(Senior/Staff) AI Engineer - Agentic Systems (m/f/d)
Company Overview
At Acto, we’re building agentic AI systems that go beyond chat, systems that reason, act, and deliver results across complex real-world workflows for field sales teams.
Our mission is to turn enterprise data and tools into intelligent, decision-capable agents that support people where it matters: in meetings, in daily operations and on the road. We're a small, product-focused team combining deep experience in AI, ML engineering, and systems design.
We started in 2021 and since then have not only been able to win renown medium-sized companies as customers, but also bring experienced investors such as 468 Capital and Cusp Capital on board.
Acto's intelligent AI assistant helps wholesale and manufacturing sales teams measurably boost revenue: - Prioritize customers by real revenue potential - Prepare targeted meetings - even while on the road - Soon: Effortlessly follow up Acto spots the needle in the haystack—identifying churn risks and cross-sell gold from thousands of customers and products. The right action, right time, right in your workflow: Mobile, ERP, CRM, or Outlook. The payoff: - Catch churn before it happens - Turn hidden opportunities into revenue - Work smarter, not harder—no more drowning in reports Office supplies to medical tech—companies like Schäfer Shop, Hitado, and Böllhoff are already seeing the results.
Job Summary
We’re looking for an experienced (Senior/Staff) AI Engineer (m/f/d) to help build the next generation of agentic AI systems powered by Large Language Models (LLMs). You’ll be working at the intersection of reasoning, tool-use, and memory, designing intelligent agents that operate in complex environments, interact with APIs and structured data, and drive real-world outcomes. This is a hands-on role for someone who wants to go beyond prompt engineering, building robust decision pipelines and shipping product-ready agents across both text and voice modalities. At Acto, you’ll go beyond building chatbots and design full decision-making systems across text and voice. You’ll shape how humans and AI collaborate in real-world workflows, working on the frontier of agentic AI.
Key Responsibilities
- Design & Optimize Workflows: Design, implement, and optimize agentic workflows using LLMs.
- Build Tool-Using Agents: Create agents that interact with external APIs, databases, and environments.
- Develop Voice Agents: Work on voice-enabled agents, including pipeline design, transcription, and dialogue management.
- Integrate Memory & State: Implement retrieval, long-term memory, and state tracking into agent architectures.
- Deploy in Production: Collaborate with product teams to deploy agents in production.
- Evaluate & Improve: Design and run experiments to evaluate agent performance, correctness, and hallucination rates
- Translate Product Needs: Turn high-level product requirements into scalable, testable agentic features
Requirements / Qualifications
- LLM Expertise: Strong experience building with LLMs (e.g., OpenAI, Claude, Mistral, open-source models)
- Agentic Frameworks: Familiarity with agentic frameworks (e.g. LangChain)
- Programming Proficiency: Proficient in Python and modern ML tooling (e.g., Hugging Face, PyTorch, Ray, etc.)
- Tool Integration: Experience with tool integration, calling APIs, managing memory/state, or SQL query generation
- Voice AI: Experience working with voice agents, ASR, or TTS pipelines—or a strong willingness to learn them
- Startup Mindset: Comfortable in an iterative, fast-paced product environment
- Authorized to work in Germany
Location
Berlin, Germany, Remote: False
Employment Type
Full Time
Salary & Benefits
- Development Opportunities: Steep development opportunities without entrenched hierarchies.
- Culture: We are an ambitious team that wants to achieve a lot with Acto, but we don't take ourselves too seriously and like to have fun together, be it working together or at regular team events.
- Flexibility: Berlin-based with flexible remote work. You can work from home often, with regular in-person time in our Berlin office, particularly for key meetings and collaboration.
- Health & work-life balance: Enjoy 30 days of vacation and an attractive Wellhub membership.
- Ownership: Whether you are an intern or a full-time acto-naut, Acto instills a deep sense of ownership, where every team member is entrusted with meaningful responsibilities and the autonomy to make impactful decisions.
- Equipment: You will receive a state-of-the-art hardware setup with a choice between Mac and Windows.
