Sonnet Code
Service · Core

Work with senior Back-end Development engineers.

Backends that perform under load, stay safe under audit, and don't rot as features pile on.

We write backends in the language the problem deserves — Go for throughput, Python for data, Node for rapid iteration, Rust for hot paths. The language matters less than the architecture: bounded contexts, testable integrations, and observability from day one.

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Back-end Development in production
Why Sonnet Code for Back-end Development

The bar we hold ourselves to.

Architecture over fashion

We don't chase the latest framework. We pick the boring option that's still running in three years, and we explain why.

Observability is not optional

Tracing, metrics, and structured logs are part of every service we ship. Debugging in prod should not be archaeology.

Security by default

Auth boundaries, input validation, and secret management are baseline — not upgrades you buy later.

What we build with Back-end Development

Back-end Development work, shipped.

API services

REST, GraphQL, and gRPC services with OpenAPI contracts, proper auth, rate limiting, and idempotency.

Event-driven systems

Kafka, SQS, and Pub/Sub-backed async architectures with exactly-once semantics where it matters.

Data-intensive services

PostgreSQL, ClickHouse, and Redis-backed systems handling real-time analytics and transactional workloads.

Legacy modernization

Strangler-fig migrations from monoliths to services, without the big-bang rewrites that always fail.

Stack

Inside our Back-end Development practice.

GoPythonNode.jsRustJavaPostgreSQLRedisKafkagRPCOpenAPIOpenTelemetryDocker

Ready to get started with Back-end Development? Fifteen minutes is all it takes.