Sr. Full Stack Engineer - Platform

Apptegy

About The Position

At Apptegy, we are more than a tech company; we are partners dedicated to transforming how schools communicate and shape the future of education. Your work here will directly empower districts to share their stories, engage their communities, and celebrate student success. We're a team of thoughtful, high-performing individuals committed to making a tangible impact. If you're looking for a dynamic environment where you'll be supported with exceptional mentorship and resources to grow your career, come build with us. The Role As a Senior Full Stack Engineer at Apptegy, you’ll play a key role in shaping the architecture, performance, and scalability of our platform that supports thousands of school districts nationwide. You will own the delivery of reliable and high-performing software, working across the full stack with Vue.js (frontend) and Ruby on Rails (backend) to create intuitive and seamless user experiences. You will collaborate closely with product and design teams to turn complex challenges into elegant, functional solutions. This role is ideal for someone who thrives in a fast-paced environment, takes ownership of their work, and enjoys building products that have a real-world impact on educators, students, and communities.

Requirements

5+ years of professional software development experience, with a proven track record of building and maintaining secure, production-grade full-stack applications.
Proven experience implementing and scaling Identity Providers (IdP) and Auth frameworks (e.g., FusionAuth, Auth0, or custom Devise/Doorkeeper integrations in Rails).
Hands-on mastery of OAuth 2.0, OpenID Connect (OIDC), and SAML flows.
Strong understanding of modern security primitives: JWT management, Refresh Token Rotation, and secure cookie-based session handling.
Backend: Deep expertise in Ruby on Rails, including building secure APIs, managing background jobs, and architecting robust database schemas.
Frontend: Advanced proficiency in modern frameworks (e.g., React, Vue.js, or Angular), specifically regarding state management for authenticated sessions and implementing MFA/Passkey (WebAuthn) UI flows.
Experience designing scalable, high-performance systems with a "Security by Design" mindset.
Ability to protect against common vulnerabilities (OWASP Top 10), specifically focusing on XSS, CSRF, and SQL Injection.
Mastery with Scrum processes and a track record of effectively prioritizing tasks to meet deadlines and project goals.
Demonstrates accountability by taking full responsibility for assigned tasks, seeing them through to completion, and proactively addressing obstacles.
Adjusts smoothly to new tools and evolving requirements, while actively seeking to learn new skills and technologies relevant to the role.
Approaches challenges with a solutions-focused mindset and possesses Excellent problem-solving and debugging skills.

Nice To Haves

Experience with cloud platforms (e.g., AWS, Google Cloud).
Experience with database technologies (e.g., PostgresSQL, Redis).
Knowledge of DevOps practices and tools (e.g., CI/CD, Docker, Kubernetes).
Experience with FusionAuth.
Experience in the education technology sector.

Responsibilities

System Architecture & Development: Take responsibility for designing system architecture, ensuring scalability, security, and performance. Design, develop, and maintain complex full-stack applications.
Strategic Alignment: Collaborate with product managers and business leaders to align technical efforts with business goals, making significant contributions to strategic planning.
Process Optimization: Optimize development processes by decomposing large, complex tasks into manageable units of work, ensuring efficient execution.
Problem Solving: Proactively anticipate potential technical challenges before they arise and approach challenges with a solutions-focused mindset.
Mentorship: Actively mentor junior engineers, sharing knowledge and ensuring best practices are followed throughout the development cycle.
Code Quality: Lead code reviews with a focus on high-quality, maintainable code that aligns with project standards, limiting defect rates.
Collaboration: Work effectively within teams, valuing diverse perspectives and improving cross-team collaboration to manage timelines and resources effectively.
Communication: Proactively share ideas, progress, and questions with stakeholders to ensure alignment, while clearly explaining complex technical decisions and their implications.