Senior Full-stack Engineer, AI Data Application – USDS

Seattle Regular R&D Job ID: A57938 Responsibilities About the Team The TikTok U.S. Data Security (USDS) team is responsible for the security, integrity, and compliance of TikTok’s data within the United States. The Data Platform Team builds a scalable, reliable, cost-efficient infrastructure that ensures data integrity and empowers every business unit to win through self-service tools and scientific insights. We are seeking a Full-Stack Engineer to help drive company-wide efficiency and "self-service empowerment" through AI-driven innovation. Our mission is to transform how the organization interacts with data by building a "technical multiplier"—a suite of internal products that automate manual bottlenecks and accelerate business velocity. Responsibilities - Own the Full Product Experience: Design, build, and ship end-to-end internal web applications — taking features from wireframe to production independently, owning both the frontend UX and the backend logic. - Build User-Facing AI Tools: Develop intuitive interfaces for AI-powered capabilities including conversational data assistants, natural language SQL tools, and intelligent workflow automation — making complex AI accessible to non-technical users. - Drive Self-Service Adoption: Identify where internal teams are blocked by manual processes or engineering dependencies, and replace those bottlenecks with polished, easy-to-use self-service products. - Elevate Internal UX Standards: Establish and champion UI/UX best practices across internal tooling — raising the bar so internal products feel as refined and reliable as consumer-grade applications. - Collaborate Across Teams: Work closely with backend platform engineers, data scientists, and business stakeholders to translate complex data capabilities into seamless product experiences. Qualifications Minimum Qualifications - Education: BS/MS in Computer Science, Engineering, or a related technical field. - Experience: 5+ years of software development experience with a proven track record of shipping full-stack products — frontend to backend — in production environments. - Frontend Proficiency: Strong command of modern frontend frameworks (React, Vue, or equivalent), with a high bar for UI quality, responsiveness, and usability. - Backend Proficiency: Solid experience building APIs and services in Python, Go, Node.js, or Java; comfortable with databases, caching, and service integration. Preferred Qualifications - AI Product Experience: Experience integrating LLM APIs, RAG pipelines, or agentic workflows into user-facing products — with a focus on making AI feel intuitive and trustworthy to end users. - Internal Tooling Portfolio: A track record of building internal platforms that drove measurable adoption — dashboards, workflow tools, data explorers, or reporting applications used at scale. - Design Sensibility: Ability to produce or closely collaborate on UX/UI design; experience with Figma or similar tools is a plus. - Leadership: Experience as a product-minded tech lead who can drive 0-1 initiatives end-to-end, mentor engineers, and make sound tradeoffs between speed and quality. Job Information 【For Pay Transparency】Compensation Description (Annually)

The base salary range for this position in the selected city is $177688 - $341734 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 https://tinyurl.com/USDS\-RA