Custom AI agents. Built to run inside your business.

We move agentic AI past the prototype: production agents with multiagent orchestration, guardrails, monitoring, and the integration into existing systems most pilots skip. We're a full-stack AI and product engineering agency in Berlin and Sydney.

Agentic AI workflow services · Multiagent architecture · Agent orchestration · Agent governance & security · LLM integration · RAG systems

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12+
Production AI agents shipped
6-12wk
Pilot to production
100%
Code, prompts, and weights transferred to client

Multiagent Systems & Agent Engineering

Production-grade agents that plan, decide, and act under guardrails. Multiagent architecture and orchestration integrated with the tools your team already uses.

  • Customer service and support automation
  • Document processing and extraction
  • Engineering function agents

Agent Governance & Security

Production agents are services, not prompts. Guardrails, evals, and audit trails so your team sees what the agents did and why.

  • Regulated industries
  • Audit trails and compliance evidence for security reviews
  • Production hardening for pilots that need to ship

Agentic Workflow Automation

Agents alongside humans, not in place of them. Human-in-the-loop surfaces and operation centers where your team approves, escalates, and oversees what the agents do.

  • Approval chains and decision routing
  • Document and case workflows with exception handling
  • Operations dashboards for human–agent oversight

selected case studies

Our recent work on AI & Agents.

European RegTech Startup
SaaS & Platforms

Automating regulatory and supplier diligence for European cosmetic brands. 75% saved per audit

Source.app
SaaS & Platforms

Building a production-ready marketing attribution platform in 11 months

View all case studies

The right tools for the right problems.

LLMs & Foundation Models

  • Anthropic
  • OpenAI
  • AWS Bedrock
  • Mistral

Vector Databases & Search

  • Pinecone
  • pgvector
  • Elasticsearch
  • Supabase Vector

Orchestration & Agents

  • LangChain
  • CrewAI
  • Vercel AI SDK
  • N8N

Multi-Modal & Gen-Media

  • ComfyUI
  • Suno.ai
  • Synthesia
  • Adobe Firefly
  • ElevenLabs

Cloud & DevOps

  • Amazon Web Services
  • Google Cloud Platform
  • Cloudflare
  • Vercel
  • Supabase

Observability & Evaluation

  • Langfuse
  • CloudWatch
  • PostHog

SELECTED clients

Behind every logo is a system we engineered, shipped, and scaled.

Fasten Teams certifications and partner badges

Let's talk

Ready to put AI to work?

Whether you need an AI readiness assessment, a strategy for your first agent, or a full production build, tell us where you are.

FAQ

What people ask about Fasten Teams.

Fasten Teams is an end-to-end digital product and growth studio with offices in Berlin and Sydney. We architect the software and engineer the growth — building web, mobile, AI, and cloud products, then scaling them with performance marketing, technical SEO, and brand work. One elite team, one unified strategy.