Senior Full-Stack Developer

Client-side Development, Inc

$120K — $145K *
US-AnywhereRemote in United States
Information Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • 5+ years of experience building production web applications with strong ownership
  • Proficiency in TypeScript, with skills in React (front-end) and Node or similar (back-end)
  • Experience with real-time or high-volume data systems; knowledgeable about breakpoints
  • Strong performance optimization skills and clear explanation of performance issues
  • Ability to work independently in ambiguous situations and scope own work
  • Excellent written communication skills for code, documentation, and reviews
  • Genuine interest in web security and a desire to deepen knowledge

Responsibilities

  • Build and ship comprehensive features across the entire stack
  • Design and implement high-volume, low-latency APIs for security telemetry
  • Work with real-time data pipelines to enhance signal detection clarity
  • Transform complex security signals into user-friendly interfaces
  • Take ownership of features through the entire cycle from design to iteration
  • Enhance the performance and reliability of systems handling large-scale signals
  • Engage in code reviews and uphold engineering standards

Benefits

  • Quarterly offsite retreats
  • Generous work-from-home allowance
  • Latest MacBook provided
  • Equity through stock options
  • Competitive salary for seed-stage
  • Unlimited PTO policy allowing you to take what you need
  • Dedication to individual career development and opportunities for public speaking and entrepreneurial experience
Full Job Description
About the role:

We're looking for a full-stack developer to help build the product surface of cside - the dashboard, APIs, and customer-facing tooling that turn billions of raw browser signals into something a security engineer can act on in seconds. You'll work close to the data and close to the customer, shipping quickly against a genuinely hard technical problem.

What you will do:
  • Build and ship features across the stack, from API endpoints to the dashboard our customers live in every day
  • Design and implement APIs that serve high-volume, low-latency security telemetry
  • Work with our real-time data pipeline to surface detections clearly, without drowning users in noise
  • Turn complex security signals into interfaces that make the right action obvious
  • Own features end to end: design, implement, test, ship, measure, iterate
  • Improve performance and reliability of systems processing signals at scale
  • Contribute to code review, technical design, and the engineering standards we hold each other to
  • Partner with product and security research to take detections from prototype to production

About you:
  • 5+ years building production web applications, with real ownership of what you shipped
  • Strong TypeScript, and comfort on both sides of the stack (React on the front, Node or similar on the back)
  • Experience with real-time or high-volume data systems, and an instinct for where they break
  • You care about performance and can explain why something is slow, not just that it is
  • Comfortable with ambiguity; you scope your own work and ship without waiting to be told
  • You write clearly - code, review comments, and design docs alike
  • Genuine interest in web security; you don't need to be an expert, but you should want to become one
  • Based in the United States and authorized to work here, with at least 4 hours of daily overlap with US Pacific hours
  • Excited to travel for 2-3 company offsites per year

At cside:

Constantly learning and developing better, we grow together

We do not ship half projects, we do not sell snake oil, we don't cut corners - out of respect for our team, our customers and our community, we put a dent in the universe by building good products

Transparency and integrity above all

cside offers:

Quarterly offsite

Generous work from home allowance

Latest Macbook

Stock options

Market rate salary (seed stage)

Take what you need PTO

Our team is invested in your long term career development. If you want to talk at events, we'll make that happen, if you want to learn how to build your own startup one day, we'll offer you a front line seat. cside is built by folks like you.

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