Application Developer – SDE 4 (Node.js/React)

Herndon, Virginia, USPosted 7 days ago

Role Overview

AMroute LLC is hiring a mid-level Application Developer – SDE 4 (Node.js/React). This is a full-time hybrid role, based in Herndon. Part of AMroute LLC's Backend hiring, posted last week. Full responsibilities, required qualifications, and the apply link are listed in the description below.

Salary Context

Salary is not disclosed in this posting. Market median for Mid-level Backend roles is $115k-$163k (based on 10 comparable listings). Many employers share specifics during the interview process or after an initial screen.

Resume Keywords to Include

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JavaScriptTypeScriptReactNext.jsNode.jsAgileMicroservicesOR

Job description

Application Developer – SDE 4 (Node.js/React)

Client: Walmart

Location: Herndon, VA (Hybrid)

Work Schedule: Onsite for 3 weeks, Remote for 2 weeks (Recurring)

Duration: Long-Term Contract

USC/GC

About the Role

Walmart is seeking a highly skilled Application Developer (SDE 4) to join its engineering team and drive the modernization of the PRM (Payment Rules Management) platform. This role requires a senior-level engineer with strong expertise in Node.js, React, Next.js, and TypeScript, with a heavy emphasis on backend development using Node.js.

The selected candidate will work on implementing and enhancing business-critical functionalities across various retail domains, ensuring legacy-equivalent behavior, seamless cart experiences, and area-specific payment processing capabilities.

Required Skills

10+ years of software development experience.
Strong expertise in:
Node.js (Must Have)
TypeScript
React.js
Next.js
Jest
Unit Testing and Test Automation
Experience designing and developing scalable web applications and microservices.
Strong understanding of SDLC methodologies and Agile development practices.
Experience with:
Functional Testing
Integration Testing
Regression Testing
Defect Resolution and Production Support
Excellent communication and stakeholder management skills.

Key Responsibilities

Design, develop, and enhance PRM functionalities and payment workflows.
Perform discovery, legacy system analysis, and business flow mapping.
Create and update technical design documentation.
Build scalable applications and APIs using Node.js and TypeScript.
Implement and validate cart and payment processing functionalities.
Conduct unit, functional, integration, and regression testing.
Resolve defects and ensure application stability and performance.
Validate metrics and ensure successful stakeholder sign-offs.
Collaborate with cross-functional teams to deliver high-quality solutions.

Project Scope

The project involves implementing and validating support for multiple retail business areas, including:

Sporting Goods
Fuel
Puerto Rico Region
Service Desk
Electronics
Jewelry
Cosmetics
Pharmacy
Gift Cards (GC)
Other specialized retail areas

The primary objective is to ensure:

Legacy-equivalent behavior within PRM.
Resolution of cart and payment restrictions.
End-to-end validation of item additions, services, and payment acceptance rules.
Successful implementation of area-specific business rules and workflows.

Deliverables

Discovery and legacy mapping documentation
Technical design updates
Development and defect resolution
Functional, integration, and regression testing
Metrics validation and reporting
Documentation closeout
Stakeholder reviews and sign-offs

Ideal Candidate

We are looking for a senior engineer who:

Has deep expertise in Node.js and modern JavaScript frameworks.
Can work independently and lead complex technical initiatives.
Has experience with large-scale eCommerce or retail applications.
Is comfortable working in a fast-paced, collaborative environment.

Primary Skills: Node.js, TypeScript, React, Next.js, Jest, Unit Testing

Industry Preference: Retail / eCommerce experience is highly preferred.

About AMroute LLC

AMroute LLC

BackendHybrid

All open roles at AMroute LLC

Frequently Asked Questions

How do I apply for the Application Developer – SDE 4 (Node.js/React) position at AMroute LLC?

Use the Apply button above to submit your application directly to AMroute LLC. Most applications take less than 5 minutes if your resume and contact details are ready, and you'll be routed to the employer's official application system to finish.

Is the Application Developer – SDE 4 (Node.js/React) role at AMroute LLC remote or in-office?

This is a hybrid role based in Herndon. Expect a mix of in-office and remote days, with the specific cadence set by the hiring manager.

What does a Application Developer – SDE 4 (Node.js/React) at AMroute LLC earn?

AMroute LLC has not disclosed a salary range in this posting. Many employers share specifics later in the interview process; you can also ask during a recruiter screen if compensation transparency is important to you.

When was the Application Developer – SDE 4 (Node.js/React) role at AMroute LLC posted?

This role was posted on July 2, 2026 (7 days ago). It's still listed as actively hiring; we re-confirm openings against the source system multiple times per day and remove closed roles.

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