Backend Engineer
3F is an onchain protocol for leveraged exposure to tokenized real-world assets. It coordinates flash loans, bridge facilitation, and liquidations, while offering Morpho-powered stablecoin lending vaults for retail depositors and institutions.
Maintainer signals as of 8/29/2026
Funding history
About 3F
3F provides infrastructure for leveraged strategies involving tokenized real-world assets on Ethereum. Users can select RWA vaults, set leverage ratios, and manage positions while 3F coordinates flash loans, bridge facilitators, and liquidations. The protocol also offers Morpho-powered lending vaults where users can deposit USDC or USDT to earn yield from lending against RWAs, with transparent risk parameters and no lock-ups. It serves retail depositors seeking yield or leveraged exposure and institutions requiring permissioned liquidity for bridge services and liquidation facilitation. The website identifies the offering as being in private beta.
Skills
About the Role
You will design build and maintain production backend services and APIs that support financial positions auctions portfolio tracking and blockchain transactions. You will work with databases asynchronous workflows and event driven systems where accuracy consistency security and reliability are critical. You will integrate services with DeFi protocols and blockchain infrastructure and own production systems through monitoring debugging and incident response. You will also contribute to architecture security standards and engineering practices.
Requirements
- Experience building and operating production backend systems
- Proficiency in Rust or TypeScript and willingness to work across both
- Experience designing reliable APIs services and data models
- Understanding of databases and distributed or event driven systems
- Experience owning software through development deployment and production operation
- Problem-solving skills and attention to correctness
- Ability to work independently in a small fast-moving engineering team
- Communication and collaboration skills
- Experience with DeFi lending and borrowing protocols
- Experience with Morpho or similar protocols
- Stablecoin or yield infrastructure experience
- Experience building financial trading or payments systems
- Experience with GCP GKE and Terraform
- Knowledge of CI/CD observability and production infrastructure
- Experience with blockchain transactions and smart contracts
Responsibilities
- Design build and maintain production backend services and APIs
- Build systems that coordinate financial and blockchain transactions
- Develop infrastructure for positions auctions and portfolio tracking
- Work with databases and accurate consistent data models
- Build and maintain asynchronous and event driven workflows
- Integrate backend systems with DeFi protocols and blockchain infrastructure
- Monitor debug and respond to incidents in production services
- Contribute to architecture security and engineering decisions
- Establish engineering standards and best practices
Benefits
- Remote working with UK/EU timezone overlap
- Token allocation
