Tech Lead · Product Architecture

Javier
Costa.

Software engineer working across product, architecture and complex backend systems.

Valencia, Spain

CASE / 01

Healthcare automation platform

A healthcare operations team relied on spreadsheets and email for a business-critical workflow. The key was turning that informal process into a product with clear data, architectural and operational boundaries that could evolve safely.

CASE / 02

Browser extension evolution

A consent-management browser extension had to evolve under CSP, storage and cross-browser constraints. The key was separating product architecture from platform limitations so the system could keep changing without stalling delivery.

CASE / 03

Web crawling reliability

Customer issues in a high-usage crawling product often came from inconsistent execution and limited observability rather than isolated bugs. The focus became making failures visible and execution predictable enough for the product to evolve safely.

Blue Trail Software

Mar 2021 — Present

Tech Lead — Product Reliability & Architecture

Aug 2025 — Present

Tech Lead — Product Engineering & Browser Extension

Nov 2024 — Aug 2025

Tech Lead & Solutions Architect

Apr 2023 — Oct 2024

Senior Full Stack Engineer

Mar 2021 — Apr 2023

ITI — Instituto Tecnológico de Informática

Feb 2018 — Mar 2021

Full Stack Engineer — R&D

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