Lead Data Scientist - LLM Platform (Artificial Intelligence/AI)

GoPay; Singapore; On-site; SGD 180,000 - 240,000; Full time

Job summary

GoTo Group is seeking a Lead Data Scientist to shape multilingual LLMs for Bahasa Indonesia and regional languages. You will build datasets, drive continual pretraining, fine-tuning, and alignment, and partner with product and engineering to deploy safe, scalable LLM features for millions of users.

You will lead data pipelines, experiment with SFT/RLHF/DPO, and advance safety guardrails while staying current with AI research. Strong collaboration across teams is essential in this senior role.

Qualifications

Responsibilities

• Design and build datasets for multilingual LLM training and alignment
• Lead pretraining, supervised fine-tuning, and RLHF/ DPO workflows
• Collaborate with product and engineering to ship LLM-powered features
• Develop scalable data processing and evaluation pipelines
• Advance safety alignment and culturally appropriate model behavior
• Stay updated with frontier AI research and methods

Skills

Python

Deep learning

NLP

Cloud platforms

Model training

Data preprocessing

Communication

Education

Master’s or PhD in CS/DS/AI

Tools

PyTorch

TensorFlow

Job description

About the Role

We are building a multilingual Large Language Model (LLM) tailored for Bahasa Indonesia and regional languages. We are looking for a passionate Lead Data Scientist to help shape the future of open and inclusive AI for Indonesia, as well as play a pivotal role in identifying impactful AI use cases. As a Lead Data Scientist working on LLMs, you will design and build high-quality datasets, advanced model pre-training, fine-tuning, and alignment techniques, and collaborate closely with product and engineering teams to ship safe, reliable LLM-powered features to millions of users. This role offers the opportunity to drive innovation, solve critical business challenges, and shape the future of AI-driven solutions at GoTo Group.

What You Will Do

• Work with large-scale multilingual corpora, including text, audio, and image modalities
• Build high-quality datasets for both continual pretraining,post-training (SFT, RLHF, DPO), and benchmark evaluation
• Contribute to the training and scaling of multilingual LLMs – from continual pretraining to supervised fine-tuning and alignment.
• Implement state of the art methods and research for efficient and scalable operations.
• Implement and improve safety alignment and guardrail systems to ensure responsible and culturally appropriate model behavior.
• Collaborate closely with business/product, engineers to deploy production-gradeLLM-powered solutions.
• Stay current with advancements in AI technologies. Frontier models, training methodologies etc

What You Will Need

• 7+ years of experience in deep learning, nlp, computer vision, voice.
• Proficient in data preprocessing, model training, evaluation, and optimisation.
• Practical experience in applying deep learning to solve real business problems, with models successfully deployed and used in production environments.
• Proficient with Python and deep learning frameworks such as PyTorch or Tensorflow.
• Experience with cloud platforms like Alicloud, GCP or AWS.
• Strong communication skills to understand business needs and effectively convey analytical solutions.
• Ability to write clear and concise technical documentation.A Master’s or PhD in Computer Science, Data Science, AI, or a related field.

About the Team

The AI-LLM team is on a mission to build the most capable and culturally aligned multilingual LLMs for Indonesia. At GoTo Group, the AI-LLM team is at the forefront of developing state-of-the-art language models. We are building foundational AI models that understand and generate Bahasa Indonesia and regional languages – empowering more inclusive technology.

We work on everything from continual pretraining of large-scale LLMs to alignment and safety fine-tuning, using both structured and unstructured data from diverse sources. Our projects span core model development, dataset curation, safety systems, and real-world deployment in consumer and enterprise applications. Our team brings together members with diverse technical and cultural backgrounds, bringing expertise in machine learning and local languages.

About GoTo Group

GoTo is the largest digital ecosystem in Indonesia. GoTo's mission is 'empower progress' by offering technology infrastructure and solutions that help everyone to access and thrive in the digital economy.

The GoTo ecosystem provides a wide range of services, including mobility, delivery, payments, financial services, and technology solutions for merchants. The ecosystem also provides e-commerce services through Tokopedia and banking services through its partnership with Bank Jago.

About Gojek

Gojek is Southeast Asia’s leading on-demand platform and pioneer of the multi-service ecosystem with over 2.5 million driver partners across the regions offering a wide range of services such as transportation, food delivery, logistics and more. With its mission to create impact at scale, Gojek is committed to resolving consumer problems and raising standards of living by connecting consumers to the best providers of goods and services in the market.

About GoTo Financial

GoTo Financial accelerates financial inclusion through its leading financial services and merchants solutions. Its consumer services include GoPay and GoPayLater and serve businesses of all sizes through Midtrans, Moka, GoBiz Plus, GoBiz, and Selly. With its trusted and inclusive ecosystem of products, GoTo Financial is open to new growth opportunities and aims to empower everyone to Make It Happen, Make It Together, Make It Last.

GoTo and its business units, including Gojek and GoToFinancial ("GoTo") only post job opportunities on our official channels onour respective company websites and on LinkedIn. GoTo is not liable for any job postings or job offers that did not originate from us. You should conduct your own due diligence to prevent being victims of any fake job scams, if they did not originate from GoTo's official recruitment channels.