Welcome to my portfolio!

Hey folks, I'm
Yahya Firdaus a Software Engineer a Backend Developer


Bachelor of Computer Science from Universitas Pendidikan Indonesia with strong expertise in Back End development. Skilled in PHP, Python, Java, JavaScript, Go, and C#, with experience in frameworks such as Laravel, Echo, Next.js, ASP.NET, Django, and Flask. Interests include NLP and Data Engineering. Nearly 5 years of experience in the areas mentioned above. Adaptable team player with a passion for continuous learning and growth.

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Skills

Python

Django, Flask

C#

ASP .NET

Golang

Echo

PHP

Laravel, CodeIgniter

Java

Android Studio, Spring Boot

Javascript

Next.JS, React.JS

Kotlin

Android Studio

Chatbot

platform.kata.ai

NLP

Model SR, Model NLU, Text-To-Speech

Database

PostgreSQL, SQL Server, MySQL, MongoDB, Stored Procedures

Data Engineering

Data Warehouse, Tableau, GCP

Things I have developed

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SAM LCM / PTEN - Backend Developer (Data)

Company: Delman.io
Period: May 2025 – Sep 2025
Role: Backend Developer (Data) | Delman Data Lab
Tech: Python (Flask), PostgreSQL, Tableau, GCP
Developed documentation and gained comprehensive understanding of database structures. Processed data within the data warehouse and prepared it for visualization in Tableau. Additionally, created SIT (System Integration Testing) documentation to support project workflows.

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Binus - Backend Developer (Website)

Company: Delman.io
Period: May 2025 – Sep 2025
Role: Backend Developer (Website) | Python (Flask), Cursor
Performed website maintenance and managed database operations. Identified and resolved existing errors to ensure system reliability. Produced technical documentation to support ongoing development and operational tasks.

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LMS Allianz

Company: PT Netpolitan
Period: May 2024 – May 2025
Role: Django Developer
Tech: Python (Django), PostgreSQL, Java (Spring Boot), Docker, GCP
Developed and maintained a comprehensive Learning Management System for Allianz, delivering robust web-based solutions to support their training infrastructure. Responsibilities included ongoing website maintenance, implementing custom features based on client requirements, and developing integration systems.

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LMS Permata

Company: PT Netpolitan
Period: May 2024 – May 2025
Role: Django Developer
Tech: Python (Django), PostgreSQL, Docker
Led the development and maintenance of a Learning Management System for Permata, focusing on delivering high-quality web applications that met specific client needs. Key responsibilities encompassed website maintenance, feature development, deployment management, and comprehensive documentation creation.

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LMS CIMB

Company: PT Netpolitan
Period: May 2024 – May 2025
Role: Django Developer
Tech: Python (Django), PostgreSQL, Google Colab, GCP, Docker
Spearheaded the development of a Learning Management System for CIMB, implementing advanced features and managing complex data migration processes. Delivered comprehensive web solutions including website maintenance, new feature development, automated reporting systems, and thorough documentation.

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LMS Bina Pertiwi

Company: PT Netpolitan
Period: May 2024 – May 2025
Role: Django Developer
Tech: Python (Django), PostgreSQL, Docker
Developed and maintained a Learning Management System for Bina Pertiwi, ensuring seamless functionality and continuous improvement of web-based learning solutions. Responsibilities included website maintenance, new feature development, deployment management, and creation of automated systems with comprehensive documentation.

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LMS Hana Bank

Company: PT Netpolitan
Period: May 2024 – May 2025
Role: Django Developer
Tech: Python (Django), PostgreSQL, Docker
Delivered a comprehensive Learning Management System for Hana Bank, managing complex development processes including website maintenance, new feature implementation, and data migration. Successfully created automated reporting systems and maintained detailed documentation throughout the project lifecycle.

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Ezmicbus / APL - Microservice Architecture

Company: Radya Digital
Period: Jan 2022 – Sep 2022
Role: Web Developer
Tech: C# (ASP .NET), SQL Server, Ocelot, Docker, Kubernetes
Transformed a monolithic website into a microservice architecture for APL, delivering scalable and maintainable web solutions. Responsibilities included creating required APIs, designing and implementing new database structures, and managing deployment processes. Successfully utilized modern technologies including C# (ASP .NET), SQL Server, Ocelot API Gateway, Docker, and Kubernetes.

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Chatbot Sales Frissian Flag

Company: Radya Digital
Period: Sep 2022 – Apr 2023
Role: Chatbot Developer
Tech: XAML (platform.kata.ai), C# (ASP .NET), SQL Server, Qiscus
Developed and deployed an intelligent chatbot solution for Frissian Flag's sales operations, creating an interactive customer engagement platform. Key responsibilities included chatbot development, admin page creation, database structure design, comprehensive documentation, and ongoing deployment and maintenance.

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Chatbot Mitsubishi

Company: Radya Digital
Period: Apr 2023 – Oct 2023
Role: Chatbot Developer
Tech: XAML (platform.kata.ai), C# (ASP .NET), SQL Server, Qiscus
Maintained and enhanced chatbot systems for Mitsubishi, ensuring continuous functionality and optimal performance of conversational AI solutions. Responsibilities encompassed chatbot maintenance, admin page management, technical documentation creation, and deployment processes.

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Website TNI

Company: PT. Ciheul Technologies
Period: Feb 2021 – Jan 2022
Role: Software Engineer
Tech: Python (Django), PostgreSQL
Contributed to the development and maintenance of the TNI website, ensuring its operational efficiency and functionality. Responsibilities included performing ongoing website maintenance, initiating new projects using existing templates, creating comprehensive documentation, and managing deployment processes.

Speech Recognition and Text to Speech

Company: NLP LCI
Period: Jan 2021 – Feb 2021
Role: NLP Engineer
Tech: Python (Flask), SQLite, CMUSphinx
Conducted comprehensive research related to Speech Recognition and developed robust models utilizing CMUSphinx. Implemented Text to Speech functionalities and seamlessly integrated the developed models into a functional website. Successfully managed the deployment process to ensure the system's operational readiness.

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Konsultasi Dokter / Indihealth, LintasArta

Company: SCCIC ITB, Indihealth
Period: Sep 2020 – Nov 2020
Role: Mobile Developer
Tech: Kotlin (Android Studio)
Developed and maintained a mobile application for doctor consultation services, ensuring seamless functionality and user experience. Responsibilities included application maintenance and creating comprehensive API documentation to support system integration. Utilized Kotlin with Android Studio to deliver robust mobile solutions for healthcare consultation platforms.

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Kartu Imunisasi Digital / PT Bio Farma

Company: Bio Farma
Period: Sep 2019 – Feb 2020
Role: Web Developer
Tech: C# (ASP.NET), Microsoft SQL Server, Stored Procedure
Developed a comprehensive digital immunization card system for PT Bio Farma, delivering robust web-based solutions to support healthcare digitization initiatives. Responsibilities included creating detailed technical documentation, designing and implementing database structures, developing both user and admin websites, implementing stored procedures for data management, and managing deployment processes.

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Kreatif.ai

Project Type: Personal Project (2025)
Tech: React.js, AI Models
AI-based website developed using React.js incorporating various AI models. Added new features and performed bug fixes for the AI-based website kreatif.ai.

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Django Project - Report Page

Project Type: Personal Project (2025)
Tech: Python (Django), PostgreSQL
Developed the report page and website maintenance menu for the website under development using Python Django framework and PostgreSQL database.

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Android Application

Project Type: Personal Project (2024)
Tech: Java (Android Studio)
Developed an Android application using Android Studio with Java programming language for a Master's student project.

Experiences

2025

Backend DeveloperDelman.io

Backend Developer (Data) - Developed documentation and gained comprehensive understanding of database structures. Processed data within the data warehouse and prepared it for visualization in Tableau. Backend Developer (Website) - Performed website maintenance and managed database operations using Python (Flask). (05/2025-09/2025)

2024

Django DeveloperPT Netpolitan

Developed and maintained comprehensive Learning Management Systems for multiple clients including Allianz, Permata, CIMB, Bina Pertiwi, and Hana Bank using Python (Django), PostgreSQL, Docker, and GCP. (05/2024-05/2025)

2022

Web DeveloperRadya Digital

Transformed monolithic website into microservice architecture using C# (ASP .NET), SQL Server, Ocelot, Docker, and Kubernetes. Also developed chatbot solutions using platform.kata.ai. (01/2022-10/2023)

2021

Software EngineerPT. Ciheul Technologies

Contributed to the development and maintenance of website using Python (Django) and PostgreSQL. (02/2021-01/2022)

2021

NLP EngineerNLP LCI

Conducted comprehensive research related to Speech Recognition and developed robust models utilizing CMUSphinx. Implemented Text to Speech functionalities. (01/2021-02/2021)

2020

Mobile DeveloperSCCIC ITB, Indihealth

Developed and maintained mobile application for doctor consultation services using Kotlin (Android Studio). (09/2020-11/2020)

2019

Web DeveloperPT Bio Farma

Developed a comprehensive digital immunization card system using C# (ASP.NET) and Microsoft SQL Server. (09/2019-02/2020)

Educations

2020

Bachelor of Computer Science2016-2020

Universitas Pendidikan Indonesia - GPA: 3.70/4.00

2016

IPA2013-2016

SMAN 13 Bandung

Interested to work together? Let's talk