Data Engineer, Lark - USDS

Responsibilities

About the team Our team is dedicated to driving product excellence through big data, ensuring that Lark remains the premier communication and productivity engine for a global workforce. You will navigate a high-impact environment where you design high-quality real-time and offline data warehouses, curate efficient data assets, and implement technical solutions that optimize internal workflows. Your work provides the backbone for daily operations and data-driven decision-making, directly enhancing the productivity of hundreds of thousands of employees worldwide. As a Data Engineer on the US Tech and Product - Lark team, you will have the unique opportunity to build, optimize, and scale the comprehensive data platform powering powering an all-in-one collaborative workspace that redefines global enterprise productivity. Lark cohesively integrates high-performance Chat, Docs, Meetings, and cutting-edge Lark AI into a single, cohesive environment. Responsibilities: - Design and implement high-concurrency, real-time streaming pipelines (using Flink, Spark Streaming, or Kafka) that serve as the neural network for the Lark ecosystem. - Lead the design and maintenance of high-quality offline and real-time data warehouses, ensuring robust ETL/ELT processes that consolidate siloed data from across the Lark suite into a unified source of truth. - Implement automated data validation frameworks and monitoring tools to ensure the accuracy, consistency, and lineage of critical business metrics that drive executive decision-making. - Research and deploy industry-leading distributed computing frameworks (e.g., Flink, Spark, Presto) to provide a high-performance foundation for massive-scale internal telemetry and cross-functional data assets. - Analyze complex user requirements to architect and develop high-performance backend software solutions using Java or Go; apply advanced Data Structures, Algorithms, and Microservices principles to optimize workplace productivity and cross-platform data flow. - Troubleshoot complex production failures and conduct deep-dive bottleneck analysis for distributed engines; design self-healing mechanisms and performance tuning strategies to ensure the 24/7 stability of Lark's global data infrastructure. - Establish proactive alerting and monitoring to ensure pipeline stability and the security of internal employee data.

Qualifications

Minimum Qualifications: - Master/PhD in Statistics, Management Science, Economics, Operations Research, or other highly quantitative fields. - 3+ years of experience in data science or analytics, with a strong track record of performing high-quality analysis on Big Data. - Strategic Data Science Architect with a proven track record of incubating zero-to-one technologies and driving high-level organizational change by translating complex data insights into actionable strategies for executive leadership. Preferred Qualifications: - Demonstrated leadership and self-direction. Willingness to both teach others and learn new techniques. - Demonstrated skills in selecting the right statistical tools given a data analysis problem. Effective written and verbal communication skills.

Job Information

[For Pay Transparency]Compensation Description (Annually)

The base salary range for this position in the selected city is $136800 - $359720 annually.

Compensation may vary outside of this range depending on a number of factors, including a candidate's qualifications, skills, competencies and experience, and location. Base pay is one part of the Total Package that is provided to compensate and recognize employees for their work, and this role may be eligible for additional discretionary bonuses/incentives, and restricted stock units.

Benefits may vary depending on the nature of employment and the country work location. Employees have day one access to medical, dental, and vision insurance, a 401(k) savings plan with company match, paid parental leave, short-term and long-term disability coverage, life insurance, wellbeing benefits, among others. Employees also receive 10 paid holidays per year, 10 paid sick days per year and 17 days of Paid Personal Time (prorated upon hire with increasing accruals by tenure).

The Company reserves the right to modify or change these benefits programs at any time, with or without notice.

For Los Angeles County (unincorporated) Candidates:

Qualified applicants with arrest or conviction records will be considered for employment in accordance with all federal, state, and local laws including the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act. Our company believes that criminal history may have a direct, adverse and negative relationship on the following job duties, potentially resulting in the withdrawal of the conditional offer of employment:

1. Interacting and occasionally having unsupervised contact with internal/external clients and/or colleagues;

2. Appropriately handling and managing confidential information including proprietary and trade secret information and access to information technology systems; and

3. Exercising sound judgment.

About USDS

TikTok USDS Joint Venture LLC is dedicated to the safety and security of millions of Americans who create, discover, and connect with what they love on the apps we operate. The Joint Venture has been established in compliance with the Executive Order signed by President Trump on September 25, 2025. Our foundation is a comprehensive data privacy and cybersecurity program we operate under defined safeguards to protect national security and secure U.S. user data, apps and the algorithm. We safeguard the U.S. content ecosystem, holding decision-making authority for trust and safety policies and moderation. USDS Joint Venture helps ensure Americans can continue to express their creativity, discover new hobbies and interests, and build thriving communities and businesses on a global scale.

On-site presence across teams allows the company to operate with greater speed, alignment, and agility - especially in areas like real-time decision-making, team development, and integrated execution. As such, the company is shifting from a hybrid work model to a fully in-person schedule up to 5 days a week.

Why Join Us

Inspiring creativity is at the core of TikTok's mission. Our innovative product is 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 bring joy - a mission we work towards every day.

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. Every challenge is an opportunity to learn and innovate as one team. We're resilient and embrace challenges as they come. 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

TikTok 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 TikTok, our mission is to inspire creativity and bring joy. 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.

USDS Reasonable Accommodation

USDS is committed to providing reasonable accommodations in our recruitment processes for candidates with disabilities, pregnancy, sincerely held religious beliefs or other reasons protected by applicable laws. If you need assistance or a reasonable accommodation, please reach out to us at