Oscar Calderon

Rising Codementor

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ABOUT ME

Applications Inhouse Engineer in TELUS

Seasoned software developer with strong emphasis on backend stuff (development & infrastructure), but with some knowledge of frontend.

I love to solve problems for people and make their lives easier by coding usable solutions that are both performant and easy to use. Good experience with a couple of languages & technologies, being my preferred ones Javascript (NodeJS), PostgreSQL, Docker, Kubernetes & MongoDB.

I am familiar with the usage of several OSes, mainly Linux and MacOS. I'm not a super guru but I'm familiar with the command line and basic stuff on it (file system navigation, services management, basic edition & script creation).

I don't consider myself shy as I've had to interact (and understand) with end users during a long part of my professional career, in order to negotiate and translate their needs into doable software solutions. I am a team player who likes to feel challenged by anyone in order to learn more.

Spanish, English

Central Time (US & Canada) (-05:00)

Joined July 2014

EXPERTISE

JavaScript

5 years experience

Since the beginning of my work experience, i've worked with web applications in JAVA. HTML and Javascript go together, so since that mome...

Since the beginning of my work experience, i've worked with web applications in JAVA. HTML and Javascript go together, so since that moment i've been in touch with JS and learned a lot of libraries like jQuery. Recently i'm going deeper in React.js

Java

8 years experience

Since 2008, i've worked as a JAVA developer and since then, all my jobs involve JAVA development. I've had experience with various framew...

Since 2008, i've worked as a JAVA developer and since then, all my jobs involve JAVA development. I've had experience with various frameworks like Spring, Struts 1&2, JSF 2, using containers like IBM Websphere, Jboss & Wildfly (my favorite), Weblogic, Glassfish and so on. I've worked on several enterprise projects like ERP, CRM, POS, Business Intelligence.

Android

2 years experience

I had the opportunity to work on some Android projects for the company that i worked before TELUS, about mobile apps that were some kind ...

I had the opportunity to work on some Android projects for the company that i worked before TELUS, about mobile apps that were some kind of extension for existing enterprise systems (ERP, CRM, POS). This attracted me a lot and currently i'm developing 2 personal projects that involve mobile applications, that will be productivity apps.

Node.js

5 years experience

REVIEWS FROM CLIENTS

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SOCIAL PRESENCE

GitHub

vue-practices

Just learning to use VueJS

JavaScript

ebook-safary-online

JavaScript

Stack Overflow

772 Reputation

EMPLOYMENTS

Senior Backend Engineer

Pager Inc.

2020-08-01-Present

I am part of the Consumer Squad, where we work to enhance and build new capabilities to the main Pager health services solution, which pr...

I am part of the Consumer Squad, where we work to enhance and build new capabilities to the main Pager health services solution, which provides patients with an E2E health service workflow. Working on a bleeding edge technology stack, with a microservices architecture using NodeJS, SQL & NoSQL databases according to scenarios (to reach max availability & performance), running on Docker & K8S.

Node.js

MongoDB

PostgreSQL

Node.js

MongoDB

PostgreSQL

Redis

RabbitMQ

Firebase

Docker

JavaScript

Kubernetes

Senior Full Stack Engineer

Intricate Solutions

2020-02-01-2020-08-01

Providing SCADA, Fuel Flare Vent, Metering Schematic Systems, IDMS / Integrated Data Management System, OE / Commissioning & Management S...

Providing SCADA, Fuel Flare Vent, Metering Schematic Systems, IDMS / Integrated Data Management System, OE / Commissioning & Management System solutions. Creation of secure SCADA services using NodeJS and KoaJS

Java

Node.js

Spring

Java

Node.js

Spring

PostgreSQL

Koa

SCADA

Full Stack Developer

Freelancer.com

2015-03-01-2020-08-01

Development of freelance projects, mainly dynamic web applications, SPAs, Android apps and backends for various clients overseas. Working...

Development of freelance projects, mainly dynamic web applications, SPAs, Android apps and backends for various clients overseas. Working with a lot of new and trending technologies like React.js, Node.js, Meteor & Cassandra, and also other technologies like JAVA.

Java

Node.js

MySQL

Java

Node.js

MySQL

Spring

PostgreSQL

React

JavaScript

Redux