Fidelity

Principal, Full Stack Engineer (Node, Python, Angular/ React)

Fidelity
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1 day ago
Covington, KY, USAStaff+

Responsibilities

  • Design, build, deploy, and support scalable runtime services, platforms, and applications for AI-enabled experiences.
  • Develop backend services using Node.js and Python and build enterprise-grade conversational and interactive user interfaces.
  • Create reliable operational practices covering monitoring, alerting, incident response, reliability, safety, and repeatability.
  • Design and consume versioned, documented APIs and structured service contracts.
  • Build and deliver solutions on a Scrum team serving multiple business units.
  • Help teams operationalize GenAI use cases, including evaluation, observability, guardrails, cost, performance, and reliability considerations.
  • Provide technical guidance through code reviews, design discussions, and knowledge sharing.

Requirements

  • Broad experience across the full software development and delivery lifecycle, including design, implementation, testing, deployment, and ongoing support.
  • Strong proficiency in Node.js and Python for scalable, maintainable backend services.
  • Experience with React or Vue and front-end testing frameworks such as Jest, Cypress, or Playwright.
  • Hands-on experience with NoSQL data stores such as MongoDB, DynamoDB, or ElastiCache, including data modeling and performance optimization.
  • Experience with DevOps/SRE practices, monitoring, alerting, incident response, reliability engineering, and production systems.
  • Experience designing and consuming RESTful APIs, using service-oriented architecture, and applying object-oriented programming principles.
  • Familiarity with OpenAPI/Swagger and JSON-based service contracts, including versioning and documentation.
  • Exposure to AWS, GCP, or Azure, including cloud-native services, deployment pipelines, and distributed architectures.
  • Working knowledge of LLM concepts, RAG, embedding-based search, model evaluation, responsible AI, and observability for LLM applications.
  • Ability to synthesize business needs into scalable solutions, learn new technologies, collaborate across organizations, and work with product and data science teams.
  • Undergraduate degree such as a BS or BA, or equivalent work experience; relevant cloud, DevOps/SRE, or AI/ML certifications are preferred.

Benefits

  • Fidelity is transitioning to a full-time onsite working model through a phased rollout; onsite expectations vary by region and role and may evolve.
  • The transition does not apply to fully remote roles.

Tech Stack

Amazon DynamoDBAngularAWSAzureCypressGoogle Cloud PlatformJestMongoDBNode.jsPythonReactVue.js
Fidelity

About Fidelity

10,000+ employees

Fidelity Investments provides brokerage, retirement plan recordkeeping, wealth management, and asset management services to individuals, employers, advisors, and institutions, plus online trading platforms and mutual funds and ETFs. It earns fees from managing and administering assets, advisory services, and brokerage transactions. Founded in 1946 and headquartered in Boston, it is privately held and administers trillions of dollars for U.S. and global customers.

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