Portrait of John Leinard Javier
Software Engineer · Philippines

John Leinard Javier

Full-Stack JavaScript Developer

5+ years of experience designing and building reliable backend systems, REST APIs, and automation tools for enterprise teams.

View Projects Get in Touch [email protected] →
About

Building reliable software for enterprise teams.

Product Owner / Dev Lead at Accenture, where I lead end-to-end delivery of JavaScript-based enterprise applications — from Node.js and REST APIs to the SQL and Python that support them. Comfortable working across cloud environments and CI/CD pipelines, with a consistent focus on building software that is stable, maintainable, and easy for teams to rely on.

Skills

Tools I reach for.

Core

JavaScript Node.js Express REST APIs HTML5 / CSS3

Backend & Data

SQL MySQL / PostgreSQL Python JSON / XML Cloud (AWS, Alibaba Cloud)

Practices

Agile / Scrum CI/CD Test Automation Process Automation Git
Projects

A few things I've built.

01 FlowForge workflow automation dashboard UI

FlowForge

Automates multi-step approval workflows.

Node.jsExpressPostgreSQLREST API
View Project →
02 BulkLoad CSV import validation UI

BulkLoad

Validated bulk CSV / Excel imports.

Node.jsSQLCSV ParsingData Validation
View Project →
03 TicketFlow incident tracker UI

TicketFlow

Incident tracking with SLA timers.

JavaScriptExpressMySQLREST API
View Project →
04 PayCheck Auditor payroll discrepancy UI

PayCheck Auditor

Catches payroll calculation errors.

PythonPandasJavaScriptAutomation Scripts
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05 ShipBoard deployment status dashboard UI

ShipBoard

Live deployment status, every environment.

Node.jsREST APIsWebSocketsJSON
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06 SprintBoard kanban sprint planning UI

SprintBoard

Drag-and-drop Agile sprint planning.

JavaScriptLocalStorageNode.jsHTML5/CSS3
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07 LinkBridge API integration UI

LinkBridge

Syncs data between REST and XML APIs.

Node.jsREST/XML APIsJSONEnterprise Integration
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08 CloudPulse cloud monitoring dashboard UI

CloudPulse

Cloud resource health monitoring.

Node.jsAWS SDKAlibaba Cloud APICron Jobs
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09 TestRunner automated test results UI

TestRunner

Automated regression tests, every build.

JavaScriptNode.jsTest AutomationCI/CD
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10 OffboardIQ offboarding checklist UI

OffboardIQ

Guided employee offboarding workflow.

Node.jsExpressMySQLProcess Automation
View Project →
Experience

Where I've worked.

Sept 2025 — Present

Product Owner / Dev Lead

Accenture, Inc.
Apr 2023 — Aug 2025

Developer / Operations Engineer

Accenture, Inc.
Aug 2021 — Mar 2023

Associate Software Engineer

Accenture, Inc.
Sep 2020 — Jan 2021

Software Developer Intern

Questronix Corporation
Contact

Let's build something reliable.

Open to full-stack development roles. Email is fastest.

Email Me WhatsApp / Viber