Backend & API Development

High-Performance Backend & API Development Link to heading

We develop complex, high-performance, and scalable backend APIs and services, plus supporting components such as CLI tools, data processing utilities, and integrations.

We develop fast without sacrificing quality: We deliver tangible results in short cycles, with high performance from day one.

When the project requires it, we can take on full‑stack work (backend + web frontend), as long as the core challenges live in the business logic, data, and backend performance. We typically don’t take on projects where the main challenge is purely visual or marketing; we focus on products and systems where the backend is critical.

What We Build Link to heading

Stand-alone Applications & CLI Tools

  • Command-line tools for DevOps and automation
  • Desktop applications for data processing
  • High-performance utilities in Go, Rust, or C++
  • Migrations and ETL pipelines

REST & gRPC APIs

  • APIs for mobile and web applications
  • Microservices with modern architecture
  • gRPC for high-performance service-to-service communication
  • GraphQL when the use case requires it

High-Performance Backends

  • Systems handling millions of requests/day
  • Real-time data processing
  • Trading systems, fintech, betting
  • Latency optimization (sub-100ms)

SaaS Applications

  • Full web applications with Ruby on Rails or Go
  • Multi-tenancy and integrated billing
  • Scalable infrastructure on Kubernetes
  • CI/CD and automated deployment

Integrations & Third-party APIs

  • Integration with external services (Stripe, Twilio, etc.)
  • Webhooks and event-driven architectures
  • Robust rate limiting and retry logic

Our Strengths Link to heading

Languages and use cases

  • C++ Modern C++ (17/20/23): Our primary choice for VERY high-performance microservices (trading, fintech, critical systems)
  • Go Go: We master Go microservices and high-performance web servers
  • Rust Rust: We master Rust microservices when maximum safety with performance is required
  • Ruby on Rails Ruby on Rails: For web servers and rapid SaaS application development

Key technologies: C++ Go Rust Ruby on Rails

Modern architecture

  • Microservices when it makes sense, well-designed monoliths when sufficient
  • Event-driven architecture with message queues (RabbitMQ, Kafka)
  • CQRS and Event Sourcing for specific use cases
  • Clean Architecture and Domain-Driven Design

Infrastructure

  • Kubernetes for deployment and orchestration
  • Docker for containerization
  • Terraform for Infrastructure as Code
  • CI/CD with GitHub Actions, GitLab CI, or CircleCI

Observability

  • Structured logging with ELK stack
  • Metrics with Prometheus and Grafana
  • Distributed tracing with Jaeger or OpenTelemetry
  • Intelligent alerting, not noisy

Development Process Link to heading

1. Discovery and Planning

  • We understand your requirements and constraints
  • We define architecture and tech stack
  • We estimate effort and timeline

2. Iterative Development

  • 1-2 week sprints
  • Regular demos and continuous feedback
  • Automated testing from day 1
  • Code review of all code

3. Deploy and Monitoring

  • Deploy to production early
  • Monitoring and alerting configured
  • Complete technical documentation
  • Knowledge transfer to the team

Project Examples Link to heading

Trading API for fintech

  • Stack: C++, PostgreSQL, Redis, Kubernetes
  • Timeline: 3 weeks development + 1 week testing
  • Latency: < 50ms p99
  • Throughput: 10k requests/second
  • 99.99% uptime

Backend for mobile delivery app

  • Stack: Go, PostgreSQL, Redis
  • Timeline: 3 weeks (complete MVP)
  • Features: Auth, orders, payments, real-time tracking
  • 100k active users

Enterprise management SaaS

  • Domain: full‑stack product (backend + simple web frontend) where the main challenge was backend business rules, permissions, billing, and data consistency
  • Stack: Ruby on Rails, PostgreSQL, Sidekiq
  • Timeline: 5 weeks (complete MVP with billing)
  • Multi-tenancy with complete isolation
  • Billing integrated with Stripe
  • 5k active users

Real-time data processing system

  • Stack: C++, Kafka, ClickHouse
  • Timeline: 4 weeks
  • Processing: 1M events/minute
  • Queries: < 100ms on TB datasets
  • Auto-scaling based on load

Guarantees Link to heading

  • Quality code: Automated tests, code review, CI/CD
  • Documentation: Technical and user, always up to date
  • Performance: We measure and optimize from day 1
  • Security: Security best practices, periodic audits
  • Maintainability: Clean code, clear architecture, easy to extend

How do we start? Link to heading

  1. Kick-off call: We discuss your project and requirements
  2. Technical proposal: Architecture design + tech stack + estimate
  3. Development: Iterative, with regular demos and feedback
  4. Launch: Deploy + monitoring + documentation
  5. Handoff: Complete knowledge transfer

Contact us to discuss your project.