Principal Full Stack Engineer

Soteria Reinsurance Ltd.; Durham (NC); On-site; USD 140,000 - 190,000; Full time

Job summary

Fidelity Investments in Durham, NC seeks a Principal Full Stack Engineer to design and develop cloud-native applications in an Agile setting. You will drive CI/CD, convert monoliths to microservices, and implement scalable architectures using Java, Kafka, AWS, and modern tooling.

Collaboration across teams and mentoring are key aspects of the role. The candidate will contribute to complex financial software solutions, improving performance and reliability, with hands-on coding and architecture

Qualifications

• Proven experience building high-throughput, scalable portfolio construction and management applications.
• Experience with CI/CD, containerization, and cloud-native architectures in a financial services context.
• Strong knowledge of Java, Spring Boot, Kafka, and related tech in Agile environments.

Responsibilities

• Writes clean, testable, and maintainable code for portfolio construction modules.
• Converts legacy monoliths to microservices-based architectures.
• Defines and implements application-level architecture and project plans.
• Ensures QA readiness of software deliverables and develops comprehensive documentation.
• Mentors junior team members and collaborates across multiple projects.

Skills

High-throughput systems

Fault-tolerant design

Concurrent batch processing

Agile methodologies

Mentoring

Code reviews

Education

Bachelor’s degree in Computer Science/Engineering/IT/IS

Master’s degree in Computer Science/Engineering/IT/IS

Tools

Jenkins

Docker

Datadog

JProfiler

AWS

Kubernetes

Job description

## Principal Full Stack EngineerApplylocations: Durham, NCtime type: Full timeposted on: Posted Todaytime left to apply: End Date: September 8, 2026 (30+ days left to apply)job requisition id: 2133121## ## Job Description:**Note: Fidelity will not provide immigration sponsorship for this position.****Position Description**:Performs cloud-native application design and development in an Agile software delivery environment. Automates the integration of code changes from multiple contributors into a single software project through the use of Continuous Integration and Continuous Development (CI/CD) practices and open-source platforms. Uses component-based frameworks (Angular and J2EE) to build scalable web applications via HTML, CSS/SCSS, and JavaScript. Buids and maintains enterprise cloud enabled distributed systems. Participates in design reviews and code reviews. Enhances software engineering practices in the areas of Acceptance Test-Driven Development (ATDD). Uses business knowledge to translate the vision for divisional initiatives into business solutions by developing complex or multiple software applications and conducting studies of alternatives. Analyzes and recommends changes in project development policies, procedures, standards, and strategies to development experts and management.**Primary Responsibilities:*** Writes clean, testable, readable, and easily maintainable code.* Converts legacy monolithic architecture to a microservices-based architecture.* Defines and implements application-level architecture.* Develops applications on complex projects, components, and subsystems for the division.* Responsible for QA readiness of software deliverables.* Develops comprehensive documentation for multiple applications or subsystems.* Establishes full project life cycle plans for complex projects across multiple platforms.* Advises on risk assessment and risk management strategies for projects.* Plans and coordinates project schedules and assignments for multiple projects.* Acts as a primary liaison for business units to resolve various project/technology issues.* Provides technology solutions to daily issues and technical evaluation estimates on technology initiatives.* Mentors junior team members.* Performs independent and complex technical and functional analysis for multiple projects supporting several divisional initiatives.* Develops original and creative technical solutions to on-going development efforts.**Education and Experience**:Bachelor’s degree in Computer Science, Engineering, Information Technology, Information Systems, or a closely related field (or foreign education equivalent) and five (5) years of experience as a Principal Full Stack Engineer (or closely related occupation) developing portfolio construction solutions leveraging Java, Kafka, AWS, and advanced portfolio optimization technologies within a financial services environment.Or, alternatively, Master’s degree in Computer Science, Engineering, Information Technology, Information Systems, or a closely related field (or foreign education equivalent) and three (3) years of experience as a Principal Full Stack Engineer (or closely related occupation) developing portfolio construction solutions leveraging Java, Kafka, AWS, and advanced portfolio optimization technologies within a financial services environment.**Skills and Knowledge**:Candidate must also possess:* Demonstrated Expertise (“DE”) developing high-throughput, fault-tolerant, and highly concurrent batch processes, and scalable middle-tier web services for portfolio construction and management; administering message-based middleware, working with stateful applications, analyzing complex financial data across relational databases, and coordinating batch scheduling and vendor-driven portfolio optimizations; and implementing domain specific business rules using Java, Spring Boot, Groovy, Python, JMS, Kafka, JPA, myBatis, Oracle, PL/SQL, Autosys, and Axioma.* DE analyzing requirements and large interconnected data models to build full stack portfolio construction and management applications in accordance with Agile methodologies and Atlassian tools (JIRA); and identifying automation ready requirements using Behavior-Driven Development (BDD) and Acceptance Test Driven Design (ATDD) techniques with Spock, JUnit, Cypress, PACT, and WireMock.* DE participating in and providing coaching throughout the full Software Development Lifecycle (SDLC) -- migrating and optimizing Continuous Integration/Continuous Delivery (CI/CD) pipelines, supporting storage, and performing source code and structures management using Jenkins, MCADS, and AWS hybrid Cloud frameworks (S3, DynamoDB, EKS and Lambda) as well as Git and Maven.* DE monitoring, profiling, and troubleshooting performance issues in portfolio construction and management applications using Datadog, JProfiler, Java VisualVM, and JConsole; developing baseline behavioral profiles for alerting and monitoring; planning operational and performance optimizations using jMagic; and performing performance assessments and enabling dynamic instance scaling using AWS EC2, EKS, and ECS as well as Docker, aligned with DevOps methodologies.#PE1M2#LI-DNIFidelity’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.## ## Certifications:## ## Category:## Information TechnologyPlease 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.