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Connect DX, business platforms, AI, and global expansion to measurable business outcomes.

Core Services

DX Consulting

Workflows, data, AI automation, and continuous improvement

Web/System Development

Sales journeys, CRM, quotations, and post-sales operations

AI Transformation

End-to-end AI transformation from strategy to measurable outcomes

Business Platform Development

Customer, operations, data, and AI platform for 10B JPY-scale companies

Global / Market

Global Agency

Connect DX, business platforms, AI, and global expansion to measurable business outcomes.

Japan Market Entry

Booking, purchase, membership, support, and customer experience

Localization

Language, forms, CRM, and operations localization

Business Types

B2B Enterprise

Sales journeys, CRM, quotations, and post-sales operations

B2C / D2C

Booking, purchase, membership, support, and customer experience

Operations

Workflows, data, AI automation, and continuous improvement

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Cross-border

Cross-border digital and localization strategy

Market Entry

Japan Market Entry

Japan market entry and customer acquisition flow

Localization

Localization

Language, forms, CRM, and operations localization

Partnership

Japan Market Entry Partner

Cross-border digital strategy partner

View Cross-border Hub

Development

Technical capabilities in system development and infrastructure

Core Engineering

Frontend

React, Next.js, and modern web UI

Backend

API, database, and cloud infrastructure

Applications

Mobile App

iOS/Android mobile app development

Desktop App

Custom desktop software

Infrastructure & AI

DevOps / Infra

AWS, GCP, and CI/CD environment setup

AI / LLM

AI agent and RAG model integration

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BCROSSB LOGOGlobal Digital Partner

Clarify the digital bottlenecks slowing growth

Connect DX, business platforms, AI automation, and global expansion into one execution plan.

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Services

  • DX Consulting
  • Web/System Development
  • AI/LLM Integration
  • AI Transformation
  • Business Platform Development
  • Business Automation
  • Maintenance

Cross-border

  • Japan Market Entry
  • Japan Market Entry Partner
  • Localization
  • UI/UX Design
  • Global Agency

Development

  • Development
  • Frontend
  • Backend
  • Mobile App (iOS/Android)
  • Desktop App
  • DevOps/Infrastructure
  • AI/LLM

Case Studies

  • Business Automation
  • SaaS Development
  • Case Studies
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  3. Backend

Want to discuss your project?

Contact us for backend development needs.

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Backend Development

Robust Backend Development

Build stable and scalable backend systems to meet your business needs.

Node.js-Based Server Development

Build high-performance asynchronous servers using Node.js. Provide real-time data processing and high scalability.

High-Efficiency Server Development with Golang

Develop high-efficiency servers using Golang. Handle large traffic with low memory usage and fast processing speed.

Cloud Infrastructure Integration

Integrate and manage backend systems with cloud platforms like AWS, GCP, and Azure. Ensure scalability and stability.

  • JAVA
  • Spring
  • SpringBoot
  • NodeJS
  • Express
  • NestJs
  • PHP
  • Cakephp
  • Laravel
  • Golang
  • Gin
  • Python
  • Django
  • Flask
  • FastAPI
  • Ruby
  • RubyOnRails
  • Rust
  • Actix
  • JAVA
  • Spring
  • SpringBoot
  • NodeJS
  • Express
  • NestJs
  • PHP
  • Cakephp
  • Laravel
  • Golang
  • Gin
  • Python
  • Django
  • Flask
  • FastAPI
  • Ruby
  • RubyOnRails
  • Rust
  • Actix

CI/CD automation

Automate production delivery with GitHub Actions, Docker, and ArgoCD.

Monitoring & alerting design

Detect incidents instantly with Prometheus and Alertmanager.

Infrastructure as code

Manage infrastructure centrally with Terraform or Pulumi.
Backend Architecture

Service decomposition & modular design

Plan the journey from monolith to microservices based on separation of responsibilities.

Domain-driven model design

Curate entities and aggregates aligned with your use cases.

Distributed tracing & observability

Use OpenTelemetry and Grafana to monitor bottlenecks in real time.
Backend Development

Relational schema design

Well-normalised structures with indexing and performance considerations.

Asynchronous event processing

Assure data consistency with pub/sub and messaging queues.

Migration management

Version and roll back database changes with Prisma or Flyway.
Backend Mobile

Authentication & authorisation foundation

Design flexible, secure auth with JWT, OAuth, or Cognito integration.

Audit logging & access control

Meet compliance requirements with row-level security and audit trails.

Threat modelling & WAF protection

OWASP-aligned API security hardening and WAF enablement.
Backend System
  • JAVA
  • Spring
  • SpringBoot
  • NodeJS
  • Express
  • NestJs
  • PHP
  • Cakephp
  • Laravel
  • Golang
  • Gin
  • Python
  • Django
  • Flask
  • FastAPI
  • Ruby
  • RubyOnRails
  • Rust
  • Actix
  • JAVA
  • Spring
  • SpringBoot
  • NodeJS
  • Express
  • NestJs
  • PHP
  • Cakephp
  • Laravel
  • Golang
  • Gin
  • Python
  • Django
  • Flask
  • FastAPI
  • Ruby
  • RubyOnRails
  • Rust
  • Actix

BCROSSB builds the foundation of your backend

Stability × Scalability × Automation

We deliver API platforms and cloud architectures that scale with your business requirements.

Node.js-Based Server Development

Build high-performance asynchronous servers using Node.js. Provide real-time data processing and high scalability.

High-Efficiency Server Development with Golang

Develop high-efficiency servers using Golang. Handle large traffic with low memory usage and fast processing speed.

Cloud Infrastructure Integration

Integrate and manage backend systems with cloud platforms like AWS, GCP, and Azure. Ensure scalability and stability.

Security and Data Protection

Protect your data with the latest security protocols and encryption technologies. Provide security vulnerability checks and regular security updates.