Senior Back End Developer

Videntra; Belgique; Sur place; EUR 90 000 - 125 000; Plein temps

Résumé du poste

Videntra is seeking a hands-on Senior Backend Engineer with strong Python experience and Scrum Master responsibilities. You will lead backend architecture across multiple products, building secure, scalable platforms and real-time systems with WebSockets and streaming updates.

You will design APIs, handle content ingestion and processing pipelines, and own reliability, performance and production readiness. Go experience is a plus, and collaboration with cross-functional teams is essential.

Qualifications

• 8+ years of backend engineering experience.
• Expert-level Python development and design.
• Strong experience with FastAPI and Pydantic; Go experience is valued.
• Experience with real-time systems, WebSockets/SSE and asynchronous architectures.
• Design APIs, distributed systems, events, queues and background jobs.
• Content ingestion, media/document processing, indexing and search.
• Knowledge of MongoDB, SQL, Elasticsearch/OpenSearch and Redis.
• Object storage and large-file processing workflows.
• IAM, authentication, authorization and security.
• High availability, low latency, scalability and fault tolerance.
• Async processing, concurrency, retries, idempotency, caching.
• CI/CD, testing, monitoring, logging and performance optimization.
• Agile/Scrum and engineering delivery.

Responsabilités

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

Connaissances

Backend experience

Python expert

Real-time systems

API design

Agile/Scrum

Technical leadership

Architectural judgment

Distributed systems

Outils

FastAPI

Pydantic

Go

MongoDB

SQL

Elasticsearch/OpenSearch

Redis

WebSockets

Kubernetes

Docker/Podman

GCP

Description du poste

We are looking for aSenior 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.
• Designreal-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.
• ImplementIAM, 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 withFastAPI and Pydantic;Go experience is also valued.
• Strong experience withreal-time systems, WebSockets/SSE and asynchronous architectures.
• Strong experience designingAPIs, distributed systems, events, queues and background jobs.
• Strong experience withcontent ingestion, media/document processing, indexing and search.
• Strong knowledge ofMongoDB, SQL, Elasticsearch/OpenSearch and Redis.
• Experience withobject storage and large-file processing workflows.
• Strong experience withIAM, authentication, authorization and application/API security.
• Experience building forhigh availability, low latency, scalability and fault tolerance.
• Strong understanding of async processing, concurrency, retries, idempotency and caching.
• Production experience withGCP, 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

WHAT WE ARE LOOKING FOR

Ahands-on senior backend engineer and technical leaderwho 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.