Applied AI Engineer

Location: Hamburg, Germany; flexible hybrid model with remote work on Mondays and Fridays and office work on Tuesdays, Wednesdays, and Thursdays.

Company

hirify.global operates a rewarded user engagement and acquisition platform for mobile gaming, helping players discover and engage with games while creating value for gaming studios.

What you will do

• Design and build performant, well-tested Python/FastAPI services for AI-powered features and automations.
• Architect multi-step agent pipelines using LangGraph, CrewAI, or custom orchestration layers, including tool schemas, state management, retries, fallbacks, and human-in-the-loop controls.
• Integrate OpenAI, Anthropic, and open-source LLMs through APIs and SDKs, covering prompt engineering, context-window strategies, structured outputs, streaming, caching, and cost optimization.
• Connect external generative media tools such as Arcads, Seedance, and Runway to automated content pipelines.
• Identify and implement AI-native automations for content creation, data enrichment, QA, customer support, and internal tooling.
• Deploy and operate AWS services with the Platform team while managing observability and AI workload costs; translate ambiguous business needs into concrete solutions with product, design, and business stakeholders.

Requirements

• 5+ years of production Python experience and strong hands-on knowledge of FastAPI or similar frameworks.
• Proven experience building LLM-powered applications with prompt engineering, context management, structured outputs, and cross-provider cost optimization using providers such as OpenAI or Anthropic.
• Hands-on experience designing multi-step agent pipelines with LangGraph, CrewAI, or custom orchestration layers, including state management, tool schemas, and fallback logic.
• Experience integrating third-party APIs at scale, ideally including generative media or creative AI tools.
• Ability to write clean, tested, production-ready code and take full ownership of shipped systems.
• Ability to translate ambiguous business problems into concrete technical solutions and collaborate with non-technical stakeholders.

Nice to have

• Exposure to video, image, or audio generation APIs such as Runway, Seedance, or similar tools.
• Experience with AI quality assurance or human-in-the-loop approval workflows.
• Background in fast-paced, product-led scale-up environments.

Culture & Benefits

• Fast-paced environment focused on speed, experimentation, focused execution, and ownership.
• Direct communication, respect for others, and collaborative problem-solving.
• Transport subsidy, learning budget, wellness and gym benefits, workation, and bi-weekly team lunches.
• Hybrid work arrangement in Hamburg with home working on Mondays and Fridays.