SaaS Rationalization LLC is an early-stage software company building technology to help organizations better understand, manage, and optimize their software environments.
Our goal is to help businesses reduce unnecessary software costs and complexity, identify overlapping or underused applications, improve visibility into software usage, and manage software-related workflows more effectively.
We are also exploring automation, secure transaction workflows, verification systems, and blockchain integrations where they provide practical value.
We are looking for a **Backend Developer with strong Rust experience and practical blockchain knowledge** to join our growing technical team.
This is primarily a backend engineering role. You will build reliable backend services, REST APIs, integrations, data-processing workflows, and core application infrastructure.
Some areas may involve blockchain functionality such as transactions, wallet integrations, smart contracts, verification workflows, and distributed systems. However, this is **not a purely Web3 or smart-contract-focused role**.
* Design and maintain backend services using **Rust**
* Build scalable REST APIs and service integrations
* Work with databases, authentication, authorization, and secure data handling
* Build asynchronous and event-driven backend workflows
* Integrate third-party APIs and external services
* Contribute to blockchain transactions, wallets, smart-contract integrations, and verification workflows
* Design maintainable and scalable backend architecture
* Write unit and integration tests
* Troubleshoot performance, application, and infrastructure issues
* Participate in code reviews and technical discussions
* Take ownership of backend features from design through production
* Strong professional experience with **Rust**
* Solid backend development experience
* Experience building REST APIs
* Good understanding of databases and data modeling
* Experience with authentication, authorization, and backend security
* Understanding of asynchronous programming and distributed systems
* Experience integrating external APIs
* Good software architecture and system design knowledge
* Familiarity with Git, testing, and debugging
* Ability to work independently in a remote environment
Practical blockchain experience is expected, but deep specialization in every Web3 technology is not required.
Relevant experience may include:
* Blockchain transactions
* Wallet integrations
* Blockchain APIs and JSON-RPC
* Smart-contract integrations
* Digital signatures, hashing, and key management
* Transaction validation
* Blockchain nodes or infrastructure
* Ethereum-compatible or other blockchain networks
* Distributed systems
Experience with any of the following is a plus:
* Python or TypeScript
* PostgreSQL
* Redis and queues
* Docker
* Cloud infrastructure
* Microservices
* SaaS or B2B products
* Workflow automation
* Solidity or smart contracts
* Monitoring and observability
* CI/CD
**Title:** Backend Developer (Rust & Blockchain Experience)
**Level:** Mid-to-Senior
**Core Skills:** Rust, Backend Development, Blockchain Integration
**Location:** Remote, Europe, North America, and South America
**Employment Type:** Contract
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