Senior Software Engineer

StepTo; United States; Remote; USD 120,000 - 170,000; Full time

Job summary

StepTo in the United States is seeking a backend engineer to build enterprise AI infrastructure for financial institutions. You will own features end-to-end from design through testing and deployment, focusing on Python and FastAPI backends with PostgreSQL.

Join a small, hands-on team and contribute to architecture discussions, performance optimization, and delivering robust backend services with clear ownership.

Qualifications

• Strong software engineering fundamentals and backend experience.
• Practical ability to work with Python, FastAPI, and PostgreSQL.
• Systems thinking and the ability to diagnose performance or reliability issues.
• Independent, architecture-capable, and comfortable in ambiguous environments.
• Adaptable in a fast-moving context, preferring simple, robust solutions.

Responsibilities

• Develop and optimize backend services using Python and FastAPI.
• Build reliable interactions with PostgreSQL.
• Diagnose system bottlenecks and make architecture decisions.
• Deliver complete features across the development lifecycle, including testing and deployment.
• Identify product and infrastructure improvements and carry them through with initiative.

Skills

Backend development

Systems thinking

Independent work

Tools

Python

FastAPI

PostgreSQL

Job description

Role overview

Build enterprise AI infrastructure for financial institutions as part of a small, hands‑on engineering team. The role centers on a Python and FastAPI backend backed by PostgreSQL, with end-to-end ownership of features from design through testing and deployment.

Responsibilities

• Develop and optimize backend services using Python and FastAPI.
• Build reliable, efficient interactions with PostgreSQL.
• Diagnose system bottlenecks and make sound architecture decisions.
• Deliver complete features across the development lifecycle, including testing and deployment.
• Identify product and infrastructure improvements and carry them through with initiative.

Requirements

• Strong software engineering fundamentals and experience building backend systems.
• Practical ability to work with Python, FastAPI, and PostgreSQL.
• Systems thinking and the ability to investigate performance or reliability issues.
• Comfort making architecture decisions and delivering work independently.
• Adaptability in an ambiguous, fast-moving environment, with a preference for simple, robust solutions.