About The Role

This role will build and scale robust data infrastructure to seamlessly ingest, process, and model real-world health data across consumer and B2B platforms. Ensure high data quality, integrity, and compliance, enabling accurate clinical insights and trustworthy partner reporting and empower proprietary AI engines and product analytics teams with fresh, governed data feeds to drive personalized user engagement and measurable health outcomes.

What You’ll Do

Data Integration & Engineering

• Build and maintain data pipelines connecting operational databases (Firestore, PostgreSQL), mobile apps, WhatsApp, and third-party tools (Adjust, CleverTap) to unified data models.

• Design scalable data models for efficient business and product consumption.

• Adapt analytics pipelines for new product features and updates.

• Maintain partner integration APIs (hospitals, pharmacies, insurers).

• Implement cost-effective analytics pipelines and storage on GCP.

Data Governance & Quality

• Ensure consistency between operational and analytical data.

• Develop governance guidelines to help engineering create maintainable data structures.

• Keep data glossaries, schemas, and naming conventions up to date.

• Implement automated tests to ensure upstream data quality.

• Resolve tracking inconsistencies to ensure accurate product data.

• Ensure deployability using version control and automation tools.

Client & Stakeholder Support

• Liaise with product and engineering teams to ensure operational data accuracy in analytics systems.

• Help product teams design and maintain event tagging for continuous product improvement.

• Support AI product teams (AI Coach, Elfie IO) with governed, fresh data feeds.

Data Policy & Security

• Maintain strong knowledge of data compliance and policies.

• Partner with Security and Compliance to meet regulatory and industry standards.

• Implement data security best practices, including anonymization and k-anonymity thresholds for partner exports.

What You’ll Need

General requirements

• 5+ years of experience in a Data Engineer role or relevant.

• Excellent communication skills in English: clear, synthetic, precise, engaging.

• Excellent business-value mindset: prioritise and communicate the business value of each analysis in an intelligible manner for non-expert stakeholders.

• Focused on details while able to understand the overall picture and the meaning of consolidated data.

• Experience working across multiple cultures, countries, and ways of working.

Technical requirements

• Expert in SQL, including complex queries in an OLAP engine (ClickHouse, BigQuery, or similar).

• Expert in any DataFrame API framework - Polars (most preferred), Pandas, Spark, PyArrow …

• Proven experience building streaming and batch processing data pipelines.

• Proven experience in data modelling for both SQL and NoSQL databases.

• Experience with dbt for transformation (staging, incremental models, testing).

• Experience with at least one orchestration tool (Dagster, Airflow, Prefect).

• Familiar with GCP data solutions: BigQuery, Firestore, Looker (Data Studio), GA, IAM.

• Python for pipeline scripting, data validation, and tooling.

Interview process:

1. Online HR Round: company introduction & experience discovery

2. Offline Hiring Manager Round: with two Senior Data Engineers

3. Online Hiring Manager Round: with Ops Director

Benefits

• 💰 Competitive Salary: We offer a salary that’s competitive with the market.

• 📄 Flexible Contract Options: We offer both local and international contract options, so you can choose what works best for you. You can also receive your salary in USD or VND.

• 🌱 Growth Opportunities: There’s plenty of room to grow if you want to go beyond your core focus and sharpen your skills.

• 💻 Tech Setup: You’ll get a MacBook Air or MacBook Pro, plus a monitor for work.

• 🩺 Premium Insurance: We provide premium insurance coverage for you and 1 loved one, so you can feel supported in and outside work.

• 🎯 Bonus Scheme: We offer a quarterly performance bonus of up to 150% of your compensation.

• 🤝 Team Bonding Allowance: You’ll get 800,000 VND per quarter for team bonding activities.

• 🌴 Paid Time Off & Public Holidays: You’ll get 14 days of annual leave, and we fully observe national public holidays.

• 🏠 Hybrid Working: Work from home on Tuesdays and Wednesdays.

• 🍛 Meals & Refreshments: We provide free lunch and dinner.

About Elfie

Elfie is the world’s #1 100% free digital health ecosystem, bringing together connected experiences for patients, healthcare professionals and healthcare organisations. Through the Elfie app, WhatsApp experiences, ElfieCare clinician tools and AI-powered health coaching, Elfie helps people take better care of their health in a simple, engaging and motivating way.

By combining gamification, AI and evidence-based health programmes, Elfie empowers people to build healthier habits while enabling healthcare professionals to better support their communities.

Backed by peer-reviewed medical publications and trusted by life sciences and insurance partners, the Elfie ecosystem drives meaningful patient engagement, improves adherence and generates valuable real-world insights, helping organisations achieve better health outcomes at scale.

Stay Elfie...