Senior Software Engineer - AI for Security Post-Training

2 Months ago • 4-8 Years • Monetization • Research & Development • $194,000 PA - $410,000 PA

Job Summary

Job Description

ByteDance's Security Engineering team seeks a Senior Software Engineer specializing in AI for Security Post-Training. Responsibilities include exploring LLM post-training applications in security, building AI-powered data labeling and enhancement technologies, conducting domain-specific LLM training and optimization (SFT/RL, etc.), and performing radical exploration of high-value technologies. The ideal candidate possesses a Master's or Ph.D. in Computer Science or a related field, strong programming skills (Go/Python/Java/C), and in-depth experience in areas like risk control, NLP, or deep learning. Familiarity with large model pre-training, post-training techniques (SFT/RL), and RAG is essential. The role involves improving training data quality, accelerating data iteration, and enhancing large-scale model inference capabilities.
Must have:
  • Master's/PhD in CS or related field
  • Strong programming skills (Go/Python/Java/C)
  • Experience in risk control, NLP, deep learning
  • Familiarity with LLM pre/post-training, RAG
  • Build AI-powered data labeling technologies
Good to have:
  • Published research papers
  • Model acceleration and large-scale training system architecture experience
Perks:
  • Medical, dental, and vision insurance
  • 401(k) savings plan with company match
  • Paid parental leave
  • Paid holidays and sick days
  • Paid Personal Time

Job Details

Responsibilities
About the Team The 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. Responsibilities: - Explore the application of LLM post-training technology in AI For Security; - Build data labeling, enhancement, and synthesis technologies based on AI to improve training data quality and domain adaptation, and accelerate data iteration; - Domain specific LLM training, optimization such as instruction fine-tuning and reinforcement learning to improve the ability of large-scale model inference, code, tool use ability etc. - Radical exploration of high-value technologies and application areas.
Qualifications
Minimum Qualifications: - Master's or Ph.D. Degree in computer science, or related field; - Solid knowledge of computer science and machine learning; - Solid programming skills using go/python/java/c; - In-depth experience in one or more fields such as risk control, NLP, multi-modal Machine Learning, deep learning, search, recommendation, etc; - Familiar with large model pre-training, post-training (SFT/RL, etc.), and RAG; - Good communication and coordination skills, self-motivated. Preferred Qualifications: - Published research papers in top conferences/journals in CV/NLP/Security domain; - Familiar with model acceleration and large-scale training system architecture.
Job Information
【For Pay Transparency】Compensation Description (Annually)

The base salary range for this position in the selected city is $194000 - $410000 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

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About The Company

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.

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