Dedicated point of contact
From kick-off to go-live, one dedicated contact person guides you.
YOUR PARTNER FORSOFTWARE DEVELOPMENT.
Free initial consultationhafencity.dev is a software agency in Hamburg’s HafenCity. We build custom web apps, mobile apps (iOS, Android, Flutter) and AI integrations, and offer UX/UI design and hands-on workshops – in-house, for companies in Hamburg and across Germany.
100% In-House
An experienced team handles architecture, development, and quality assurance.
Partners who trust us
Capabilities
Strategy, design, and engineering for digital products
Senior leadership across strategy, design, and engineering — all in-house in Hamburg, built for measurable outcomes and durable architecture.
Product strategy
We sharpen goals, prioritise features and turn ideas into a practical product roadmap.
DiscoveryProduct strategyRoadmapAI readinessProcesses
UX/UI & design systems
We design clear interfaces that make complex workflows understandable and fast to use.
UX flowsUI designDesign systemPrototypingUser testingAccessibility
Web & app development
We build robust web and mobile apps with stable architecture, performance and quality assurance.
Mobile appsWeb appsPWAAI featuresBackendPerformanceQAPrivacy
Recent work
Current projects at a glance
Selected product visuals from references already listed on our projects page.
Digital Wellbeing / Consumer AppSperrstunde
An iOS app that reduces doomscrolling, blocks apps on schedule and supports better sleep routines.
GamesSL GmbH
A learning game that makes employment-law content understandable, interactive and easy to repeat.
SoftwareFolkz GmbH
A recruiting platform that helps HR teams create, review and publish job ads faster.
Public Sector / City AppBerlin App
A mobile city-service concept with onboarding, Berlin Card logic and clear guidance for everyday use cases.
Marketplace / Construction IndustryB2B machinery marketplace
A B2B marketplace for construction companies with trust signals, contract logic and clear request flows.
AI / SustainabilityVerda
An AI chat app for sustainable decisions with model routing, impact transparency and launch support.
BlockchainVision Crypto LLC
A crypto wallet that brings portfolio, transfers and market data for multiple chains into real-time workflows.
Social MediaFrynz
A social app for spontaneous meetups, live maps and event chats in a focused mobile experience.
Mobility / Fleet ManagementFleet management platform
An operational fleet platform for maintenance, costs, vehicle data and tasks across 20 to 500 vehicles.
PsychologyProf. Dr. Oettingen
A mobile WOOP app that turns goal setting, motivation and reflection into a clear daily routine.
Sports Gaming / Fantasy SportsTentasy
A fantasy-tennis concept with team selection, league logic and a mobile community experience.
Education / Social CommunityStudyNect
A campus app that connects students through interests, groups and communities.
Finance1Up Capital GmbH
A finance platform that gives publishers predictable pre-financing and transparent payout workflows.
EdTech / School AdministrationAkteo
A school-records platform that brings data, documents and workflows into one secure web system.
Industrial SaaS / Mechanical EngineeringMechanical-engineering service portal
A service portal that unifies machines, tickets, spare parts and live data in one workflow.
Field Service / Trades & Mid-MarketField-service platform
A field-service platform that connects dispatch, technicians, reports and knowledge data in real time.
Sportnot public
A training-camp app for groups, schedules and check-ins that simplifies on-site organization.
Fitness / HealthTechnot public
An app concept for connected gyms with check-in, live training, sleep tracking and goal management.
EventsAPIS Events
A distinctive web presence that brings event formats, brand identity and inquiry paths into one clear flow.
SEOnot public
A technical SEO tool that combines crawling, issue analysis and prioritized recommendations in one dashboard.
References
What teams say about us
Die Agentur hat uns geholfen eine Webapp zubauen. Der Austausch mit der Agentur hat sich angefühlt, als hätten wir die Entwickler eigens im Team und nicht Extern. Immer sehr zeitnahe Rückmeldung und Updates.
Maximilian Seeburg
1Up Capital GmbH
Die Agentur hat uns geholfen eine App zu entwickeln und sie zu launchen. Schnelle und unkomplizierte Kommunikation. Schnelle Anpassung von Änderungen.
Stefan Reiner
SL spielend lernen GmbH
[...] sehr guten und kreativen Vorschläge wie man die App verbessern kann, und die unkomplizierte und direkte Zusammenarbeit. Auch haben sie sich nicht gescheut, extra Arbeit in die App zu stecken, damit diese mehr den Bedürfnissen der User entsprechen kann.
Prof. Dr. Gabriele Oettingen
WOOP
hafencity.dev hat uns geholfen ein SaaS-Tool im HR Umfeld aufzubauen und haben hier ausgezeichnete Arbeit geleistet. Die Umsetzung war perfekt und während der Konzeptphase war das Team ein kompetenter Sparringspartner und Impulsgeber.
Simon Schäfer
Folkz GmbH
[...] Das Team rund um Hauke hat sich sehr zügig in unser komplexes Projekt eingearbeitet, kluge Fragen gestellt und bereits im Kennenlerngespräch wichtige Aspekte durchdacht. Man merkt, dass hier echtes Interesse und viel Erfahrung auf Kundenseite zusammenkommen. [...]
Felix Nunn
PaarBalance GmbH
Development of a mobile app and a corresponding website for our project. From design to the final app, we've seen rapid progress and are pleased with the result. We've achieved over 100k downloads and have a satisfied community.
Jana
Go 428 LLC
Partners who trust us
By the numbers
This is hafencity.dev
15+ Experts
Engineers, designers, and strategists working as one practice from our Hamburg HQ.
50+ Clients
Companies across consumer, healthcare, and B2B trust us with their digital products. Long-term partnerships are the default.
97% Recommendation rate
Repeat engagements and references our buyers actually call. Trust compounds when delivery does.
50+ Launches
Custom mobile and web products shipped from concept to maintenance — owned end-to-end by our team.
100% In-house
Strategy, design, and engineering all live at our Hamburg HQ. One team, one project lead, accountable to you from kickoff to launch.
Since 2023
Helping companies ship digital products — and growing alongside the teams we work with.
Team
The people behind hafencity.dev.
Dedicated contacts, clear accountability, and a team that brings strategy, design, and engineering together.
Hendrik-Hauke Rux
Managing Director · Project Management
Marius Gill
Managing Director · Engineering
Bastian
Head of Development
Marcos
Web & Mobile Development
Nico
Web & Mobile Development
Kinga
Web & Mobile Development
Lina
Web & Mobile Development
Max
Web & Mobile Development
FAQ
Frequently Asked Questions
Explained quickly: how we work and how we support you.
What services do you offer exactly?
Full-service from product ideation through UX/UI design, backend/frontend development, cloud hosting to maintenance & operations.
How does communication work during a project?
You have a dedicated point of contact from day one to go-live. We work in short sprints with weekly updates – transparent, direct, and without ticket chaos.
How do you calculate your prices?
Depending on the project size, we work on a fixed-price basis or a time-and-materials model. In a free initial consultation, we discuss what works best for your project.
What team size do you deploy?
That depends on the project – typically 2–5 people from engineering, design, and project management work together. The team sits in Hamburg, with one project lead from kickoff to launch.
Do I keep the source code & IP rights?
Yes, of course. Upon project completion, we transfer all rights to the source code and the developed software to you in full.
Next steps
Let's talk about your project
Book a 30-minute discovery call. We'll review your goals, surface unknowns, and outline how we would run the engagement.
Booking calendar (Cal.com)
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