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airSlate logo
airSlate

Empowering anyone to create, innovate, automate, and digitally transform their workflows.

Senior JavaScript Engineer

Backend EngineerSoftware EngineerFull TimeRemoteSeniorTeam 501-1,000H1B SponsorCompany SiteLinkedIn

Location

Poland

Posted

128 days ago

Salary

0

Seniority

Senior

Bachelor Degree5 yrs expEnglishJavaScriptNext.jsReactSassTypeScript

Job Description

Senior JavaScript Engineer

airSlate

• Develop and deliver new product features from concept to release • Maintain, improve, and refactor existing functionality to ensure scalability and reliability • Continuously enhance product performance and user experience • Collaborate closely with Product and Design teams to iterate on ideas and transform prototypes into high-quality solutions • Optimize application performance, including load time and runtime efficiency • Partner with engineering teams across the organization to align on architecture and shared initiatives

Job Requirements

  • 5+ years of professional experience building production-grade applications with TypeScript/JavaScript
  • Advanced experience with React, including modern rendering patterns (SSR, CSR, hydration, Server Components)
  • Hands-on experience with Next.js
  • Experience building and maintaining reusable component libraries and design systems, including Web Components
  • Solid experience developing Single-Page Applications and scalable frontend systems
  • Strong foundation in modern CSS/SCSS and utility-first styling approaches
  • Deep understanding of client-side architecture (state management, data synchronization, form handling, validation patterns)
  • Experience delivering performant, accessible (WCAG-compliant), and production-ready user interfaces
  • Ability to write maintainable, testable, and reliable code
  • Comfortable working in collaborative, Git-based environments
  • Takes ownership of work, proactively addresses dependencies, and supports team delivery
  • Demonstrates curiosity, continuous learning, and knowledge sharing

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