Senior Python Backend Engineer

Position: Senior Python Backend Engineer
Location: Austin TX/ Orange County / San Jose



Employment Type: Contract

Build the backend services, APIs and orchestration layer behind the Sales Command Center. The role sits between the web/iOS experiences and Dynamics 365, creating reusable services that combine CRM information with data and workflows from other enterprise platforms.

KEY RESPONSIBILITIES

Design and develop backend services using Python and FastAPI.

Build BFFs, domain APIs and reusable business services supporting the Sales Command Center.

Implement secure integration with Microsoft Dynamics 365 / Dataverse.

Build orchestration services combining CRM data, documents, customer context, sales workflows and other enterprise systems.

Implement REST APIs, asynchronous workflows and event-driven integration patterns.

Build Dynamics adapter / anti-corruption layers so UI and domain services do not become tightly coupled to CRM schemas.

Implement authentication, authorization, idempotency, retries, timeouts, circuit breakers, rate limits, caching and canonical error handling.

Develop read models and caching patterns where high-volume requests should not directly hit Dynamics.

Use Azure API Management, Service Bus / Event Grid, Key Vault and Azure Monitor / Application Insights.

Write unit, integration and contract tests and contribute to CI/CD quality gates.

Troubleshoot production and integration issues across UI, APIs, backend services and Dynamics.

Required Skills

Python

FastAPI

REST APIs and microservices

Azure application development

Azure API Management

Azure Service Bus / Event Grid

Azure Functions / App Service / containers

SQL / NoSQL

Redis or equivalent caching

OAuth 2.0 / OIDC / JWT

Observability and distributed tracing

CI/CD and automated testing

Dynamics 365 / Dataverse Web API

Dynamics workflows, security roles and service limits

PREFERRED EXPERIENCE

Headless CRM implementation experience

BFF and API gateway architecture

Event-driven read-model patterns

CRM integration with document, analytics or customer-data platforms

Financial-services technology experience