Johnny Rajan
Saint Paul
Summary
Self-motivated software engineer and MSCS candidate at Georgia Tech specializing in Machine Learning. Proficient in PyTorch, scikit-learn, and NumPy, with full-stack development experience in Python, Java, JavaScript, and HTML/CSS. Recognized for delivering clean, maintainable code and data-driven solutions in collaborative environments.
Overview
7
7
years of professional experience
3
3
Certifications
Work History
Software Engineer
Ecolab
Saint Paul
01.2023 - Current
- Develop, debug, and test Apex, Lightning Web Components (LWC), JavaScript, HTML, and CSS to enhance Ecolab Connect, a customer portal serving over 250,000 users and enabling more than $1.8 billion in revenue.
- Implement new features, refine the user experience, and resolve bugs to support ongoing enhancements and business growth.
- Collaborate with cross-functional teams to gather requirements and deliver scalable, user-focused solutions.
- Maintain 90%+ Apex code coverage through comprehensive unit testing, and adherence to Salesforce best practices.
- Execute configuration and code changes across Salesforce modules to support personalization, automation, and service improvements.
- Participate in Agile ceremonies, including sprint planning, PI planning, and retrospectives, to drive iterative delivery.
- Use Git for version control, and author technical documentation to support team knowledge sharing and maintainability.
Software Engineer Intern
Ecolab
Saint Paul
05.2022 - 08.2022
- Engineered personalized product recommendation system using Einstein Next Best Action, leveraging customer order history for intelligent suggestions.
- Evaluated recommendation strategies with Salesforce Recommendation Builder and AI-driven tools to enhance user engagement.
- Utilized Salesforce Flow Builder to dynamically filter and customize recommendations based on business logic and user context.
- Applied full-stack development skills across Apex, JavaScript, HTML, and CSS for seamless integration of AI features.
- Contributed to Agile team by participating in sprint ceremonies and tracking progress in Azure DevOps.
Software Engineer Intern
Caterpillar
Chicago
05.2021 - 08.2021
- Developed API endpoints using Scala and Akka HTTP to support alerts and notifications for Caterpillar IoT applications.
- Created and maintained Postman collections for testing and validating backend HTTP requests.
- Refactored and modularized codebase, enhancing maintainability and scalability.
- Participated in cross-functional intern hackathon, building machine learning model to predict demand for Caterpillar machine parts.
- Contributed to Agile environment through sprint planning, daily stand-ups, and retrospectives.
Coding Instructor
Codehero Academy
Lakeville
10.2018 - 08.2019
- Self-taught in Arduino, MIT App Inventor, Microbit, and JavaScript, establishing a solid understanding of hardware-software integration.
- Designed instructional videos to support student learning of technical topics independently.
- Coached First Lego League Robotics team on programming methods, design processes, and effective collaboration.
Education
Masters Of Science - Computer Science
Georgia Institute of Technology
Atlanta, GA05-2026
Bachelor Of Science (BS) - Computer Science
University of Minnesota
Minneapolis, MN05-2023
Skills
Technical Skills
- Programming Languages: Python, Java, JavaScript, HTML/CSS
- AI/ML Libraries: PyTorch, NumPy, Scikit-learn
- Web & API Development: RESTful APIs, Akka HTTP
- Tools & DevOps: GitHub, Postman, Azure DevOps
- Salesforce Platform: Apex, Lightning Web Components (LWC), Flow Builder, Einstein NBA, Recommendation Builder
- Development Methodologies: Agile (Scrum, PI Planning, Retrospectives)
Core Competencies
- Machine Learning & Personalization
- API Design & Integration
- Agile Team Collaboration
- Cross-Functional Communication
- Technical Documentation & Knowledge Sharing
Certification
Salesforce Platform Developer 1, Salesforce, (In Progress)
Timeline
Software Engineer
Ecolab
01.2023 - Current
Software Engineer Intern
Ecolab
05.2022 - 08.2022
Software Engineer Intern
Caterpillar
05.2021 - 08.2021
Coding Instructor
Codehero Academy
10.2018 - 08.2019
Masters Of Science - Computer Science
Georgia Institute of Technology
Bachelor Of Science (BS) - Computer Science
University of Minnesota