Open to opportunities

Boris Nicolas León Vargas

@borisnicolasleon

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Backend developer with 4+ years building robust APIs and microservices.

Colombia

Message

What I'm looking for

I’m looking to apply my backend expertise in a game development or QA/testing role—building robust APIs or supporting quality with strong analytical troubleshooting, clear documentation, and DevOps-ready practices in a collaborative, fast-paced environment.

I’m a systems engineer and backend developer with 4+ years of experience designing and building robust APIs, microservices, and enterprise web systems. I’ve worked across Python (Django), Java (Spring Boot), PHP, and C#, translating complex requirements into reliable, well-documented solutions.

In my roles, I’ve focused on system architecture, REST API design, and DevOps-ready development—using tools like Docker, AWS, Git, and CI/CD practices. I’m especially proud of optimizing performance-critical workflows (including refactoring SQL and Java logic) to dramatically reduce execution time, and of delivering clear technical documentation that improves onboarding and incident resolution.

I’m also drawn to QA/testing and game development: I’ve supported bilingual, SLA-driven customer and testing workflows while applying structured bug triage and API testing. Today, I’m seeking to apply my backend strengths in a game development or QA/testing role, bringing strong analytical thinking and a passion for interactive systems.

Experience

Work history, roles, and key accomplishments

Travel Associate (Bilingual Support)

IGT Solutions

Jul 2025 - Mar 2026 (8 months)

Provided bilingual customer support in a high-volume travel platform environment, resolving complex application and policy issues under SLA pressure. Performed QA/testing activities (e.g., API testing and bug triage) and contributed to documentation and escalations while maintaining high CSAT.

QA Testing Bilingual Support Manual Testing Bug Triage Postman Pytest API Testing Selenium Documentation Docker AWS CI CD Linux Scrum

Backend Developer

Infometrika

Jul 2024 - Dec 2024 (5 months)

Led end-to-end development of a new enterprise web application from requirements to production deployment using Django, Vue.js, Django REST Framework, and PostgreSQL.

Nativo Application Analyst

Asopagos S.A.

Jul 2023 - Jun 2024 (11 months)

Architected and maintained REST integrations across PHP, Java, and Spring Boot systems handling thousands of daily financial transactions. Refactored SQL queries and Java logic to reduce batch execution time from hours to under 30 seconds and produced technical documentation for infrastructure and deployments.

PHP Java Spring Boot SQL Batch Processing Technical Documentation DevOps AWS EC2 S3 RDS CI CD

Backend Developer & Research Assistant

Infometrika SAS

Mar 2021 - Jul 2023 (2 years 4 months)

Evaluated emerging technologies and delivered viability assessments, proof-of-concepts, and migration roadmaps for Orfeo modernization. Built and owned backend architecture using Python/Django and PostgreSQL with Django REST Framework, including a multi-tenant document workflow engine backed by AWS S3, and contributed to Docker-based staging/production deployments.

Python Django Django REST Framework PostgreSQL REST APIs AWS S3 Docker Linux DevOps Vue.Js Proof of Concept Permission Systems

Education

Degrees, certifications, and relevant coursework

Universidad El Bosque

Ingeniería de Sistemas

2019 - 2023

Implemented containerized architecture with Docker and Linux server deployment, and contributed to agile SCRUM ceremonies and REST API design consumed by a Vue.js frontend.