Juan C. PérezSenior Fullstack Software Engineer
Experienced Senior Software Engineer and former tech co-founder with a strong track record in fintech and healthcare. Skilled in building user-centric web applications, micro-services, and event driven architectures. Adept at translating complex requirements into high-quality code and leveraging cutting-edge technologies to drive exceptional results and business growth.
Certifications
C#
C#
12/14/2022
.NET Developer
.NET, .NET Core, ASP.NET, C#.NET
12/16/2022
Tech stack
.NET Core (4)
C# (4)
ASP.NET (2)
.NET
C#.NET
JavaScript (7)
SQL (6)
React (6)
Amazon Web Services (AWS) (5)
HTML (5)
MongoDB (4)
Azure (4)
TypeScript (4)
ETL (4)
Amazon (4)
Python (4)
PostgreSQL (4)
Teaching (3)
CSS (3)
CircleCI (3)
Microservices Architecture (3)
Bootstrap (3)
jQuery (3)
PHP (3)
Docker (3)
Jenkins (3)
Jest (3)
Postman (3)
Express.js (3)
APIs (2)
Experience
Senior Software Engineer IISOLVE
12/2021 - Currently

• Developed ETL pipelines for fixed-income market data analysis, processing over 500 million rows daily using Python, Amazon Redshift, PostgreSQL, SQS, and Airflow. • Migrated a legacy risk management console and WPF app for hedge funds, developed 10+ API endpoints, managed business logic, reducing processing time by 20% and enhancing reliability for 100+ users. • Led the UI redesign with React for the legacy app, reducing load times from 3 seconds to under 1, and increasing user satisfaction by 25%, with 85% of users reporting a more smooth and better experience.

Python
PostgreSQL
React
SQL
ETL
TypeScript
Amazon
C#
.NET Core
Azure
Senior Software EngineerCareMetx, LLC
11/2019 - 12/2021

• Orchestrated API integrations with ExpressJS and Molecular, adding 15 new features and reducing bottlenecks by 20%, improving efficiency. • Built MERN stack tools and a reminder scheduling system using Node.js and TypeScript, reducing missed treatment doses by 200+ per month among patients. • Implemented test automation using Jest and Postman, reducing manual effort by 35% and ensuring timely feature delivery.

React
Jest
Postman
MongoDB
Express.js
Microservices Architecture
Amazon Web Services (AWS)
CircleCI
Jenkins
Docker
Lead Appian DeveloperBaker Tilly República Dominicana
02/2018 - 11/2019

• Led a team of 8 developers in Appian, overseeing project planning, resource allocation, code reviews, and technical design to achieve successful outcomes. • Played a key role in designing the architecture of Appian solutions for digital transformation projects, boosting clients' operational efficiency by 30%. • Conducted regular code reviews, established coding standards, and implemented best practices to maintain high-quality Appian solutions and optimize performance.

JavaScript
MySQL/MariaDB
Business Process Management (BPM)
Automation
Scrum
Amazon Web Services (AWS)
Application Architecture
Test-driven Development (TDD)
Technical Co-FounderSuper EZ, Inc.
08/2017 - 03/2018

• Led the technology infrastructure for an online grocery marketplace using AWS and microservices, supporting 600 daily users with high availability and scalability. • Played a key role in the development of the product using React and .NET Core, aligning features with the main business goals. • Pioneered a product launch strategy that facilitated rapid user feedback and accelerated iterative development cycles by 40%, enhancing the user experience for 600 users within the first three months.

React
GraphQL
React Native
Amazon Web Services (AWS)
Microservices Architecture
CircleCI
Redis
RabbitMQ
.NET Core
Software Engineer ISpectrum Center
09/2015 - 07/2017

• Provided expert support for radio network management projects in Uruguay, Brazil, and Argentina, maintaining 99.9% uptime and achieving 95% client satisfaction. • Led data migration, development, and documentation for radio frequency analysis software using PHP, JavaScript, and MongoDB, doubling system speed and reducing migration time from 10 to 6 hours through optimized ETL processes.

PHP
JavaScript
MongoDB
jQuery
HTML
CSS
APIs
Software DeveloperSeaside Software Development, LLC
03/2015 - 09/2015

• Develops software solutions by studying information needs; conferring with users; studying systems flow, data usage, and work processes; investigating problem areas; following the software development lifecycle. • Determines operational feasibility by evaluating analysis, problem definition, requirements, solution development, and proposed solutions. • Documents and demonstrates solutions by developing documentation, flowcharts, layouts, diagrams, charts, code comments and clear code. • Prepares and installs solutions by determining and designing system specifications, standards, and programming.

PHP
Ionic
Design Patterns
JavaScript
jQuery
MySQL
Web Application DeveloperBrand Integrity
04/2013 - 09/2014

• Played an integral role in the product development lifecycle, participating in ideation, design, and delivery phases to ensure the successful implementation of new functionalities. • Worked collaboratively within a development team to program fixes, patches, and implement new features for the company's software, fostering a culture of innovation and continuous improvement. • Assisted in testing and quality assurance efforts for the Employee Engagement Platform development.

ASP.NET MVC
REST APIs
JavaScript
HTML
CSS3
Bootstrap
SQL
UI Design
UX Design
Research Assistant: Software DeveloperRochester Institute of Technology
02/2012 - 03/2013

• Contributed to the research and development efforts for the web-based application aimed at ISTA members. • Implemented features using ASP.NET MVC 3 Razor and C# to enable ISTA members to identify suitable tests and provide initial information for packaging procedures. • Assisted in database development using SQL Server 2008, including designing schemas and writing optimized queries to support application functionality.

SQL
ASP.NET
HTML
JavaScript
Bootstrap
CSS
Support EngineerMulticómputos S.R.L.
07/2011 - 09/2011

• Trouble shoot and debug minor program bugs for entire company system • Effectively find, and developed oversight processes and support strategies that were helpful in increasing profitability in 10% and reducing the time required to resolve problems. • Obtained certification as Technical Specialist in Symantec Network Access Control.

Networking
Debugging
Infrastructure monitoring
IT Support
Security
IT Security
Application security
Security Testing
Spanish TutorModern Language Department, Farmingdale State College
02/2008 - 01/2011

• Assisted students with Spanish language exercises and test preparation. Job requires no supervision.

Teaching
Web Application DeveloperModern Language Department, Farmingdale State College
02/2010 - 06/2010

• Developed web application for the Computer Systems department using ASP.NET, and C# • Backend included development in the .NET Framework and Microsoft SQL Server 2008 • Set up/connected web application and database to download software from the Computer Systems department website

SQL
ASP.NET MVC
C#
Education
Master of Science in Information TechnologyRochester Institute of Technology
02/2011 - 02/2013
Bachelor of Science in Computer Programming and Information SystemsFarmingdale State College
02/2007 - 02/2011
Portfolio
Float - Rochester Startup Weekend 2014
April 2014 - April 2014
ISTA Packaging Test Selection Tool
January 2012 - February 2013
Hybrid Domotics Energy Efficiency (HDEE)
April 2011 - May 2012