María Macarena Peche Irissarry
Verified Expert in Engineering
Back-end Engineer and Developer
Seville, Spain
Toptal member since October 30, 2024
Macarena is an experienced back-end engineer with a strong foundation in Ruby on Rails (RoR), PostgreSQL, GraphQL, and Apache Kafka. She has a proven track record in delivering high-impact technical solutions, optimizing system performance, and leading cross-functional team projects, consistently improving customer experiences and driving product innovation. With a PhD in mathematics and a teaching background, Macarena is an adaptable, proactive, and fast learner.
Portfolio
Experience
- Ruby - 3 years
- GraphQL - 3 years
- PostgreSQL - 3 years
- Ruby on Rails 7 - 3 years
- APIs - 3 years
- Apache Kafka - 3 years
- Agile - 3 years
- Object-oriented Programming (OOP) - 3 years
Preferred Environment
Ruby, GraphQL, PostgreSQL, Apache Kafka, Jira, Slack, Ruby on Rails (RoR)
The most amazing...
...project I've led optimized Toptal's client conversion flows and data synchronization, boosting efficiency and reliability for thousands of active users daily.
Work Experience
Back-end Software Engineer
Toptal
- Led product initiatives to optimize the client signup flow.
- Implemented dynamic time slot allocation for callback requests, introduced a subscription signup modality, and led a cross-team project to automate enterprise client's handover to Salesforce.
- Handled cross-team technical initiatives to address technical debt, including API performance optimizations and standardized GraphQL code implementation, ensuring consistency and maintainability across the platform.
- Drove cross-team technical and product initiatives using Ruby on Rails (RoR), PostgreSQL, and GraphQL to enhance data synchronization tools, leveraging Apache Kafka's event-driven architecture to improve real-time data handling across services.
- Actively monitored system performance and managed bug tracking through Sentry and Grafana, swiftly identifying and resolving critical production and staging issues to ensure platform stability.
Full-stack Engineer
InterMatia
- Led the development of InterMatia, an online platform offering interactive math exercises for secondary and pre-university education.
- Implemented back-end (PHP) and front-end (JavaScript, CSS, and jQuery) solutions for a battery of randomized mathematical exercises with step-by-step solutions.
- Collaborated with educational experts to deliver high-quality content tailored to student needs.
- Resolved production issues, ensuring smooth platform functionality for users.
Experience
InterMatia
http://www.intermatia.comTwitter Demo
https://github.com/macarenapeche/twitter-demoEducation
PhD in Mathematics
Université Pierre et Marie Curie - Paris, France
Master's Degree in Mathematics
Université Pierre et Marie Curie - Paris, France
Bachelor's Degree in Mathematics
Universidad de Sevilla - Sevilla, Spain
Certifications
The Complete SQL Bootcamp: From Zero to Hero
Udemy
TopAcademy Ruby Web Development Internship
Toptal
JavaScript Algorithms and Data Structures
FreeCodeCamp
Skills
Libraries/APIs
GraphQL API, Sidekiq, jQuery
Tools
Sentry, Grafana, Jira, Slack, RSpec
Languages
Ruby, GraphQL, SQL, PHP, JavaScript, HTML
Frameworks
Ruby on Rails 7, Ruby on Rails (RoR), Ruby on Rails 6
Paradigms
Agile, Object-oriented Programming (OOP), REST, Test-driven Development (TDD), Kanban
Storage
PostgreSQL
Platforms
Apache Kafka
Other
APIs, Analytical Thinking, Algebra, Number Theory, Geometry, Mathematics
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