Hi — we're Hypefy, a Croatian-based start-up.

We're building AI agents that run influencer marketing end-to-end: campaign creation, creator selection, outreach, content checks, payments, reporting — all automated, all at scale.

This isn't AI as a feature. It's AI as the core of how the product works. We want someone who's actually built production AI systems — not just experimented with them — and wants to push that further.

What you'll work on

• You'll design, build, and improve the AI systems that power the Hypefy platform — from the orchestration layer down to the prompt and model level.

• Architect and maintain multi-step AI agent workflows for campaign automation, creator outreach, and content evaluation

• Own the full reliability stack for AI features: structured outputs, schema validation, retries, fallbacks, and observability

• Work with LLMs in production — prompt engineering, model selection, evaluation, iteration

• Build pipelines for creator matching, content analysis, and automated decision-making

• Integrate AI capabilities into existing backend systems (Node.js) without introducing fragility

• Instrument and monitor AI systems — latency, accuracy, failure modes — and improve them continuously

• Evaluate new models, tools, and approaches and bring the best ones into production

How We Work

• Small, senior-leaning engineering team

• High ownership, low bureaucracy

• You'll collaborate directly with product and founders

• We use AI tools aggressively — in our product and in how we build it

What We're Looking For

Required

• Experience building AI agent systems or LLM-powered features in production

• Comfort with prompt engineering, evaluation, and iterative improvement

• Strong software engineering fundamentals — this is an engineering role, not a research role

• Experience handling the reliability challenges of LLM outputs: non-determinism, latency, structured output validation, fallbacks

• Clear thinking about where AI adds value and where it creates risk

• Comfortable working in Python

Nice to Have

• Experience with orchestration frameworks (LangChain, LlamaIndex, or custom)

• Experience with fine-tuning or embedding-based retrieval (RAG)

• Background in NLP, content understanding, or classification tasks

• Experience in SaaS, marketplaces, or automation-heavy platforms

• Prior work integrating with Instagram, TikTok, or creator platforms

• Comfortable working in Node.js

Why Join Hypefy

• AI is central to the product — not a side project or an experiment

• Real production systems with real users — you'll see the impact of your work immediately

• Direct influence on how we use AI across the platform as we scale

• A team that takes engineering quality seriously, even when moving fast