Lightspark

Full Stack Engineer, Spark

Lightspark

full-time

Posted on:

Origin:  • 🇺🇸 United States • California

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Salary

💰 $170,000 - $200,000 per year

Job Level

Mid-LevelSenior

Tech Stack

GoJavaScriptKotlinReactReact NativeRuby on RailsSparkTypeScript

About the role

  • Design, build, and maintain SDKs used by partners to integrate with Spark’s backend services
  • Work across multiple languages and platforms, primarily JavaScript/TypeScript, and expand to Kotlin, Go, and others
  • Build core functionality and developer tools for high-volume enterprise customers
  • Collaborate with engineers, product managers, and partner teams to deliver reliable, high-quality software
  • Ensure SDKs are well-tested, well-documented, and easy for developers to adopt
  • Contribute to architecture and design of new features with scalability and performance in mind
  • Adapt quickly to new technologies, languages, and requirements as the product evolves
  • Maintain a high bar for engineering excellence in a fast-paced, collaborative environment

Requirements

  • 3+ years of fullstack engineering experience
  • Strong experience with JavaScript/TypeScript
  • Willingness and ability to work across multiple languages (e.g., Kotlin, Go)
  • Experience building SDKs, APIs, or developer tools is a plus
  • Experience with React Native and/or mobile development is a plus
  • Crypto, fintech, or side project experience is a plus
  • Proven ability to work independently and deliver high-quality results under tight timelines
  • Adaptability and resourcefulness in solving problems across unfamiliar tech stacks
  • Strong collaboration skills and a proactive approach to driving initiatives forward
  • Bachelor's degree in Computer Science, or equivalent is a plus but not required
  • Living in, or willing to relocate, to Los Angeles, CA
  • Must be legally authorized to work in the United States (applicant form asks)