Lion Den is a lean software studio working with founders and early-stage teams — from idea to production, on iOS, Android, and web.
We cover the full product surface — mobile, web, infrastructure, and integrations — so you don't have to stitch together multiple vendors.
Native and cross-platform iOS and Android development with Flutter. From MVP to production-ready, built to scale.
Full-stack web apps on Next.js with scalable AWS infrastructure. Fast, SEO-ready, and built for real user loads.
Stripe, third-party APIs, identity verification with Didit, and workflow automation via n8n. Wired together cleanly.
Architecture decisions, tech stack scoping, and MVP planning for founders who need a technical co-pilot before they hire.
We also build for ourselves. Three products of our own — because we'd rather ship than speculate.
A social-first marketplace for pet sitting and dog walking, available in 43 countries. Pet owners know sitters before they book — with 0% fees, secure payments, and cashback on every booking.
Visit petme.socialMembers-only platform for social events and peer connections, built for founders and builders in Madrid. Website, mobile app, and event curation — all in one place.
A marketplace connecting people serious about finding a long-term relationship with vetted advisors. Personalised, one-on-one guidance — not generic advice.
Visit thendgame.comWe keep the team lean and the process direct. You talk to the people building your product.
We map the full product before writing a line of code. Requirements, architecture, edge cases — upfront, not discovered mid-build.
Small focused team, short cycles. You see working software early and often — not a big reveal at the end of a long sprint.
Documented, tested, and yours to own. We hand over code you can maintain, extend, or pass to another team without drama.
Lion Den is a small software studio founded to build products the right way — lean, deliberate, and technically solid. We work with founders who know what they want to build but need a team that can actually ship it.
Based in Alicante, Spain. We work with clients across Europe and the US.
We're selective — if it's a good fit, we move fast.
hello@lionden.eu