Principal Full Stack Java Engineer; REST, AWS, Kafka, Python

Position: Principal Full Stack Java Engineer (REST, AWS, Kafka, Python)
Fidelity will not provide immigration sponsorship for this position.

Job Description:

The Role

The Person alization (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, Dev Ops, and system design.

The Expertise and Skills You Bring 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, No

SQL and Analytical databases, including PostgreSQL, DynamoDB, Elasticsearch, Elasti Cache, 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 (Type Script)
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 Dev Ops automation

Foster a culture of innovation, accountability, and continuous improvement

Promote an AI-first engineering mindset using AI-assisted tools and intelligent automation

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…