Trusted by founders and growing teams

Custom Software Development & Process Automation

Tailored software systems engineered for real business processes, internal operations, and enterprise workflows — designed with a strong focus on reliability, security best practices, and long-term maintainable architecture.

We create custom platforms, automation systems, internal tools, data processing pipelines, and enterprise-ready applications designed to support efficiency, reduce manual processes, and enable scalable system architectures. Our engineering approach combines backend architecture, frontend development, DevOps, data engineering, and AI — resulting in complete, production-ready solutions.

What We Deliver

Business Process Automation

  • Workflow automation (CRM, ERP, finance, logistics, HR)
  • Internal tools replacing spreadsheets & manual operations
  • Employee dashboards, admin panels, management systems
  • Approval flows, role-based permissions, audit logging
  • Automated notifications, routing rules, data validation

Enterprise Systems

  • Corporate platforms with multi-role access
  • Secure identity & access management (OAuth2, MFA, SSO, Keycloak)
  • Integrations with ERP/CRM/HR systems (SAP, HubSpot EU, Pipedrive EU)
  • Reporting engines, analytics modules, API layers
  • Multi-language corporate systems for EU teams

Custom Applications

  • Java / Spring Boot + React / Next.js applications
  • Domain-driven architectures tailored to your workflows
  • Portals for partners, clients, vendors, internal teams
  • Multi-tenant architectures for SaaS platforms
  • Configurable modules, localization, feature toggles

Data & Reporting Systems

  • ETL pipelines (Kafka → PostgreSQL / ClickHouse / Oracle)
  • Real-time reporting engines (PDF/XLS/CSV generation)
  • BI integrations (Looker, Metabase, Supabase dashboards)
  • High-volume data processing and aggregation layers

API & System Integration

  • Building unified ecosystems from multiple tools
  • REST, SOAP, GraphQL, Kafka, gRPC
  • Integrations with logistics, payment providers, CRMs, marketplaces
  • Legacy system modernization and stable API wrappers
  • Secure B2B integrations for enterprise workflows

Custom AI Tools

  • On-server inference with TensorFlow/Keras/PyTorch
  • AI dashboards: image, video, text processing
  • LLM-powered assistants for operations & data handling
  • AI enrichment tools for internal workflows
  • Marketing and back-office automation

Why German Companies Choose Our Custom Software

EU-based hosting & infrastructure (Frankfurt / Amsterdam)
GDPR / DSGVO-oriented system design and implementation
Security best practices and identity management
Architecture designed with scalability and high-load scenarios in mind
Project experience in sectors such as banking, fintech, consulting, logistics, and real estate
Senior engineering team (Java, Spring Boot, React, Next.js, DevOps)
Long-term maintainability (clean code, documentation, CI/CD)

Industries We Serve

Consulting & professional services
Financial & banking (Fintech, payments, identity)
Real estate & property management
Logistics & transportation
Legal and compliance
Healthcare & wellness
Education & EdTech
B2B SaaS platforms
Enterprise operations & internal tools

Process: How We Build Custom Software

1 — Discovery & Architecture

  • Requirements analysis
  • Process mapping and workflow definition
  • Architecture design (backend, frontend, integrations)

2 — System Design & UX

  • User flows
  • Role-based access planning
  • Clean, functional UI patterns

3 — Development

  • Java/Spring Boot backend
  • React / Next.js frontend
  • Data pipelines, automation, integrations
  • Security and encryption setup

4 — Testing & Hardening

  • Load tests
  • Security audits
  • Integration testing
  • CI/CD pipelines

5 — Launch & Support

  • Documentation
  • Monitoring dashboards
  • Long-term maintenance options

EU & German Compliance

GDPR/DSGVO-oriented system design and implementation (data retention, audit logs)
EU-based servers (Frankfurt / Amsterdam)
Data handling aligned with Schrems II requirements where applicable
Encrypted storage, secure API access
Role/permission-based access to all systems
Logging, audit trails, monitoring

When You Need Custom Software

Ideal when you want:

To replace inefficient manual processes
A platform built specifically for your operations
A secure internal system designed with scalability in mind
Integration of multiple disconnected tools
Migration from outdated or legacy systems
A backend that handles complex logic or high load
A long-term scalable system (not temporary patches)
Ownership over your infrastructure and data

Tools & Technologies

Backend

Java 21, Spring Boot, Spring Cloud, PF4J, OSGi

Frontend

React, Next.js, TypeScript, Tailwind

Data

PostgreSQL, ClickHouse, Oracle, Redis

Integration

REST, SOAP, GraphQL, Kafka, gRPC

Security

OAuth2, Keycloak, CAS, JWT, MFA, SSO

AI

TensorFlow, Keras, PyTorch, LLM-based tools

Infrastructure

Docker, Kubernetes, Ubuntu Server, CI/CD Pipelines

Reporting

PDF/XLS/CSV generators, data pipelines

FAQ

Do you build internal corporate systems?

Yes — dashboards, workflow tools, approval systems, reporting engines.

Can you integrate with our ERP/CRM?

Yes — SAP, HubSpot EU, Pipedrive EU, Bitrix24 DE, HR systems, finance tools.

Do you replace spreadsheets and manual workflows?

Yes — that's one of the most common use cases.

Can you migrate our old system?

Yes — we modernize legacy apps and build API layers around them.

Do you handle high-load or enterprise-grade systems?

Yes — our team has been involved in projects for banks and large enterprise environments.

What types of custom software do you build?

Internal tools, dashboards, enterprise systems, reporting engines, CRM/ERP extensions, and custom applications for complex workflows.

Can you integrate with our existing software?

Yes — we integrate with CRMs, ERPs, accounting systems, payment providers, marketplaces, and legacy enterprise platforms.

Website development in Germany for companies operating production web platforms. We support organizations with Next.js and React development, corporate websites, and web design based on the specific technical and regulatory context of each project. All services are delivered individually and depend on system requirements and constraints.

Statements regarding performance, scalability, security, or compliance describe architectural approaches and do not constitute guarantees of specific technical, legal, or business outcomes.

Custom Software Development in Berlin | H-Studio