Duvan Jamid Vargas

Technical Lead at MercadoLibre. MSc in Software Engineering. Observability, Java, JS/Node, Kafka & infrastructure. Building Ligero (Java) and AngeLite (JS).

Bucaramanga, Colombia Joined on Aug 27, 2022 duvanjamid.work@gmail.com https://github.com/ligero-framework/ligero

Education

MSc in Software Engineering

Work

Technical Lead at MercadoLibre

Duvan Jamid Vargas

Oct 26

Two Phones, One Dongle, One Car: Building a Phone Switcher for Android Auto (and Knowing When to Stop Reverse Engineering)

#android #kotlin #opensource #reverseengineering

13 min read

Duvan Jamid Vargas

Oct 26

Self-Hosting Infisical on Coolify: A Production-Style Guide with Compose, TLS, Machine Identities and GitHub OIDC

#selfhosted #devops #security #docker

11 min read

Duvan Jamid Vargas

Oct 26

SSR and Hydration in a Small Framework: What Works, What Doesn't, and What's Next (Inside AngeLite, Part 7)

#javascript #webdev #ssr #opensource

4 min read

Duvan Jamid Vargas

Oct 26

Benchmarking Honestly: Where My Framework Wins and Where It Loses (Inside AngeLite, Part 6)

#javascript #performance #webdev #opensource

4 min read

Duvan Jamid Vargas

Oct 26

Optional by Design: What Every Core Feature Costs in Bytes (Inside AngeLite, Part 5)

#javascript #architecture #performance #opensource

4 min read

Duvan Jamid Vargas

Oct 26

How a CI Performance Budget Keeps a 6 KB Framework From Growing (Inside AngeLite, Part 4)

#javascript #performance #testing #webdev

4 min read

Duvan Jamid Vargas

Oct 26

My Framework Ranked Last in the Security Tests. Here Are the 6 Holes I Fixed (Inside AngeLite, Part 3)

#javascript #security #webdev #opensource

4 min read

Duvan Jamid Vargas

Oct 26

No Zone.js, No Virtual DOM: How Signals and a Microtask Update Only What Changed (Inside AngeLite, Part 2)

#javascript #webdev #performance #frontend

4 min read

Duvan Jamid Vargas

Oct 26

A 6 KB Framework With Angular Syntax? Meet AngeLite (Inside AngeLite, Part 1)

#javascript #webdev #opensource #angular

3 min read

Duvan Jamid Vargas

Oct 26

Production-Hardening a Java Framework: Resilience, JWT/JWKS, Native Image and an MCP Server (Building Ligero, Part 7)

#java #security #graalvm #opensource

5 min read

Duvan Jamid Vargas

Oct 26

Observability in a Lightweight Java Framework: Health, Metrics, Traces and OpenTelemetry (Building Ligero, Part 6)

#java #observability #opentelemetry #devops

3 min read

Duvan Jamid Vargas

Oct 26

I Built a Dashboard That Lights Up Your Java Beans in Real Time (Building Ligero, Part 5)

#java #devtools #architecture #opensource

4 min read

Duvan Jamid Vargas

Oct 26

My Java Server Was 13x Slower Than It Should Be. The Culprit Was a 40 ms TCP Default (Building Ligero, Part 4)

#java #performance #networking #webdev

4 min read

Duvan Jamid Vargas

Oct 26

Dependency Injection Without Reflection: Wiring 100 Beans in 65 ms (Building Ligero, Part 3)

#java #architecture #opensource #performance

4 min read

Duvan Jamid Vargas

Oct 26

A Router, a Middleware Chain and a Secure Baseline in Plain Java (Building Ligero, Part 2)

#java #webdev #security #opensource

3 min read

Duvan Jamid Vargas

Oct 26

Spring Boot Takes 2 Seconds to Start. I Built a Java Framework That Starts in 0.4 (Building Ligero, Part 1)

#java #opensource #webdev #architecture

4 min read

Duvan Jamid Vargas

Oct 26

Stop Storing Secrets in GitHub Actions (and the One Wildcard That Opens Your Vault to Every Repo on GitHub)

#githubactions #devops #security #oidc

8 min read

DEV Community

Duvan Jamid Vargas

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Currently hacking on

Two Phones, One Dongle, One Car: Building a Phone Switcher for Android Auto (and Knowing When to Stop Reverse Engineering)

Self-Hosting Infisical on Coolify: A Production-Style Guide with Compose, TLS, Machine Identities and GitHub OIDC

SSR and Hydration in a Small Framework: What Works, What Doesn't, and What's Next (Inside AngeLite, Part 7)

Benchmarking Honestly: Where My Framework Wins and Where It Loses (Inside AngeLite, Part 6)

Optional by Design: What Every Core Feature Costs in Bytes (Inside AngeLite, Part 5)

How a CI Performance Budget Keeps a 6 KB Framework From Growing (Inside AngeLite, Part 4)

My Framework Ranked Last in the Security Tests. Here Are the 6 Holes I Fixed (Inside AngeLite, Part 3)

No Zone.js, No Virtual DOM: How Signals and a Microtask Update Only What Changed (Inside AngeLite, Part 2)

A 6 KB Framework With Angular Syntax? Meet AngeLite (Inside AngeLite, Part 1)

Production-Hardening a Java Framework: Resilience, JWT/JWKS, Native Image and an MCP Server (Building Ligero, Part 7)

Observability in a Lightweight Java Framework: Health, Metrics, Traces and OpenTelemetry (Building Ligero, Part 6)

I Built a Dashboard That Lights Up Your Java Beans in Real Time (Building Ligero, Part 5)

My Java Server Was 13x Slower Than It Should Be. The Culprit Was a 40 ms TCP Default (Building Ligero, Part 4)

Dependency Injection Without Reflection: Wiring 100 Beans in 65 ms (Building Ligero, Part 3)

A Router, a Middleware Chain and a Secure Baseline in Plain Java (Building Ligero, Part 2)

Spring Boot Takes 2 Seconds to Start. I Built a Java Framework That Starts in 0.4 (Building Ligero, Part 1)

Stop Storing Secrets in GitHub Actions (and the One Wildcard That Opens Your Vault to Every Repo on GitHub)