Python Developer

Project Description

We are building a resilient, secure, production-grade platform of Python backend services, REST APIs, asynchronous processing components, and external integrations. The system is backed by MongoDB and delivered through a React/TypeScript operational user interface with auditable operations and role-based enterprise user journeys.

Key Responsibilities

• Design and build maintainable Python services and REST APIs.
• Implement asynchronous workers and non-blocking integration patterns.
• Create typed domain models and validate complex JSON/API payloads.
• Engineer timeouts, retries, backoff, idempotency, and failure recovery strategies.
• Integrate securely with MongoDB and external services using best practices.
• Create comprehensive unit, component, and integration tests to ensure high quality code.
• Support code reviews, engineering standards, CI/CD pipelines, and production troubleshooting.
• Contribute to design decisions and support senior B8 engineers in architectural choices.

Required Skills & Qualifications

Mandatory:

• 10+ years of professional experience in software development.
• Production Python Mastery: Deep expertise in typing, modular design principles, SOLID patterns, object-oriented architecture, and established design patterns.
• REST API Development: Building production-grade APIs using FastAPI/Uvicorn or comparable frameworks with strict contracts and validation.
• Secure Development Practices: Implementation of mTLS, OAuth2/OIDC authentication, RBAC models, maker-checker segregation of duties, and secure secrets management.
• TDD & Testing: Proficiency in Test-Driven Development using pytest, including advanced mocking techniques for unit/component/integration coverage.
• NoSQL Expertise: Deep knowledge of MongoDB/NoSQL integration via PyMongo/Motor, handling transactional writes and outbox patterns effectively.
• Collaboration & Leadership: Ability to independently own complex services, contribute to technical design, diagnose production issues, and mentor/support other engineers. Responsible use of AI coding/testing assistants required.

Nice-to-have: None specified (N/A).