Nyx / Nadir — AI companionship
An AI companion I designed and built: character, conversation, memory and the tools to create more — with product boundaries that make it trustworthy.
- Client
- Own product
- Year
- 2026
- Role
- Design · PO · Build
Senior Product Designer — 15+ years
I turn complexity
into clarity.
Data-dense, high-stakes products — proteomics data, energy infrastructure, clinical research platforms. Now with a hands-on focus on AI-powered and agentic systems people can actually understand and trust.
- Based
- Murcia, ES
- Remote
- Europe
- Focus
- UX · UI · AI · PO
- Status
- Open
A field of monospaced text repeating statements about this work, its brightness forming a portrait of Arne Feike.
Focus areas
- UX Design Experiences that just make sense.
- Research-led flows and structures, rooted in real user needs and validated through testing.
- UI Design Looks good, feels even better.
- Beautiful, accessible, purposeful interfaces — with clean, developer-ready handoff.
- Product Design From first idea to final pixel.
- End-to-end: connecting business and user needs into products that ship and keep evolving.
- Research & Testing Ask, test, learn. Repeat.
- Qualitative and quantitative methods to understand users and pressure-test decisions.
- Product Ownership Vision, priorities, momentum.
- Aligning design, business and tech — setting priorities and keeping the team moving.
- AI-Native Design Designing trust into automated systems.
- Making automated, agentic products transparent, controllable and trustworthy.
What others say
From internal skill reviews and peer feedback at Beyonder
- As a designer he often lays out clear forks in the road, so a decision actually gets made.Colleague · Beyonder
- Everything he has done in the MSAID project — incredible designs which made the customer spend a lot more money on the project than initially planned.Colleague · Beyonder
- Arne communicates on eye level, even in stressful situations.Colleague · Beyonder
- In refinements he asks the questions that actually clarify the requirement.Colleague · Beyonder
- He's well connected and knows who can help where.Colleague · Beyonder
- One of the most important people when it comes to improving and evolving our processes.Colleague · Beyonder
- When Arne takes on a project, I have full confidence he'll lead it through to a great result.Colleague · Beyonder
- The ability to prioritize and structure our work — Arne was able to find many great solutions to the various structural and logical problems.Colleague · Beyonder
- In the weeklies he passes on what matters from the dev team — at the right length and the right level of detail.Colleague · Beyonder
- Your way of working with customers is exemplary.Colleague · Beyonder
- His humour defuses tense calls and carries them through.Colleague · Beyonder
- His tickets were always well written — and he actively asked the team for feedback on them.Colleague · Beyonder
- He explains the features in the current sprint to stakeholders with real technical depth.Colleague · Beyonder
- In team discussions Arne makes a point of seeing and hearing every perspective. He tends to take the mediating role.Colleague · Beyonder
- I like the insights you give us into the design work, and that we can work with your inputs and thoughts on a daily basis.Colleague · Beyonder
- In countless concept sprints and user interviews he brought clarity into the requirements.Colleague · Beyonder
- You showcase work in progress as soon as possible and value every opinion.Colleague · Beyonder
- Arne is clearly regarded as the expert in UX — the person you go to and ask.Colleague · Beyonder
- You're doing this really well!Colleague · Beyonder
How I work
- 01
Understand
I dig into the domain, the data and the real user need before touching a pixel.
- 02
Define
I turn messy problems into a clear, shared direction the whole team can build on.
- 03
Design
Research-driven, collaborative, hands-on — from flows to polished, accessible UI.
- 04
Deliver
I ship with engineering and stay close to the build until it holds up in reality.
I don't just design — I own the product vision when needed.
I've had the privilege of working with innovative companies across healthcare, technology and retail.
About
For 15+ years I've worked on products where complexity isn't a style choice but the actual problem: proteomics data, energy management, research platforms, a white-label energy app utilities ship under their own brand. My job is to make dense, high-stakes systems clear enough that people trust them and act with confidence.
That's also what pulls me toward AI. With Nyx — an AI companion I designed and built as designer and product owner from zero — I work on the hard part of AI-native UX: making an automated system transparent, controllable and trustworthy.
Currently leading the design team at Beyonder, a fast-growing custom-software agency in Germany & the Netherlands. Based in sunny Murcia, Spain — working remote across European time zones. Open to travel.
Full CV — roles, reviews, education