Your partner for demanding projectsin Web, Mobile and AI.

We augment your team or take ownership of your web, mobile, or AI project end to end. Plus AI automations that save time and money. Legally secure as a German GmbH with a Google Developer Expert on the team.

Sebastian Engel und Esra Kadah, Antigua Mobile Team bei Google Gemini API Sprints
Google Developer Expert on the team

Team augmentation, project delivery
and AI from one partner

Whether you need to strengthen your existing team or solve a specific problem:
We're here for you.

Team Augmentation & Project Delivery

We augment your team with senior engineers or take ownership of your web, mobile, or AI project end to end. Both flexible, legally secure, and at senior level.

Senior expertise and experience from day one
Embedded in your team or full project ownership
Fixed price or Time & Material depending on phase
No bogus self-employment risk thanks to a GmbH contract

AI Integration & Automation

We build AI solutions that actually land in your business processes and deliver measurable value. Beyond experiments. Real production use.

Process automation with measurable time savings
Chatbots, automated document analyses & more
Intelligent features: personalization, recommendations, search
Tech stack: Claude, Gemini, Vertex AI, Firebase AI & more

Full expertise. Zero compromise.

An experienced senior core team, flexibly extendable for larger projects through our network of vetted developers and freelancers. As a GmbH, we're your legally secure contractual partner, bearing the compliance risk.

Esra Kadah, Google Developer Expert

Esra Kadah

Senior Flutter & AI EngineerGDE · Author
Google Developer Expert

As a Google-certified Flutter expert, Esra combines technological excellence with community leadership. Her GDE certification gives you access to Google insights and early-access features.

Co-author: Flutter Design Patterns (Packt 2024)
60+ international talks · 150+ tech events organized
Expert: Material 3 Expressive, Design Psychology, Gemini AI
Community Lead: Flutteristas, Flutter Berlin, FCAIC
Sebastian Engel, Tech Lead

Sebastian Engel

Senior Software Engineer · CEO
13+ Jahre Mobile Engineering

Software engineer with over 13 years of experience. Sebastian is responsible for architecture, quality, and the long-term operation of your products, and integrates AI automations where they measurably save time and money.

13+ years senior software engineering
Enterprise: ImmobilienScout24, AOK, Deutsche Telekom
AI-assisted development with modern tools & automation
Managing Director Antigua Mobile GmbH

Results in production

Our work runs in daily use with real customers. A selection of projects we've delivered or helped shape as engineering partners.

McFit Flutter App

McFit

Flutter app for Europe's largest fitness chain. Part of a shared platform serving multiple fitness brands.

John Reed Fitness App

John Reed Fitness

Premium fitness app for the John Reed studios. Shared technical foundation with McFit, independent brand identity per app.

Gold's Gym App

Gold's Gym

International fitness brand with its own app experience. Same technical foundation as McFit and John Reed, separate brand identity.

ImmobilienScout24

ImmobilienScout24

Germany's largest real-estate platform with millions of users. Multi-year development of the Android app.

Berliner Stadtreinigung App

Berliner Stadtreinigung

Official app of Berlin's sanitation service. Waste calendar, neighborhood map, and service requests for the capital.

AOK App

AOK

Digital health insurance app used by millions. Claims, certificates, and e-prescriptions right on your phone.

Fortytools Field Service App

Fortytools Field Service App

5 years in production. Comprehensive field service platform: scheduling, time tracking, digital documentation. Offline-capable with automatic sync.

Notebooksbilliger.de App

Notebooksbilliger

E-commerce app for Notebooksbilliger.de with millions of items. Personalized offers, fast checkout, and order tracking.

Bayern App

Bayern App

Official app of the Free State of Bavaria with over 2,000 government services. Native Android app for millions of citizens.

More clients & projects
EU Energy Label · Deutsche Telekom · EyeEm · Lumeus · Aitme · gesetze.io · Tier/Circ · Funk (ARD/ZDF)

Trusted by

What our clients and partners say

Working with Sebastian Engel and his team was a real game-changer for us. Through targeted automation of our processes and the intelligent use of AI, we've been able to save several hours per week.

What's particularly impressive is that we haven't just become more efficient. We've simultaneously raised the quality of our consulting work. It's exactly this combination of time savings and quality improvement that makes the difference.

A clear recommendation for anyone looking to future-proof their business.
Foto von Dominik Perschke
Dominik Perschke
Managing Director, Steuerarchitektur
Sebastian is a very structured and thorough developer. He is highly experienced and not only excelled in his tasks but could also offer valuable strategic advice.
Foto von Tianyu Yuan
Tianyu Yuan
CEO & Co-Founder, LEX Superior
When it comes to automation, I deliberately pick partners who think along with us rather than just ticking off tasks. The Antigua team took a close look at how we actually work, then set up a lead-generation automation that brings us noticeably more qualified inquiries than before, plus internal processes that genuinely give me time back. Realistically, I count on at least one day a week that I can put back into creative work.
Foto von Sebastian Herbrich
Sebastian Herbrich
Founder & Content Creator, Get2Productions
As a family business juggling check-ins, inquiries, and everyday work, there's little time left for the routine tasks in the background. Sebastian and Esra set up an AI-assisted solution for me that prepares response drafts in German and English and handles review-request reminders, all behind the scenes. I save several hours per week and stay personally close to my guests.
Foto von Jerney Samide
Jerney Samide
Owner & Host, Schee Apartments Nördlingen

In the room where it happens

We don't just follow the tech and AI ecosystem, we actively help shape it. From Google I/O to FlutterCon: we speak, organize, and contribute.

Google Gemini API Sprints
2026

Google Gemini API Sprints

Google, Berlin

Building AI-powered prototypes with Gemini during Google's invite-only sprint program for startups and developers.

Google Cloud Builders Day
2026

Google Cloud Builders Day

Google, Berlin

Esra took the Google stage to present Flutter's role in the cloud-native ecosystem, alongside Google's developer relations team.

Google I/O 2025
2025

Google I/O 2025

Mountain View, CA

On-site for Flutter × AI announcements firsthand. Material 3 Expressive, Gemini integration, and insights from sessions with the Flutter team.

Know in 30 minutes if we're a fit

Not a sales call. We listen to you. You walk us through your project, whether team augmentation, full project ownership, or AI automation. We discuss what we can realistically achieve together.

or write directly

We usually get back to you within one business day.