BACKEND / PYTHON SOFTWARE ENGINEER (Staff, Principal, Lead)

JobCubby; San Francisco, Northern (CA, KY); Hybrid; USD 300,000 - 380,000; Full time

Job summary

JobCubby is seeking a Staff/Principal/Lead Backend Engineer to drive core product development for a financial services platform.

You will work on a Python (FastAPI) stack with Postgres and Redis on AWS, potentially exploring Rust or Go for performance-critical services.

Qualifications

• 5+ years building and shipping web applications in Python, Go, or Rust.
• Experience working with Postgres, Redis, AWS, and related backend technologies.

Responsibilities

• Lead backend engineering for the core product and APIs.
• Define scalable API architecture and performance standards.
• Collaborate with founders to set coding standards and drive delivery.

Skills

Python

Redis

PostgreSQL

Go

AWS

Rust

FastAPI

Job description

Backend / Python Software Engineer (Staff, Principal, Lead)

Compensation: $300k – $380k

No equity

Location: San Francisco

Experience Required: 5+ years

Employment Type: Full Time

Skills Required

• Python
• Redis
• PostgreSQL
• Go (Golang)
• AWS
• Rust
• FastAPI

Job Description

We're seeking a Staff Backend Engineer to lead our core product development. Our backend serves a REST API that powers our iOS, Android, and Web frontends. You will integrate with cryptocurrency wallet and banking service providers, among other services for auth, ledger, payment rails, etc.

This is a financial services application with significant complexity, handling real money at scale, internationally.

Our backend is a Python (FastAPI) monolith supported by Postgres and Redis on AWS. We are open to Rust and/or Go for any services that need to be broken out for performance.

This is a critically important role on our team. You'll be working directly with the technical founders to set standards and build a highly performant, reliable, and secure app from the ground up. This role may evolve into a backend or general engineering lead as we scale.

Requirements

• 5+ years building and shipping web applications in Python, Go, or Rust
• Experience generally across the backend: working with Postgres, Redis, AWS, etc.

Bonuses

You might be an especially good fit if you have:

• Experience in financial technology
• Full-stack engineering skillset and ability to flex across other parts of the stack

Benefits

What We Offer

• $300K–$380K cash compensation — no equity gamble required
• Day 1 impact on partner products used by millions globally
• Shape technical vision and architecture as we scale
• Ground-floor opportunity in the rapidly expanding stablecoin ecosystem