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Custom software · Hannover, Germany

You have the problem.
I build the solution.

You can tell something ought to work better — but not yet how. I look at how you work today and develop a solution that fits your business. What exactly that is, we find out together.

Describe your problem → How I work

The first call takes 30 minutes — free and without obligation.

Heiko Schönemann Code Code
Sound familiar?

Something isn’t right. It’s just hard to say what.

Most businesses have got used to their detours — they only stand out when someone from outside asks why things are done that way. Six things I hear again and again:

  • Double work

    The same data lives in two systems — and someone types it from one into the other.

  • Knowledge silo

    There is this one Excel sheet. It works. But only one colleague really understands it.

  • Time sink

    Every month a whole day goes into the report — with figures that are already in the system.

  • Manual work

    Quote, invoice, report: every time, open the template, hunt for the text blocks, adjust.

  • Isolated tools

    A separate program with its own subscription for every task — and none of them talk to each other.

  • Dependency

    When that colleague is on holiday, the work waits. Because only they know how it goes.

You don’t need to know what the solution looks like.

You only need to know what bothers you. The rest is my part: I look at how you work today — on site or by video call — and turn it into a proposal. Nothing gets built until it convinces you.

How I work → Book a first call
Software & solutions

My products and solutions

Software that only you have — and ready-made products you can use straight away. Each has its own page with all the details; most of these pages are in German for now.

For your business

Heiko Schönemann sketching the MVC pattern on a whiteboard
Built to measure

Custom Software

When there is no ready-made program for the way you work. I look at how you work today and build exactly what is missing — nothing more.

  • Understand first, then build
  • €90 per hour plus VAT
  • You own the source code
  • Keeps running without me
Learn more (in German) →
Development workstation with several monitors
AI for small and mid-sized businesses

Creative AI

Your expert who knows your company: your documents, your tone, your template. On request it also looks into your mailbox and calendar — read-only, never writing.

  • Your own AI experts, built from your documents
  • Ask your own mailbox and calendar
  • Knowledge base with AI search
  • Export to your Word template
Learn more (in German) →
Insta Poster: creating a post with a preview of the carousel slides
Instagram posts

Insta Poster

One topic becomes a finished Instagram post — slides, video and caption in your own brand. If you look after several brands, they stay separate in the same program.

  • Write text directly on the slide
  • Carousel, reel and caption at once
  • Design your own layouts in the editor
  • Several clients, each with its own branding
Learn more (in German) →
Klaro: task board with the columns Requests, In progress and Done
Tasks & projects

Klaro

Tasks, responsibilities and deadlines for clubs, local councils and small businesses — on your own web space, no subscription. Made for volunteers, not for specialists.

  • Deadlines that calculate themselves
  • An email becomes a task
  • Annual report as a draft
  • Self-hosted, no subscription
Learn more (in German) →
Skilo: logbook entry with time, position and sail setting
Sailing logbook

Skilo

The logbook that keeps writing without a connection. One tap, one entry — with time and position. On your own web space, no account and no app store.

  • Works offline, syncs later
  • Mileage certificate and crew list
  • Check-in and check-out report
  • Free on your own web space
Learn more (in German) →

And three for private life

Not every tool is made for a business. My partner is celebrating a big birthday next year with lots of guests — I looked for something that keeps replies, tasks and photos in one place, and found nothing that fit. So I built it. CrewGo solves the same kind of task for group trips, Knipsmit collects the photos of the evening. You can try all of them without signing up — and exactly this approach is what I offer above: first the problem, then the solution.

Mitfeiern: planning a party with replies, tasks and a shared photo album
Parties & photo album

Mitfeiern

For private parties: replies, tasks, who-brings-what and car sharing in one place — and during the party, every photo lands in one private album.

  • Guests don’t need an app
  • All photos in one album
  • Who brings what, tasks, car sharing
  • Live photo wall for the TV
Try it without signing up → Learn more (in German) →
CrewGo: group trip with room allocation, travel and a shared photo album
Time together

CrewGo

For group trips: ski trip, holiday, school trip or hut tour. Travel, rooms, meeting points, packing list and costs in one place — plus weather and official warnings at the destination and every photo in one private album.

  • The crew doesn’t need an app
  • Weather and official warnings at the destination
  • Rooms, travel and meeting points
  • All photos in one album
Try it without signing up → Learn more (in German) →
Knipsmit: party guests share their photos in one album via QR code
Your guests’ photos

Knipsmit

At the end of the evening everyone has a few nice pictures — and nobody has anyone else’s. Knipsmit collects them in one place: show the QR code, type a name, take pictures. For birthdays, weddings, christenings and barbecues — no app, no account.

  • Guests need no app and no account
  • Taking part is always free
  • Live photo wall on the TV
  • Download everything, guests too
Try it without signing up → Learn more (in German) →

And one for everyone

There are plenty of official figures, just scattered across agencies and tables. stats brings German official statistics into one place, makes them comparable and puts them in context — open to everyone.

stats: official statistics with district comparison and charts
Open data, made clear

stats

Crime, traffic, electricity, inflation, welfare and all 400 German districts at a glance — official statistics compared fairly and explained clearly. Free, no sign-up, with an open data API. The app itself is in German.

  • All 400 districts compared
  • Fairly converted per inhabitant
  • Updated daily from official sources
  • Free data API
Try it without signing up → Learn more (in German) →
What I offer

My services

From analysis to delivery. I work for small and mid-sized businesses in the Hannover region — and anywhere else where we can work together by video.

Heiko Schönemann discussing code with a developer on a large screen
Working on the code together — architecture is decided at the screen, not in the slide deck.
⚙️

Full-stack & backend development

Complete software solutions from concept to delivery. Every part of the system working together seamlessly.

🏗️

Systems architecture

Connecting complex systems intelligently. Creative solutions that meet needs nobody had spelled out yet — and add real value.

🤖

Artificial intelligence

Tailor-made AI solutions that make your staff more effective and give you a competitive edge.

🔗

Processes & interfaces

Analysing workflows, connecting systems, automating recurring steps. Understood first, then built.

👥

Team lead & lead developer

Leading teams, steering development and setting the direction. Finishing projects on time.

🎓

Training & apprenticeships

For more than 20 years I have been training young people in IT. Hands-on and easy to follow.

How I work

How I work as a systems architect

A structured process for efficient solutions — and at every step it is clear why something is built the way it is.

Needs analysis

I analyse your business needs and add my own expertise.

Process modelling

With BPMN I show your processes simply and clearly.

Architecture design

Interfaces, AI or custom code — I design the architecture that fits.

Delivery & support

From implementation to go-live and beyond.

Heiko Schönemann sketching a request–server flow on a touchscreen
From 25 years of practice

What I have worked on

My experience comes from permanent roles as a systems architect and lead developer in banking — large, grown system landscapes where security and traceability are not optional. Three examples:

Systems architect · Banking

Keeping a lending trading system up to date

Task
The trading system had to be current at all times — with the calculations as well as with the portfolio data from the leading system. Both change throughout the day.
Solution
During the day, changes go out as soon as they occur. The nightly run checks the whole portfolio — but even there, only what has actually changed is delivered.

The easy way would have been to push the complete portfolio across every night. That would have put needless load on the trading system — and during the day people would have worked with last night’s data. Reliably detecting what has really changed takes more effort to build: it keeps the data current and the target system free.

Lead developer · IT provider of the German savings banks group

Digital signatures for many applications

Task
Several applications needed digital signatures — each with its own requirements for workflow and integration.
Solution
Instead of letting every application build its own solution, I designed one shared component that each application could integrate as it needed.

Built properly once instead of halfway five times. For a security topic that is not a matter of convenience: there is exactly one place that is reviewed, maintained and kept up to date.

Ongoing

Setting the framework, reviewing code

Task
Software is maintained for longer than it is built. Whatever is thrown together quickly today, someone pays back in three years.
Solution
I set the technical framework and carry out code reviews — not as control, but so that decisions are reasoned and stay traceable.

You can’t see maintainable code in a project on delivery day. You notice it years later, when someone has to change something — and it goes quickly.

About me

Experience meets creativity

With a background as a trained banker and more than 25 years in IT, I bring a rare combination of business and technical know-how.

My expertise covers many technologies — Java, JavaScript, PHP, HTML, XML, C, VBA and more. I have worked for many years as a full-stack developer and as a backend specialist with Spring Batch.

My office is in Laatzen near Hannover, Germany. I visit businesses in the region on site — everything else works just as well by video and screen sharing, wherever you are.

25+
years in IT
20+
years training
SME
to corporate group
AI
specialisation
Heiko Schönemann discussing a task with a colleague at a laptop
Experience & know-how

My path

From banker to software developer to systems architect. A path that connects technology and business — and that is exactly why it leads to solutions that actually work in practice.

Heiko Schönemann explaining a Spring Batch diagram on a whiteboard
For more than 20 years

Training and further education

For more than 20 years I have been training young people in IT. My hands-on approach and the ability to explain complex topics clearly have prepared many professionals for their careers.

The same goes for your staff: I don’t just explain what to do, but why. People who understand, rather than memorise, carry on working on their own.

  • Apprentices and work-study students, from the basics to the final exam
  • Team training on architecture, interfaces and AI — in house or by video
  • Clearly explained — even when it gets complicated
Make your team more effective →
Heiko taught me a lot as an apprentice. With his patient manner he explains everything so that you really understand it.
Leon SindermannWork-study student
Heiko keeps showing me new ways to solve things! I really value his professional and efficient way of working.
Leon AschemannWork-study student

Translated from German.

What clients say

References

Voices of people I work with — translated from German.

Working with Heiko is creative, innovative and great fun thanks to his solution-focused ideas. Heiko is very committed and reliable."

KK
Kathrin Kröner
Coach — Mutig Sein

Mr Schönemann regularly advises us on improving our office processes. It has saved us a lot of time."

DJ
Dirk Jöhrens
Managing director

With his solution-focused way of working, I always have a reliable person to turn to. Fast and competent."

NM
Nicole Meermann
Client
Get in touch

Contact

The first call takes about 30 minutes, costs nothing and commits you to nothing. Afterwards you will know whether your project is worth it and how it could go on.

📞
💬
✉️
📍

Address

Frieda-Nadig-Str. 12c
30880 Laatzen

🗺️

Area

On site in the Hannover region,
anywhere by video

Write to me

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