Senior Software Engineer - Business Systems

About Self Financial

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 challenge the status quo of the credit industry by giving people accessible tools to take control of their credit, with a focus on the 100 million+ Americans who have no or low credit. We're looking for people who share our passion, tackle challenges, find solutions, and make the financial space better for the communities we serve.

Title

Senior Software Engineer – Business Systems

Team

Business Systems Team. Builds and operates the integration layer that connects our core platforms (CRM, payments, and internal services) to the tools our customer-facing teams use every day. It's a high-traffic, latency-sensitive environment: our services handle hundreds of thousands of requests a day, and performance directly affects people using them in real time.

Location: Austin, TX.

Work Arrangement: Austin - Hybrid or Remote

About the Role

You'll own real production performance problems backed by real data, not hypothetical scaling concerns. The team recently completed an evidence-based incident investigation that traced a latency issue to specific code-level causes and shipped fixes that measurably cut error rates and response times. If you like solving concrete, high-impact problems and can back your reasoning with data, you'll fit right in.

What you'll do:

Design, build, and maintain Python REST services that integrate our CRM platform with payments, account management, and internal data services

Diagnose and resolve production performance issues, including blocking I/O, connection handling, caching, and API latency under load

Use async Python (asyncio) to parallelize I/O-bound work safely, and implement and tune caching layers (e.g., Redis)

Build and maintain CRM integrations (e.g., Salesforce), including data queries and REST-based sync

Deploy and operate services in AWS or a similar cloud, using APM/observability tools to trace requests and validate fixes

Write clean, well-tested code with clear separation of API, business logic, and infrastructure layers

Join a rotating on-call/production-support role and collaborate with engineering, DevOps/SRE, and product partners

What You Bring

Strong professional Python experience, including async programming and building/maintaining REST APIs

Solid understanding of data integration between services: moving, syncing, and reconciling data (batch or event-driven), handling failures and retries, and keeping data consistent

Solid understanding of HTTP and API design (pagination, timeouts, rate limiting, caching) and experience debugging performance in live services

Experience with a key-value or caching store (Redis a plus) and comfort with caching/invalidation tradeoffs

Experience with a major cloud provider (AWS preferred): serverless, containers, or similar

Comfort reading logs and distributed traces to debug systems issues

Strong written and verbal communication; this team documents root causes and coordinates fixes across engineering teams

What Separates You

Experience with Twilio (Voice, Studio, Flex, or similar telephony/IVR); we're happy to train a strong Python engineer

Experience integrating with Salesforce (SOQL, Apex, REST APIs)

Familiarity with an APM/observability platform (e.g., Dynatrace, Datadog, New Relic), including OpenTelemetry or structured logging

Comfort writing SQL for debugging and data validation across systems

Familiarity with OpenAPI/Swagger

Experience with AWS Step Functions, container autoscaling, or infrastructure-as-code (Terraform)

Prior on-call/production-support experience in a fast-moving environment

Salary Pay Range

$140,000 – $170,000 annually. Individual pay and level are based on factors unique to each candidate, including skill set, experience, region, and other job-related reasons.

Benefits & Perks

Generous health, dental, and vision insurance coverage

Employer-paid benefits including life, disability, and cost-containment resources

Hybrid work arrangement

Flexible vacation

Company performance-based bonuses

Paid parental leave

Company equity in the form of stock options

Education reimbursement program

Relocation bonus to move to Austin

Gym membership options through ClassPass or monthly reimbursement

Lunchdrop stipend

Paid parking

ERG and inclusion opportunities

Casual dress code

Team building events and activities

Referral program

Equal Opportunity Employer

Self Financial is an Equal Opportunity Employer. We celebrate diversity and are committed to an inclusive environment. We do not discriminate on the basis of any protected group status under applicable law. If you need an accommodation during the application or interview process, please let us know.

Work Authorization

We can only consider candidates who are U.S. citizens or permanent residents (green card holders). We are unable to offer visa sponsorship of any kind, now or in the future. All new hires must successfully pass a background check.

AI Integrity Policy

Self Financial is an AI-forward company. Our interview process is designed to understand your own career experience, technical acumen, and communication skills. Please do not use AI tools to generate or assist with your answers during interviews unless we explicitly invite you to. If we have reason to believe AI was used in a way that misrepresents your own abilities, we may remove you from the interview process and from consideration for future opportunities at Self.