Full time · 8+ Years of Experience Job Description Key Responsibilities: As a Principal Python Engineer, you will be a technical authority for the backend platform and a driver of engineering excellence. Your responsibilities include: Owning the design, development, and operation of core backend services and APIs that power digital signatures, document workflows, identity, and integrations. Defining and evolving backend architecture to ensure scalability, security, and maintainability across cloud, on-prem, and hybrid deployments. Designing high-quality, well-documented APIs using Python (primarily FastAPI or similar frameworks), with a strong focus on consistency, performance, and ease of integration. Leading the design of core domain services, including: Signature and approval workflows Document processing, storage, and lifecycle management Authentication, authorization, roles, and permissions Integrations with external systems such as identity providers, storage services, and notification platforms Partnering closely with Product and Engineering leadership to translate complex business requirements into clear technical designs and phased delivery plans. Taking ownership of data architecture and relational database design (e.g., MySQL/PostgreSQL), ensuring data integrity, performance, and long-term scalability. Driving engineering best practices around testing, including unit, integration, and end-to-end test strategies. Identifying and addressing performance bottlenecks through profiling, query optimization, caching strategies, background processing, and concurrency patterns. Influencing and improving CI/CD pipelines and deployment workflows in collaboration with DevOps and SRE teams. Ensuring production readiness through strong observability practices (logging, metrics, tracing) and operational excellence. Acting as a technical mentor and reviewer, raising the overall quality of code, design, and decision-making across the team. Leading incident response efforts, conducting root-cause analysis, and implementing preventative architectural improvements.