Ronny A. Pena Email & Phone Number

San Francisco, California, Us

Creating a next-gen notification platform.

New York, Ny, Us

Key Accomplishments:- Led the growth of the engineering team from one to 13 members.- Evolved the architecture from a service polling model to an event-sourcing design with Kafka.- Significantly improved platform stability and eliminated weekly site-wide outages. Also, enhanced service availability from 99% uptime to 99.99% uptime for the User Service.- Successfully migrated all services from AWS EC2 to Kubernetes, resulting in more robust and efficient systems. - Improved the page rendering performance for the agent profile pages from an average p99 of 4.3 seconds to 0.4 seconds.- Successfully launched multiple products nationwide, boosting agent satisfaction and engagement.- Implemented various engineering practices, such as Agile development and test-driven development.Role:I managed two software engineering teams consisting of 13 members and multiple services and applications, including a tier-1 User Service, the Agent Profile Pages app on compass.com/agents, and ingestion and data processing pipelines for agent and client data.

New York, Ny, Us

Key Accomplishments:- Significantly improved the performance and reliability of the SSL/TLS certificate management system by reducing the average response time from 2 seconds to 50 milliseconds (ms).- Upgraded several edge services from a single data center design to a multi-data center design and automated data center failover for those services.- Boosted the cache hit rate for the HTML caching system from approximately 35% to about 50%.Role:I oversaw infrastructure services that handled over 18K requests per second (RPS) for roughly 2.5 million custom domains. Specifically, I managed an L7 software load balancer and router, an HTML caching system, an SSL/TLS certificate management system, and an OCSP stapling service. Some of my key responsibilities included leading a team of five software engineers, providing mentoring and coaching for new hires and recent graduates, defining the technical roadmap for the team, conducting code and design reviews, managing Jira planning, conducting performance evaluations, and handling technical interviews.

New York, Ny, Us

Key Accomplishments:- Led the technical design, design patterns, and code development for the backend core of the Email Campaigns product, which was Squarespace's first fully-featured customer-facing application outside of the monolith.- Successfully delivered the "PayPal integration for Online Stores" product feature.- Contributed to a working group that enabled authentication for microservices.- Worked on developing the Gift Card feature for the commerce product.- Helped transition parts of the order processing system from a monolith to microservices.Role:I provided technical leadership for the Email Campaigns (Email Marketing) product and eCommerce platform (Online Stores). As part of this work, I implemented various product features, defining system design, REST API, and database models.Technologies used:Back-end: Java 8, Spring Cloud / Boot, REST, Microservices, MongoDB, PostgreSQL, RabbitMQ, Memcached, Redis, etc.Front-end: JavaScript (ES6), ReactJS, LESS, CSS, etc.

Amsterdam, Nl

Key Achievements:- Successfully delivered 5 major releases of the Backbase portal server application suite.- Developed microservices architecture-based custom projects for clients, utilizing technologies such as Spring Cloud, Spring Boot & MVC for REST APIs, Redis for distributed caching, Apache Lucene for searching, Spring Data & MongoDB for NoSQL datastore, and SOAP for 3rd-party integration.- Improved the performance of the portal server product by increasing its request per second capacity by 3000%, utilizing AWS, jMeter, jProfiler, code analysis, caching, streaming, and threading.Roles:- Managed a team of 6 engineers (3 frontend and 3 backend) and a remote team of 6 engineers based in Amsterdam.- Acted as a technical lead, scrum master, code reviewer, and mentor for the team.- Led various product areas, including application frameworks, developer tools, portal management, permission management, content editing, widget framework, W3C Widgets support, AJAX navigation, performance profiling, and application customization.- Assisted the sales and professional services divisions with technical presentations, POCs, and product demonstrations.Other technologies used: Java, Javascript, SQL, Spring framework, Spring Security, HTML5, Google Closure HTML templates, CSS, jQuery, AngularJS, CKEditor, JSON, W3C Widgets, XML, StaX, qUnit, JEE, JSP, JSTL, ehcache, LDAP, SSO, CMIS, ATOM, SVN, Linux, Maven, Jetty/H2, Tomcat/Mysql, Webpshere/DB2, Jira.

Armonk, New York, Ny, Us

As a team leader, I helped deliver more than eight new features across three major releases of the IBM Connections product. I led a small team of three remote engineers and was responsible for technical design, code reviews, and mentoring new hires and interns. I also played a critical role in several product areas, including the Widget framework, communities applications integration, instant message integration, social analytics, people/content recommendation engine, application branding/customization, and LinkedIn integration.Technologies used: Java, JavaScript, SQL, UML, Websphere, IBM DB2, LDAP, SSO, HTML, CSS, XML, XPath, XSLT, ATOM, JSON, AJAX, REST, Dojo, Struts, J2EE, Servlets, JSP, JDBC, EJB, JMS, iWidgets, OpenSocial, Spring, ANT, jUnit

Armonk, New York, Ny, Us

Worked in the following software development teams: IBM Forms, Workplace Services, WebSphere Portal Server, Lotus Sametime. Technologies used: Java, WebSphere Application Server, and IBM DB2.

Armonk, New York, Ny, Us

Armonk, New York, Ny, Us

Java application development for the WebAhead Advanced Internet Technology Group (WebAhead).

Armonk, New York, Ny, Us

New York, New York, Us

Worked in the IT Department using Java, Visual Basic, and Microsoft SQL Server development.

Norwalk, Connecticut, Us

Worked in the Product Information Management Department using Java.

Key Accomplishments:- Built and sold over 100 custom computers.- Built 12 custom networks for file and printer sharing for small businesses.Certifications:A+ CompTIA Certified Computer Service Technician

Master Of Science, Computer Science (Computing Systems & Machine Learning)

Bachelor Of Science, Computer Science