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About the Role

As a Backend Software Engineer at Self, you will build and own the services and APIs that power Self Financial's mobile app and web experiences. This role is for an individual who can operate independently, make sound technical tradeoffs, and mentor junior engineers. You will contribute to backend services and APIs, enhance the team's approach to distributed systems and scalability, and build high-quality software in a fast-paced, collaborative environment with frequent releases. We prioritize creativity, quality, learning, and delivering reliable, secure systems to a large customer base.

Responsibilities

Design, build, and maintain backend services and APIs using Python, Flask, and FastAPI, with real ownership over your area of the system.
Design and implement REST endpoints consumed by web and mobile clients, with an eye toward scalability and long-term maintainability.
Work with relational databases (PostgreSQL/MySQL) to model data, write efficient queries, and make sound schema and indexing decisions.
Integrate with third-party services such as payment processors, credit bureaus, messaging, and analytics tools.
Write clean, maintainable code and provide thoughtful, constructive code reviews for other engineers.
Apply and help reinforce best practices for testing, security, performance, and safe releases across the team.
Collaborate with Product, Design, Frontend Engineering, QA, and your engineering manager to scope and ship user-focused improvements.
Debug complex issues, dig into unfamiliar parts of the codebase, and deepen the team's understanding of Self's backend architecture.
Contribute to team rituals, documentation, and continuous improvement, and help raise the technical bar for those around you.

Requirements

5+ years of professional software engineering experience, including meaningful ownership of backend services in production.
Strong working knowledge of Python and solid understanding of web application fundamentals.
Solid understanding of REST APIs and how backend services communicate with clients and other systems, including tradeoffs in API design.
Comfort with Git and common software development workflows, including code review and collaborative development practices.
A track record of writing reliable, tested, secure, and maintainable code.
Strong communication skills and the ability to work independently while collaborating effectively with a cross-functional team.
Professional experience with Flask or FastAPI in production environments.
Experience using agentic engineering tools (e.g., Claude, OpenAI/Codex, Copilot) to accelerate development workflows.
Strong experience with SQL and relational database design, including performance tuning.
Experience with cloud platforms (AWS preferred), containers (Docker), or message queues in production systems.
A track record of mentoring other engineers or leading technical initiatives, even informally.
Personal, professional, or open-source projects that demonstrate strong backend craftsmanship and system design thinking.
Must be a U.S. citizen or current green card holder.
Not able to provide visa sponsorship of any kind.

Skills

Python
Flask
FastAPI
REST APIs
Git
SQL
PostgreSQL
MySQL
AWS
Docker
Agentic engineering tools

Location

Remote

Work Type

Remote
Full-time

Experience Level

5+ years of professional software engineering experience

Education Level

Bachelor's degree in Computer Science, Software Engineering, a related technical field, or equivalent practical experience preferred.

Salary/Compensations

$145,000-175,000 annually

Benefits

Company equity in the form of Stock Options
Performance-based bonuses
Generous employer-paid health, vision and dental insurance coverage
Flexible vacation policy
Educational assistance
Free gym membership
Casual dress code
Team building events and activities
Remote work arrangements/ flexible work schedule
Paid parental leave

About the Company

Self Financial is a venture-backed, high-growth FinTech company with a mission to increase economic inclusion and financial resilience by empowering people to build credit and build savings.
We're looking for people who share our passion and are driven to tackle challenges, find solutions and make the financial space better for the communities we serve.
Our team is passionate about challenging the status quo of the credit industry by providing people accessible tools to take control of their credit.
Executing on our mission requires deep collaboration across our teams to ensure our products reach the people who can benefit from them the most, particularly the 100 million+ Americans who have no or low credit.

Equal Opportunity

We celebrate diversity and are committed to creating an inclusive environment for all employees. To that end, we seek to recruit, develop and retain the most talented people from a diverse candidate pool.
We are an Equal Opportunity Employer.
At this time, we are only able to consider applicants who are U.S. Citizens or Green Card Holders for employment opportunities. We appreciate your understanding.