Senior Backend Engineer - AI-Driven Ad Tech (Remote)

Seedtag; Greater London; Remote; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Home office budget €1,000

MacBook Pro

Remote or hybrid options

Trips to Madrid HQ

Language learning platform

Team activities

Job summary

Seedtag is seeking a Senior Software Engineer to join the Contextualization Platform team. You will build high-performance backend systems powering neuro-contextual advertising at scale, and transform AI innovations into production solutions that power contextual advertising across web, CTV, and in-app environments.

You'll design services in Go, integrate LLM/embedding/RAG capabilities, and contribute to scalable APIs and data pipelines while collaborating with Data Scientists, AI teams, and

Qualifications

• Strong hands-on Go experience building production backend services.
• Solid understanding of distributed systems, high-throughput or low-latency architectures.
• Hands-on experience with LLM APIs, embeddings, or RAG, with interest in AI technologies.
• Experience with cloud infrastructure, observability, and production system monitoring.
• Familiarity with Infrastructure as Code principles and tools.
• Strong problem-solving skills and a pragmatic approach to delivering reliable software.
• Ability to work autonomously and collaborate with technical and non-technical stakeholders.

Responsibilities

• Backend Development: design, build, and maintain high-throughput, low-latency services.
• AI & ML Integration: turn experiments and AI ideas into production systems.
• Scalable Architecture: develop APIs, services, and data pipelines for contextual data.
• Innovation & Experimentation: prototype and test new approaches for contextual understanding.
• Platform Evolution: improve system performance, reliability, and scalability.
• Cross-Functional Collaboration: work with Data Scientists, AI teams, and Product Managers.
• Engineering Excellence: write clean, maintainable code balancing quality and speed.

Skills

Golang

Distributed systems

LLM APIs

Embeddings

RAG

Cloud infrastructure

Observability

Infrastructure as Code

Problem solving

Autonomy & collaboration

Tools

Terraform

Job description

Seedtag is seeking a Senior Software Engineer to join the Contextualization Platform team. You will build high-performance backend systems powering neuro-contextual advertising at scale, and transform AI innovations into production solutions that power contextual advertising across web, CTV, and in-app environments.

You'll design services in Go, integrate LLM/embedding/RAG capabilities, and contribute to scalable APIs and data pipelines while collaborating with Data Scientists, AI teams, and