Adrianus Saga Ekakristi

Experience

Telkom Indonesia

Jakarta, Indonesia

December 2021 - November 2022 (Full-Time)
May 2024 - March 2025 (Part-Time)

Data Engineer

Responsible for developing end-to-end data platform with lambda architecture that consists of data ingestion and change data capture (CDC), stream and batch data pipelines, scheduling platform, and query engine. We use several cloud technology such as GCP Pub/Sub, Dataflow, GCS, GKE, and BigQuery. I am also responsible for improving data acquisition and data processing for a government project.

Bukalapak

Jakarta, Indonesia

September 2017 - December 2021

Data Engineer

Responsible for developing, maintaining, monitoring, and innovating our Extract-Transfom-Load (ETL) and stream data processing. Mainly, we are working with big data platform and framework, such as HDFS, Yarn, HBase, Spark, Hive, Kafka, Presto, Cassandra, Airflow, along with Kubernetes, Docker, and many other tools. We are also using several cloud services, such as GCP Dataproc and BigQuery.

Kios Untuk Dagang Online (KUDO)

Jakarta, Indonesia

June 2016 - August 2016

Back-End API Developer Intern

Building application programming (API) interface for Kudo Field Officer Application (FO App) project. FO App is used by Kudo Field Officers to support their job, which are overseeing and supporting Kudo Agents. The API provide all data required for mobile application, web application, and content management system.

Education

Universitas Indonesia

Depok, Indonesia

January 2023 - January 2025

Master

Computer Science

Universitas Indonesia

Depok, Indonesia

July 2013 - July 2017

Undergraduate

Computer Science

Kolese Kanisius Jakarta

Jakarta, Indonesia

2010 - 2013

Senior High School

Science Stream

Research Experience

Finding Questions in Medical Forum Posts Using Sequence Labeling Approach

We propose a sequence labeling method using Conditional Random Fields for question processing. This paper was presented at CICLing 2018. Link: Springer

Corpus Development for Indonesian Consumer-Health Question Answering System

We present a medical question answering corpus consists of question-answer pairs from five Indonesian medical forums. This paper was presented at ICACSIS 2017. Link: IEEE

Medical Question Text Decomposition with Sequence Labeling and Chunking Approach

In this undergraduate thesis, we propose a pipeline for decomposing informal, complex health consultation request text in medical question answering system. Link: CSUI Library

Teaching Experience

Teaching Assistant Coordinator for Information Retrieval

September 2023 - December 2023

Universitas Indonesia

Depok, Indonesia

Teaching Assistant for Programming Foundation

September 2016 - December 2016

Universitas Indonesia

Depok, Indonesia

Teaching Assistant for Declarative Programming Course

January 2016 - June 2016

Universitas Indonesia

Depok, Indonesia

Skills

Programming Language:

Python, Java, Scala, Go, PHP, Assembly, F#

Open-Source Data Technology:

Hadoop, YARN, HBase, Spark, Kafka, Hive, Presto, Ignite, Delta Lake, MinIO, Dask, Ray

Cloud Data Platform:

GCP Dataflow, Dataproc, GCS, CloudSQL, BigQuery, Azure Databricks

AI Tools:

PyTorch, Horovod, Tensorflow, Weka, NLTK, Keras

Provisioning Tools:

Ansible, Terraform

Distributed Orchestration Framework:

Kubernetes, Helm Charts, Mesos, DC/OS

Database:

Cassandra, MySQL, PostgreSQL, MongoDB, Qdrant

Web Framework:

Flask, Laravel, Yii, Django

Version Control System:

Git, SVN

Others:

Airflow, Prometheus, Grafana

Side Projects

Neural Symbolic Approach with Generative Model for Machine Reading Comprehension

In this research project, a neural symbolic approach with an executable symbolic program generator was proposed to answer questions that require discrete reasoning. The T5 model and its variants were used in the experiment to answer the DROP dataset. This work was done as the final project for the Advanced Information Retrieval course.

Forest Wildfire Severity Estimation from Satellite Imagery with Multi-Task Learning Approach

In this research, multi-task learning framework is proposed using land cover segmentation as auxiliary task for estimating forest wildfire severity. This experiment involve various UNet and Visual Transformer models. This research was done as final project for Advanced Spatial Data Analysis course.

Flow-based Network Traffic Classification using Multi-Task Learning Approach

In this project, multi-task learning approach is proposed to classify network traffic class using Hierarchical-CNN and LSTM-CNN model architecture for extended QUIC dataset. This experiment was done as final project for Advanced Computer Networks course.

Multi-Task Learning for Indonesian Part-of-Speech Tagging and Named Entity Recognition

In this research project, we explore various architecture of multi-task learning approach for Indonesian Named Entity Recognition task with Part-of-Speech Tagging as an auxiliary task using pre-trained BERT model. This work was done as final project for Research Methodology course.

Proyeku

A website-based platform to facilitate freelancer, project owner and freelancer seeker. This website was implemented using PHP Laravel framework and was built for main project assignment of Software Project course.

Wireless Camera and Video Recorder built using Raspberry Pi

Photo taking app and video recorder built with Raspberry Pi model B, a standard USB webcam, a wireless adapter, and LED. The features were implemented in Raspbian Wheezy OS. This device was built as final project assignment of System Programming course.

2D Typing Game with Unity Engine: Typing Wizard

2D typing game for Windows PC platform. This game was built using Unity engine. This game was built as the final project assignment of Game Development course at Fasilkom UI and can be accessed at Game Jolt.

Interests

Data Engineering, Data Architecture, Natural Language Processing, Information Retrieval, Transfer Learning, Interpretable and Explainable AI, Neuro-Symbolic AI.