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Sr. Full Stack Engineer

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💎 Seniority level: Senior, 7+ years

💸 Salary: 165000.0 - 208000.0 USD per year

🔍 Industry: Cybersecurity

🏢 Company: Horizon3 AI

🗣️ Languages: English

⏳ Experience: 7+ years

Requirements:
  • 7+ years of experience building production applications, primarily focused on backend development.
  • Proven experience delivering backend APIs (especially GraphQL) and working with modern web stacks.
  • Comfortable contributing to and occasionally leading frontend development efforts in React/TypeScript.
  • Experience troubleshooting production infrastructure (preferably in AWS).
  • Experience collaborating with designers, developers, architects, and product managers.
  • Experience working with AI-assisted development tools and interest in leveraging AI for productivity.
  • Must have a strong background building products and features with the following tech stack: Python (strong backend proficiency expected), Javascript, React, Typescript, GraphQL, HTML/CSS/Flexbox, Git
Responsibilities:
  • Work across the stack to deliver scalable, secure, and high-performing features for our enterprise SaaS platform, with a primary focus on backend development using Python and GraphQL.
  • Build and support front-end features in React/TypeScript as needed to complete user-facing workflows.
  • Collaborate with Engineering, Product, and Design teams to break down features, own technical requirements, and help shape the roadmap.
  • Contribute to architecture decisions, own key services, and guide system design as the platform evolves.
  • Write high-quality code, enforce best practices through code reviews, and maintain strong test coverage.
  • Ensure CI/CD reliability, infrastructure stability, and app performance in AWS.
  • Lead by example, mentoring junior engineers and promoting a culture of technical excellence and continuous learning.
  • Balance hands-on development with technical leadership responsibilities
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