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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Full Stack Engineer - **Company:** THE FIT ALTERATIONS, INC. - **Location:** Westlake, TX, United States (Remote available) - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Agile Methodology, Amazon S3, Cloud Computing, Cloud Database, DevOps, Amazon DynamoDB, Java Platform Enterprise Edition (J2EE), Identity and Access Management, Spring Framework, JSON, OAuth, Scrum Methodology, Query Optimization, Role-Based Access Control, Swagger, Software Engineering, YAML, Data Logging, System Availability, Database Optimization, Spring-boot, AWS Lambda, Indexer, Information Technology, Restful APIs, Docker, Jenkins - **Published:** September 3, 2026 - **Apply:** https://www.themuse.com/jobs/fidelityinvestments/principal-full-stack-engineer-3874d2 ## About the Role Ideal candidates will have a background in Software Engineering with a strong desire to focus on building performant, high scale, highly available and resilient systems. We are looking for a Systems Thinking Engineer who, through extensive production insights, operational automation, developer guidance, real-time metrics, and automation will guide the team. The Expertise You Have and The Skills You Bring: * Bachelor's degree in computer science or equivalent experience. * 10 plus years of experience in designing and implementing full stack end-to-end customer-facing applications, financial industry experience a plus. * 7 plus years of experience working in complex architectural designs and technology initiatives. * 5 plus years of experience working in agile development environment (Scrum/Kanban). * Experience Handling INC management / Problem Management of Tier 0 platforms and driving 24x7 operational excellence * Extensive Knowledge of Java and Spring Framework and Spring Boot * Hands-on application development experience with Public Cloud environments: AWS - Lambda, EKS, S3, Dynamo DB, Kinesis * Deep understanding of modern authorization architectures, including RBAC, ReBAC, JWT-based authorization, and OAuth 2.0. * Proven track record of architecting fine-grained access control frameworks, scalable entitlement models, and enterprise-grade authorization systems that balance security, performance, and developer experience. Strong understanding of policy-based authorization patterns and distributed access management. Experience with OpenFGA or comparable ReBAC platforms is highly desirable * Designing and developing RESTful services using Java/J2EE, Spring Boot, Swagger, Docker, YAML, JSON. * Solid Understanding of DevOps CI/CD tools like Jenkins/ Jenkins Core. * Proven experience in maintaining scalability and resiliency in a complex environment. * In-depth understanding and experience with performance metrics, logging, monitoring, alerting, testing, and tuning for highly scalable cloud applications. * Proven experience in maintaining scalability and resiliency in a complex environment. * Proficient in working with Cloud Databases, creating and leading database objects like tables, views, indexes, Stored Procs and optimizing database performance through query tuning, indexing, analyzing performance reports. * Demonstrated expertise in Production support, including incident management, root cause analysis, real-time monitoring, and high availability and reliability of critical systems in a fast-paced environment. * Ability to triage, execute root cause analysis, and be decisive under pressure. ## Related Videos - [Next Level Enterprise Architecture: Modular, Flexible, Scalable, Multichannel and AI-Ready?](https://www.wearedevelopers.com/videos/1017-next-level-enterprise-architecture-modular-flexible-scalable-multichannel-and-ai-ready) - [CI/CD with Github Actions](https://www.wearedevelopers.com/videos/856-ci-cd-with-github-actions) - [Keeping applications secure by evolving OAuth 2.0 and OpenID Connect](https://www.wearedevelopers.com/videos/100152-keeping-applications-secure-by-evolving-oauth-2-0-and-openid-connect) - [Tips and Tricks for Working with JSON](https://www.wearedevelopers.com/videos/1229-tips-and-tricks-for-working-with-json) - [Inside Bitpanda's Tech Stack: Scaling a European Fintech Leader - Markus Dorner](https://www.wearedevelopers.com/videos/1979-inside-bitpanda-s-tech-stack-scaling-a-european-fintech-leader-markus-dorner) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) ## Related Articles - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer)