Security ML AI Engineer, Lead

Overview

Who we are

ML/AI Engineer Security Intelligence

Location: Plano Texas

To save time applying Toyota does not offer sponsorship of job applicants for employment-based visas or any other work authorization for this position at this time.

Excited to grow your career at Toyota

We value our talented employees and whenever possible strive to help our associates grow professionally before recruiting new talent for open positions. If you think the open position is right for you we encourage you to apply!

Our people make all the difference in our success.

Who we are

Collaborative. Respectful. A place to dream and do. These are just a few words that describe what life is like at Toyota. As one of the worlds most admired brands Toyota is growing and leading the future of mobility through innovative high-quality solutions designed to enhance lives and delight those we serve. Were looking for diverse talented team members who want to Dream. Do. Grow. with us.

Who Were Looking For

Toyota Financial Services (TFS) Technology team is looking for a highly motivated person to fill a role as an ML/AI Security Lead within the Security Intelligence Engineering organization. Youll own the intelligence layer of a new AI-powered security platform starting with prompt engineering and managed AI service integration then progressing to fine-tuning models on enterprise security data and building a multi-model serving and routing layer. This role is what makes the organization own its intelligence rather than renting it from a vendor. Youll train models that understand the specific security environment build the feedback loops that make them better over time and ensure the AI layer delivers high accuracy on alert triage while keeping costs predictable through intelligent model routing.

What youll be doing

• Design and implement prompt engineering patterns for managed AI service integration

• Build training data pipelines from the security data lake curating labeling and versioning datasets from real enterprise security telemetry

• Fine-tune models on organization-specific security data alert triage risk scoring finding classification

• Implement the analyst feedback loop capturing human corrections to continuously improve model accuracy

• Build model evaluation frameworks with rigorous metrics (F1 precision recall false positive rates) benchmarked against analyst agreement

• Design and implement a model routing layer directing each task to the optimal model based on complexity latency requirements and cost

• Monitor models in production for drift accuracy degradation and emerging failure modes

• Implement centralized token usage monitoring for leadership visibility into AI consumption and cost control

• Collaborate with the Lead Engineer on agent architectures multi-agent orchestration tool use and autonomous triage workflows

• Deploy and manage model inference endpoints across cloud ML services and container-based serving

• Build the analyst feedback loop: approval/rejection signals in dashboards feeding back into retraining pipelines

What You Bring

• 3 years in applied ML/AI engineering (not research-only production deployment required)

• Hands-on experience with LLM fine-tuning LoRA QLoRA or full fine-tuning on domain-specific data

• Experience with cloud ML platforms (e.g. AWS SageMaker): training jobs hyperparameter tuning model registry endpoint deployment

• PyTorch proficiency for model training and custom architectures

• Experience building evaluation pipelines automated metrics human evaluation protocols A/B testing

• Understanding of transformer architectures and attention mechanisms (not just API calls)

• Python fluency with production engineering practices (testing CI/CD monitoring)

• Strong communication skills with the ability to explain model behavior and limitations to non-ML stakeholders

Added bonus if you have

• Experience with security or cybersecurity data alert classification threat detection anomaly detection

• Familiarity with model serving at scale (vLLM Triton Inference Server TensorRT optimization)

• HuggingFace ecosystem experience model hub tokenizers datasets library PEFT

• Experience with RAG architectures and vector databases

• Background in multi-model routing or mixture-of-experts approaches

• Understanding of agentic AI patterns tool use chain-of-thought multi-step reasoning

• Experience with model cost optimization quantization distillation caching strategies

• Self-motivated individual who thrives in ambiguous environments and can build processes from the ground up

What Well Bring

During your interview process our team can fill you in on all the details of our industry-leading benefits and career development opportunities. A few highlights include:

• A work environment built on teamwork flexibility and respect

• Professional growth and development programs to help advance your career as well as tuition reimbursement

• Vehicle purchase & lease programs

• Comprehensive health care and wellness plans for your entire family

• Toyota 401(k) Savings Plan featuring a company match as well as an annual retirement contribution from Toyota regardless of whether you contribute

• Paid holidays and paid time off

• Referral services related to prenatal services adoption childcare schools and more

• Tax Advantaged Accounts (Health Savings Account Health Care FSA Dependent Care FSA)

Belonging at Toyota

Our success begins and ends with our people. We embrace all perspectives and value unique human experiences. Respect for all is our North Star. Toyota is proud to have 10 different Business Partnering Groups across 100 different North American chapter locations that support team members efforts to dream do and grow without questioning that they belong.

Applicants for our positions are considered without regard to race ethnicity national origin sex sexual orientation gender identity or expression age disability religion military or veteran status or any other characteristics protected by law.

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