Full Stack Developer

Smart Working

Senior Backend-Heavy Full-Stack Engineer at Smart Working developing SmartEarn platform backend APIs. Focus on Node.js and TypeScript integration with an emphasis on scalability and reliability.

Posted 7/21/2026full-timeRemote • 🇵🇰 PakistanMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in developing and maintaining backend APIs and business logic using Node.js and TypeScript, with a strong focus on scalability, reconciliation, and idempotency for financial data. Proven ability to architect end-to-end product solutions and manage real-time transaction tracking and user notifications.

Highest-signal resume keywords

Node.js DevelopmentTypeScript ProgrammingAPI Integration Using RESTSQL Database ManagementMicroservices Architecture

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Applicant Tracking System Keywords

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Hard Skills

Backend API DevelopmentBusiness Logic ImplementationAutomated Testing Using JestEvent-Driven ProcessingFinancial Data ReconciliationReal-Time Transaction TrackingMicroservices DesignCI/CD Using DockerCloud Delivery Using GCPNext.js Development

Soft Skills

Attention to DetailIndependent WorkProblem SolvingAdaptability in Startup Environment

Tools & Technologies

React NativeMySQLPostgreSQLFirebaseRedisGitHub ActionsGCP Cloud Build

Industry Keywords

API IntegrationTransactional SystemsFinancial Data ManagementScalabilityIdempotency

Tech Stack

Tools & technologies

AWSCloudDockerFirebaseGoogle Cloud PlatformJavaScriptJestJUnitMicroservicesMySQLNext.jsNode.jsPostgresReactReact NativeRedisSQLTypeScript

About the role

Key responsibilities & impact

Develop backend endpoints for the SmartEarn API integration as the primary day-to-day focus.
Test and stage the integration against the VDX sandbox environment.
Implement and monitor purchase and reward status lifecycles, including Pending, Approved, Refunded and Cancelled states.
Calculate reward values using commission-split data.
Implement real-time transaction tracking, reward status management and user notification flows.
Develop and maintain backend APIs and business logic using Node.js and TypeScript.
Periodically support the user-facing rewards interface using React Native.
Contribute to occasional full-stack development work on the Next.js Business Portal.
Design scalable solutions that support reconciliation and idempotent processing of financial and transactional data.
Work autonomously, fill gaps and deliver effectively where formal processes or documentation are limited.
Architect end-to-end product solutions rather than only executing predefined tickets.
Support frequent deployments, typically every one to two days, while maintaining the thoroughness required for financial and transactional logic.

Requirements

What you’ll need

6 years of professional experience developing backend APIs and business logic using TypeScript, Node.js and Express.
4+ years of experience delivering API integrations using REST APIs, Webhooks and asynchronous or event-driven processing.
5+ years of experience applying an architecture mindset to scalability, reconciliation and idempotency for financial or transactional data.
2+ years of experience supporting mobile or frontend functionality using React Native.
3+ years of experience working with SQL databases, including MySQL or PostgreSQL.
3+ years of experience designing or developing microservices.
1–2 years of experience using Next.js for full-stack development; equivalent React experience may be considered.
2+ years of experience with automated testing using Jest, JUnit or another JavaScript or TypeScript testing framework.
3+ years of experience with CI/CD and cloud delivery using Docker, GitHub Actions and GCP Cloud Build, or equivalent AWS tooling.
2+ years of experience using Firebase or in-memory databases such as Redis.
Senior-level engineering experience, with at least 6 years of overall professional experience.
Ability to work independently and fill gaps within a startup environment.
Strong attention to detail when handling financial and transactional data.
Ability to work effectively with limited formal processes and documentation.
Ability to architect solutions and take end-to-end product ownership.
Ability to balance frequent delivery with the precision and thoroughness required for transactional systems.

Benefits

Comp & perks

Fixed Shifts: 12:00 PM - 9:30 PM IST (Summer) | 1:00 PM - 10:30 PM IST (Winter)
No Weekend Work: Real work-life balance, not just words
Day 1 Benefits: Laptop and full medical insurance provided
Support That Matters:Mentorship, community, and forums where ideas are shared
True Belonging: A long-term career where your contributions are valued