Julian Figueroa Jr.

Work

Frontend engineer with a data background. I build reliable, measurable things.

Skills

LanguagesPython, SQL, Java, JavaScript, TypeScript, Golang, HTML/CSS, C
Data & Analyticspandas, NumPy, Matplotlib, scikit-learn, Statistical Modeling, Predictive Modeling
DatabasesMongoDB, PostgreSQL, SQL
FrameworksReact, Angular, Node.js, Spring Boot, Django
ToolsGit, Jenkins, VS Code, Jupyter Notebook, Linux
OtherREST APIs, CI/CD, Systems Design, Agile/Scrum

Experience

Fidelity InvestmentsJune 2025 – Present · Hybrid

Associate Software Engineer

  • Build and maintain frontend data pipelines and components on fidelity.com, a platform serving 130M+ monthly visits, ensuring accurate data flow between marketing systems, analytics platforms, and customer-facing surfaces.
  • Implemented Floodlight conversion tags across a SPA, coordinating with vendors and analytics teams to instrument user behavior tracking and validate data accuracy end-to-end.
  • Collaborated cross-functionally with marketing, compliance, and engineering teams to deliver data-driven frontend solutions, translating business requirements into reliable, measurable implementations.
ExperianMay 2024 – Aug. 2024 · Remote

Analytical Programmer Intern

  • Automated preprocessing of 100M+ datapoint datasets using Python, reducing a manual analyst workflow by 33 hours per quarter through scripted data transformation and validation pipelines.
  • Migrated SAS data processing scripts to Python, achieving a 94% reduction in codebase size while maintaining output accuracy across 23 logistic regression models.
  • Managed end-to-end data loading and modeling workflows using SQL, ensuring data integrity and consistency across multiple model pipelines.
  • Contributed to a time-sensitive data migration prompted by Oracle's shutdown of its advertising business, reconciling and matching audience datasets across systems under deadline pressure.
Rice Data ScienceAug. 2023 – Nov. 2023 · Houston, TX

Data Science Mentor

  • Guided 10 students through Python, data preprocessing, and statistical modeling techniques, leading a project analyzing COVID's impact on the stock market using ARIMA on large datasets.
WorldStridesMay 2023 – July 2023 · Houston, TX

Live Tech Instructor

  • Instructed 500+ students in Python, machine learning, IoT, and Linux across a fast-paced technical curriculum.

Projects

Messaging AppAug. 2023 – Dec. 2023

Golang, TypeScript, MongoDB, REST APIs

  • Designed and implemented a document-based NoSQL database schema in MongoDB, self-studying the technology outside of coursework to own the data layer and meet team deliverables.
  • Built and exposed RESTful APIs in Golang, validated through unit and integration tests to ensure data consistency and reliability.
Fruit FightJan. 2024 – May 2024

React, TypeScript, HTML, CSS

  • Led a team of 5 through the full SDLC in Agile development, from design through deployment.
  • Developed and optimized frontend components and game state management using React and TypeScript.

Education

Rice UniversityHouston, TX · August 2025

B.A. Computer Science, Minor in Entrepreneurship

HSF Scholar — Hispanic Scholarship Fund recipient

ColorStack Fellow — advancing Black and Latino students in CS