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Machine Learning Engineer Recommendations & Personalization

ShopBack


Job Location:

Shenzhen - China

Monthly Salary: Not provided by the employer
Posted: 19 August 2026 (14 hours ago)
Application Deadline: 16 November 2026
Vacancies: 1 Vacancy

Job Summary

Our Journey
The ShopBack Group is Asia-Pacifics leading shopping rewards and payments platform serving over 20 million active members across 13 2025 the Group continued its global growth with its expansion into North America. Driven by the vision to make every day more rewarding ShopBack is dedicated to saving members money and time and delivering delight every day. The platform also enables merchants and brands to engage with their members in a cost-effective manner. Founded in 2014 ShopBack now powers over US$5.5 billion in annual sales for over 20000 online and in-store partners and has rewarded shoppers with more than US$900 million (over S$1 billion) in Cashback to date. Through its innovative offerings ShopBack continues to create value for both members and merchants. Notably its payment solution ShopBack Pay offers members a convenient and rewarding payment option at checkout.
Your Adventure Ahead
  • Own recommendation and personalization end-to-end: Build and iterate the ML systems behind ShopBacks personalized shopping experience recommendations ranking user modeling and CRM intelligence. Own the change end-to-end dataset training offline eval A/B rollout and be measured on offline and online metrics.

  • Blend classic ML with modern LLM techniques: Apply fine-tuned open-source models embedding models and LLM-based models where they beat classic methods and know when they dont.

  • Ship with evidence: Build evaluation sets and experiment harnesses before shipping models; foster a fast-paced high-iteration experimentation culture (A/B interleaving causal reads).

  • Raise the team: Mentor our ML engineers on modern recommendation and LLM practice; your success includes the teams growth not just your own output.

  • Metrics driven: Understand the business and product metrics behind personalization and drive efforts that move them.

  • Handle ambiguity: Navigate loosely defined problems effectively with or without dedicated Product Manager support.

  • Collaboration: Work closely with product ops and CRM stakeholders to set and achieve optimal outcomes.

Essentials to Succeed
  • Has shipped and iterated recommendation / personalization / ranking or search systems serving millions of users and can walk through what moved the metrics what didnt and why (typically 2 years of industrial ML experience).

  • Strong grounding in retrieval and ranking modeling embeddings and online experimentation.

  • Hands-on fine-tuning of open-source models/LLMs (SFT / LoRA / DPO) applied to ranking personalization or user modeling and the judgment of when classic methods win.

  • Builds evaluation sets and harnesses as a default step not an afterthought.

  • Understands dataset licensing and provenance for commercial use.

  • Solid MLOps fundamentals: data pipelines productionisation monitoring and GPU cost awareness.

  • Comfortable in a batch data stack Spark or equivalent a scheduler(e.g. Airflow) cloud training and serving (e.g. AWS SageMaker). Youd own the model through ingestion training serving monitoring retraining and rollback.

  • Strong Python and PyTorch; familiarity with the Hugging Face ecosystem (transformers / PEFT / TRL) and modern inference stacks (e.g. vLLM) is a plus.

  • Uses agentic AI tools as a daily driver for engineering work and can show how they changed your workflow.

  • Education in a quantitative field such as Computer Science Statistics or Mathematics or equivalent practical depth.

  • Strong desire to solve tough problems with scientific rigour at scale and to get results early and iterate.

ShopBacker Traits
  • Agency - We take ownership and act rather than waiting for permission. When somethings blocking progress we find a way through it and follow through until its done.
  • Judgement- We aim for high-impact decisions not just easy wins and we put the bigger picture ahead of individual interests. That means moving quickly and confidently while staying thoughtful about when a call really matters.
  • Learning Velocity - We pick up new skills fast and let go of old habits just as quickly when something better comes along. We benchmark ourselves against the best and keep raising our own bar.
  • Tenacity - We stay in it when things get hard keeping a level head under pressure. We debate openly before deciding then commit fully and support each other along the way.
Whats in it for ShopBackers
  • Career growth opportunities to take on greater challenges that help you realise your ambitions.
  • Be part of a winning team on a journey to global scale.
  • Competitive compensation based on performance.
  • Candid open and collaborative culture where feedback is valued.
We are committed to protecting your data and ensuring fairness in our recruitment process. We may use artificial intelligence (AI) tools to help our team review applications analyse resumes match candidates to roles generate interview notes and assess responses. These tools assist our recruiters and interviewers and they do not make final hiring decisions. Final hiring decisions are ultimately made by humans. If an assessment is part of your process we may (with your consent) capture screen activity and/or webcam images during the test to help verify test integrity. We do not use AI to infer your emotions or sensitive traits. We process personal data lawfully securely and transparently in line with applicable data-protection laws and our commitment to fair employment. You can ask questions or exercise your rights including to request human review or to challenge an outcome by contacting is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We do not discriminate on the basis of race color religion sexual orientation national origin age disability genetic information veteran status or any other protected status under applicable laws. Join our team and help us make a difference!

Required Experience:

IC


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