Hi there, I’m

Safari

Hi there

My name is Abdul Rahman Safari. People usually call me Safari. I’m a backend heavy full stack software engineer and also a 1x engineer . I have a passion for all things related to STEM (Science, Technology, Engineering and Mathematics), from software engineering & machine learning to data scraping and automation.

In addition to my love of STEM related stuff, I am also very interested in education, history, economics and politics.

In my free time, i like to read books, watching macroeconomic news, and playing with my little daughter

Below are details of my experience throughout my career as a software engineer with arround 7+ years of coding experience.

Work Experience

PT. Multidaya Teknologi Nusantara (eFishery)

Senior Backend Engineer

2022 Jul - 2024 Oct

• Developed Backend Services for the majority of Efishery applications utilizing Golang, the Gin Framework, Hexagonal Architecture, Postgres, and Nomad.
• Created API Documentation using Swagger.
• Conducted OLAP to construct an engineering metrics dashboard implemented in Metabase.
• Migrated ETL and ELT processes from Apache Airflow to Airbyte.
• Developed and implemented integration tests and unit tests to achieve 80% coverage of business logic.
• Implemented Loki and Grafana for log monitoring of the Backend Services at Efishery.
• Transitioned from ElasticSearch, Logstash, and Kibana to Loki and Grafana for log monitoring.
• Integrated distributed tracing across services using Jaeger to facilitate debugging.
• Established a RabbitMQ Dead Letter Exchange to simplify debugging of problematic messages from backend services.
• Leveraged RabbitMQ as an asynchronous communication channel between backend services at Efishery.
• Developed a Go library for logging to set a standard for logging across most backend services at Efishery.
• Created a Go library for database transactions to minimize data inconsistencies.
• Monitored and ensured the code quality of every pull request from the backend team.
• Mentored junior and mid-level backend engineers to help them advance to a senior level.
• Utilized gRPC for internal service-to-service communication within the backend ecosystem at Efishery.

PT. Kaldu Sari Nabati (Nabati)

Senior Backend Engineer

2020 Sep - 2022 Jun

• Developed the Discount Engine Module (Nadine) to replace the existing Discount Engine in SAP using Golang and the Fiber Framework, with an emphasis on Hexagonal Architecture.
• Engineered the Sales Distribution Module (NDS) as a substitute for the Sales Distribution in SAP using Golang and the FastHTTP Framework, incorporating Hexagonal Architecture and Concurrency.
• Created the Master Data Config Module integrated with SAP using NodeJS and Express.
• Leveraged RabbitMQ as an asynchronous communication channel between backend services.
• Designed and implemented comprehensive Test Cases to ensure full logic coverage for the Discount Engine.
• Developed and executed Integration Tests to validate that sales orders received the correct discounts.

PT. Exaditama Teknologi Kreativa

Lead Back End & DevOps Engineer

2019 Oct - 2020 Aug

• Led and managed a team of 3 backend engineer and 2 devops engineer.
• Utilized Trello as the task management tool for tracking and managing tasks.
• Executed CI/CD scripting for every service built with Jenkins to streamline developer integration and automate server deployments.
• Segmented the Deployment Strategy into Development, Staging, and Production environments for the company's products.
• Managed an API Gateway using Nginx to simplify endpoint access for the Front-End.
• Implemented clustering, auto versioning, and load balancing on production servers with Kubernetes.
• Engineered a microservice REST API utilizing Lumen, NodeJS, Go, Redis, MongoDB, MySQL, and RabbitMQ.
• Transformed the monolithic architecture into a microservices architecture and scripted the deployment boilerplate for each framework within the developed products.
• Developed scripts for scheduled database backups using Bash Scripting and NodeJS to Amazon S3.
• Constructed a recommendation system that employs Google Text-To-Speech, Natural Language Processing and text classification via the Naive Bayes Algorithm.
• Designed a REST API for trading applications using Golang and the Fiber Framework, leveraging RabbitMQ as the message broker for internal service communication.

PT. Gigaming Intermedia Solusindo

Back End Engineer

2019 Aug - 2019 Oct

• Developed a containerized service leveraging Docker
• Engineered a microservice REST API utilizing .Net Core, NodeJS, Redis, MongoDB, MsSql, RabbitMQ

Project Experience

EveryOneAsia2024

Project Lead

2024

• Led and managed a team consisting of 2 Backend Engineers, 2 Web Frontend engineers, 1 UI/UX Designer, 1 Flutter Developer, and 1 QA.
• Ensured the project progressed according to the agreed Statement of Work (SOW).
• Integrated backend services with two payment gateways, Doku and Midtrans.
• Handled livestreaming on mobile apps with 10,000 concurrent users.
• Developed a participant management system using QR Codes for identity verification.
• Conducted integration tests to ensure feature functionality.
• Built backend services using Golang & Fiber.
• Developed the Admin Panel and Registration Page frontend using React JS.
• Created a real-time queue system for food ordering, displayed on TVs at each food stand using React JS.
• Implemented Minio as the object storage solution.
• Utilized Trello as the project management tool for tracking and managing tasks.

everyoneasia2024.com

admin.everyoneasia2024.com

registration.everyoneasia2024.com

Pelita Air

Freelance Full Stack Developer

2022 - Now

• Developed the frontend interface for skyops-pas.id using ReactJS and Zustand for state management.
• Extracted data from AIMS using SOAP, transformed it with Golang, and displayed it on the frontend interface.
• Extracted data from AIMS using SOAP, transformed it into a Google Sheets document using Golang.
• Deployed the entire codebase on a VPS using Docker and Nginx as a reverse proxy.
• Implemented CI/CD pipeline using Jenkins.

skyops-pas.id

Telkom Indonesia

Backend Developer (Project Based 3 Month Contract)

2022

• Developed backend services for the TravelAja application using NodeJS.
• Built backend services for the TravelAja application utilizing Laravel Lumen.

MulaiDisini

Freelance Web Developer

2019

• Developed REST API using Lumen.
• Developed Frontend interface using Blade from Laravel.
• Deployed entire project to VPS in Amazon EC2 Server.
• Utilized Nginx as a reverse proxy.

Dorenmi

Freelance Web Developer

2019

• Developed REST API using Lumen.
• Developed Frontend interface using Blade from Laravel.
• Utilized Midtrans as a payment gateway for this project.
• Deployed entire project to VPS in Amazon EC2 Server.
• Utilized Nginx as a reverse proxy.

Telemedicine Realtime Arrhythmia Detection System Research

Researcher

2017 - 2019

• Developed frontend web interface using Laravel Blade and Plotly.js to monitor data from ESP8266 in realtime using Mosquitto Protocol.
• Created a realtime notification web interface to notify machine learning feedback process.
• Developed a feature extraction method employing time domain features and wavelet decomposition to enhance detection model accuracy.
• Created a machine learning model using KNN algorithm and Artificial Neural Network for heart disease detection.
• Deployed MQTT, PHP and MySQL on Amazon EC2 Server.

Contact

Reach out on LinkedIn or WhatsApp

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