Backend & API Engineering
Secure and scalable backend systems built to handle complex business logic, data integrations, and growing demands.
We design and build mission-critical backend systems, high-throughput microservices, and secure RESTful & GraphQL APIs. Engineered for maximum concurrency, sub-50ms latency, and automated scalability, our server architectures protect your data and power your frontend applications reliably.
< 50ms
Average API Latency
10k+
Concurrent Requests/Sec
Zero
Security Vulnerabilities
100%
Automated Test Coverage
What We Build & Deliver
Comprehensive end-to-end technical capabilities tailored to your exact industry requirements.
RESTful & GraphQL API Architecture
Clean API contracts with comprehensive OpenAPI documentation, rate limiting, request validation, and semantic versioning.
- REST & GraphQL endpoints
- OpenAPI / Swagger documentation
- Rate-limiting & throttling rules
- Automated input validation
Database Architecture & Optimization
Relational and NoSQL database modeling, read replicas, connection pooling, and query tuning for ultra-fast performance at scale.
- PostgreSQL / MySQL schema design
- Redis caching layer
- Database migration scripts
- Indexing & query optimization
Microservices & Message Queues
Decoupled asynchronous architectures using RabbitMQ, Kafka, and BullMQ for reliable event-driven background processing.
- Event-driven worker services
- Job queues & scheduled cron tasks
- Distributed tracing & logging
- Dead letter queue resilience
Authentication & Security Hardening
Enterprise security with JWT, OAuth2, multi-factor authentication (MFA), role-based access control, and encrypted data at rest.
- OAuth2 & JWT authentication
- Role & permission management
- Data encryption (AES-256)
- CORS, CSRF & XSS protection
Technology Stack
We leverage a modern, battle-tested technology stack to deliver high-performance, secure, and scalable solutions.
8 technologies in this service
- Node.jsRuntime
- NestJSFramework
- Python / DjangoFramework
- PostgreSQLDatabase
- RedisCache & Queue
- RabbitMQ / KafkaMessage Broker
- DockerContainer
- AWSServerless
Our Execution
Blueprint
A structured agile delivery framework that guarantees transparent milestones, rapid feedback, and absolutely zero surprises.
- 01
Data Modeling & API Contract
Defining database schemas, entity relationships, and OpenAPI interface contracts.
- 02
Core Logic & Service Implementation
Writing business rules, domain entities, database queries, and unit test suites.
- 03
Security, Caching & Performance Tuning
Implementing Redis cache, load balancing, JWT authentication, and rate limiting.
- 04
Load Testing & Containerized Deploy
Simulating high concurrent traffic loads with k6 and deploying to cloud infrastructure.
What you receive upon project completion
- Clean, Documented Backend Codebase & Microservices
- Automated Database Migrations & Seed Data
- Interactive Swagger / Postman API Documentation
- Comprehensive Unit & Integration Test Suites
- Docker Compose & Kubernetes Deployment Manifests
Get a free estimate for Backend & API Engineering
Share a few details about your project and our team will come back with a scope, timeline and cost estimate. No commitment required.
- Reply within 24 hours on business days
- NDA signed before we start; you own all code and IP
- Calls scheduled in your time zone
Frequently Asked Questions
What backend technologies does Devialet use?
We build backend systems with Node.js (NestJS, Express), Python (Django, FastAPI), PHP (Laravel) and .NET, backed by PostgreSQL, MySQL, MongoDB and Redis, and deployed with Docker and Kubernetes on AWS or your preferred cloud.
Do you build REST or GraphQL APIs?
Both. We design REST and GraphQL APIs with versioning, authentication, rate limiting and OpenAPI or Swagger documentation so your web, mobile and partner integrations share one reliable contract.
Can you integrate with our existing systems and third-party services?
Yes. We integrate payment gateways, CRMs, ERPs, messaging platforms, AI models and legacy databases through secure APIs, webhooks and message queues with retry and monitoring built in.
How do you secure backend systems and APIs?
We implement OAuth 2.0, JWT and SSO authentication, role-based access control, input validation, encryption in transit and at rest, audit logging and OWASP-aligned hardening, plus automated security and load testing before release.
How do you ensure the backend scales as traffic grows?
We use stateless services, caching with Redis, database indexing and read replicas, background job queues and horizontal scaling with containers, and we load test each release to validate latency and throughput targets.
What do we receive at the end of a backend project?
A clean, documented codebase, automated database migrations, interactive API documentation, unit and integration test suites, and Docker Compose or Kubernetes deployment manifests with full IP ownership.
Still have questions? Talk to our team
Other Capabilities
Custom Software Development
Purpose-built digital products designed around your business processes, users, and long-term growth.
Web Development
Build fast, secure, scalable, and engaging websites and web applications designed around your business goals. From corporate websites and e-commerce platforms to SaaS products and enterprise applications, we combine modern technologies, thoughtful design, and robust engineering to deliver web solutions built for growth.
Mobile App Development
Intuitive and reliable mobile applications that connect businesses with their customers wherever they are.
