JKLM

Work Experience

Etrading Software Philippines, Inc.

Makati, Philippines

Senior Software Developer

2023 - present

Technologies:
AWS (S3, Lambda, Glue, etc.), JavaScript (NodeJS, TypeScript), Java (Spring Boot), PostgreSQL, Auth0

Responsibilities:
One of the key developers of the company's Consolidated Tape Provider (CTP) project, designed to serve as bidding material for the UK/EU CTP initiative.

Maya Philippines, Inc.

Mandaluyong, Philippines

Senior Lead
Software Engineer

2017 - 2023

Technologies:
AWS, JavaScript (NodeJS, SailsJS), Java (Spring Boot), JPA (Hibernate), MySQL, PostgreSQL, Neptune, Microservices, Serverless, RESTful

Responsibilities:
Leading a team of software developers and quality engineers maintaining Maya's backend authentication systems highly utilized by the company’s main products: Maya, and Maya Business.

Started out as a software engineer and got promoted to senior software engineer (Jan 2019), software engineering specialist (Sep 2020), lead software engineer (Jan 2021), and senior lead software engineer (Jul 2022).

DEVCON Community of Technology Experts (DCTx)

Makati, Philippines

Cloud Infrastructure
Engineer

2020

Technologies:
AWS, Serverless

Responsibilities:
Responsible for maintaining ReliefAgad’s infrastructure: deploying and monitoring in production, provisioning AWS resources needed by the development team, and extracting database records to generate reports.

Designed a web application, SAP Search, that allows SAP (social amelioration program) beneficiaries to inquire about the disbursement status of their cash assistance.

Asia Pacific College (APC)

Makati, Philippines

Part-time Instructor

2017 - 2018

Technologies:
Android, Java, Gradle, Firebase

Responsibilities:
Taught mobile application development using Android to 2nd year college students. Developed a comprehensive course outline in lieu of the college's standards. Prepared course materials, hands-on exercises, and project-based thesis.

Orient Overseas Container Line (OOCL) Philippines, Inc.

Pasay, Philippines

Software Engineer

2014 - 2017

Technologies:
Java (Spring MVC), JPA (EclipseLink), JavaScript (ExtJS), Oracle PL/SQL, RESTful, SOAP

Responsibilities:
Worked as a full-stack developer responsible for maintaining UI & backend web services, development of core modules, and 24/7 on-call support.

Conducted onboarding and training sessions for new hires.

Banco De Oro (BDO) Unibank, Inc.

Makati, Philippines

Programmer

2013

Technologies:
Java, Web Services

Responsibilities:
Responsible for maintaining the reference number validation module of the web service used by the bank’s bills payment service.

Professional Skills

Top Skills

JavaScript & Java

Expert, 10 years

90%

Amazon Web Services

Senior, 7 years

80%

DevOps

Senior, 5 years

Other Skills

NodeJS Java Python Spring Boot Hibernate Open Policy Agent RESTful OAuth 2.0 OpenID Connect
SQL MySQL PostgreSQL Oracle PL/SQL MongoDB
AWS Lambda AWS API Gateway AWS Glue AWS S3 AWS RDS AWS ECS AWS DynamoDB Docker Microservices Serverless
CICD GitHub Actions GitLab CI
Scrum Agile Development Methodology JIRA

Education & Certification

Certified Solutions Architect - Professional

AWS

2024 - 2027

Extensive knowledge of the entire AWS platform
Proficient in delivering best practice recommendations for the architectural design of cloud systems and applications
Skilled in designing hybrid architecture solutions, implementing continuous integration and deployment processes, and building data platforms using key AWS technologies

Certified Solutions Architect - Associate

AWS

2020 - 2023

Comprehensive understanding of AWS services and technologies
Demonstrated the ability to build secure and robust solutions using architectural design principles based on customer requirements
Able to strategically design well-architected distributed systems that are scalable, resilient, efficient, and fault-tolerant

Certified Cloud Practitioner

AWS

2019 - 2023

Fundamental understanding of IT services and their uses in the AWS Cloud
Demonstrated cloud fluency and foundational AWS knowledge
Able to identify essential AWS services necessary to set up AWS-focused projects

Bachelor of Science in Computer Science and Information Technology

Asia Pacific College

2010 - 2014

Graduated with academic distinction (3.33 out of 4.0 GPA)
Developed an ordering system consisting of a website and a mobile application for a project-based thesis that was awarded as the Best Project of the Year.
Competed and won several programming contests held by internal organizations.

Portfolio

SAP Search is a web application that allows SAP (social amelioration program) beneficiaries to inquire about the disbursement status of their cash assistance.

Designed a full serverless solution with three layers: database (S3 + Athena + Glue), application (API Gateway + Lambda), web (S3 + CloudFront). Based on the search criteria submitted by the users from the web tier, the application tier will query the database (CSV files) using standard SQL and AWS Athena.

Department of Social Welfare and Development

Architect | Cloud Infrastructure Engineer

ReliefAgad is a progressive web application that aims to assist the Department of Social Welfare and Development (DSWD) in ensuring that the social amelioration program (SAP) cash assistance is delivered to families that were heavily affected by the pandemic.

Deployed and monitored RA in production, provisioned AWS resources needed by the development team, and extracted database records for report generation.

DEVCON Community of Technology Experts (DCTx)

Cloud Infrastructure Engineer

PSE Stock Price Alert is a Facebook Messenger chat bot made using Chatfuel and AWS Lambda. Users can communicate with the bot to inquire about a Philippine Stock Exchange (PSE) stock's current price or set up an alert for a specific PSE stock.

The bot automatically notifies the user once the stock price is reached. An AWS Lambda function that runs every minute triggers the alerts via webhooks using Messenger API

Personal Project

Developer

Get in touch

I'm currently taking on freelance work.

I can help you with the following:

Cloud solutions using AWS
Web development with NodeJS and Spring Boot
Databases

Drop me a line at jkmariano14@gmail.com