Lead ML/AI Engineer

TCC Toyota Motor Credit Corporation Company; Plano (TX); On-site; USD 140,000 - 210,000; Full time

Benefits offered by this job

Team Member Vehicle Purchase Discount

Toyota Team Member Lease Vehicle

Professional growth and tuition Reimb.

Health care and wellness plans

401(k) with company match

Paid holidays and time off

Relocation assistance

Job summary

Toyota Financial Services in Plano, TX seeks a Lead Engineer in ML/AI to design and deploy production-grade AI systems on AWS. You will own ML features end-to-end, mentor engineers, and collaborate with product and data teams to deliver AI-powered capabilities.

The role requires strong ML fundamentals, hands-on experience with LLMs, and proficiency in Python and ML frameworks. This is an on-site role with opportunities to shape technical direction and drive reliability.

Qualifications

• Bachelor's degree in Computer Science, Machine Learning, Statistics, or related field, or equivalent practical experience.
• 5+ years of software engineering experience, including 2–4 years focused on ML/AI in production.
• Strong ML fundamentals: supervised/unsupervised learning, deep learning architectures, optimization techniques, evaluation methodologies.
• Hands-on with large language models: prompt engineering, RAG pipelines, embedding models, vector databases, and agent frameworks (LangChain, LlamaIndex).
• Experience with AWS AI/ML services: Bedrock, SageMaker, Lambda/Step Functions, S3, EventBridge/SQS/SNS, OpenSearch.
• Strong Python proficiency for production ML code.
• Experience with core ML frameworks: PyTorch, TensorFlow, JAX; libraries like Hugging Face Transformers, scikit-learn, XGBoost.
• Familiarity with MLOps: MLflow, W&B, model registries, CI/CD for ML workflows.
• Experience with data engineering: ETL, feature stores, data validation, structured/unstructured data.
• Understanding of IaC for ML infra (AWS CDK, CloudFormation, Terraform).
• Experience with observability: model performance tracking, data drift detection, alerts.
• Clear communicator for discussing tradeoffs and decisions.

Responsibilities

• Design, build, and maintain end-to-end ML pipelines from data ingestion to deployment and monitoring.
• Lead integration of large language models into product features, including prompt engineering and RAG.
• Choose approaches: foundation models via Bedrock, SageMaker, classical ML, or hybrid methods.
• Own ML features from design to deployment, including testing, observability, and post-launch monitoring.
• Contribute to technical design discussions and tradeoff analyses across ML architecture and tooling.
• Debug ML systems across training, data pipelines, latency, and drift issues.
• Write clean, production-quality ML code and participate in code reviews.
• Mentor junior/mid engineers through pairing and knowledge sharing on ML topics.
• Collaborate with Product/Data Science/Frontend-Backend teams to deliver AI features.
• Address data quality gaps, model reliability issues, and ML tech debt proactively.

Skills

Python

ML fundamentals

AWS knowledge

LangChain

Communication

Education

Bachelor's degree in CS or related field

Tools

AWS Bedrock

SageMaker

PyTorch

TensorFlow

HuggingFace

MLflow

W&B

Terraform

Docker

Job description

Overview

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 world’s 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. We’re looking for talented team members who want to Dream. Do. Grow. with us. An important part of the Toyota family is Toyota Financial Services (TFS), the finance and insurance brand for Toyota and Lexus in North America. While TFS is a separate business entity, it is an essential part of this world-changing company- delivering on Toyota's vision to move people beyond what's possible. At TFS, you will help create best-in-class customer experience in an innovative, collaborative environment.

Toyota does not offer support or sponsorship of job applicants for employment-based visas or any other work authorization for this role now or in the future. You must have the right to work in the United States and not require Toyota support or sponsorship for immigration-related employment (e.g., H-1B, O-1, E-3, H-1B1, TN, F-1 OPT, F-1 STEM, OPT, F-1 CPT, ‘job flexibility benefits’ [also known as I-140 or Adjustment of Status portability], etc.) now or in the future. You should not apply for this role if you will require Toyota to assist with immigration support or sponsorship now or in the future.

Who we're looking for

At TFS, we're building next-generation products that redefine mobility for millions of customers worldwide. We're looking for a Lead Engineer in ML/AI — an individual contributor who combines strong machine learning fundamentals with the engineering discipline to ship production-grade intelligent systems on AWS. You're past the point of running experiments in notebooks. You think end-to-end: from data and model design to deployment and monitoring, and you help the team move faster by raising the quality and reliability of every ML system you touch. You're starting to shape technical direction, not just execute it — and you're ready to be the go-to person on your team for applied AI.

What you'll be doing

• Design, build, and maintain end-to-end ML pipelines — from data ingestion and feature engineering to model training, evaluation, deployment, and monitoring
• Lead the integration of large language models into product features, including prompt engineering, retrieval-augmented generation (RAG), and agent-based patterns
• Select and apply the right approach for each problem: foundation models via Amazon Bedrock, custom training on SageMaker, classical ML, or hybrid approaches
• Take ownership of ML features from design through deployment — including testing, observability, and post-launch monitoring
• Participate actively in technical design discussions, contributing well-reasoned proposals and tradeoff analysis across ML architecture and tooling choices
• Debug and troubleshoot complex issues across ML systems — from training instabilities and data pipeline failures to inference latency and model drift
• Write clean, production-quality ML code and hold a high bar in code reviews
• Mentor junior and mid-level engineers through pairing, code reviews, and knowledge sharing on ML/AI topics
• Collaborate with Product, Data Science, and Front-End/Backend Engineering teams to deliver AI-powered features
• Identify and address data quality gaps, model reliability issues, and ML-specific tech debt proactively

What you bring

• Bachelor's degree in Computer Science, Machine Learning, Statistics, or related field, or equivalent practical experience
• 5+ years of software engineering experience, including 2–4 years focused on ML/AI in production
• Solid understanding of machine learning fundamentals: supervised and unsupervised learning, deep learning architectures (transformers, CNNs, RNNs), optimization techniques, and evaluation methodologies
• Hands-on experience with large language models: prompt engineering, RAG pipelines, embedding models, vector databases, and agent frameworks (LangChain, LlamaIndex, or similar)
• Experience working with AWS AI/ML services, including: Amazon Bedrock for foundation model access and knowledge bases, orAmazon SageMaker for model training, hosting, and MLOps pipelinesLambda and Step Functions for orchestrating inference workflowsS3 for data storage and model artifact managementEventBridge, SQS, or SNS for event-driven ML pipelinesOpenSearch or similar for vector search and semantic retrieval
• Strong proficiency in Python — you write production-quality ML code, not just notebooks
• Experience with core ML frameworks: PyTorch, TensorFlow, or JAX, and libraries like Hugging Face Transformers, scikit-learn, and XGBoost
• Familiarity with MLOps practices: experiment tracking (MLflow, W&B), model registries, and CI/CD for ML workflows
• Experience with data engineering fundamentals: ETL pipelines, feature stores, data validation, and working with structured and unstructured data
• Understanding of Infrastructure as Code using AWS CDK, CloudFormation, or Terraform for ML infrastructure
• Experience with observability and monitoring for ML systems: model performance tracking, data drift detection, and alerting
• Clear communicator — comfortable discussing model tradeoffs and technical decisions with teammates and stakeholders

Added bonus if you have

• Master's degree in Machine Learning, AI, Computer Science, Statistics, or related field
• Experience in the financial services, banking, or insurance industry
• Experience with responsible AI: fairness metrics, bias detection, explainability (SHAP, LIME), and model governance
• Familiarity with NLP beyond LLMs (named entity recognition, document understanding, OCR)
• Exposure to real-time inference optimization: quantization, distillation, ONNX, or latency-sensitive serving
• Experience with containerized ML workloads (ECS Fargate, Docker) for training and serving
• Exposure to computer vision or multi-modal architectures combining text, image, and structured data
• Familiarity with GraphQL or API gateway patterns for exposing ML services to backend consumers
• AWS certifications (Machine Learning Specialty, Developer Associate, or Cloud Practitioner)
• Experience contributing to open-source ML projects

What we'll bring

• A work environment built on teamwork, flexibility, and respect
• Professional growth and development programs to help advance your career, as well as tuition reimbursement
• Team Member Vehicle Purchase Discount
• Toyota Team Member Lease Vehicle Program (if applicable)
• 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 (if applicable)
• 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)
• Relocation assistance (if applicable)

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.

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.

At Toyota, we don't just have a vision, but a group of talented, dedicated people who work hard every day to turn that vision into reality. Our mission is to build a future where everyone has the freedom to move. We believe that nothing is impossible. We have big dreams and persevere through any obstacles. We work together to create the future of mobility and make the world a better place.

Career Possibilities

Toyota is a place for people who dream big and are determined to make those dreams a reality. We encourage innovation and look for people who will challenge the status quo in order to make the world a better place. We thrive on teamwork and collaboration and know diverse backgrounds, experiences and perspectives are not only the right thing for our people, they are a business imperative. Together, we’re empowered to forge our own paths — to be agile, curious and embrace a growth mindset and immerse ourselves in situations to gain new perspectives and to inspire bold, innovative ways of thinking and working. Our success as a company is directly tied to our team members’ success, and our collective ability to give back to society through an unwavering commitment to delight our customers and make people’s lives better. If you want to be part of the next-generation of innovations that help keep the world moving, then join us. And let’s start our impossible, together.