CT

Looking for a job

Carljohn Timbal

@carljohntimbal

Backend developer at Loadmanna Inc. who implemented an OAuth2 identity server and built digital wallet services with PostgreSQL.

What I'm looking for

I'm seeking an entry-level Backend or Software Developer role where I can contribute to reliable and scalable web applications.

At Loadmanna Inc., I implemented a centralized identity and authentication service supporting OAuth2 flows using C#, ASP.NET Core, and Entity Framework Core. I designed user registration, login, token issuance, and role-based access control.

I also built RESTful services for digital wallet balances, deposits, withdrawals, and transaction history using PostgreSQL. I integrated wallet operations with the Identity Server and implemented transaction logging and validation to help maintain balance consistency.

Experience

Work history, roles, and key accomplishments

LI

IT Intern / Backend Developer

Loadmanna Inc.

Jan 2026 - Aug 2026 (7 months)

Implemented a centralized identity and authentication service supporting OAuth2 flows using C#, ASP.NET Core, and Entity Framework Core. Built RESTful backend services for digital wallet management with PostgreSQL, including transaction logging and validation to ensure balance consistency.

C#ASP.NET Core Entity Framework Core OAuth OpenID Connect RBAC PostgreSQL REST APIs Transaction Management

Education

Degrees, certifications, and relevant coursework

TE

TESDA

NC II, Computer Systems Servicing

2026 - 2026

Completed Computer Systems Servicing NC II certification.

AC

Access Computer College

Bachelor of Science, Information Technology

2023 - 2026

Grade: Cum Laude

Activities and societies: Relevant Coursework: Data Structures & Algorithms, Database Systems, Web Development, Software Engineering, Networking

Pursued a Bachelor of Science in Information Technology, graduating with Cum Laude honors.

Tech stack

Software and tools used professionally

GitHub

MySQL

PostgreSQL

ASP.NET Core

Bootstrap

Python

Java

C#

Blazor

Visual Studio Code

OAuth2

Git

XAMPP

SQL

Entity Framework Core

Availability

Looking for a job

Location

Philippines

Authorized to work in

Salary expectations

80k+ PHP

Social media

Job categories

Backend Engineer Software Developer

Skills

Backend Development OAuth OpenID Connect RBAC REST APIs Database Transactions Java Python C#SQL ASP.NET Core Entity Framework Core Blazor HTML CSS

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