Senior Backend Engineer - AI-Powered Contextual Ads

Seedtag; Madrid; Hybrid; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Home office budget up to €1,000

HQ trips to Madrid

MacBook Pro M3

Remote or hybrid options in multiple e

Learning platform

Job summary

Seedtag is seeking a Senior Software Engineer to join the Contextualization Platform team. You will design and build high-performance backend services using Go, transform AI innovations into reliable production solutions, and develop data pipelines to process large contextual data at scale.

You’ll collaborate with Data Scientists, AI teams, and Product Managers to deliver solutions with measurable business impact, shaping the platform for OpenWeb, CTV, and in-app environments.

Qualifications

• Strong hands-on Golang experience building production services.
• Solid understanding of distributed systems for high-throughput/low-latency workflows.
• Experience with LLM APIs, embeddings or RAG in production.
• Experience with cloud infrastructure, monitoring, and observability.
• Familiarity with Infrastructure as Code (Terraform, etc.).

Responsibilities

• Design, build, and maintain high-throughput backend services in Go.
• Integrate AI/ML capabilities into production systems.
• Develop data pipelines for contextual data processing at scale.
• Collaborate with Data Scientists, AI teams, and Product Managers.
• Contribute to architectural decisions to improve performance and reliability.

Skills

Golang experience

Distributed systems

LLM APIs

Cloud infrastructure

Observability

Education

Bachelor's in CS

Tools

Terraform

CI/CD

Kubernetes

Job description

Seedtag is seeking a Senior Software Engineer to join the Contextualization Platform team. You will design and build high-performance backend services using Go, transform AI innovations into reliable production solutions, and develop data pipelines to process large contextual data at scale.

You’ll collaborate with Data Scientists, AI teams, and Product Managers to deliver solutions with measurable business impact, shaping the platform for OpenWeb, CTV, and in-app environments.