Machine Learning Engineer (Recommendation) - Global E-Commerce

ByteDance; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

ByteDance in Singapore is seeking a highly skilled ML/AI engineer to advance our large-scale recommendation systems for e-commerce and content.

You will optimize models, conduct data analysis, and run experiments to improve diversity, cold-start handling, and performance across global platforms.

The role requires strong programming in C++/Python and experience with big data and deep learning tools. Join a collaborative team and impact scalable production ML deployments.

Qualifications

• Bachelor's degree in Computer Science or related field.
• Strong knowledge of data structures and algorithms with solid problem-solving and programming skills.
• Experience in applied machine learning with common algorithms and deep learning frameworks.
• Experience with recommendation systems components and industry models.
• Proficient in C++ and Python; familiar with Big Data tools and deep learning frameworks.

Responsibilities

• Work on recommendation systems across products, videos, and live streams for e-commerce scenarios across countries.
• Optimize models at massive scale using deep learning, transfer learning, and multi-task learning techniques.
• Conduct data mining and analysis to improve content quality of recommendations.
• Research topics to enhance diversity, discovery, cold-start handling, and high-quality products/creators.
• Develop and productionize scalable ML models and data pipelines; run experiments to test performance.
• Collaborate in a team with statistics, scripting, and programming requirements; work with deployment platforms.

Skills

Strong data structures and algorithms

Problem solving

Communication skills

Teamwork

C++

Python

Education

Bachelor's degree in Computer Science or related field

Tools

Hive/Spark/MapReduce

TensorFlow/PyTorch

Job description

Responsibilities

About the team

Our team works on large-scale recommendation systems for various offerings under ByteDance and its affiliates, focusing on developing recommendation algorithms/models/strategies. We are committed to developing cutting‑edge solutions for e‑commerce recommendation systems.

• Work on recommendation systems, involving contents of various forms ranging from products, short videos to live streams, with each unified recommendation model fulfilling heterogeneous E-commerce scenarios/goals across multiple countries.
• Optimize e‑commerce recommendation models at massive scales, using deep learning/transfer learning/multi‑task learning techniques.
• Data mining and analysis to improve the quality of recommended contents.
• Conduct research on various topics, which aim to optimize content recommendation circulation, ranging from ensuring diversity and new discovery in recommendation contents, to cold‑start problem for new users/items and discovery of high‑quality products/live streamers.
• Develop innovative and state‑of‑the‑art e‑commerce models and algorithms
• Support the production of scalable and optimised AI/machine learning (ML) models
• Focus on building algorithms for the extraction, transformation and loading of large volumes of realtime, unstructured data to deploy AI/ML solutions from theoretical data science models
• Run experiments to test the performance of deployed models, and identifies and resolves bugs that arise in the process
• Work in a team setting and apply knowledge in statistics, scripting and programming languages required by the firm.
• Work with the relevant software platforms in which the models are deployed

Qualifications

Minimum Qualifications

• Bachelor's degree in Computer Science or related fields.
• Strong in data structures and algorithms, with excellent problem-solving ability and programming skills
• Experience in applied machine learning, familiar with one or more of the algorithms such as Collaborative Filtering, Matrix Factorization, Factorization Machines, Word2vec, Logistic Regression, Gradient Boosting Trees, Deep Neural Networks etc.
• Experience in working with main components of recommendation systems(recall, sort, reranking, cold-start problem), with good understanding of mainstream recommendation models used in the industry
• Experience in C++ and Python; at least one of the Big Data tools (For eg. Hive sql/Spark/Mapreduce; at least one of the Deep Learning tools(For eg. Tensorflow/Pytorch)
• Possess strong communication skills, positive mindset, good teamwork skills, and eagerness to learn/implement new technology and experiment

Preferred Qualifications

• Experience in personalized recommendation, online advertising, information retrieval or related fields.
• Publications at KDD、NeurIPS、WWW、SIGIR、WSDM、CIKM、ICLR、ICML、IJCAI、AAAI、RecSys and related conferences
• Excellent performance in data mining, machine learning, or ACM-ICPC/NOI/IOI competitions
• Developed widely-recognized machine learning project(s) on github or personal webpage

About Us

Founded in 2012, ByteDance's mission is to inspire creativity and enrich life. With a suite of more than a dozen products, including TikTok, Lemon8, CapCut and Pico as well as platforms specific to the China market, including Toutiao, Douyin, and Xigua, ByteDance has made it easier and more fun for people to connect with, consume, and create content.

Why Join ByteDance

Inspiring creativity is at the core of ByteDance's mission. Our innovative products are built to help people authentically express themselves, discover and connect – and our global, diverse teams make that possible. Together, we create value for our communities, inspire creativity and enrich life - a mission we work towards every day. As ByteDancers, we strive to do great things with great people. We lead with curiosity, humility, and a desire to make impact in a rapidly growing tech company. By constantly iterating and fostering an "Always Day 1" mindset, we achieve meaningful breakthroughs for ourselves, our Company, and our users. When we create and grow together, the possibilities are limitless. Join us.

Diversity & Inclusion

ByteDance is committed to creating an inclusive space where employees are valued for their skills, experiences, and unique perspectives. Our platform connects people from across the globe and so does our workplace. At ByteDance, our mission is to inspire creativity and enrich life. To achieve that goal, we are committed to celebrating our diverse voices and to creating an environment that reflects the many communities we reach. We are passionate about this and hope you are too.