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BrainPOP, owned by KIRKBI (the LEGO family investment company), is seeking a Senior Full Stack Developer to join its engineering team. The company reaches an estimated 25 million students annually across two-thirds of U.S. school districts, providing engaging digital learning experiences for educators and families worldwide.
In this role, you will own complex features end-to-end, from design and technical planning through launch and production support. You'll work across the full stack using PHP (Laravel) on the backend and Vue.js on the frontend, making architectural decisions that balance delivery velocity with long-term maintainability and scalability.
Key responsibilities include:
**Feature Development & Technical Ownership**
- Design, build, ship, and maintain full-stack features using PHP (Laravel) and Vue.js
- Own complex projects end-to-end, from requirements clarification through rollout and ongoing support
- Shape application architecture while balancing delivery needs with scalability
- Write clean, well-tested code and provide thoughtful code reviews to raise team quality
- Improve application performance, reliability, responsiveness, and accessibility
**AI Integration & Tooling**
- Build and integrate AI/LLM capabilities that automate workflows and enhance user experience
- Evaluate models, prompting strategies, and AI evaluation frameworks considering quality, reliability, cost, and privacy
- Collaborate on AI-assisted features such as automated content generation and intelligent study tools
- Help transition promising AI experiments into reliable, production-ready solutions
**Collaboration & Quality**
- Work closely with Product, Design, and Engineering peers to translate ideas into practical technical solutions
- Break down complex work, identify risks and dependencies, and contribute to realistic delivery plans
- Mentor developers through code reviews, pairing, and knowledge sharing
- Write unit and integration tests; strengthen testing practices across the team
- Use observability tools (e.g., New Relic) to investigate issues, monitor application health, and prevent recurring problems
- Contribute to sprint planning and team process improvements
**Requirements**
- 5+ years of professional web development experience with substantial hands-on work across backend and frontend
- Strong proficiency in PHP (Laravel) or Node.js, with readiness to work with Laravel
- Experience building modern, interactive applications with Vue.js or similar frameworks (React)
- Hands-on experience building or integrating LLM-powered features in production
- Experience with prompt engineering, model evaluation, and monitoring AI-powered systems
- Strong understanding of relational databases (MySQL/PostgreSQL), API design, and application architecture
- Proven ability to independently deliver complex features and support them in production
- Ability to explain technical trade-offs and make sound decisions around performance, security, scalability, and maintainability
- Experience mentoring developers and providing constructive code-review feedback
- Collaborative, practical approach to problem-solving with willingness to learn new technologies
**Nice to Have**
- Knowledge of cloud infrastructure (AWS/GCP) and CI/CD best practices
- Familiarity with Docker or containerized development environments
