Express.js Jobs in California

561 - 580 of 1,047 Jobs

Senior Machine Learning Engineer Manager - TikTok Trust & SafetyJob Title - Senior Machine Learning Engineer Manager - TikTok Trust & Safety

TikTokCompany Name - TikTok

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San Jose, California, USA

Full-time

Location : San Jose Employment Type : Regular Job Code : A13850 Apply to this job Share this listing: Responsibilities Our Trust and Safety team is fast growing and responsible for building machine learning models and systems to protect our users from the impact of negative content. Our mission is to protect billions of users and publishers across the globe every day. We embrace state-of-the-art machine learning technologies and scale them to moderate the tremendous amount of data generat

Data Engineer Intern (TikTok-Privacy and Security-Data Infra) - 2026 Summer(BS/MS)Job Title - Data Engineer Intern (TikTok-Privacy and Security-Data Infra) - 2026 Summer(BS/MS)

TikTokCompany Name - TikTok

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San Jose, California, USA

Full-time

Location : San Jose Employment Type : Intern Job Code : A02944 Apply to this job Share this listing: Responsibilities The Data Infra, Privacy & Security team is missioned to ensure the safety of company-level big data products and compliance with local principals and regulations. We are adding privacy features to TikTok tech stack, and building world-class data security & privacy framework on top big data technology. It's an emerging area where many companies and industry are heavily inve

Data Scientist - Applied AI (Community Index) - San JoseJob Title - Data Scientist - Applied AI (Community Index) - San Jose

TikTokCompany Name - TikTok

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San Jose, California, USA

Full-time

Location : San Jose Employment Type : Regular Job Code : A122471 Apply to this job Share this listing: Responsibilities About the team The community insights team aims to revolutionize the way to quickly and accurately identify and fulfill user needs. The team leverages content understanding and user signals to identify business opportunities and turn our findings into real products to power exponential growth; provide iterative, actionable and personalized insights. We are looking for ge

Node.JS DeveloperJob Title - Node.JS Developer

Loginsoft Consulting LLCCompany Name - Loginsoft Consulting LLC

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Remote

Contract

Position: Node.JS Developer Location: Remote Duration: 12+ Months Note: "A Consultant should work in the EST time zone." Required Skills: 5+ years of professional experience in backend development with Node.js.Strong understanding of JavaScript, TypeScript, and modern backend frameworks (Express.js, Nest.js, etc).Experience building and integrating with RESTful API s and MicroServices.Familiarity with cloud platforms such as AWS, Azure, or Google Cloud Platform.Strong problem-solving skills and

Software Engineer Intern (Data Ecosystem) - 2026 Summer (BS/MS)Job Title - Software Engineer Intern (Data Ecosystem) - 2026 Summer (BS/MS)

TikTokCompany Name - TikTok

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San Jose, California, USA

Full-time

Location : San Jose Employment Type : Intern Job Code : A26892A Apply to this job Share this listing: Responsibilities The TikTok Data Ecosystem Team has the vital role of crafting and implementing a storage solution for offline data in TikTok's recommendation system, which caters to more than a billion users. Their primary objectives are to guarantee system reliability, uninterrupted service, and seamless performance. They aim to create a storage and computing infrastructure that can ada

Senior Data Scientist (Multiple Positions)Job Title - Senior Data Scientist (Multiple Positions)

TikTokCompany Name - TikTok

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San Jose, California, USA

Full-time

Location : San Jose Employment Type : Regular Job Code : A03950B Apply to this job Share this listing: Responsibilities About TikTok TikTok is the leading destination for short-form mobile video. At TikTok, our mission is to inspire creativity and bring joy. TikTok's global headquarters are in Los Angeles and Singapore, and we also have offices in New York City, London, Dublin, Paris, Berlin, Dubai, Jakarta, Seoul, and Tokyo. Why Join Us Inspiring creativity is at the core of TikTok's mis

Machine Learning Scientist Intern (TikTok-Recommendation-Live) - 2025 Fall (PhD)Job Title - Machine Learning Scientist Intern (TikTok-Recommendation-Live) - 2025 Fall (PhD)

TikTokCompany Name - TikTok

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San Jose, California, USA

Full-time

Location : San Jose Employment Type : Intern Job Code : A151827 Apply to this job Share this listing: Responsibilities About the Team Recommendation algorithm team plays a central role in the company, driving critical product decisions and platform growth. The team is made up of machine learning researchers and engineers, who support and innovate on production recommendation models and drive product impact. The team is fast-pacing, collaborative and impact-driven. We are looking for talen

Machine Learning Scientist Intern (TikTok-Data-Plus) - 2025 Fall (PhD)Job Title - Machine Learning Scientist Intern (TikTok-Data-Plus) - 2025 Fall (PhD)

TikTokCompany Name - TikTok

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San Jose, California, USA

Full-time

Location : San Jose Employment Type : Intern Job Code : A60146B Apply to this job Share this listing: Responsibilities About the Team Recommendation algorithm team plays a central role in the company, driving critical product decisions and platform growth. The team is made up of machine learning researchers and engineers, who support and innovate on production recommendation models and drive product impact. The team is fast-pacing, collaborative and impact-driven. We are looking for talen

Machine Learning Engineer Graduate (Lead Ads Technology) - 2026 Start (BS/MS)Job Title - Machine Learning Engineer Graduate (Lead Ads Technology) - 2026 Start (BS/MS)

TikTokCompany Name - TikTok

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San Jose, California, USA

Full-time

Location : San Jose Employment Type : Regular Job Code : A169615A Apply to this job Share this listing: Responsibilities The Lead Ads team empowers TikTok's global monetization (billion-dollar business) via efficiently delivering lead ads on TikTok. Our mission is to push the boundaries of large-scale ads delivery systems and lead the innovations of TikTok's personalized online advertising. We are looking for talented individuals to join our team in 2026. As a graduate, you will get unpar

Software Engineer Intern (TikTok-PGC-AI Platform) - 2026 Summer (BS/MS)Job Title - Software Engineer Intern (TikTok-PGC-AI Platform) - 2026 Summer (BS/MS)

TikTokCompany Name - TikTok

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San Jose, California, USA

Full-time

Location : San Jose Employment Type : Intern Job Code : A62936 Apply to this job Share this listing: Responsibilities TikTok dominates the global short video space - but when it comes to AI, we're just getting started. There's still massive room for innovation. Yet today, applying AI technology at scale inside TikTok remains difficult - fragmented tools, high technical barriers, and limited collaboration slow down innovation. We're changing that. Join us to accelerate the adoption of AI a

Mobile Developer Infrastructure Engineer - TikTok Dev InfraJob Title - Mobile Developer Infrastructure Engineer - TikTok Dev Infra

TikTokCompany Name - TikTok

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San Jose, California, USA

Full-time

Location : San Jose Employment Type : Regular Job Code : A28722 Apply to this job Share this listing: Responsibilities The IC-TikTok team, part of the Intelligent Creation department, is an international R&D group tasked with building creative capabilities for TikTok. We're dedicated to productizing AI and multimedia technologies to create world-class creation experiences for TikTok users. Our tech stack includes front-end, back-end, mobile, and desktop development, as well as multimedia

Site Reliability Engineer Graduate (Compute Platform) - 2026 Start (BS/MS)Job Title - Site Reliability Engineer Graduate (Compute Platform) - 2026 Start (BS/MS)

TikTokCompany Name - TikTok

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San Jose, California, USA

Full-time

Location : San Jose Employment Type : Regular Job Code : A01156 Apply to this job Share this listing: Responsibilities We are looking for talented individuals to join our team in 2026. As a graduate, you will get opportunities to pursue bold ideas, tackle complex challenges, and unlock limitless growth. Launch your career where inspiration is infinite at TikTok. Team introduction Our Compute Platform SRE team supports all Big Data services and products across the company. We are a newly e

Machine Learning Engineer Graduate (App Ads and Gaming) - 2026 Start (BS/MS)Job Title - Machine Learning Engineer Graduate (App Ads and Gaming) - 2026 Start (BS/MS)

TikTokCompany Name - TikTok

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San Jose, California, USA

Full-time

Location : San Jose Employment Type : Regular Job Code : A20684 Apply to this job Share this listing: Responsibilities The App Ads and Gaming team empowers TikTok's global monetization (billion-dollar business) via efficiently delivering application ads on TikTok. Our mission is to push the boundaries of large-scale ad delivery systems and lead the innovations of TikTok's personalized online advertising. We are looking for talented individuals to join our team in 2026. As a graduate, you

Machine Learning Engineer Graduate (Ads Interface and Platform) - 2026 Start (BS/MS)Job Title - Machine Learning Engineer Graduate (Ads Interface and Platform) - 2026 Start (BS/MS)

TikTokCompany Name - TikTok

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San Jose, California, USA

Full-time

Location : San Jose Employment Type : Regular Job Code : A32568 Apply to this job Share this listing: Responsibilities We are TikTok Monetization Ads Interface Team, dedicated to creating an exceptional advertising experience and intelligent growth marketing strategies for global advertising clients. Here, you will engage with challenging technical domains such as large-scale user systems, diverse advertising fields (ad creation, material optimization, delivery strategy, attribution, meas

AI Effects Workflow Engineer Intern (TikTok-Intelligent Creation-LLM Driven Creation) - 2026 Summer (BS/MS)Job Title - AI Effects Workflow Engineer Intern (TikTok-Intelligent Creation-LLM Driven Creation) - 2026 Summer (BS/MS)

TikTokCompany Name - TikTok

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San Jose, California, USA

Full-time

Location : San Jose Employment Type : Intern Job Code : A75032 Apply to this job Share this listing: Responsibilities Effect House is TikTok's official AR creation platform, empowering millions of global creators to design and publish interactive effects. We are now reimagining the entire effects creation workflow with AI and LLMs. Our goal is to make building AR effects as intuitive and conversational as coding with tools like Cursor or Copilot-where creators can simply describe their id

Data Scientist Intern (Privacy and Data Protection Office)- 2025 Start (BS/MS)Job Title - Data Scientist Intern (Privacy and Data Protection Office)- 2025 Start (BS/MS)

TikTokCompany Name - TikTok

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San Jose, California, USA

Full-time

Location : San Jose Employment Type : Intern Job Code : A07175A Apply to this job Share this listing: Responsibilities About the team PDPO(Privacy and Data Protection Office) is the organization to lead, supervise, and empower all TikTok's privacy work in an accountable and industry leading way. This team is the expert in the landscape of privacy risks and passionate about consulting across the company on implementing the proper safeguards and technical mitigations to ensure that our user

Software Engineer - TikTok Ads Creator MonetizationJob Title - Software Engineer - TikTok Ads Creator Monetization

TikTokCompany Name - TikTok

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San Jose, California, USA

Full-time

Location : San Jose Employment Type : Regular Job Code : A95576 Apply to this job Share this listing: Responsibilities A "creative" is the ad (in the form of a short-form video) served to TikTok users, composed of video, background music, call-to-action card, post-click landing page, and other formats that get delivered to users. A quote goes "creativity is the soul of advertising", because a good ad creative is effective, yet difficult to produce, especially at the scale of TikTok advert

Senior Research Engineer - Foundation Models, Ads IntegrityJob Title - Senior Research Engineer - Foundation Models, Ads Integrity

TikTokCompany Name - TikTok

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San Jose, California, USA

Full-time

Location : San Jose Employment Type : Regular Job Code : A177519 Apply to this job Share this listing: Responsibilities Our Business Integrity team has a strong user focus and a dedication to technical excellence. We aim to meet our users' needs with reliable and high-performing platforms and services. We are looking for strong machine learning engineers who are excited to grow their business understanding, build highly scalable machine learning models, and partner across disciplines with

Senior Data Solution Architect/Engineer (Multiple Positions)Job Title - Senior Data Solution Architect/Engineer (Multiple Positions)

TikTokCompany Name - TikTok

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San Jose, California, USA

Full-time

Location : San Jose Employment Type : Regular Job Code : A210462 Apply to this job Share this listing: Responsibilities About TikTok TikTok is the leading destination for short-form mobile video. At TikTok, our mission is to inspire creativity and bring joy. TikTok's global headquarters are in Los Angeles and Singapore, and we also have offices in New York City, London, Dublin, Paris, Berlin, Dubai, Jakarta, Seoul, and Tokyo. Why Join Us Inspiring creativity is at the core of TikTok's mis

Data Engineer-Privacy and Data Protection OfficeJob Title - Data Engineer-Privacy and Data Protection Office

TikTokCompany Name - TikTok

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San Jose, California, USA

Full-time

Location : San Jose Employment Type : Regular Job Code : A245349A Apply to this job Share this listing: Responsibilities About the team PDPO(Privacy and Data Protection Office) is the organization to lead, supervise, and empower all TikTok's privacy work in an accountable and industry leading way. This team is the expert in the landscape of privacy risks and passionate about consulting across the company on implementing the proper safeguards and technical mitigations to ensure that our us