Senior Software Engineer - Business Systems

Posted 2 Months Ago
Austin, TX, USA
Hybrid
140K-170K Annually
Senior level
Fintech • Mobile • Social Impact • Software • Financial Services
Self Financial is a credit building company dedicated to helping people establish credit and a financial foundations.
The Role
Build and operate Python REST services integrating CRM, payments, and internal systems. Diagnose production performance issues, optimize asynchronous I/O and caching, maintain Salesforce integrations, deploy cloud services, and use observability tools to trace bottlenecks. The role includes testing, architectural design, on-call production support, incident prevention, and cross-functional collaboration with engineering, DevOps, SRE, and product teams.
Summary Generated by Built In
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.

Skills Required

  • Strong professional experience with Python, including asynchronous programming and building or maintaining REST APIs
  • Experience with data integration between services, including synchronization, reconciliation, failure handling, retries, and data consistency
  • Understanding of HTTP and API design, including pagination, timeouts, rate limiting, and caching
  • Experience debugging performance issues in live services
  • Experience with a key-value or caching data store
  • Experience with at least one major cloud provider; AWS preferred
  • Experience with serverless functions, containerized services, or similar cloud services
  • Ability to read logs and distributed traces to debug systems issues
  • Strong written and verbal communication skills
  • Experience with Twilio or similar telephony or IVR platforms
  • Experience integrating with Salesforce, including SOQL, Apex, or REST APIs
  • Familiarity with APM or observability platforms such as Dynatrace, Datadog, or New Relic
  • Experience with distributed tracing, OpenTelemetry, or structured logging
  • Comfort writing SQL for debugging and data validation
  • Familiarity with API documentation tools such as OpenAPI or Swagger
  • Experience with AWS Step Functions, container autoscaling, or infrastructure as code such as Terraform
  • Prior on-call or production-support experience

Self Financial Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Self Financial and has not been reviewed or approved by Self Financial.

  • Healthcare Strength — Medical, dental, vision, life, and disability coverage are extensive, complemented by wellness and mental health programs.
  • Parental & Family Support — Paid parental leave, fertility benefits, family medical leave, and a structured return-to-work program indicate strong caregiver support.
  • Leave & Time Off Breadth — Flexible or unlimited PTO, alongside paid holidays and sick time, provides broad time-away options for work-life balance.

Self Financial Insights

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The Company
HQ: Austin, TX
200 Employees
Year Founded: 2015

What We Do

Everyone deserves the chance to improve their financial future. We believe financial progress should be within reach for everyone. We exist to enable people to build credit, build savings, and reach their goals. Every role here connects directly to that purpose, and you'll see the impact of your work in real outcomes for real people.

Why Work With Us

It's not every day you have the opportunity to work for a company with a strong mission that has meaningful impact on people's lives. If you're searching for a higher purpose and you're passionate about helping to improve people's financial situation, then Self is just the place.

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