Senior Software Engineer

Senior Software Engineer - AI for Security, Data/Application Location: San Jose Team: Technology Employment Type: Regular Job Code: A A Responsibilities About the TeamThe Security Engineering team is a research and development (R&D) team that operates within the broader Security Organization. Their core responsibility is to construct, implement, and sustain secure infrastructures, platforms, and technologies. In addition, they provide support to cross-functional teams within ByteDance. The team's ultimate objective is to serve and safeguard ByteDance products and infrastructures on a global scale. Build and refine AI security datasets: Design and develop comprehensive, in-depth, and challenging datasets for AI-for-Security across different security scenarios. Explore model consistency and performance prediction in security contexts: Conduct deep research on LLM performance during training on security tasks and assess the performance limits of models in security applications. Develop security data and evaluation standards from an interpretability perspective: Propose interpretability-based standards grounded in model mechanisms to assess transparency and reliability of LLMs in security decision-making and remediation. Red Teaming and model optimization: Perform Red Teaming from an evaluation perspective to systematically identify weaknesses of LLMs in security contexts and propose targeted optimization strategies. Build RAG evaluation systems: Design end-to-end evaluation metrics and benchmarks for security-specific RAG systems, create automated evaluation workflows, and develop interpretability and traceability tools for RAG systems. Qualifications Strong coding and algorithm foundation: Excellent programming skills, strong knowledge of data structures and algorithms, proficiency in at least one mainstream programming language (e.g., Python, Java, C++). Familiarity with AI-related tech stack: Solid understanding of NLP, CV, ML technologies, with in-depth knowledge of LLM-related stacks (e.g., Reward Model, GRPO/PPO/DPO, SFT/RFT, CT, PE). Excellent problem-solving skills: Strong analytical and problem-solving capabilities with the ability to independently explore innovative solutions. Strong communication and collaboration skills: Ability to work closely with team members, explore new technologies collaboratively, and drive technological advancements. Preferred Qualifications Published research papers in top conferences/journals in CV/NLP/Security domain. Experience with security-related models (e.g., vulnerability detection models, malicious code analysis models) is a plus. Leading impactful projects or publishing significant papers in the LLM or AI security domain is preferred. Job Information The base salary range for this position in the selected city is $136,800 - $359,720 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 Us 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. Why Join ByteDance 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 day. 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. Diversity & Inclusion 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. Reasonable Accommodation 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 #J-18808-Ljbffr