SENIOR BACKEND ENGINEER

We are looking for a Senior Backend Engineer, with strong Python experience, who can also take on Scrum Master responsibilities. Experience with Go is also a big plus.

You will lead backend architecture and development across multiple products, helping take them from fast-moving applications to secure, reliable and enterprise-scale platforms.

PRINCIPAL RESPONSIBILITIES

- Lead the architecture and development of backend services across multiple products.
- Build highly available, low-latency and scalable Python APIs and services.
- Design real-time systems, including WebSockets/SSE, streaming updates and interactive workflows.
- Build content ingestion, media/document processing, indexing and asynchronous pipelines.
- Design event-driven systems, queues and background-job orchestration.
- Design robust APIs and integrations with internal and external services.
- Implement IAM, authentication, authorization and enterprise access controls.
- Design scalable object-storage and large-file workflows.
- Own backend reliability, performance, observability, security and production readiness.
- Contribute hands-on to the codebase and provide technical leadership.
- Support sprint planning and help the team remove delivery blockers.

SKILLS AND EXPERIENCE

- 8+ years of backend engineering experience, with expert-level Python.
- Strong production experience with FastAPI and Pydantic; Go experience is also valued.
- Strong experience with real-time systems, WebSockets/SSE and asynchronous architectures.




- Strong experience designing APIs, distributed systems, events, queues and background jobs.
- Strong experience with content ingestion, media/document processing, indexing and search.
- Strong knowledge of MongoDB, SQL, Elasticsearch/OpenSearch and Redis.
- Experience with object storage and large-file processing workflows.
- Strong experience with IAM, authentication, authorization and application/API security.
- Experience building for high availability, low latency, scalability and fault tolerance.
- Strong understanding of async processing, concurrency, retries, idempotency and caching.
- Production experience with GCP, Kubernetes and Docker/Podman.
- Strong experience with CI/CD, testing, monitoring, logging and performance optimisation.
- Strong architectural judgment, technical ownership and communication skills.
- Practical experience with Agile/Scrum and engineering delivery.

TECHNICAL ENVIRONMENT

Python · FastAPI · Pydantic · Go · Real-time/WebSockets · Events & Queues · Background Jobs · GCP · Kubernetes · Docker/Podman · Object Storage · MongoDB · SQL · Elasticsearch/OpenSearch · Redis · IAM· CI/CD · AI/LLM Integrations

WHAT WE ARE LOOKING FOR

A hands-on senior backend engineer and technical leader who can architect, build and operate enterprise-grade platforms.

The emphasis is on strong backend engineering: real-time systems, distributed architectures, data and content pipelines, reliability, security and production scale.

📌 Senior back end developer (España)
🏢 Videntra
📍 España