We are seeking a practical full-stack engineer positioned at the convergence of product, growth, and automation. If you can diagnose complex issues quickly, build robust Next.js/React code that withstands regression testing, and orchestrate Firebase/GCP infrastructure while ensuring accurate attribution data flows from Meta Pixel and Google Tags, you will deliver work that directly enhances conversion visibility and reduces operational overhead.
Your core mission is straightforward: maintain system stability, ensure the growth engine is measurable, and eliminate manual work through automation. We do not construct "platforms" as abstract exercises. We connect engineering directly to marketing and product so that instrumented funnels inform every decision. This means dependable releases, real-time performance data, accurate tracking, and rapid ship-to-impact cycles completed within days.
This role combines building with maintaining. You will be responsible for preserving foundational stability while enabling the team to move faster—deploying fixes promptly, creating processes or scripts for recurring QA needs, confirming changes through regression tests, and instrumenting user journeys so insights remain reliable. If you are energized by tangible impact, accelerated learning, and transforming chaotic pipelines into dependable systems the entire team trusts, this is your opportunity. Apply if you are prepared to own the reliability, integrations, and automations that accelerate the entire organization.
Crossover's skill assessment process combines innovative AI power with decades of human research, to take the guesswork, human bias, and pointless filters out of recruiting high-performing teams.






It’s super hard to qualify—extreme quality standards ensure every single team member is at the top of their game.
Over 50% of new hires double or triple their previous pay. Why? Because that’s what the best person in the world is worth.
We don’t care where you went to school, what color your hair is, or whether we can pronounce your name. Just prove you’ve got the skills.
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