Senior AI Platform Engineer, Agentic Workflows

About the Position

Coinis MCP is live. Run your whole ad campaign by talking to your AI. See how it works.

Soon Coinis will launch an AI media buyer that drafts, launches, and optimizes ad campaigns on its own. You build it. You design the agent loop, the tool layer, the memory layer, and the guardrails. The agent sits on top of the same Meta Business API integrations our users run manually today.

Responsibilities

• Design and ship the agentic layer that drives automated campaign decisions.
• Build a tool-use framework on top of Claude and other frontier models.
• Ship memory and state for long-running, multi-step advertising workflows.
• Define guardrails, spend caps, and escalation paths the agent must respect.
• Instrument every step. Replayable traces. Every decision auditable.
• Partner with the media buying team. Encode their real playbooks into the agent.
• Build eval harnesses that compare agent performance to human media buyers.

Requirements

Must Have

• 5+ years in backend or ML engineering.
• Production experience with LLM tool-use, function calling, or agent frameworks.
• Strong Python. Async and streaming comfort.
• Experience building systems that take real actions on behalf of users. Not just chatbots.
• Deep respect for observability, evals, and failure modes.

Nice to Have

• Anthropic Claude API, OpenAI API, or similar at scale.
• LangGraph, CrewAI, or custom agent orchestration.
• Ad tech, performance marketing, or media buying context.
• Experience with vector databases and semantic memory.

Qualifications

Education

BSc or MSc in Computer Science, ML, or related.

Experience

5+ years

Skills

• Python
• Async
• Streaming
• LLM Tool Use
• Agent Frameworks
• Observability
• Evals
• Meta Business API
• Vector Databases

We Offer

• Competitive salary in EUR.
• Equity in the SaaS spinout.
• Real agentic product, not a research demo.
• Live ad spend as the test environment. Your agent ships to real Meta accounts.
• Remote-first, flexible hours.
• AI tooling and compute budget.

About the Company

Cozy lounge Soft lights. Quiet hours. Deep work.

Whiteboard talk Sleeves up. Markers out. Ship it.

Phone booth Four of them. Bookable. Quiet.

Plant day Pots. Dirt. A little dignity lost.

Meeting room Heads down. Door closed. Done.

Paint session Rollers. Canvas. Coffee stains.

Office dog Good boy. Bad at slack replies.

Sunny desk Afternoon light. Good for the screen.

Library corner Hardcovers. Lamp on. Phone down.

Office floor Where most of the magic happens.

Art corner Paint. Paper. A little noise.

Ten-minute reset Eyes closed. Laptops asleep.

Creative session Sketchbooks. Markers. Music low.

Reading hour Book open. Tab closed.

Game night Board out. Nobody remembers the rules.

Off the clock Sofa. No laptop. Not today.

Functional Area

Engineering

Employment

Full-time

Work Hours

Flexible, EU timezones

Location

Remote (EU timezones) or Podgorica, Montenegro

Our Offices

Cozy. Quiet. Good coffee.

Some of us spend more than half of the day here. That is how good they are.