Full Stack Engineer (Senior) ID52039

AgileEngine is an Inc. 5000 company that creates award\-winning software for Fortune 500 brands and trailblazing startups across 17\+ industries. We rank among the leaders in areas like application development and AI/ML, and our people\-first culture has earned us multiple Best Place to Work awards. **WHY JOIN US** If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you! **ABOUT THE ROLE** As a **Senior Fullstack Engineer** , you’ll build and optimize a multi\-tenant SaaS platform, shaping both frontend and backend systems to deliver seamless, data\-driven experiences. You’ll work with modern cloud technologies, influence product decisions, and directly impact performance, scalability, and business outcomes in a fast\-paced, high\-impact environment. **WHAT YOU WILL DO** \- Build a multi\-tenant, role\-based SaaS UI using React; \- Develop data\-heavy views powered by BigQuery; \- Implement high\-performance filtering, pagination, and caching; \- Enable secure file downloads using short\-lived GCS signed URLs; \- Design and implement backend services and integrations using Python (FastAPI); \- Deploy FastAPI services on Cloud Run; \- Build product endpoints using Cloud Functions; \- Implement authentication and authorization using Firebase; \- Develop production\-grade APIs with logging, monitoring, and reliability; \- Write performant BigQuery SQL; \- Design tenant\-safe data access patterns; \- Collaborate on dbt models and transformation logic; \- Optimize queries for cost and latency; \- Work with GCP services including BigQuery, Firestore, GCS, Cloud Run, IAM, and Secret Manager; \- Implement infrastructure as code with Terraform; \- Ensure observability, monitoring, and cost awareness; \- Contribute to building a data stack to handle AI agentic workflows. **MUST HAVES** \- **2\+ years** building production **full stack systems;** \- Strong in **Python and SQL;** \- Familiar with **GCP or AWS;** \- Strong in **React** with experience building real **SaaS dashboards;** \- Multi\-tenant **SaaS experience;** \- Comfortable shipping features end\-to\-end without handholding; \- Experienced in fast moving startup environments; \- Upper\-intermediate English level. **PERKS AND BENEFITS** \- **Professional growth:** Mentorship, TechTalks, and personalized growth roadmaps. \- **Competitive compensation:** USD\-based pay with education, fitness, and team activity budgets. \- **Exciting projects:** Modern solutions with Fortune 500 and top product companies. \- **Flextime:** Flexible schedule with remote and office options.