Web Application Development — Custom Software from Helsinki
Custom web applications, SaaS products, dashboards and internal tools built with TypeScript, React and Node.js. Senior full-stack development with production-ready delivery — 70 €/h + VAT.
Start a projectWhat we build
Custom web applications
Full-stack web applications built with TypeScript, React and Next.js on the frontend, Node.js and PostgreSQL on the backend. Scalable architecture designed for production.
SaaS product development
End-to-end SaaS builds: multi-tenancy, subscription billing (Stripe), authentication, role-based access control, and admin dashboards.
Dashboards, portals and internal tools
Admin panels, data visualisation dashboards, customer portals and internal workflow tools. Clean, fast interfaces that non-technical teams can actually use.
API design and backend development
RESTful and tRPC APIs, database schema design, caching with Redis, background job processing, and cloud deployment on Vercel and AWS.
Who it's for
- Startups building an MVP or SaaS product and needing a senior developer to own delivery
- Companies replacing spreadsheets or manual processes with purpose-built software
- Businesses adding customer-facing features or self-service portals to their product
- Teams needing senior capacity on a running product without a full-time hire
- Engineering leads who need an experienced contractor to unblock a delivery backlog
Common questions
Can you build a complete SaaS product from scratch?
Yes. We handle the full scope: architecture design, database modelling, API development, frontend, authentication, billing integration and production deployment. We work across the full stack and take full ownership of what we ship.
What database technologies do you use?
PostgreSQL is our default for relational data. We use Redis for caching and queuing, Supabase for managed Postgres with built-in auth, and evaluate the right database for each project's specific access patterns.
How do you handle authentication?
We implement auth using proven libraries (NextAuth, Clerk, Auth.js) or custom JWT solutions depending on requirements. Multi-tenant SaaS setups, SSO, and role-based access control are all in scope.
Do you work on existing codebases or only greenfield?
Both. We frequently take on engagements with existing codebases — adding features, improving architecture, fixing performance issues, or bringing a codebase up to production standard before a major launch.
Ready to build your web application?
Describe what you need built. We'll confirm approach, scope and timeline within one business day. Senior development from Helsinki — 70 €/h + VAT.
Start a project