Yeferson G.
Software Engineer
Experience
Jan 2024 - Mar 2025
1 year 3 monthsNew York, United States
Software Engineer
LibreChat
- Developed data-driven applications using React and Node.js.
- Built and maintained RESTful APIs, GraphQL using Express.js, enabling reliable data communication.
- Built the backend architecture and developed microservices using Python Flask, Golang integrated with Angular-based UIs.
- Developed and integrated AI-driven features using large language models (LLMs), prompt engineering, and API-based services like OpenAI, LangChain to enhance product intelligence and user experience.
- Worked with SQL databases and API integrations in a DevOps-driven workflow.
- Collaborated with UI/UX designers and DevOps to ensure responsive, maintainable applications.
Aug 2021 - Nov 2023
2 years 4 monthsUnited States
Lead Backend Developer
Waterfront Philippines, Inc.
- Led the architecture and development of scalable, high-performance backend systems using Rust, Node.js, Express, FastAPI, and PostgreSQL, ensuring reliability and low-latency responses under high traffic.
- Spearheaded the transition to a modern microservices architecture, reducing deployment times by 60% and improving system maintainability.
- Implemented secure authentication and authorization systems using OAuth2, JWT, and Firebase Auth, enhancing platform security and user management.
- Collaborated closely with DevOps, frontend, and product teams to design RESTful and GraphQL APIs that powered seamless cross-platform experiences.
- Built and maintained CI/CD pipelines with Docker, GitHub Actions, and Cloud Run, enabling automated testing and zero-downtime deployments.
Dec 2019 - Jun 2021
1 year 7 monthsGallarate, Italy
Lead Full Stack Developer | R&D Engineer
Blhack Srl
- AWS Lambda, Dialogflow (Google Cloud), Al Technology and Programming.
- Embedded System Programming (Collaborator, Advisor) Sector: Electronics Technology, Renewable Energy.
- Integrated Dialogflow bots with platforms like Google Cloud Functions, Firebase, and AWS API Gateway for seamless multichannel experiences (web, mobile, voice).
- Built AI-enhanced features using Python, Go, Node.js, and pre-trained ML models/APIs (such as Google Cloud NLP, Vision API, and OpenAI tools).
Dec 2018 - Nov 2019
1 yearGothenburg, Sweden
Full Stack & Mobile App Developer | Lead Technical Specialist
Dignisia
- React, Node.js, PHP (Laravel, Core PHP), MySQL, MVC Architecture
- Mobile App development use Swift, Kotlin and Java and IT support
- SAPUI5 and ABAP, React.js, Typescript, Spring & Hibernate
- Developed and maintained custom SAP Fiori applications using SAPUI5, integrating with backend ABAP logic and OData services.
- Implemented role-based authentication and security in full-stack applications using Spring Security and JWT.
Summary
Versatile Software Engineer with over 7 years of experience in full-stack development. Skilled in both front-end and back-end technologies, with a strong focus on performance, usability, and clean architecture. Passionate about delivering impactful digital solutions through agile development and continuous learning.
Languages
English
NativeSpanish
NativeEducation
Oct 2014 - Jun 2018
DigiPen Institute of Technology
Computer Science · Computer Science · Redmond, United States
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