Principal Software Engineer/Developer
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Principal Software Engineer/Developer
Location
Westlake, TX
Experience
Senior
Posted
Jul 10, 2026
Apply by
August 5, 2026
Applicants
0
Early applicantEasy applyFull-timeWork from Office
Job Description
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## Job Description:
Position Description:
Defines test strategy and applies test automation skills to design, develop, test, deploy, maintain, and improve active trader desktop experience across both Mac and Windows. Builds, debugs, tests and supports Dotnet based desktop applications. Maintains product test repository and releases regression test planning using test case management tools like X-Ray (Jira). Conducts desktop test automation using Python automation frameworks. Supports the team in designing reliable, accurate tests, and integrating them into Continuous Integration/Continuous Deployment (CI/CD) pipelines. 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:
- Participates in architecture design teams.
- Defines and implements application-level architecture.
- Develops applications on complex projects, components, and subsystems for the division.
- Recommends development testing tools and methodologies and reviews and validates test plans.
- 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.
- Responsible for meeting project goals on time and on budget.
- 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.
- Advises senior management on technical strategy.
- 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 (or foreign education equivalent) in Computer Science, Engineering, Information Technology, Information Systems, Mathematics, Physics, or a closely related field and five (5) years of experience as a Principal Software Engineer/Developer (or closely related occupation) designing, building, and testing high transaction, low error tolerance web applications using Selenium, TestNG, Cypress, and Node in a financial services environment.
Or, alternatively, Master’s degree (or foreign education equivalent) in Computer Science, Engineering, Information Technology, Information Systems, Mathematics, Physics, or a closely related field and three (3) years of experience as a Principal Software Engineer/Developer (or closely related occupation) designing, building, and testing high transaction, low error tolerance web applications using Selenium, TestNG, Cypress, and Node in a financial services environment.
Skills and Knowledge:
Candidate must also possess:
- Demonstrated Expertise (“DE”) designing and implementing responsive front-end applications to enhance user experience using Node.js, React, Angular, HTML5, CSS3, and JavaScript; developing microservices using Java, REST, Python and Spring Boot; modernizing and validating legacy financial mainframe platforms using Selenium, Cypress, or Unified Functional Testing (UFT); and developing and validating Microservices and Serverless technologies for trade processing using Postman, SOAP UI, and Rest Assured to improve system performance and trade processing times.
- DE designing quality assurance and testing strategy (with manual testing and automation for Investment Banking applications) to be used for order, asset, and wealth management using Selenium, Cypress, Automation Anywhere, or UFT; and coordinating with stakeholders to design and monitor quality assurance metrics using tools Asset and Liability Management (ALM), QC, Jira, CCS, Version One, and Team Foundation Server (TFS).
- DE performing automation framework development and enhancement using Selenium, Cypress, Visual Studio TFS, IDE tools (IntelliJ or Eclipse), and frameworks (TestNG, Cucumber, and NUnit) to validate high transaction, low error tolerance financial applications including, order management, account creation, and asset management; designing and executing Automation Test scripts using Selenium WebDriver, Cypress, and Junit; automating test cases using Jasmine and Karma testing frameworks; and building and maintaining testing processes (integration, system, regression, smoke, acceptance, end to end, database, API, ETL, load, and browser compatibility testing) to ensure application quality.
- DE performing Cross-Team Collaboration and DevOps Integration to implement CI/CD pipeline and maintain DevOps processes using Jenkins CI pipelines, UDeploy, Docker, Kubernetes, Github, and Gitlab; building automated testing suites (including unit, integration, and end-to-end) to test and enable use of testing frameworks, tools, and methodologies using Cypress, Selenium, QTP/UFT, SOAP UI, Postman, or Automation Anywhere; coordinating microservices architecture implementation by establishing standardized API documentation and communication protocols using Confluence, SharePoint, and KB articles; and architecting a scalable microservices ecosystem using Spring Cloud, Datadog, Splunk, and Jira.
#PE1M2
#LI-DNI
Fidelity’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.
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## Certifications:
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## Category:
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Information Technology
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.
Key Responsibilities
- Define test strategy and apply test automation skills to design, develop, test, deploy, maintain, and improve active trader desktop experience.
- Build, debug, test, and support Dotnet based desktop applications.
- Maintain product test repository and release regression test planning using test case management tools like X-Ray (Jira).
- Conduct desktop test automation using Python automation frameworks.
- Support the team in designing reliable, accurate tests and integrating them into CI/CD pipelines.
- Translate vision for divisional initiatives into business solutions by developing complex software applications.
- Analyze and recommend changes in project development policies, procedures, standards, and strategies.
- Participate in architecture design teams and define application-level architecture.
- Develop applications on complex projects, components, and subsystems.
- Recommend development testing tools and methodologies and review and validate test plans.
- Ensure QA readiness of software deliverables.
- Develop comprehensive documentation for multiple applications or subsystems.
- Establish full project life cycle plans for complex projects across multiple platforms.
- Meet project goals on time and on budget.
- Advise on risk assessment and risk management strategies for projects.
- Plan and coordinate project schedules and assignments for multiple projects.
- Act as a primary liaison for business units to resolve various project/technology issues.
- Provide technology solutions to daily issues and technical evaluation estimates on technology initiatives.
- Advise senior management on technical strategy.
- Mentor junior team members.
- Perform independent and complex technical and functional analysis for multiple projects.
- Develop original and creative technical solutions to on-going development efforts.
Requirements
- Bachelor’s degree in Computer Science
- Engineering
- Information Technology
- Information Systems
- Mathematics
- Physics
- or a closely related field
- Master’s degree in Computer Science
- Engineering
- Information Technology
- Information Systems
- Mathematics
- Physics
- or a closely related field
Skills Required
DotnetPythonSeleniumTestNGCypressNode.jsReactAngularHTML5CSS3JavaScriptJavaRESTSpring BootPostmanSOAP UIRest AssuredAutomation AnywhereUFTJiraCI/CDJenkinsDockerKubernetesGithubGitlabConfluenceSharePointSpring CloudDatadogSplunkJunitCucumberNUnitJasmineKarmaVisual StudioIntelliJEclipseUnified Functional TestingMicroservicesServerlessAPI TestingETLLoad TestingBrowser Compatibility TestingCross-Team CollaborationDevOps IntegrationRisk AssessmentRisk ManagementMentoringCommunicationProblem Solving
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