Founded in 2012, ByteDance's mission is to inspire creativity and enrich life. With a suite of more than a dozen products, including TikTok as well as platforms specific to the China market, including Toutiao, Douyin, and Xigua, ByteDance has made it easier and more fun for people to connect with, consume, and create content.

ByteDance

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The Infrastructure System Lab at ByteDance is seeking a Research Scientist with a PhD in Computer Science, Database, Information Retrieval, or a related field to build next-generation AI-native data infrastructure. This role focuses on designing and optimizing state-of-the-art vector indexing algorithms for large-scale similarity search, filtered search, and hybrid retrieval, directly contributing to vector database infrastructure supporting billions or even trillions of high-dimensional vectors. The team is highly collaborative, working on databases, large-scale systems, and AI, with opportunities to publish and contribute to open-source.

Cloud Site Reliability Engineer - DCS Cloud

<h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Responsibilities</h2><h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">About the Team</h3><p class="my-4 text-gray-700 leading-relaxed">We are the Infrastructure System Lab — a hybrid research and engineering group building the next-generation AI-native data infrastructure. Our work sits at the intersection of databases, large-scale systems, and AI. We drive innovation across:</p><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Next-generation databases: We build VectorDBs and multi-modal AI-native databases designed to support large-scale retrieval and reasoning workloads.</li><li class="leading-relaxed">AI for Infra: We leverage machine learning to build intelligent algorithms for infrastructure optimization, tuning, and observability.</li><li class="leading-relaxed">LLM Copilot: We develop LLM-based tooling like NL2SQL, NL2Chart.</li><li class="leading-relaxed">High-performance cache systems: We develop a multi-engine key-value store optimized for distributed storage workloads. We're also building KV caches for LLM inference at scale.</li></ul><p class="my-4 text-gray-700 leading-relaxed">This is a highly collaborative team where researchers and engineers work side-by-side to bring innovations from paper to production. We publish, prototype, and build robust systems deployed across key products used by millions.</p><h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">About the Role</h3><p class="my-4 text-gray-700 leading-relaxed">We are seeking a highly motivated and technically strong Research Scientist with a PhD in Computer Science, Database, Information Retrieval, or a related field to join our team. You will work on designing and optimizing state-of-the-art vector indexing algorithms to power large-scale similarity search, filtered search, and hybrid retrieval use cases. Your work will directly contribute to the next-generation vector database infrastructure that supports real-time and offline retrieval across billions or even trillions of high-dimensional vectors.</p><h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">Why Join Us</h3><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Work on problems at the frontier of AI x systems with huge practical impact.</li><li class="leading-relaxed">Collaborate with a world-class team of researchers and engineers.</li><li class="leading-relaxed">Opportunity to publish, attend conferences, and contribute to open-source.</li><li class="leading-relaxed">Competitive compensation, generous research support, and a culture of innovation.</li></ul><h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">Responsibilities</h3><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Research and develop new algorithms for approximate nearest neighbor (ANN) search, especially for filtered, hybrid, or disk-based scenarios.</li><li class="leading-relaxed">Optimize existing algorithms for scalability, low latency, memory footprint, and hybrid search support.</li><li class="leading-relaxed">Collaborate with engineering teams to prototype, benchmark, and productionize indexing solutions.</li><li class="leading-relaxed">Contribute to academic publications, open-source libraries, or internal technical documentation.</li><li class="leading-relaxed">Stay current with research trends in vector search, retrieval systems, retrieval-augmented generation (RAG), large language models (LLMs), and related areas.</li></ul><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Qualifications</h2><h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">Minimum Qualifications</h3><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">PhD in Computer Science, Applied Mathematics, Electrical Engineering, or a related technical field.</li><li class="leading-relaxed">Strong publication record in top-tier venues (e.g., SIGMOD, VLDB, SIGIR, NeurIPS, ICML, etc.) related to vector search, indexing, IR, or ML.</li><li class="leading-relaxed">Deep understanding of ANN algorithms, quantization, graph-based indexes, and partition-based indexes.</li><li class="leading-relaxed">Strong system-level thinking: ability to profile, benchmark, and optimize performance across CPU, memory, and storage layers.</li><li class="leading-relaxed">Proficiency in C++ and/or Python, with experience in implementing and benchmarking algorithms.</li></ul><h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">Preferred Qualifications</h3><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Experience building or contributing to vector databases or retrieval engines in production.</li><li class="leading-relaxed">Familiarity with frameworks like FAISS, ScaNN, HNSWLib, or DiskANN.</li><li class="leading-relaxed">Understanding of distributed systems and/or GPU-accelerated search.</li><li class="leading-relaxed">Experience with hybrid search (dense + sparse), multi-modal retrieval, or retrieval for LLMs.</li><li class="leading-relaxed">Passion for bridging theory and practice in production-scale systems.</li></ul><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Job Information</h2><h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">【For Pay Transparency】Compensation Description (Annually)</h3><p class="my-4 text-gray-700 leading-relaxed">The base salary range for this position in the selected city is $129960 - $246240 annually.​</p><p class="my-4 text-gray-700 leading-relaxed">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.​</p><p class="my-4 text-gray-700 leading-relaxed">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).​</p><p class="my-4 text-gray-700 leading-relaxed">The Company reserves the right to modify or change these benefits programs at any time, with or without notice.​</p><h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">For Los Angeles County (unincorporated) Candidates:​</h3><p class="my-4 text-gray-700 leading-relaxed">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:​</p><p class="my-4 text-gray-700 leading-relaxed">1. Interacting and occasionally having unsupervised contact with internal/external clients and/or colleagues;​</p><p class="my-4 text-gray-700 leading-relaxed">2. Appropriately handling and managing confidential information including proprietary and trade secret information and access to information technology systems; and​</p><p class="my-4 text-gray-700 leading-relaxed">3. Exercising sound judgment.​</p><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">About Us</h2><p class="my-4 text-gray-700 leading-relaxed">Founded in 2012, ByteDance's mission is to inspire creativity and enrich life. With a suite of more than a dozen products, including TikTok, Lemon8, CapCut and Pico as well as platforms specific to the China market, including Toutiao, Douyin, and Xigua, ByteDance has made it easier and more fun for people to connect with, consume, and create content.​</p><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Why Join ByteDance</h2><p class="my-4 text-gray-700 leading-relaxed">Inspiring creativity is at the core of ByteDance's mission. Our innovative products are 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 enrich life - a mission we work towards every every day.​</p><p class="my-4 text-gray-700 leading-relaxed">As ByteDancers, 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. 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.​</p><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Diversity & Inclusion​</h2><p class="my-4 text-gray-700 leading-relaxed">ByteDance 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 ByteDance, our mission is to inspire creativity and enrich life. 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.​</p><h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Reasonable Accommodation</h2><p class="my-4 text-gray-700 leading-relaxed">ByteDance 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 <a href="https://bytedance.us.larkoffice.com/share/base/form/shrusW6pfDVzkZRjoYkIUjlOhth" target="_blank" rel="noopener noreferrer" class="text-blue-600 hover:text-blue-800 hover:underline transition-colors duration-200">https://tinyurl.com/RA-request</a></p>

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We are looking for a Hiring Specialist to join our Pixel People Team. This role involves finding new talents through job postings and headhunting, managing the entire selection process, communicating with managers, and collaborating with schools and agencies. You will also be involved in broader HR topics such as onboarding, education, employee satisfaction, benefits, and employer branding, contributing to a positive company culture and the development of Pixel Federation.

<p>Home of unique puzzle &amp; tycoon mobile games, played by millions, developed with passion, from players to players.</p><p>We are an independent game developer and publisher from Bratislava, Slovakia, where brain and creative businesses are flourishing and the gaming scene is about to emerge to its full potential.</p><p>We’re on the right track and constantly looking for passion-driven talents! So if you’re looking for a job that offers you an inspiring environment, ownership, and independence, don't hesitate and join the Pixel side, we are fun!</p><p>Our biggest hits include Diggy’s Adventure, TrainStation 2, and Puzzle Adventure. Plus we are always baking some new exciting projects behind the scenes.</p>

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<h2 class="text-2xl md:text-3xl font-bold mt-10 mb-4 border-b pb-2 text-gray-800">Hiring Specialist</h2><p class="my-4 text-gray-700 leading-relaxed">We are looking for a partner for our Pixel People Team, someone who will help us bring more talents to Pixle and at the same time will be eager to be part of everything that happens around people here. Specifically, this is a Hiring Specialist position, where you would be mainly responsible for finding new talents (either by creating offers or headhunting), the entire selection process, communication with managers, and cooperation with schools or agencies.</p><p class="my-4 text-gray-700 leading-relaxed">But don't expect to be "just a recruiter". Here in the People team, we value interchangeability and a broader perspective. You will work closely with Business Partners and naturally get involved in topics such as onboarding, education, satisfaction, benefits, and employer branding.</p><p class="my-4 text-gray-700 leading-relaxed">Since we are a company that places great emphasis on people, we are looking for someone who looks forward to the opportunity to participate in building a positive company culture and at the same time seeks new opportunities not only for the development of Pixle but also for themselves. If you feel this is right for you, let us know. We look forward to meeting you!</p><h3 class="text-xl md:text-2xl font-bold mt-8 mb-3 text-gray-800">Job Description</h3><ul class="list-disc list-inside my-5 pl-5 space-y-2 text-gray-700"><li class="leading-relaxed">Responsibility for the entire selection process - from defining the need with the manager, creating job offers, screening CVs, organizing and participating in interviews, up to signing the offer.</li><li class="leading-relaxed">Headhunt potential stars for our company - through direct search, your network, and various platforms. We don't just rely on who applies.</li><li class="leading-relaxed">Building and maintaining a database of candidates who could be a perfect fit in the future.</li><li class="leading-relaxed">Cooperation with schools and employment agencies.</li><li class="leading-relaxed">Gradual taking over and development of the internship program as a standalone project - from setting up cooperation with schools, through selection and care for interns, to its long-term strategy and development.</li><li class="leading-relaxed">Monitoring the situation and trends in the market with the aim of attracting talent.</li><li class="leading-relaxed">Cooperation with People Business Partners and managers in building a hiring strategy and Employer Branding.</li><li class="leading-relaxed">Studying the needs and requirements for specific positions and subsequently searching for potential candidates on various platforms and through your network.</li><li class="leading-relaxed">Ownership of our recruitment tool and finding ways to improve processes and make them more efficient.</li><li class="leading-relaxed">Being part of other topics - onboarding, education, employee evaluation, satisfaction surveys, benefits, and many others.</li></ul>

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