Stray Cat is a product engineering consultancy in Stockholm. We take products from idea to something real people use every day — the interface, the systems behind it, and everything it takes to keep it live.
2023—25
Tech lead
A Nordic longevity brand needed people to care about their own ageing. We built a face scan that estimates biological age from your camera in a few seconds, in five languages, with no image ever leaving the device. It became the brand's main way of winning first-time customers — and we built the store and systems around it.
2023—
Tech owner
A sales-tech company had a business and no product. We built the thing their customers log into every day: an AI coach that learns only from each company's own data, wired into the CRMs and identity systems they already use. We still own the technology.
Also
A members' platform for an organisation of 30,000 members and 100 staff — public site, mobile app, and the internal systems the team works in all day. Plus e-commerce and professional-services products.
Something real in week one. You see a working product early and often, not a document describing one.
One team owns the whole product. Interface, systems and infrastructure together, so nothing falls between briefs.
Built for everyone who uses it. Fast and accessible by default — a product only counts if people can actually use it.
Yours to keep. You end up with a product your own team can run and extend without us.
Senior product engineers inside your team, as builders or as the technical lead. We join what is already moving.
You have an idea and a market. We build the product, put it in front of users, and keep shipping after launch.
A second opinion before you commit: what to build, what to build it with, and what will hurt you in two years.
Stray Cat is a product engineering consultancy in Sundbyberg, outside Stockholm, working since 2020 with everyone from first-time founders to large enterprises.
We build the whole product — what people see, the systems behind it, and the infrastructure it runs on. That means one team to talk to, and no seams where a design handover meets a backend team meets an ops team.
We are happy to own a product outright, and equally happy to be extra hands in a team that already knows what it is doing.
Two lines about the product is enough to start. We answer within one business day, and we say so plainly when we are not the right people.
[email protected] Stray Cat AB · 559252-4465