Fast, secure, and scalable backend services using Rust and Java by Dennis NjugunaFast, secure, and scalable backend services using Rust and Java by Dennis Njuguna

Fast, secure, and scalable backend services using Rust and Java

Dennis Njuguna

Starting at

/hr

About this service

Summary

I offer custom backend development services using Rust and Java, tailored for performance, reliability, and scalability. Whether you're building a new product or need to upgrade your existing backend, I specialize in designing systems that are secure, testable, and built to last. What sets me apart is my expertise in event-sourced architectures, temporal systems, and clean, production-ready code.

Deliverables

🧩 Backend Architecture Design

A modular, scalable, and maintainable system blueprint tailored to your product’s goals—includes documentation, database schema design, and service layout using best practices.

🔗 REST or GraphQL API Development

Production-grade APIs built with Actix-Web, Salvo (Rust) or Spring Boot (Java), including route handlers, authentication, validation, and clean documentation (e.g., OpenAPI/Swagger).

🗂 Database Integration & Migrations

Schema design, migration scripts, and optimized queries using PostgreSQL, SQLite, or MySQL—powered by tools like Diesel (Rust) or JPA/Hibernate (Java).

📁 File Upload & Storage Service

Secure multipart file upload backend with metadata indexing, file streaming, and pluggable storage support (local, S3, etc.), written in Rust or Java.

🧪 Testing & Quality Assurance

Unit tests, integration tests, and performance benchmarks to ensure reliability, security, and stability under load—using cargo test, JUnit, etc.

🏗 Dockerized Deployment-Ready Codebase

Containerized backend service setup with Docker, including dev/test/staging environments and basic CI/CD configuration for smooth deployment.

⏱ Temporal or Event-Sourced Backend Modules

Custom event-sourced systems (like temporal graph databases or audit trails) using immutable logs and time-aware querying capabilities—great for legal, compliance, or intelligence use cases.

FAQ

Q: Can you work with my frontend or existing team?

Yes! I can integrate with your existing frontend or collaborate with other developers via GitHub, Slack, Notion, or your preferred tools.

Q: What technologies do you use?

Rust (Actix-Web, Salvo, Diesel), Java (Spring Boot), MongoDB, Redis, Docker, and more—depending on your needs.

Q: Do you offer long-term support or maintenance?

Absolutely. I offer retainers or milestone-based support for evolving systems.

Q: Can you help with deployment too?

Yes. I can containerize your service and assist with deploying to cloud or on-prem environments (Docker, basic CI/CD, or Kubernetes setups).

FAQs

Q: Can you work with my frontend or existing team?
Yes! I can integrate with your existing frontend or collaborate with other developers via GitHub, Slack, Notion, or your preferred tools.
Q: What technologies do you use?
Rust (Actix-Web, Salvo, Diesel), Java (Spring Boot), MongoDB, Redis, Docker, and more—depending on your needs.
Q: Do you offer long-term support or maintenance?
Absolutely. I offer retainers or milestone-based support for evolving systems.
Q: Can you help with deployment too?
Yes. I can containerize your service and assist with deploying to cloud or on-prem environments (Docker, basic CI/CD, or Kubernetes setups).

What's included

🧩 Backend Architecture Design
A modular, scalable, and maintainable system blueprint tailored to your product’s goals—includes documentation, database schema design, and service layout using best practices.
🔗 REST or GraphQL API Development
Production-grade APIs built with Actix-Web, Salvo (Rust) or Spring Boot (Java), including route handlers, authentication, validation, and clean documentation (e.g., OpenAPI/Swagger).
🗂 Database Integration & Migrations
Schema design, migration scripts, and optimized queries using PostgreSQL, SQLite, or MySQL—powered by tools like Diesel (Rust) or JPA/Hibernate (Java).
📁 File Upload & Storage Service
Secure multipart file upload backend with metadata indexing, file streaming, and pluggable storage support (local, S3, etc.), written in Rust or Java.
🧪 Testing & Quality Assurance
Unit tests, integration tests, and performance benchmarks to ensure reliability, security, and stability under load—using cargo test, JUnit, etc.
🏗 Dockerized Deployment-Ready Codebase
Containerized backend service setup with Docker, including dev/test/staging environments and basic CI/CD configuration for smooth deployment.
⏱ Temporal or Event-Sourced Backend Modules
Custom event-sourced systems (like temporal graph databases or audit trails) using immutable logs and time-aware querying capabilities—great for legal, compliance, or intelligence use cases.

Skills and tools

Backend Engineer

Web Developer

Java

MongoDB

Redis

Rust

Industries

Computer Software