Spark Eighteen

Senior Full Stack Engineer – React.js

Spark Eighteen

full-time

Posted on:

Location Type: Remote

Location: United States

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Job Level

Senior

Tech Stack

JavaScriptNode.jsReactTypeScriptVue.js

About the role

  • Help build a world-class UI/UX for our platform using React, TypeScript, and Asterisk, our custom design system.
  • Play a key role in crafting clean, maintainable, secure, and high-performing front-end solutions while modernizing existing codebases to improve performance and development velocity.
  • Collaborate closely with cross-functional stakeholders to solve complex engineering challenges, build reusable and responsive UI components, manage application state, optimize performance, and contribute to API design where needed.
  • Proactive problem-solver who thrives in dynamic environments, values feedback and collaboration, and is excited to contribute to a passionate, high-performing team building impactful products.

Requirements

  • 6+ years of experience shipping enterprise-grade products
  • 6+ years of extensive hands-on experience and strong proficiency in JavaScript, TypeScript, React, and CSS
  • Experience building highly reusable UI components and writing comprehensive unit and integration tests
  • Experience with API design and development
  • Experience working with modern software engineering development and automation tools such as Git and CI/CD pipelines
  • Strong problem-solving skills with the ability to dive deep, experiment, learn quickly, and independently drive solutions
  • Demonstrated ability to translate complex business requirements into elegant, user-centric software solutions
  • Ability to work flexibly with UI/UX specifications and requirements, delivering precise behavior, look and feel, and contributing to the creation of supporting backend APIs
  • Experience as a meaningful contributor to data-driven architectures at scale
  • Humble yet opinionated mindset, with the ability to adapt when better solutions emerge
  • Active collaborator who seeks and provides feedback early and often, and thrives in a team-oriented development process
  • Comfortable working both independently and within a collaborative team environment
  • Ability to make measurable progress in dynamic environments with competing priorities
  • Excellent written and verbal communication and interpersonal skills
  • Experience with AI technologies such as CoPilot, Cursor, MCP servers, agentic platforms, or similar tools
  • Experience with Node.js, Tailwind, TanStack, Zod, and Vue
  • Experience in the no-code/low-code industry
  • A degree in Computer Science or Software Engineering
  • Experience working with custom design systems and accessibility best practices
Benefits
  • Comprehensive insurance coverage that gives you peace of mind, so you can focus on doing your best work
  • Flexible work arrangements designed to support sustained productivity, personal well-being, and work-life balance
  • Continuous learning and accelerated skill development through hands-on projects and mentorship from experienced industry leaders
  • Global client exposure across 20+ countries, offering real-world experience with diverse markets and business environments
  • Opportunity to work on high-impact, large-scale projects that have collectively generated over $1B in measurable business value
  • Competitive, market-aligned compensation packages that recognize performance, expertise, and long-term contribution
  • Monthly demo days that celebrate innovation, showcase your work, and give you a real voice in what we build
  • Annual recognition programs and performance-driven awards in a truly meritocratic environment
  • Referral bonuses that reward you for helping grow a strong, like-minded team
  • A strong problem-solving culture with opportunities to tackle meaningful, real-world challenges
  • A positive, people-first workplace that supports happiness, balance, and long-term growth
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
JavaScriptTypeScriptReactCSSAPI designunit testingintegration testingGitCI/CDNode.js
Soft Skills
problem-solvingcollaborationadaptabilitycommunicationindependencefeedbackflexibilityuser-centric designteam-orienteddynamic environment
Certifications
degree in Computer Sciencedegree in Software Engineering