Sr Software Engineer Python

Job Summary

At Pay Pal, Senior Software Engineers play a critical role in designing and building the systems that power secure global transactions every day. As a Backend Python Engineer focused on Identity and Authentication, you will develop large-scale, high-performance backend solutions that ensure trust, security, and seamless customer experiences. You’ll work on complex technical challenges, collaborate with cross-functional teams, and contribute to the evolution of Venmo's identity platform.

This role requires strong problem-solving skills, deep technical expertise, and a passion for building reliable, scalable software.

• Delivers complete solutions spanning all phases of the Software Development Lifecycle (SDLC) (design, implementation, testing, delivery and operations), based on definitions from more senior roles.
• Advises immediate management on project-level issues.
• Guides junior engineers.
• Operates with little day-to-day supervision, making technical decisions based on knowledge of internal conventions and industry best practices.
• Applies knowledge of technical best practices in making decisions.
• Design, develop, and maintain backend services for identity and authentication, leveraging Python and frameworks such as Django or Flask.
• Implement secure token management solutions, including OAuth2 and related standards.
• Build scalable, fault-tolerant systems that meet high availability and performance requirements.
• Collaborate with product managers, architects, and other engineers to deliver impactful business outcomes.
• Write clean, maintainable, and well-tested code while adhering to engineering best practices.
• Participate in code reviews, design discussions, and contribute to improving development processes.
• Troubleshoot and resolve complex technical issues across distributed systems.
• Continuously optimize system performance and reliability through proactive improvements.

3+ years relevant experience and a Bachelor’s degree OR any equivalent combination of education and experience.

• 4+ years of software engineering experience with a Bachelor’s degree OR a comparable combination of education and experience.
• Strong foundation in programming concepts, data structures, and algorithms.
• Proficiency in Python and experience with frameworks such as Django or Flask.
• Understanding of web services, REST APIs, and Service-Oriented Architecture (SOA).
• Familiarity with relational and/or No
  
  SQL databases.
• Experience with version control systems (e.g., Git) and collaborative development workflows.

• Experience with identity and authentication technologies, including OAuth2 and secure token management.
• Exposure to large-scale, high-performance distributed systems.
• Familiarity with cloud platforms such as AWS, GCP, or Azure.
• Awareness of the payments industry and related compliance or regulatory standards.

The Venmo Identity Engineering team powers the authentication and authorization experiences that millions of Venmo customers rely on every day. We design and build secure, high-performance systems that drive trust and simplicity across Venmo's ecosystem. Our team partners closely with product, design, and security to deliver innovative, customer‑first solutions.

$143,500 – $212,850 annually

$130,500 – $193,600 annually

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At Pay Pal, we’re committed to building an equitable and inclusive global economy. We offer comprehensive, choice-based programs to support all aspects of personal well-being—physical, emotional, and financial—delivering meaningful value where it matters most. We strive to create a flexible, balanced work culture with a holistic approach to benefits, including generous paid time off, healthcare coverage for you and your family, and resources to create financial security and support your mental health.

Pay Pal provides equal employment opportunity (EEO) to all persons regardless of age, color, national origin, citizenship status, physical or mental disability, race, religion, creed, gender, sex, pregnancy, sexual…