Software development
Web apps and APIs with TypeScript, React, Next.js and Node.js.
- From MVP to scaling product
- Clean, testable codebase
- Hands-on team reinforcement
region / rotenburg (wümme)
Software developer in Rotenburg (Wümme) – software and AI for mid-sized companies
Digitalisation doesn't require a big-city agency. I'm Kjell Otto, a freelance software developer and architect, and I support companies in Rotenburg (Wümme), the surrounding district and the Elbe-Weser region – in person, without fuss, and with experience from many industries.
- Rotenburg (Wümme)
- Zeven
- Sottrum
- Scheeßel
- Visselhövede
- Bremervörde
on-site
On-site in Rotenburg (Wümme) – then remote
Within the Rotenburg (Wümme) district I can be with you quickly. We start with a personal meeting and an on-site onboarding in which I get to know your processes, your systems and the people behind them. After that I work mostly remotely and am happy to come back for alignment, training or workshops – as much presence as needed, as efficient as possible.
Industries in the region
- Mid-sized manufacturing and engineering
- Food, agriculture and agricultural trade
- Healthcare and social services
- Trades, retail and services
- Municipalities and public institutions
Digitalisation in the Elbe-Weser region
The companies between the Elbe and the Weser are diverse: manufacturers and suppliers, food producers, agriculture and agricultural trade, care and healthcare providers, trades and retail. Many share one thing: they know exactly where time is lost in daily work – but there’s often nobody to turn that into a fitting, reliable software solution.
That’s where I come in. I bring experience from projects for large companies but work pragmatically and as an equal partner. No oversized solutions, but software that fits your size, your budget and your processes.
What I do for companies in the region
Custom software and web applications: customer portals, internal tools, order processing – tailored to your processes rather than the other way round.
Integrations and automation: syncing data automatically between ERP, accounting, online shop and specialist applications instead of typing it in several times.
AI for mid-sized companies: automatically evaluating documents and emails, making knowledge from manuals and guidelines accessible through an assistant, or preparing quotes faster. I’ll assess honestly with you where AI really helps – and where it doesn’t.
Modernising existing systems: stabilising grown software, moving it to the cloud and renewing it step by step.
Personal and long-term
I like to work long-term with companies from the region – as an external developer, a sparring partner for technical decisions or support for your internal IT team. A first conversation is free and non-binding; on-site at your place if you like.
How we get started
It starts with a conversation, ideally at your premises: where are things stuck today, which processes cost the most time, which systems are in use? From that I derive two or three concrete starting points and give you an honest assessment of which one delivers the most value for a manageable effort. If useful, we begin with a small, clearly scoped fixed-price package – so you know up front what you’ll get and can decide calmly whether and how to continue.
Being close to Hamburg and Bremen helps: I know what larger companies need and bring over what makes sense for mid-sized businesses in the region – without the corporate overhead.
services
Services in Rotenburg (Wümme)
Software architecture
Sound cloud architectures and a path away from the legacy monolith.
- Architecture reviews & ADRs
- GCP, AWS, Kubernetes, IaC
- Modernising .NET, Java and Go systems
AI integration
Use AI where it creates measurable value – inside your existing software.
- LLM integration (Claude, OpenAI)
- RAG over your own documents & data
- Agents, automation, evaluation
faq
Frequently asked questions
Is a software developer worthwhile for smaller companies too?
Yes. Small and mid-sized companies in particular benefit when recurring tasks are automated or scattered data is brought together. We deliberately start small, with a clear benefit, and build from there.
Can you also extend existing software?
Yes. Many companies work with grown custom software. I analyse what's there, stabilise what matters and modernise step by step – without putting ongoing operations at risk.
Do you come to meetings in Zeven, Scheeßel or Bremervörde?
Yes, I'm available for on-site meetings throughout the Rotenburg (Wümme) district and the Elbe-Weser region.
contact
Let's talk about your project.
Tell me briefly what it's about – I'll get back to you within 1–2 business days.