Backend Engineer

decircle

Backend Engineer responsible for building core API microservices and developing EVM smart contracts for a Web3 smart order routing solution. Engaging in database design and ensuring security and efficiency.

Posted 5/15/2026full-timeRemote • California • 🇺🇸 United StatesMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

AWSMicroservicesPostgresPythonRedisSoliditySQLTerraform

About the role

Key responsibilities & impact

Building and updating core API microservices to support and maintain new and existing features
Interacting with and potentially designing database systems for indexing platform and blockchain data efficiently at large scale
Working collaboratively with other engineers on the design and development of EVM smart contracts, with security and efficiency of the utmost importance

Requirements

What you’ll need

3+ years of backend engineering experience preferred
Comfortable with taking ownership of the planning and execution of production releases
Experience with high-intensity fast-moving teams or start-ups specifically
Creative and analytical problem-solving skills
Excellent communication skills to confidently and clearly articulate thoughts
Self-starter who proactively looks for opportunities to contribute to the team, and can work independently on deliverables
Technical skills: Python API microservice development, preferably in FastAPI
Poetry or similar for dependency management
Maintaining codebase style with Pylint/Mypy/Black/Isort or similar
Unit testing with Pytest
SQL relational database development (PostgreSQL preferred)
Redis for cache and volatile data storage
EVM smart contract development using Solidity
Libraries for interacting with blockchain data, web3py preferred
Testing with Foundry or similar blockchain forking frameworks
Planning tasks with github issues
Working with branches and pull requests
Automation of various CI/CD pipelines using Github Actions
Basic understanding of AWS services and terraform configs a plus
Orchestration of application deployment configs via ArgoCD or similar

Benefits

Comp & perks

Competitive salary

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

PythonAPI microservice developmentFastAPIPoetryPylintMypyBlackIsortUnit testingPytest

Soft Skills

problem-solvingcommunicationself-startercollaborationownershipcreativityanalytical thinkingindependenceplanningexecution