AI-native products. Engineered to compound value.

We build products where AI isn't bolted on — it's structural. Modern web and mobile apps, APIs, agent operation centers, and the cloud infrastructure that makes them scale. Built so the AI inside gets better with every interaction.

Web & mobile applications · Cloud migration & architecture · API design · Kubernetes & containers · CI/CD pipelines · Legacy modernization

Book a Discovery Call
100+
Products shipped to production
8yr
Average client partnership
100%
Code and infrastructure transferred to client

Web & Mobile Applications

Full-stack product builds from discovery to production. React, Next.js, React Native, Node.js — modern stacks that scale and that your team can maintain.

  • Progressive web apps
  • Native and cross-platform mobile
  • Design systems and component libraries

Cloud Migration & Architecture

We move workloads to the cloud without downtime, and architect new systems that are born cloud-native. Infrastructure as code, auto-scaling, observability built in.

  • AWS, GCP, and Azure architecture
  • Infrastructure as code (Terraform, Pulumi)
  • Cost optimization and FinOps

Legacy Modernization

We replace brittle legacy systems incrementally — strangling monoliths into services without big-bang rewrites that never ship.

  • Strangler fig migration patterns
  • API facades over legacy backends
  • Incremental decomposition into services

selected case studies

Our recent work on Product Engineering.

Source.app
SaaS & Platforms

Building a production-ready marketing attribution platform in 11 months

Kencko
Retail & E-Commerce

Scaling a foodtech DTC brand from MVP to profitability

View all case studies

The right tools for the right problems.

Frontend

  • React
  • Next.js
  • TypeScript
  • Tailwind CSS
  • Framer Motion

Mobile

  • React Native
  • Expo
  • Swift
  • Kotlin

Backend

  • Node.js
  • Python
  • Go
  • GraphQL
  • tRPC

Cloud & DevOps

  • AWS
  • GCP
  • Docker
  • Kubernetes
  • Terraform

CI/CD

  • GitHub Actions
  • GitLab CI
  • Vercel
  • ArgoCD

Databases

  • PostgreSQL
  • MongoDB
  • Redis
  • Supabase
  • PlanetScale

SELECTED clients

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

Fasten Teams certifications and partner badges

Let's talk

Ready to build something that compounds?

Whether you need a product discovery sprint, a full product build, or a legacy modernization plan, 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.