About PASDEV — Custom Software Development Agency
PASDEV is a software development agency that builds web apps, mobile apps, MVPs, custom POS systems, and internal tools for startups and growing businesses. We operate on a fixed-price model — every project starts with a clear scope and a fixed cost before any development begins.
Founded by Karl Arriba
Karl Arriba is a full-stack developer and the founder of PASDEV. Karl has shipped MVPs, custom POS systems, mobile apps, and commercial websites for clients across construction, hospitality, retail, fitness, and finance. Every client project is personally led and delivered by Karl — there are no account managers between you and the person writing the code.
See shipped work and case studies on the PASDEV portfolio.
Our Philosophy
PASDEV was built around one belief: great software shouldn't require months of uncertainty and open-ended hourly billing. Every project starts with a fixed scope, a fixed price, and a fixed delivery window. If something takes longer than planned, that's on us — not the client.
We work with modern, well-supported frameworks — Next.js, React Native, TypeScript, Supabase, Vercel — chosen because they're fast to build, easy to maintain, and straightforward for your future team to take over when you're ready to scale.
How We Work
- Scoping call: 30–60 minutes understanding your project and what success looks like
- Fixed quote: price and timeline delivered before any work starts
- Build and review: focused development sprints with progress check-ins at each milestone
- Handoff: full source code, deployed product, and documentation — everything yours, no lock-in
By the Numbers
- 5+ production projects shipped across web, mobile, POS, and internal tools
- Average MVP delivery time: 3 weeks from scope to launch
- 100% fixed-price projects — no hourly billing, no scope creep surprises
- Industries served: construction, hospitality, retail, fitness, personal finance
Tech stack: React, Next.js, TypeScript, Node.js, Supabase, PostgreSQL, Tailwind CSS, React Native, Vite, Vercel.
Work with PASDEV →