Senior Python Engineer - Scalable Billing Orchestrator

Manychat, Inc; Barcelona; Presencial; EUR 70.000 - 110.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Hybrid onboarding & relocation

Health insurance for you and family

Development budget for conferences &学习

Flexible benefits

Hybrid work & generous leave

In-office meals & snacks

Team offsites

Descripción de la vacante

Manychat, Inc. is hiring a Senior Python Engineer to build and evolve a Python-based platform layer that extends and scales Manychat’s eng core, acting as a bridge and execution environment for high-load, business-critical workflows.

Your main focus is designing systems that decouple complexity from the core, enable scalable execution of business logic, and provide reliable cross-service communication, while maintaining production readiness and observability.

Formación

• 5+ years of commercial Python development in production environments.
• Strong expertise in modern Python frameworks (FastAPI preferred; Django/Flask acceptable).
• Solid experience designing and integrating APIs (including third-party services).
• Strong understanding of async programming and concurrency (AsyncIO, non-blocking I/O).
• Experience working with PostgreSQL and large datasets.
• Experience building and maintaining high-load backend systems.
• Strong testing practices (unit and integration tests; PyTest preferred).
• Experience with CI/CD pipelines and Docker.
• Strong ownership and product mindset — able to align with stakeholders and connect engineering work to business impact.

Responsabilidades

• Design and build a Python-based platform layer that integrates with the core system.
• Define and evolve patterns for service communication, orchestration, and responsibility split between core and Python services.
• Develop scalable, async services handling high-load and latency-sensitive workflows.
• Own API contracts between systems, ensuring stability, backward compatibility, and clear boundaries.
• Identify and extract functionality from the core into scalable services where it improves performance or maintainability.
• Ensure reliability of cross-system interactions through observability (monitoring, logging, tracing).
• Design for failure: retries, idempotency, consistency guarantees.
• Drive engineering quality: testing strategy, CI/CD, safe rollout practices.
• Work closely with Platform and Product teams to align architecture with business needs.
• Contribute to long-term platform scalability, not just feature delivery.

Conocimientos

Python (5+ yrs)

FastAPI

Django/Flask

AsyncIO

NoSQL knowledge

PyTest

CI/CD

Docker

Ownership mindset

Herramientas

PostgreSQL

Descripción del empleo

Manychat, Inc. is hiring a Senior Python Engineer to build and evolve a Python-based platform layer that extends and scales Manychat’s eng core, acting as a bridge and execution environment for high-load, business-critical workflows.

Your main focus is designing systems that decouple complexity from the core, enable scalable execution of business logic, and provide reliable cross-service communication, while maintaining production readiness and observability.