Open to opportunities

David London

@davidlondon

Message

Backend developer building secure, high-performance Node.js and Python REST APIs and database schemas.

Colombia

Message

What I'm looking for

I’m looking for a team where I can own backend services end to end—secure authentication, reliable database schemas, and production debugging. I want to ship APIs that matter, collaborate on contracts, and improve performance with practical CI/CD.

I’m a backend developer focused on building and operating secure REST APIs, relational schemas, and authentication layers that production applications rely on. I care about security and performance from the start—supported by OWASP Top 10 patterns—and I enjoy designing work that ships and gets maintained.

On a live commercial platform as the sole engineer, I designed the API layer and PostgreSQL schema, integrated a payment provider using webhook-driven order state transitions, and owned availability through monitoring, debugging, and post-release fixes. I implemented authentication and access control (JWT with EdDSA/RS256, Argon2id hashing, and role-based separation) with least-privilege database roles and parameterized queries.

I also build front ends, which helps me integrate API contracts smoothly end to end. In a contract role, I engineered CI/CD on Azure to replace manual deploys and cut deployment time dramatically with automated test gates, then helped migrate legacy modules to React while improving performance and maintainability.

Experience

Work history, roles, and key accomplishments

Current

Sole Engineer, Node.js + PostgreSQL

Current

Materiales La Bodega

Designed and built the backend of a live e-commerce and in-store retail platform, including a Node.js REST API and PostgreSQL schema with Prisma ORM. Integrated Mercado Pago webhooks, implemented JWT/Argon2id authentication with role-based access control, and owned production monitoring, debugging, and post-release fixes.

Node REST APIs PostgreSQL Prisma Database Schema Design Webhooks Mercado Pago Authentication JWT Argon2id Role Based Access Control OWASP Top 10 Parameterized Queries Least Privilege Database Roles Monitoring Debugging

Frontend Developer

Tambora Remote

Jan 2025 - Present (1 year 6 months)

Built CI/CD automation on Azure to replace manual deployments with test-gated pipelines, reducing deployment time from over 2 hours to under 15 minutes. Integrated REST APIs and migrated legacy jQuery modules to React, improving bundle size and consolidating logic into a reusable component library.

Azure Pipelines REST APIs React JQuery Migration Component Libraries Code Review

Education

Degrees, certifications, and relevant coursework

Universidad Tecnológica de Pereira

Systems & Computing Engineering, Systems & Computing Engineering

Studying Systems & Computing Engineering with coursework in Operating Systems, Computer Architecture, Networking, and Data Structures & Algorithms (expected to complete in 2029).