Crypto Wallet & Custody Development in Madrid, Spain: overview
Banking, corporate HQs and startups. Crypto wallet & custody development is one of the engagements local companies ask us for most often.
Non-custodial, custodial and MPC wallets for consumers, exchanges and institutions. Delivered remotely from India with 3.5–4.5 hours of daily overlap with Central European working hours.
Madrid at a glance
Business districts
Most of the activity in Madrid is concentrated in Paseo de la Castellana, AZCA and Las Tablas. We regularly support companies based in these areas.
Economy and key industries
Banking, corporate HQs, telecom and startups. These sectors drive most of the software demand we see in Madrid.
Talent and universities
Complutense, Polytechnic University of Madrid and IE University. Local teams often pair with our engineers in India to add capacity and specialist skills.
Connectivity and infrastructure
Adolfo Suárez Madrid-Barajas Airport. We plan hosting, latency and integrations with this in mind.
Why Madrid companies invest in software
With banking, corporate HQs, telecom and startups, businesses in Madrid face growing pressure to digitise operations, serve customers online and integrate with partners. The most common requests we receive from Madrid are crypto wallet & custody development.
Because Madrid draws talent from Complutense, many companies here run lean in-house teams and use NNT Software to add product engineering, QA, DevOps or AI skills on demand — with delivery scheduled around CET working hours.
How we would approach a project in Madrid
- Start with the workflows that matter most to banking — usually non-custodial wallets and mpc custody.
- Meet stakeholders in Paseo de la Castellana or online for a one-to-two-week discovery workshop.
- Plan hosting and integrations around adolfo Suárez Madrid-Barajas Airport and the CET working day.
- Combine your local team — often hired from Complutense — with NNT engineers for design, development and QA.
- Release in two-week sprints and review results with your Madrid team every fortnight.
How Madrid businesses use crypto wallet & custody development
Non-custodial wallets
Seed-phrase and social-recovery wallets for iOS, Android and browser. Renewables companies in Madrid usually prioritise this first, tracking progress on asset uptime and mean time to repair.
MPC custody
Threshold signatures with no single point of key compromise. Renewables companies in Madrid usually prioritise this first, tracking progress on asset uptime and mean time to repair.
Policy engine
Whitelists, limits and multi-approver workflows for treasuries. Renewables companies in Madrid usually prioritise this first, tracking progress on asset uptime and mean time to repair.
Multi-chain support
BTC, ETH, EVM L2s, Solana, Tron and stablecoins. Renewables companies in Madrid usually prioritise this first, tracking progress on asset uptime and mean time to repair.
dApp connectivity
WalletConnect, swaps, staking and NFT views. Renewables companies in Madrid usually prioritise this first, tracking progress on asset uptime and mean time to repair.
Compliance hooks
Address screening and travel-rule integration. Renewables companies in Madrid usually prioritise this first, tracking progress on asset uptime and mean time to repair.
What crypto wallet & custody development includes for Madrid clients
Non-custodial wallets
Seed-phrase and social-recovery wallets for iOS, Android and browser.
MPC custody
Threshold signatures with no single point of key compromise.
Policy engine
Whitelists, limits and multi-approver workflows for treasuries.
Multi-chain support
BTC, ETH, EVM L2s, Solana, Tron and stablecoins.
dApp connectivity
WalletConnect, swaps, staking and NFT views.
Compliance hooks
Address screening and travel-rule integration.
Hosting for Madrid projects
For low latency in Madrid and compliance with EU GDPR and LOPDGDD, we usually recommend AWS eu-south-2 (Spain), Azure Spain Central, Google Cloud Madrid.
Localising crypto wallet & custody development for Madrid
Business in Madrid is mainly conducted in Spanish (plus Catalan and Basque regionally). We build interfaces, notifications and documents ready for those languages, and plan releases around the CET working day.
Crypto Wallet & Custody Development pricing for Madrid
Priced as per your requirements and budget, quoted in EUR or USD, after a free discovery call.
Working with a Madrid team
We work with 3.5–4.5 hours of daily overlap with Central European working hours (CET). You get a named project manager, weekly demos and written status reports.
Next steps
Ready to discuss crypto wallet & custody development in Madrid? Here is how to get started with NNT Software:
- Share your goals, users, must-have features and timeline through the contact form, email or WhatsApp.
- Join a free 30-minute discovery call with a solution architect — we sign an NDA first if you prefer.
- Receive a written proposal within 48 hours: scope, milestones, team, timeline and fixed estimate.
- Kick off with a discovery workshop and see working software in your first sprint demo.