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# Principal Full Stack Engineer

- **Company:** State Auto
- **Location:** Portsmouth, NH, United States
- **Experience:** Expert
- **Salary:** $120,000.0
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), JavaScript (Programming Language), Application Programming Interfaces (APIs), Agile Methodology, Automation of Tests, Computer Programming, Continuous Integration, Data Structures, Relational Databases, Software Debugging, Dependency Injection, Software Design Patterns, Github, Hibernate (Java), Java Persistence API, JSON, Lex (Software), PostgreSQL, MySQL, Node.Js, Object-Oriented Software Development, Oracle (Applications), Performance Tuning, Scrum Methodology, Software Engineering, TypeScript, Openapi, Amazon Connect, Datadog, Multithreading, Test-Driven Development (TDD), ReactJS, Layered Systems, Grafana, Concurrency, Spring-boot, Software Application Programming, Git, Information Technology, Api Design, Restful APIs, Software Version Control, Docker
- **Published:** October 14, 2026
- **Apply:** https://www.careerjet.com/job/us56a39151e591701013e76e20c535909d/eaa

## About the Role

* Bachelor's Degree in technical discipline, preferably computer science or software development or equivalent experience.
 * Minimum 8 + years of Full Stack Development experience primarily using the following technologies in addition to Java: React, MobX, Semantic UI, MySQL, Oracle, Git, and Docker.
 * Experience with AWS services for IVR, e.g., Lex and Lambda, plus Amazon Connect.
 * Experience with API development using NodeJS and TypeScript/JavaScript
 * Experience with application observability tools, e.g., DataDog.
 * Extensive professional experience developing applications using Java (Java 8+ / 11 / 17).
 * Strong proficiency in object-oriented design, data structures, and design patterns.
 * Hands-on experience with Spring / Spring Boot, including RESTful services and dependency injection.
 * Experience building and consuming APIs (REST, JSON, OpenAPI).
 * Solid understanding of multithreaded programming, concurrency, and performance tuning.
 * Experience with relational databases (Oracle, PostgreSQL, MySQL) and ORM frameworks such as Hibernate/JPA.
 * Familiarity with CI/CD pipelines, automated testing, and version control (Git) and GitHub Actions.
 * Strong troubleshooting skills with the ability to debug and resolve complex issues in production systems.
 * A design thinking, test-driven development, and shift-left mindset.
 * Ability to mentor others and raise a team's technical capabilities.
 * Hands-on involvement with layered systems architectures, designs and shared software concepts.
 * Experience working in an agile environment.
 * Excellent negotiation, facilitation and consensus-building capabilities.
 * Strong leadership, coaching and mentoring skills.
 * Proven ability to speak to varying levels of the organization and successfully collaborate across the organization.
 * Ability to work collaboratively with Agile methodologies (Scrum, Kanban) and cross-functional teams (Product Owners, Software Engineers, Test Engineers) to drive technology decisions and support engineering excellence.
 * Openness and adaptability to respond to fast-moving circumstances.
 * Excellent oral and written communication skills.Aptitude for working in teams.