Principal Software Engineer in Reston, VA

ZipRecruiter; Great Falls Crossing (VA); On-site; USD 90,000 - 140,000; Full time

Job summary

An established industry player is seeking a Staff Engineer to join their dynamic team. This role focuses on creating reusable JavaScript libraries and upgrading legacy applications to modern frameworks. You will design and implement features for retail checkout applications, ensuring high performance and scalability. The ideal candidate will have extensive experience with TypeScript, JavaScript, and leading large-scale projects. Join a forward-thinking company that values innovation and operational excellence, and take your career to the next level in a collaborative environment.

Qualifications

• 5+ years experience with large-scale projects using TypeScript and JavaScript.
• Deep understanding of modern JavaScript frameworks and libraries.

Responsibilities

• Create reusable JavaScript libraries for web applications.
• Design and implement new features for retail checkout applications.

Skills

JavaScript

TypeScript

Redux

React

Node.js

SOLID principles

TDD

GIT

Jest

Splunk

Grafana

BigQuery

Tools

VS Code

Job description

Job Description

Role - Staff Engineer

Location - Fully Onsite in Reston, Virginia, 5 days a week

Duration - 12 month contract

Must have:

• Senior Level - Staff/Managing teams/LEAD/Principal JavaScript, TypeScript, Redux, React, Node.js

Job Description:

What you'll do:

• Create reusable JavaScript libraries for web applications.
• Upgrade legacy JavaScript and Node.js applications to the latest libraries and dependencies.
• Design and implement new features for device orchestration and API integration at scale for retail checkout applications.
• Decompose vague requirements into well-structured functional and non-functional specifications.
• Drive requirement clarification, coding, and testing independently.
• Communicate effectively in writing and verbally within small and larger groups, highlighting context, problems, and impacts.

What you'll bring:

• Operational excellence mindset covering design, development, testing, and deployment.
• Deep understanding of TypeScript, JavaScript, Redux, React.
• 5+ years of experience with large-scale projects using TypeScript, JavaScript, Redux, React, Java, Jest, GIT, VS Code, messaging frameworks.
• 5+ years designing applications and practicing SOLID principles.
• 5+ years deploying TDD on large-scale software.
• 5+ years developing contract-first development.
• 5+ years monitoring and addressing production issues at scale.
• 3+ years developing dashboards and data analysis with Splunk, Grafana, and BigQuery.
• Ability to create automated unit and integration tests.

- Migrated at least 2-3 large-scale projects from older to latest TypeScript and Node.js frameworks.

- Experience with orchestrating POS devices such as payment terminals, barcode scanners, or other peripherals.