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Fidelity Investments Logo Fidelity Investments · IT - Software Development

Principal Full Stack Software Engineer

United States, Merrimack · Job Posted April 22, 2026
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Job Description

Fixed Income Technology is looking for a Principal Full Stack Engineer to join the Trading Services team. As a member of our team, you will be working with product owners, UX designers, and business analysts to understand the UX designs and business requirements. Collaborate with Architecture, Data Services, and other Technology Teams and propose, design, develop and implement solutions that meet functional and non-functional requirements. Fully engaging in product quality plan efforts, including test case development, design and code reviews and regression testing. Manage Releases and be part of an on-call rotation to provide Level 3 production support for our applications. Actively contribute to evangelize engineering practices and the definition of source control strategy, performance strategy, environment strategy, and build and deployment pipelines. Guide, mentor other associates and be highly productive in an agile project delivery environment.

Job Responsibility

  • Working with product owners, UX designers, and business analysts to understand the UX designs and business requirements
  • Collaborate with Architecture, Data Services, and other Technology Teams and propose, design, develop and implement solutions that meet functional and non-functional requirements
  • Fully engaging in product quality plan efforts, including test case development, design and code reviews and regression testing
  • Manage Releases and be part of an on-call rotation to provide Level 3 production support for our applications
  • Actively contribute to evangelize engineering practices and the definition of source control strategy, performance strategy, environment strategy, and build and deployment pipelines
  • Guide, mentor other associates and be highly productive in an agile project delivery environment

Requirements

  • Bachelor’s degree in computer science, Mathematics, or Engineering or similar
  • 10+ Years of Experience in Software Engineering and 2+ years of experience as a Technical Lead
  • Experience designing and developing backend applications using Java (server-side) object-oriented programming skills
  • Experience in Microservices, Spring/SpringBoot and developing REST API’s
  • Experience designing and developing User Interface application using programming skills such as HTML, CSS/SCSS, JavaScript, TypeScript, Node and Angular
  • Experience in Micro front-end architecture and modular design
  • Experience in messaging frameworks such as Kafka
  • Experience with CI/CD tools, frameworks, and methodologies like Jenkin, Maven, Blue/Green etc
  • Experience with Jmeter, JUnit, Jest, Cypress, Playwright or similar frameworks
  • Experience working in public cloud platforms, preferably AWS, knowledge of Docker, EKS, serverless architecture is a plus
  • Knowledge of SQL development and PLSQL procedures
  • You are a fast learner and an excellent teammate
  • You can efficiently work on a small development team, as well as lead in-depth technical designs
  • You are self-motivated, guided, and have a strong customer focus and results oriented approach
  • You have strong written and verbal communication skills to successfully engage with the technical team
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