Senior Full Stack Engineer

### **Senior Full Stack Engineer (Python, FastAPI & AI-Assisted Development) – Remote** **Position Type:** Full-Time, Remote **Working Hours:** U.S. Client Business Hours (with flexibility for sprint reviews, deployments, and production support) ### **About the Role** At Pavago, one of our clients is hiring a **Senior Full Stack Engineer** to architect, build, and scale a modern tax filing platform from the ground up. This isn’t just another software engineering role. You’ll own the architecture, backend services, frontend experience, and key technical decisions behind a mission-critical platform where **security, accuracy, reliability, and scalability** are essential. You’ll work extensively with **AI-assisted development tools** such as **Cursor** and **Claude Code** to accelerate development while maintaining exceptional engineering standards and code quality. If you enjoy solving complex technical challenges, building scalable systems, and taking ownership from architecture through deployment, this role is built for you. ### **What You’ll Own** ### **Full-Stack Application Development** - Design, build, and maintain production-grade web applications. - Develop secure backend services using Python and FastAPI. - Build intuitive, responsive frontend interfaces for complex workflows. - Design scalable REST APIs and service architectures. - Integrate frontend and backend systems seamlessly. ### **System Architecture & Technical Design** - Own end-to-end application architecture. - Design scalable data models and service boundaries. - Build systems optimized for long-term maintainability. - Drive technical decisions that improve scalability, reliability, and performance. - Identify architectural risks and recommend practical solutions. ### **Backend Development** - Develop secure REST APIs using FastAPI. - Build business logic for workflow-driven applications. - Integrate third-party APIs and external services. - Optimize API performance and application responsiveness. - Develop reliable background jobs and asynchronous processing workflows. ### **Frontend Development** - Build user-friendly interfaces for: - Forms - Dashboards - Workflow management - Develop responsive, reusable UI components using modern JavaScript frameworks. - Integrate frontend applications with backend APIs. - Improve usability while maintaining accessibility and performance. ### **AI-Assisted Software Development** - Utilize Cursor and Claude Code throughout the software development lifecycle. - Build AI-assisted workflows that improve engineering productivity. - Use AI to accelerate: - Development - Debugging - Testing - Documentation - Continuously improve engineering workflows using emerging AI tools. ### **Testing, Quality & Reliability** - Develop and maintain: - Unit tests - Integration tests - End-to-end tests - Maintain high code quality standards. - Improve system stability and reliability. - Refactor code to reduce technical debt and improve maintainability. ### **Security & Data Integrity** - Implement robust validation and error handling. - Ensure secure handling of sensitive user information. - Follow best practices for: - Authentication - Authorization - Input validation - Build systems where data integrity and accuracy are critical. ### **Documentation & Collaboration** - Document architecture decisions and technical implementations. - Collaborate with Product Managers, Engineers, and stakeholders across time zones. - Participate in: - Sprint planning - Technical discussions - Code reviews - Communicate risks, blockers, and recommendations proactively. ### **What Makes You a Strong Fit** - Ownership mentality with a passion for building high-quality software. - Strong problem-solving skills and ability to work independently. - Comfortable making architectural decisions. - Excellent communication and collaboration skills. - Passion for continuous learning and AI-assisted engineering. - Strong focus on scalability, maintainability, and clea…