Principal Full Stack Java Engineer (REST, AWS, Kafka, Python)

Job Description:

Note: Fidelity will not provide immigration sponsorship for this position.

The Personalization (PZN) Platform within Fidelity Brokerage is seeking a Principal Full Stack Engineer to lead the design and delivery of next-generation platform capabilities.

You will provide Technical leadership across frontend, backend, and cloud, driving scalable, reusable solutions and modernization initiatives aligned with enterprise standards. As a Technical leader, you will mentor engineers and champion best practices across development, DevOps, and system design.

The Expertise You Have

• 10 plus years of full stack engineering experience delivering scalable, enterprise-grade solutions
• Bachelor’s degree in Computer Science or a related field, with strong foundations in systems design, algorithms, and software engineering principles
• Proven ability to lead architecture and design decisions, evaluate trade-offs, and guide teams toward modern, maintainable solutions
• Strong object-oriented programming expertise using Java and Python
• Expertise in designing and developing RESTful services using Java, Spring Boot, Swagger/OpenAPI, and Docker
• Hands-on experience building cloud-native applications on AWS (Lambda, EKS, SQS, SNS, Kinesis, S3)
• Strong experience with relational, NoSQL and Analytical databases, including PostgreSQL, DynamoDB, Elasticsearch, ElastiCache, and Snowflake
• Experience with event-driven and streaming architectures using Kafka, Artemis, and Flink
• Exposure to modern frontend technologies such as Angular and Node.js (TypeScript)
• Proven expertise in microservices architecture, API development, and domain-driven design (DDD)
• Experience designing systems for high availability, resiliency, and performance at scale
• Experience implementing observability and monitoring solutions, including tracking code quality, API performance, cloud efficiency, and system health
• Exposure to AI/ML technologies, developer productivity tools, and automation frameworks
• Experience defining engineering standards, architectural patterns, and modernization strategies

The Skills You Bring

• You thrive in collaborative, team-based environments and enjoy solving complex, ambiguous problems
• You communicate clearly and effectively with engineers, product partners, and leadership stakeholders
• You demonstrate strong technical leadership and are passionate about coaching and mentoring engineers
• You have the ability to collaborate across distributed teams and influence key architectural decisions
• You bring curiosity, initiative, and a strong sense of ownership to your work

The Value You Deliver

• Lead design and delivery of core platform capabilities powering personalized experiences
• Translate business needs into scalable, high-quality solutions with architects and product leaders
• Improve performance, resiliency, and operational efficiency
• Drive modernization, reducing technical debt and enhancing developer productivity
• Mentor engineers and elevate technical excellence and engineering culture
• Accelerate delivery through platform reuse, standardization, and DevOps automation
• Foster a culture of innovation, accountability, and continuous improvement
• Promote an AI-first engineering mindset using AI-assisted tools and intelligent automation

About the Team

The PZN Platform team delivers next-generation digital capabilities that enable scalable, personalized, rule- and AI-driven, insight-led customer experiences. We build and operate highly available, cloud-native platforms that support planning, orchestration, and seamless integrations across multiple business domains.

Our team operates in a fast-paced Agile environment, partnering closely with architecture, product, and operations teams, as well as upstream and downstream systems, to deliver resilient and extensible solutions.

Fidelity’s Onsite Working Model
Fidelity is transitioning to a full-time onsite working model through a phased rollout across regions and roles. Currently, some roles and locations require 100% onsite presence, while others require less. Onsite expectations are likely to evolve as the rollout continues. This transition does not apply to fully remote roles.

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Please be advised that Fidelity’s 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.