SOFTWARE ENGINEER

Hi, I'm Daniel.

Software Engineer focused on building scalable backend systems that create measurable business impact. I've worked at Mercado Libre and Yuno, designing high-performance payment and commerce solutions that reduced operational costs, improved conversion rates, and supported thousands of users across international markets.

Daniel Hernandez
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EXPERIENCE

Where I've Worked

YUNO

Backend EngineerNov 2025 — Present
  • Led development of the Smart Routing module, enabling dynamic transaction routing to optimize approval rates and reduce processing costs across multiple payment providers
  • Built a real-time event processing pipeline using Kafka and Go, handling high-throughput transaction events with sub-second latency
  • Designed and implemented RESTful and gRPC APIs for merchant onboarding and configuration management
  • Improved system reliability by implementing circuit breakers, retry policies, and distributed tracing across microservices
  • Collaborated with product and commercial teams to translate business requirements into scalable backend solutions
GoGinJavaSpring BootRedisgRPCDockerKubernetes

Mercado Libre

Software EngineerJan 2023 — Nov 2025
Software DeveloperJan 2022 — Jan 2023
  • Reduced operational costs by millions through automation and optimization of backend services in Go and Java
  • Enhanced observability by 75% by implementing comprehensive monitoring dashboards and alerting with Datadog
  • Secured data for 23K+ users by designing and implementing data protection mechanisms across services
  • Built event-driven microservices processing millions of daily transactions using Kafka and PostgreSQL
  • Contributed to a platform serving 200M+ users across Latin America, focusing on performance and reliability
GoJavaKafkaPostgreSQLDatadogDockerAWS

Universidad EAFIT

Teacher AssistantJun 2021 — Dec 2021
  • Supported courses in data structures and algorithms, guiding students through complex problem-solving exercises
  • Evaluated assignments and provided mentorship to undergraduate students

EDUCATION

Education & Achievements

Software Development Specialization

Universidad EAFIT

Jul 2025 — Dec 2025

Bachelor's degree, Computer Science

Universidad EAFIT

Jan 2020 — Dec 2024

Associate's degree, Computer Science

Politécnico Colombiano 'Jaime Isaza Cadavid'

2018 — 2019

Achievements

Honorable Mention — South America North Finals

ICPC (International Collegiate Programming Contest)

14th place out of 41 — South America North Finals

ICPC (International Collegiate Programming Contest)

CERTIFICATIONS

Certifications & Courses

Data Science (Basic Level)

Universidad EAFIT

View Certificate

Data Structures and Algorithms

Udemy

View Certificate

Technical Support Fundamentals

Coursera

View Certificate

Skills & Technologies

LANGUAGES

GoJavaTypeScriptPythonC++

BACKEND

gRPCRESTKafkaRedisPostgreSQLMySQLSpring BootGin

INFRASTRUCTURE

DockerKubernetesAWSGoogle CloudLinuxTerraform

PRACTICES

Distributed SystemsMicroservicesEvent-Driven ArchitectureCI/CDObservabilitySystem Design

CONTACT

Let's Work Together

I'm always interested in hearing about new opportunities, interesting projects, and ways to push the boundaries of distributed systems.