Lead Engineer II Backend (Python)

Best Egg is a market-leading tech-enabled financial platform helping people build financial confidence through a variety of installment lending solutions and financial health tools. We aim to help customers make smart financial decisions and stay on track so they can be money confident no matter what life throws at them.

We offer top-tier benefits and growth opportunities in a culture built on our core values:

Put People First We foster an inclusive flexible and fun workplace.

Create Clarity Open communication drives trust and results.

Get Things Done We focus prioritize and deliver with excellence.

Deliver with Heart We lead with kindness humility and strong teamwork.

Listen to Our Customers Their needs drive our innovation.

Barclays has entered into an agreement to acquire Best Egg withclosing expected to take placein Q2 2026. This acquisition will give us the resources and capital to continue on our mission and drive our strategy forward. With an aligned culture lower cost of funds and increased employee growth opportunities across a global brand we are excited about the future of the Best Egg brand under the Barclays umbrella.

We are looking for collaborative innovative team players who like to solve problems. There will also be immense opportunities for those willing to dive in. If youre inspired by growth and want to make a real difference Best Egg is the place for you.

Were proud to be an equal opportunity employer committed to building a diverse inclusive team.

The Lead Software Engineer II Backend plays an important role in building and enhancing backend engineering solutions across the organization. This role focuses on designing and delivering reliable high-quality Python services on AWS while contributing to technical discussions improving engineering practices and supporting team execution. You will work closely with senior engineers Product and other backend and frontend teams to build performant maintainable and scalable APIs serverless functions and containerized services.

What You Will Do

Technical Leadership & Delivery

• Design develop and deliver high-quality backend Python services iteratively and incrementally.
• Take ownership of key services and APIsfrom hands-on coding through CI/CD deployment to AWS monitoring and on-call support.
• Contribute to backend observability using tools like Datadog for logging metrics distributed tracing and alerting.
• Participate in technical design discussions and contribute architectural insights working with senior leaders to shape solutions.
• Ensure software follows modern engineering practices including clean code testing automation and modern backend architecture patterns.
• Support continuous improvement in code quality reliability performance and developer experience.
• Translate business requirements into clear technical tasks and help validate assumptions and approaches.

Qualifications & Experience

Technical Expertise

• 37 years of professional backend software engineering experience.
• Proficiency in Python at scale including modern Python (3.13) type hints async/await packaging and a strong grasp of the standard library and the broader ecosystem.
• Expertise with at least one major Python web framework (FastAPI preferred; Django or Flask also strong) and the patterns that make Python services reliable in production.
• Strong hands-on experience with AWS including building and operating production workloads on Lambda (serverless functions event-driven architectures) and EKS (containerized services on Kubernetes).
• Working knowledge of supporting AWS services such as API Gateway SQS/SNS S3 IAM CloudWatch and Secrets Manager.
• Experience designing and building RESTful APIs
• Working knowledge of PostgreSQL
• Experience with Redis for caching rate limiting
• Experience with containerization (Docker) and Kubernetes fundamentals (deployments services scaling troubleshooting).
• Experience with CI/CD pipelines and modern release tooling; familiarity with GitHub Actions and Octopus Deploy is a plus.
• Experience with unit integration and contract testing (pytest or similar).
• Experience working within mature legacy codebases and contributing to incremental modernization efforts.

What Success Looks Like

In the first 90 days

• Own core services or features.
• Deliver high-quality production-ready code and contribute meaningfully to team goals.
• Build strong working relationships within Engineering Product and partner teams.

In 612 months

• Lead development of one or more services or features with increasing autonomy.
• Help improve service performance reliability and scalability.
• Support and elevate engineering practices through mentorship code reviews and process improvements.

$100000 - $135000 a year

Employee Benefits

Best Egg offers many additional benefits for our employees including (but not limited to):

Pre-tax and post-tax retirement savings plans with a competitive company matching

program

Generous paid time-off plans including vacation personal/sick time paid short--

term and long-term disability leaves paid parental leave and paid company

holidays

Multiple health care plans to choose from including dental and vision options

Flexible Spending Plans for Health Care Dependent Care and Health

Reimbursement Accounts

Company-paid benefits such as life insurance wellness platforms employee

assistance programs and Health Advocate programs

Other great discounted benefits include identity theft protection pet insurance

fitness center reimbursements and many more!

In compliance with the CCPA Best Egg is fully committed to handling the personal information and data of employees and job applications responsibly with respect and due care. Review our CCPA Employee Policy here

Required Experience:

IC