Engineering excellence.
Built to last at scale.
Great products are built by great engineering. Our technical philosophy emphasizes reliability, performance, and maintainability at every level of the stack.
How we build
Principles that guide
every commit.
Reliability, performance, and maintainability aren't slogans—they're engineering requirements we hold ourselves to on every layer of the stack.
Code quality is non-negotiable
Clean, readable, well-tested code isn't optional—it's how we keep email infrastructure maintainable at scale.
- High test coverage across services
- Mandatory code reviews for all changes
- Automated linting and formatting
Performance is a feature
Every millisecond matters when you're processing millions of emails. We optimize relentlessly and measure everything.
- Sub-100ms API response times
- Horizontal scaling by design
- Continuous performance monitoring
Built for 99.9% uptime
Email infrastructure can't go down. We architect for resilience with redundancy and automatic failover at every layer.
- Multi-region deployment
- Automatic failover mechanisms
- 24/7 monitoring and alerting
The stack
Technologies chosen
for the job.
We pick tools for their ability to scale, their community support, and how well they align with these engineering values.
Modern languages
TypeScript for type safety, Go for performance-critical services, and Rust where every microsecond counts.
Battle-tested databases
PostgreSQL for relational data and analytics, Redis for caching—each chosen for its strengths.
Cloud-native architecture
Kubernetes for orchestration, Docker for containerization, and Terraform for infrastructure as code.
Observability first
Prometheus for metrics, Grafana for visualization, and distributed tracing across every service.
Security by default
Zero-trust networking, encrypted everything, and automated security scanning in CI/CD.
Developer experience
Modern tooling, fast feedback loops, and workflows that make contributing to Reloop straightforward.
Help us build the future
of email infrastructure.
We're looking for engineers who share our passion for reliability, performance, and open source. Explore our codebase or get in touch.