Principal Full Stack Engineer

Posted:
4/7/2026, 3:13:08 PM

Location(s):
Texas, United States ⋅ Westlake, Texas, United States

Experience Level(s):
Expert or higher ⋅ Senior

Field(s):
Software Engineering

Workplace Type:
On-site

Job Description:

Position Description:

Architects, designs, and implements complex enterprise solutions on the Salesforce platform, using Apex, Lightning Web Components (LWC), Visualforce, SOQL, and Salesforce Application Programming Interfaces (APIs). Performs integration with external systems using RESTful services, middleware platforms, and event-driven architectures. Implements Continuous Integration/Continuous Deployment (CI/CD) pipelines for Salesforce development, using Git, Azure DevOps, Jenkins, and Salesforce DX. Architects and implements scalable, secure, and high-performance solutions on the Salesforce platform, using Apex, LWC, Visualforce, and declarative tools. Designs and develops custom integrations between Salesforce and external systems, using REST/SOAP APIs, middleware, and asynchronous messaging (Platform Events and Change Data Capture). Provides technical leadership across projects by setting development standards, guiding solution design, and ensuring alignment with architectural principles and best practices.

Primary Responsibilities:

  • Leads technical design sessions, produces detailed design documentation, and ensures alignment with enterprise architecture and data governance standards.
  • Optimizes applications for performance, scalability, and maintainability, including bulk data processing, caching strategies, and asynchronous operations.
  • Conducts code reviews and enforces coding standards.
  • Collaborates with business stakeholders, product managers, and UX designers to translate functional requirements into technical specifications.
  • Manages and extends Salesforce metadata, custom objects, permission sets, profiles, and shares rules to support complex business processes.
  • Develops and maintains automated test suites using Apex test classes and third-party testing frameworks to ensure code quality and coverage.
  • Monitors and troubleshoots production issues, performs root cause analysis, and implements long-term fixes and preventive measures.
  • Stays current with platform releases, features, and best practices, and evaluates their applicability to ongoing and future projects.
  • Mentors junior team members.
  • Participates in enterprise-wide initiatives -- data migration, organization consolidation, and Salesforce Center of Excellence (CoE) activities.

Education and Experience:

Bachelor’s degree in Computer Science, Engineering, Information Technology, Information Systems, Information Studies, Data Management and Analytics, 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) performing full stack software development for financial services applications through the integration of Salesforce CRM and Cloud-based technologies.

Or, alternatively, Master’s degree in Computer Science, Engineering, Information Technology, Information Systems, Information Studies, Data Management and Analytics, 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) performing full stack software development for financial services applications through the integration of Salesforce CRM and Cloud-based technologies.

Skills and Knowledge:

Candidate must also possess:

  • Demonstrated Expertise (“DE”) designing and developing enterprise-grade applications on the Salesforce platform, using Apex, Lightning Web Components (LWC), Visualforce, and SOQL; implementing custom business logic, asynchronous processing, and dynamic User Interface (UI) components; and integrating with external systems (Snowflake and Informatica) via RESTful APIs, using OAuth 2.0, JSON payloads, and custom-built middleware or Cloud-native integration services.

  • DE implementing CI/CD pipelines for Salesforce development using Git-based version control systems (GitHub and Bitbucket), Salesforce DX, and automation tools (Jenkins and Azure DevOps); managing scratch orgs, packaging metadata, and deploying across multiple environments; and performing automated testing using Apex test classes and static code analysis tools -- program mistake detector (PMD) for Apex, ECMAScript Linter (ESLint) for Lightning Web Components, and Salesforce CLI Scanner.

  • DE architecting and optimizing Salesforce solutions for performance and scalability, including bulk data processing, using batch Apex and Queueable Apex, caching strategies, and governor limit mitigation; designing data models with custom objects, relationships, and field-level security; and configuring sharing rules, permission sets, and profiles to support complex access control requirements, using Salesforce CLI Scanner, Salesforce Optimizer, Salesforce Schema Builder, and workbench or developer console.

  • DE producing solution design documents and Unified Modeling Language (UML) diagrams; conducting peer code reviews and technical walkthroughs; and ensuring compliance with enterprise architecture standards, secure coding practices, and Salesforce release management protocols.

#PE1M2

#LI-DNI

Certifications:

Category:

Information Technology

Most roles at Fidelity are Hybrid, requiring associates to work onsite every other week (all business days, M-F) in a Fidelity office. This does not apply to Remote or fully Onsite roles. Some roles may have unique onsite requirements. Please consult with your recruiter for the specific expectations for this position.

Please 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.

Fidelity Investments

Website: https://www.fidelity.com/

Headquarter Location: Boston, Massachusetts, United States

Employee Count: 10001+

Year Founded: 1946

IPO Status: Private

Last Funding Type: Secondary Market

Industries: Asset Management ⋅ Finance ⋅ Financial Services ⋅ Retirement ⋅ Wealth Management