We are seeking a full-stack engineer who operates at the convergence of product development, growth strategy, and automation. If you can identify and resolve complex issues efficiently, write robust Next.js/React code that withstands thorough regression testing, and orchestrate Firebase/GCP infrastructure while ensuring accurate attribution data flows from Meta Pixel and Google Tags, your contributions will directly enhance conversion tracking and reduce operational overhead.Your core mission is straightforward: maintain system stability, ensure the growth infrastructure is fully measurable, and eliminate manual repetitive tasks through automation. We do not construct "platforms" as theoretical exercises. Instead, we connect engineering directly to marketing and product functions so that decisions are informed by instrumented conversion funnels. This translates to consistent deployments, real-time performance metrics, dependable tracking implementations, and rapid iteration cycles measured in days rather than weeks.This position combines building with maintaining. You will serve as the individual who preserves foundational stability while enabling organizational velocity—delivering timely fixes, creating reusable processes or scripts to address recurring QA requirements, confirming changes through regression validation, and instrumenting user journeys to ensure insight accuracy. If you find fulfillment in tangible impact, accelerated learning, and transforming chaotic pipelines into streamlined systems that empower the entire team, this responsibility is yours to claim. Apply if you are prepared to take ownership of reliability, integrations, and the automation layer that accelerates the broader organization.
What You Will Be Doing
- Core System Maintenance: Understand the architecture, diagnose and fix bugs, and oversee QA and release protocols
- Marketing Tool Integrations: Implement and sustain marketing tracking and attribution infrastructure leveraging Meta Pixel and Google Tags
- Automation: Develop scripts and dashboards to maximize workload delegation to automated systems
- Growth & Marketing Website Support: Support and refine Webflow and marketing properties
What You Won’t Be Doing
- Setting product roadmaps or designing growth experiments
- Developing entirely new features or backend architectures from the ground up
- Engaging in complex system architecture design
JavaScript Developer Key Responsibilities
- Empower Growth and Product teams to execute with greater speed and efficiency by enhancing conversion visibility and minimizing operational friction
Basic Requirements
- A minimum of 3 years of full-stack development experience
- Proven experience with TypeScript, Next.js, React, and Node
- Background in maintaining a direct-to-consumer technology product serving live users
- Hands-on experience with Firebase and the GCP stack
- Experience constructing Webflow websites and enabling A/B testing
About Legends
Legends is a confidence-training app that builds legendary kids. Designed for kids ages 7-11 and their parents, families receive 5-minute confidence "workouts" with inspiring videos about legendary people—from celebrated artists and athletes to trailblazing scientists—plus interactive exercises that reinforce the theme of the day. 5 minutes of practice a day, confidence for a lifetime.There is so much to cover for this exciting role, and space here is limited. Hit the Apply button if you found this interesting and want to learn more. We look forward to meeting you!
Working with us
This is a full-time (40 hours per week), long-term position. The position is immediately available and requires entering into an independent contractor agreement with Crossover as a Contractor of Record. The compensation level for this role is $30 USD/hour, which equates to $60,000 USD/year assuming 40 hours per week and 50 weeks per year. The payment period is weekly. Consult www.crossover.com/help-and-faqs for more details on this topic.Crossover Job Code: LJ-5703-IN-COUNTRY-JavaScriptDeve.003
