Back-End Developer (Node.js/TypeScript) - Microservices

PNI Business Solutions, Inc.; Pasig; On-site; PHP 600,000 - 900,000; Full time

Job summary

PNI Business Solutions, Inc. seeks a Mid-Level Back-End Developer to design, implement, and optimize Node.js/TypeScript micro-services powering our lending, transaction, user management, and notification modules on AWS.

You will collaborate with mobile and admin-portal teams to deliver secure, scalable solutions, write automated tests, and ensure robust data modeling in MySQL on AWS RDS. This role requires 3–5 years of experience, strong coding standards, and proactive problem solving.

Qualifications

• 3–5 years of professional back-end development experience.
• Strong proficiency in Node.js (version 20 or later) and TypeScript.
• Production experience developing REST APIs using Express or a similar framework.
• Solid knowledge of relational databases, particularly MySQL or PostgreSQL, including schema design, indexing, transactions, and query optimization.

Responsibilities

• Develop, maintain, and enhance back-end services that connect lenders and borrowers, including lender profiles, loan configurations, and loan discovery features
• Manage the loan lifecycle, including applications, approvals, disbursements, repayment schedules, extensions, overdue accounts, and demand letters
• Build lender-facing features for cash bond balances, transaction histories, loan portfolios, outstanding balances, and payment tracking
• Implement accurate interest, service charge, and convenience charge calculations, supported by automated tests covering edge cases and rounding
• Develop reliable payment processing workflows and integrations with payment partners
• Design and optimize relational databases using MySQL 8 on AWS RDS, including schema design, SQL queries, and safe database migrations
• Design, develop, and maintain REST APIs using Node.js, TypeScript, and Express across lending, transaction, user, partner, notification, messaging, and admin services
• Implement event-driven communication between micro-services using Kafka, with versioned and documented message contracts
• Develop and maintain unit and integration tests using tools such as Mocha, Chai, and Supertest
• Package and deploy services using Docker and AWS CodeBuild/CodeDeploy to EC2 environments behind load balancers

Skills

Node.js

TypeScript

REST APIs

Express

Tools

MySQL

PostgreSQL

AWS

Docker

Kafka

RDS

Job description

PNI Business Solutions, Inc. seeks a Mid-Level Back-End Developer to design, implement, and optimize Node.js/TypeScript micro-services powering our lending, transaction, user management, and notification modules on AWS.

You will collaborate with mobile and admin-portal teams to deliver secure, scalable solutions, write automated tests, and ensure robust data modeling in MySQL on AWS RDS. This role requires 3–5 years of experience, strong coding standards, and proactive problem solving.