01
Domain logic & workflows
Your business model, cleanly translated into software.
Custom rules, calculations and processes that map and automate complex operations reliably.
We buildSaaS & platforms
We develop, extend and stabilize complex products -senior-ledand withownershipinstead of billable hours.
app.devbld.comlive
Revenue+12%
€0k
Users+3%
0.0k
Conversion+0.6%
0.0%
Revenue trend30d
€48.2k
0108152230
AuthPayAPI$✓
Proven in
B2B SaaSMVP developmentHigh-traffic platforms
live0+weekly visitors
0+ yearsLong-term technical partner
0+Complex integrations shipped
Trusted by product teams & founders
- LohnLab
- 10FastFingers
- beglaubigt.de
- Mental Royale
- Lohnkonzepte
- Spixler
AI makes it fast. We make it last. DEVBLD. helps founders and product teams build reliable, maintainable software for long-term growth, designed around real user needs.
Services
Make the rightnext move.
Clarify what matters. Build what lasts. Scale with confidence.
Path 1 · Product Clarity
Clarity before code.
For ideas, features and AI-built prototypes that need a clear path forward. We turn assumptions into a prioritized scope, technical direction and realistic next step.
Best for: Validated ideas, major features or AI-built prototypes with unclear scope, feasibility or effort.
Typical outcomes
- prioritised MVP or feature scope
- technical assessment of what exists
- architecture and stack recommendation
- risks, gaps and open questions
- rough effort estimate
- recommendation for a build sprint or retainer
Timeline
1-2 weeks
Format
Workshop + written recommendation
What we build
What turns aprototype intoa product.
From domain logic to real time: we build the systems that carry your SaaS long-term - designed around real users and real business processes.
02
Auth, roles & tenants
Secure access. Cleanly separated data.
Authentication, fine-grained permissions and multi-tenancy for customers, teams and organisations.
03
Billing & subscriptions
Revenue logic that fits your model.
Subscriptions, usage-based plans, payment flows and invoices - flexible from your first customer to scale.
04
APIs & integrations
Systems that work together reliably.
Robust interfaces and data flows to CRM, DATEV, payment, analytics and custom third-party systems.
05
Documents & signatures
Documents your product generates itself.
Dynamic templates, PDF generation, approvals and digital signatures - automated from your product data.
06
Performance & real time
Fast, live and ready for growing load.
Performant architectures, live data and real-time communication for heavy usage and demanding interactions.
Our stack
- Next.js
- React
- TypeScript
- Node.js
- PostgreSQL
- Supabase
- Stripe
- Vercel
- React Native
✦How we work
Fast where it helps.Deliberate where it matters.
We combine product clarity, thoughtful architecture, senior-led delivery and continuous improvement - so speed today does not become friction tomorrow.
01Clarify
Start with the decisions that matter.
We align on users, outcomes, scope and risks - so everyone knows what to build, what not to build and what success looks like.
02Architect
Design the foundation before complexity grows.
We translate product goals and business logic into architecture, data models and workflows built for the current release - and what comes next.
03Build & launch
Ship production-ready software.
Senior engineers build in small, testable increments - with security, deployment and observability included from the start.
04Evolve
Improve with real-world evidence.
After launch we use product data, user feedback and operational signals to prioritise what comes next and keep the system reliable.
30 min · no commitment · directly with a senior engineer
Selected work
Connected
Worldwide
Cologne10FastFingers
01 / 02
“My go-to partner for MVP development. 100% recommended!”
Christian
10FastFingersThe team delivers fast, thinks along and turns ideas into market-ready products in an astonishingly short time.
The studio
Senior expertise.Clear ownership.
Direct collaboration, consistent standards and clear responsibility - from the first decision to continuous development.
Nils
Founder · Product & Engineering Lead
Turns product goals into architecture, business logic and production-ready software - and owns the technical decisions from first scope to launch.
ProductArchitectureFull-stack
Lena
Founder · Operations Manager
Keeps priorities, communication and delivery aligned - so projects move forward with clarity, consistency and minimal coordination overhead.
DeliveryPlanningClient operations
Anton
Full-Stack Engineer
Ships features from the data model to the interface - tested, documented and built so the next developer can pick them up without a handover call.
Full-stackIntegrationsCode quality
Pascal
Frontend Developer
Builds interfaces that feel fast and hold up on every device - from the design handoff through motion, accessibility and the last five percent of polish.
InterfacesMotionAccessibility
Network
Need more manpower?
When your product needs more capacity, we bring in vetted freelancers from our network - design, mobile, DevOps and more. Same process, same quality bar, faster ship.
- Mobile
- Data & AI
- DevOps
- Brand & Motion
- QA
- Security
- 3D & WebGL
Product Growth Partner
Retainer packages
Fixed monthly product capacity for existing SaaS and platform products - with clear prioritisation and direct technical leadership.
Monthly
Starter
from €4,500per month
Entry
Reliable product capacity for ongoing development and stabilisation.
Included
- ✓fixed monthly capacity
- ✓clear prioritisation
- ✓ongoing feature development
- ✓bug fixes & stabilisation
- ✓monthly review
Monthlypopular
Growth
from €8,500per month
Best pace
More pace and direct technical leadership for products with steady growth.
Included
- ✓everything in Starter
- ✓expanded capacity
- ✓direct technical leadership
- ✓performance optimisation
- ✓API integrations
- ✓technical roadmap
Monthly
Scale
customper month
Enterprise
Dedicated capacity for products with high frequency and multiple workstreams.
Included
- ✓everything in Growth
- ✓dedicated team setup
- ✓multiple workstreams
- ✓refactoring & scaling
- ✓prioritised support
$git log --graph
mainnext: your-product
Ready to build your product?
Tell us briefly about your idea - we'll turn it into a clean, scaling product.