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 and build 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, scalability, accuracy, and reliability are essential. You’ll work extensively with AI-assisted development tools such as **Cursor** and **Claude Code** to accelerate development while maintaining exceptional code quality and engineering standards. If you enjoy solving complex technical problems, building scalable software, and taking ownership from architecture through deployment, this role is a strong fit. ### **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. - Deliver maintainable, high-quality software across the full application stack. ### **System Architecture & Technical Design** - Own end-to-end application architecture. - Design scalable data models and service boundaries. - Build systems designed for long-term maintainability and growth. - Drive technical decisions that improve scalability, reliability, and performance. - Identify technical risks early 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 application performance and API responsiveness. - Build reliable background jobs and asynchronous processing workflows. ### **Frontend Development** - Build responsive, user-friendly interfaces for dashboards, forms, and workflow management. - Develop reusable UI components using modern JavaScript frameworks. - Integrate frontend applications with backend APIs. - Improve usability while maintaining accessibility and performance. ### **AI-Assisted Software Development** - Leverage Cursor and Claude Code throughout the software development lifecycle. - Build AI-assisted engineering workflows that improve developer productivity. - Use AI tools to accelerate implementation, debugging, testing, refactoring, and documentation. - Continuously improve engineering workflows using emerging AI technologies. ### **Testing, Quality & Reliability** - Write and maintain: - Unit tests - Integration tests - End-to-end tests - Maintain high code quality standards. - Improve platform reliability and application stability. - Refactor code to reduce technical debt and improve maintainability. ### **Security & Data Integrity** - Implement robust validation, authentication, and authorization. - Ensure secure handling of sensitive financial and user data. - Follow security best practices throughout the application lifecycle. - Build systems where data integrity and accuracy are critical. ### **Documentation & Collaboration** - Document architecture decisions, APIs, and technical implementations. - Collaborate with product managers, engineers, and stakeholders across time zones. - Participate in sprint planning, architecture discussions, and code reviews. - Communicate blockers, risks, and technical recommendations proactively. ### **What Success Looks Like** - High-quality features delivered on schedule. - Secure, reliable, and scalable application architecture. - Strong automated test coverage and low production error rates. - Maintainable, well-documented c…