Senior Fullstack Gen AI Engineer

Magnit Direct Sourcing on behalf of Toyota is currently hiring for a Senior Fullstack Gen AI Engineer for a temporary assignment in Plano, TX. This position is a 6-12 month contract assignment. The pay range for this role is between $100.00/hr - $110.00/Hr. Benefits: Medical, Dental, Vision, 401K. Who we are Collaborative. Respectful. A place to dreamanddo. 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 diverse, talented team members who want to Dream. Do. Grow. with us. What we’re looking for Toyota Financial Services is seeking a Senior GenAI Engineer Initiatives to drive the design of secure, scalable, and modern applications, with a strong emphasis on AI and GenAI-enabling technologies. This is a senior-level individual contributor role within the Architecture organization, focused on delivering hands-on solution designs and proofs of concept that bring innovative ideas to life. You will work closely with Domain Architects, product teams, and engineers to solve real business problems by developing good scalable GenAI Solutions. What you’ll be doing • Design scalable and robust GenAI architectures using LLMs, multimodal models, and retrieval-augmented generation (RAG). • Fine-tune foundation models using domain-specific data. • Implement prompt engineering, instruction tuning, and reinforcement learning from human feedback (RLHF). • Integrate GenAI capabilities into enterprise platforms using APIs, SDKs, and orchestration tools. • Implement responsible AI practices including bias detection, hallucination mitigation, and explainability. • Monitor and optimize model performance, latency, and cost. • Use techniques like quantization, distillation, and caching to improve efficiency. • Stay ahead of GenAI trends and emerging technologies. • Drive experimentation with new models, agents, and frameworks (e.g., LangChain, LlamaIndex, OpenAI, Anthropic, etc.). • Ensure compliance with data privacy, security, and regulatory standards. • Evaluate and select appropriate model types (open-source vs proprietary) based on business needs. • Lead hands-on solution evaluations, prototypes, and proofs of concept, especially for initiatives involving AI, GenAI, and emerging technologies • Make informed architectural trade-offs based on business needs, performance, cost, and long-term maintainability • Contribute reusable patterns and documentation that support solution delivery across teams • Stay informed on trends in cloud services, architecture frameworks, and GenAI tooling Qualifications/ What you bring (Must Haves) – Highlight Top 3-5 skills • 10+ years of software engineering and development experience • Proven experience in building and deploying GenAI applications in production. • Strong programming skills in Python and familiarity with GenAI libraries (Transformers, LangChain, Hugging Face, etc.). • Deep understanding of LLMs, embeddings, vector databases (e.g., FAISS, Pinecone, Weaviate). • Experience with cloud platforms (AWS, Azure, GCP) and containerization (Docker, Kubernetes). • Familiarity with CI/CD for ML workflows and versioning tools like MLflow or DVC. • Knowledge of prompt engineering, few-shot learning, and agent-based systems. • Hands-on experience designing and building cloud-native solutions (preferably on AWS) • Experience with modern architecture styles: microservices, APIs, event-driven systems • Strong ability to articulate technical solutions, trade-offs, and system behavior to both technical and non-technical stakeholders Added bonus if you have (Preferred): • Exposure to GenAI tools and frameworks (e.g., LLMs, vector databases, prompt orchestration, LangChain, Bedrock) • Familiarity with AWS AI/ML services (e.g., SageMaker, Bedrock, Comprehend, Lex) • AWS AI certification • Financial Services experience Talented, dedicated people are an integral part of our mission to build the best workforce, working together to create the future of mobility and make the world a better place. We are always on the lookout for diverse, driven, and collaborative talent interested in performing contract work for Toyota. Magnit is an equal opportunity employer, and all applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability, or protected veteran status. QUALIFICATION/LICENSURE Work Authorization :Green Card, US Citizen Preferred years of experience :5 years Travel required :No travel required Shift timings :9 AM to 5 PM