Job Description:

Principal AI Engineer

The Role

The Workplace Investing AI Delivery Engineering Team is seeking a Principal AI Engineer with deep expertise in Generative AI Retrieval-Augmented Generation (RAG) prompt engineering prompt tuning and model fine this role you will architect implement and scale GenAI solutions leveraging AWS cloud services.

You will partner closely with data scientists other AI & ML engineers and product teams to build enterprise grade GenAI platforms including vector search retrieval pipelines model orchestration evaluation frameworks and responsible AI guardrails.

This is a hands on technical leadership role involving engineering strategy solution architecture mentoring and end to end implementation.

The Expertise and Skills You Bring

Required Technical Expertise

Generative AI designing building and deploying solutions using LLMs embedding models and multimodal models.

RAG Systems experience with vector databases embeddings chunking strategies retrieval pipelines query transformation and evaluation frameworks.

Prompt Engineering & Prompt Tuning designing prompt patterns optimizing LLM interactions and applying lightweight tuning (e.g. LoRA PEFT).

Experience working with Intelligent Document Processing systems

Significant experience with AWS Machine Learning Stack SageMaker Bedrock Lambda AWS Step Functions EC2/EKS IAM API Gateway S3 RDS

MLOps & GenAIOps CI/CD pipelines model hosting monitoring evaluation observability and automated deployment workflows.

Data Engineering (7 years) designing and automating complex pipelines with structured and unstructured data; strong SQL; orchestration via Airflow or similar.

API Development (7 years) building scalable microservices in Java/Spring Boot and/or Python; Angular experience is a plus.

Leadership & Collaboration

Proven track record as a technical leader influencing architecture engineering patterns and GenAI best practices.

Experience mentoring engineers and driving cross-team alignment on AI/ML delivery.

Strong communication skills with ability to partner with non-technical stakeholders.

The Team

Fidelitys Workplace Investing business is one of the nations leading providers of employer-sponsored retirement plans. Behind every retirement account are operations teams navigating complex regulations processing participant requests and helping employers maintain compliant plans. Our mission is to transform retirement plan administration through automating document processing participant inquiries and plan sponsor support that currently require manual intervention.

Youll join an agile squad dedicated to building production GenAI systems that revolutionize how we serve plan participants and sponsors. The team includes AI/ML engineers with a mix of senior and mid-level talent data scientists focused on model development and business impact data engineers building pipelines for unstructured data and product manager partnering on roadmap and delivery.

Company Overview

At Fidelity we are passionate about making our financial expertise broadly accessible and effective in helping people live the lives they want! We are a privately held company that places a high degree of value in creating and nurturing a work environment that attracts the best talent and reflects our commitment to our associates. We are proud of our diverse and inclusive workplace where we respect and value our associates for their unique perspectives and experiences. For information about working at Fidelity visit . Fidelity Investments is an equal opportunity employer.

Fidelity will reasonably accommodate applicants with disabilities who need adjustments to complete the application or interview process. Please email us at or call prompt 2 option 2 if you would like to request an accommodation.

Certifications:

Category:

Most roles at Fidelity are Hybrid requiring associates to work onsite every other week (all business days M-F) in a Fidelity office. This does not apply to Remote or fully Onsite roles. Some roles may have unique onsite requirements. Please consult with your recruiter for the specific expectations for this position.

Please be advised that Fidelitys business is governed by the provisions of the Securities Exchange Act of 1934 the Investment Advisers Act of 1940 the Investment Company Act of 1940 ERISA numerous state laws governing securities investment and retirement-related financial activities and the rules and regulations of numerous self-regulatory organizations including FINRA among others. Those laws and regulations may restrict Fidelity from hiring and/or associating with individuals with certain Criminal Histories.