Websites & customer enquiries
Clear website structures, simple ways to get in touch and customer portals tailored to your services.
Software developer · Vilsbiburg · Remote
Custom web & software development for businesses
I build and modernise websites, customer portals and custom software – helping your customers get things done more easily and making your internal processes more efficient.
Cristian CristeaYour direct point of contact Personal collaboration German & English
01 / Services
How can I help?
Web applications & workflows
Custom applications and integrations for tasks currently spread across spreadsheets, emails or separate systems.
Existing software
New features, technical modernisation and ongoing development of existing software.
02 / Selected projects
A look at my work.
Logistics · Custom software
One platform for the entire logistics process.
From order entry, day-to-day operations, documents and communication to invoices, payments and financial reports.
View project details
- The challenge
- Bring a logistics company's complex operational and financial processes together in one application – clearly structured, traceable and tailored to daily workflows.
- My contribution
- Planning, building and continuously improving the entire application – from business logic and data modelling to the user interface, integrations and deployment.
- Technology
- Ruby on Rails · PostgreSQL · Turbo / Stimulus · Sidekiq · Redis
The data shown in the screenshots has been anonymised for privacy.
Real estate · AI & WhatsApp
From a WhatsApp enquiry to a property viewing.
An AI-powered WhatsApp assistant for estate agents – answering property questions, qualifying prospective buyers and tenants, suggesting suitable alternatives and coordinating viewings.
View project details
- The challenge
- Handle property enquiries efficiently via WhatsApp, without agents having to answer every message manually and arrange each appointment individually.
- My contribution
- Planning and building the entire application – including property management, WhatsApp communication, AI-powered replies, scheduling, media sharing and a central interface for chats and customers.
- Features
- Property management · WhatsApp chats · AI replies · Appointment booking · Calendar · Recommendations · Images & videos · Live chat · Response optimisation
- Technology
- Ruby on Rails · PostgreSQL · OpenAI · Twilio · Sidekiq · Hotwire · Cloudinary
03 / Working together
From idea to implementation.
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Understand
We discuss your goals, current processes and what the solution needs to achieve.
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Plan
You receive a concrete proposal covering scope, effort and implementation.
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Build
I develop the solution in clear stages and review progress with you along the way.
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Improve
After launch, I continue to help with maintenance, improvements and new features – including for existing projects.
04 / About me
Your direct point of contact.
I'm Cristian, a software developer based in Vilsbiburg. I focus on custom web applications, internal platforms, digital business processes and AI integrations. I support projects from technical planning through to implementation and ongoing development.
Alongside development, I help businesses with technical advice, choosing suitable solutions and integrating AI into existing workflows.
Technical focus: Ruby on Rails · PostgreSQL · React · API integrations · AI integrations
05 / Frequently asked questions
Before we first talk.
I'm not sure exactly what solution I need yet.
No problem. Tell me about your goal or the process you would like to improve. Together, we'll work out the right next step.
Do you also take on existing applications?
Yes. I also take on existing projects for maintenance, bug fixes, modernisation or new features.
How are costs and scope determined?
That depends on the scope, the features you need and your existing systems. After an initial conversation, you receive a concrete proposal. For more complex projects, a short discovery phase can be helpful.
Do you only work with local businesses?
No. We can work together on site in the Vilsbiburg/Landshut area or entirely remotely – in German or English.
06 / Contact
Let's talk about your project.
A few sentences about your idea, an existing application or a process you would like to improve are enough to get started.
Or email me directly: cristian.cristea.dev@gmail.com
Your information will be used solely to handle your enquiry. For more information, please see the privacy policy.