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As a passionate Backend Developer, I excel in planning, creating, and maintaining APIs, managing databases, and integrating APIs. My work focuses on delivering high-performance RESTful services and scalable data architectures, with a specialization in AI-enabled backend development using Large Language Models.…

Tsaqifrazin

PRO

Back-End Developer, Full Stack Developer, AI Engineer, +3

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As a passionate Backend Developer, I excel in planning, creating, and maintaining APIs, managing databases, and integrating APIs. My work focuses on delivering high-performance RESTful services and scalable data architectures, with a specialization in AI-enabled backend development using Large Language Models.…

Available to hire

Indonesia

As a passionate Backend Developer, I excel in planning, creating, and maintaining APIs, managing databases, and integrating APIs.

My work focuses on delivering high-performance RESTful services and scalable data architectures, with a specialization in AI-enabled backend development using Large Language Models.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

Indonesian

Fluent

English

Advanced

Work Experience

Backend Engineer

November 1, 2022 - June 1, 2025

Developed RESTful APIs using NestJS, .NET (C#) and Spring Boot across various projects; monitored services with Grafana and Prometheus; implemented MQTT-based stream processing; used PostgreSQL and MongoDB for data management and performance across structured data.

Backend Engineer (Full-time)

June 1, 2022 - August 1, 2022

Developed RESTful APIs using NestJS; implemented WebSocket for real-time chat; integrated with LLMs and AI agents; implemented Retrieval-Augmented Generation (RAG) and text-to-SQL features for natural language database querying.

Backend Engineer (Full-time)

October 1, 2024 - February 1, 2025

Developed cloud-native backend systems on Google Cloud Platform (GCP) using GAE, GKE, and Firestore for scalability and reliability; implemented seamless integrations with payment gateways, food aggregators, and third-party shipping services.

Backend Engineer (Full-time)

June 1, 2025 - Present

Developed RESTful APIs for enterprise apps; designed efficient database schemas; integrated with Impala DB to access data from distributed systems; integrated with external services for client applications.

Backend Software Engineer

November 2, 2022 - June 2, 2025

Developed RESTful APIs using NestJS across multiple projects; built and maintained real-time data pipelines with MQTT; implemented monitoring with Grafana and Prometheus; optimized PostgreSQL and MongoDB queries for performance and scalability.

Backend Engineer (Internship)

June 1, 2022 - August 31, 2022

Developed RESTful APIs using NestJS; implemented WebSocket-based real-time chat functionality; integrated with Large Language Models and AI Agent.

Backend Engineer at Agency

June 1, 2024 - August 31, 2024

Developed cloud-native backend systems on Google Cloud Platform (GCP), using GAE, GKE, and Firestore for scalability and reliability. Implemented cloud-based integrations with payment gateways, food aggregators, and third-party shipping services; worked with Kafka, Redis, MongoDB.

Back-End Engineer (Full-time) at Toyota Motor Manufacturing Indonesia

June 1, 2025 - Present

Engineered high-performance RESTful APIs using Java and ASP.NET to support enterprise applications; developed cloud-native backend systems on GCP (GAE, GKE, Firestore) for scalability and reliability; implemented integrations with payment gateways, food aggregators, and third-party shipping services.