Senior Software Engineer - Full Stack

PayPal•San Jose, CA

1d•Hybrid

About The Position

The Company PayPal has been revolutionizing commerce globally for more than 25 years. Creating innovative experiences that make moving money, selling, and shopping simple, personalized, and secure, PayPal empowers consumers and businesses in approximately 200 markets to join and thrive in the global economy. We operate a global, two-sided network at scale that connects hundreds of millions of merchants and consumers. We help merchants and consumers connect, transact, and complete payments, whether they are online or in person. PayPal is more than a connection to third-party payment networks. We provide proprietary payment solutions accepted by merchants that enable the completion of payments on our platform on behalf of our customers. We offer our customers the flexibility to use their accounts to purchase and receive payments for goods and services, as well as the ability to transfer and withdraw funds. We enable consumers to exchange funds more safely with merchants using a variety of funding sources, which may include a bank account, a PayPal or Venmo account balance, PayPal and Venmo branded credit products, a credit card, a debit card, certain cryptocurrencies, or other stored value products such as gift cards, and eligible credit card rewards. Our PayPal, Venmo, and Xoom products also make it safer and simpler for friends and family to transfer funds to each other. We offer merchants an end-to-end payments solution that provides authorization and settlement capabilities, as well as instant access to funds and payouts. We also help merchants connect with their customers, process exchanges and returns, and manage risk. We enable consumers to engage in cross-border shopping and merchants to extend their global reach while reducing the complexity and friction involved in enabling cross-border trade. Our beliefs are the foundation for how we conduct business every day. We live each day guided by our core values of Inclusion, Innovation, Collaboration, and Wellness. Together, our values ensure that we work together as one global team with our customers at the center of everything we do – and they push us to ensure we take care of ourselves, each other, and our communities. Job Summary: As a Senior Full Stack Developer on the Personalization Platform team, you will design and build the web applications, tools, and backend services that empower data scientists, ML engineers, and product partners to develop, deploy, and monitor large-scale personalization systems at PayPal. You will own end-to-end development of high-quality user interfaces and scalable backend services that support experimentation, feature management, model configuration, insights dashboards, and real-time personalization workflows. In this role, you will combine strong engineering fundamentals with a product-driven mindset to create intuitive, performant, and reliable tools that accelerate the machine learning lifecycle. You will collaborate closely with cross-functional teams to translate complex personalization and ML requirements into robust system designs and seamless user experiences. Your work will involve integrating backend services with feature stores, streaming systems, model registries, and cloud infrastructure, while ensuring code quality, security, testing, and observability across the full stack. You will contribute to architectural decision-making, uphold engineering best practices, identify and resolve performance bottlenecks, and advocate for user-centered design principles. Ultimately, you will help build the platforms and interfaces that power personalization at scale and enable teams across PayPal to experiment, innovate, and deliver impactful ML-driven experiences. Job Description: Essential Responsibilities: 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 Expected Qualifications: 3+ years relevant experience and a Bachelor’s degree OR Any equivalent combination of education and experience. Additional Responsibilities & Preferred Qualifications: Additional Qualifications Strong proficiency in frontend technologies such as React, TypeScript, JavaScript, Redux, or modern UI frameworks. Experience building robust backend services using Java, Node.js, Python, or Go. Strong understanding of REST APIs, microservices, and distributed systems. Experience integrating with cloud environments (GCP, AWS, Azure) and containerized services (Docker, Kubernetes). Familiarity with relational and NoSQL databases, caching systems, and data modeling principles. Solid understanding of CI/CD, automated testing, observability, and secure software development practices. Excellent communication skills, with the ability to translate user needs into technical solutions. Preferred Qualifications Experience developing tools that support ML workflows (feature management, model monitoring, dashboards, experimentation tooling). Familiarity with data streaming frameworks (Kafka, Flink) or real-time data processing pipelines. Experience working with ML model metadata, feature stores, or model registries. Understanding of A/B testing methodologies and experimentation dashboards. Background building internal developer tools or platform engineering products. About the Team The Consumer Engineering team powers the experiences that millions of PayPal customers use every day to send, spend, and manage their money safely and effortlessly. We design and build reliable, high-performance systems that drive trust and simplicity across PayPal’s global ecosystem. Our team partners closely with product, design, and data science to deliver innovative, customer-first solutions that advance PayPal’s mission to make financial services more accessible, inclusive, and empowering for people everywhere. Subsidiary: PayPal Travel Percent: 0 - PayPal is committed to fair and equitable compensation practices. Actual Compensation is based on various factors including but not limited to work location, and relevant skills and experience. The total compensation for this practice may include an annual performance bonus (or other incentive compensation, as applicable), equity, and medical, dental, vision, and other benefits. For more information, visit https://www.paypalbenefits.com. The US national annual pay range for this role is $123,500 to $212,850 PayPal does not charge candidates any fees for courses, applications, resume reviews, interviews, background checks, or onboarding. Any such request is a red flag and likely part of a scam. To learn more about how to identify and avoid recruitment fraud please visit https://careers.pypl.com/contact-us. For the majority of employees, PayPal's balanced hybrid work model offers 3 days in the office for effective in-person collaboration and 2 days at your choice of either the PayPal office or your home workspace, ensuring that you equally have the benefits and conveniences of both locations. Our Benefits: At PayPal, we’re committed to building an equitable and inclusive global economy. And we can’t do this without our most important asset—you. That’s why we offer benefits to help you thrive in every stage of life. We champion your financial, physical, and mental health by offering valuable benefits and resources to help you care for the whole you. We have great benefits including a flexible work environment, employee shares options, health and life insurance and more. To learn more about our benefits please visit https://www.paypalbenefits.com. Who We Are: Click Here to learn more about our culture and community. Commitment to Diversity and Inclusion PayPal 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 orientation, gender identity and/or expression, genetic information, marital status, status with regard to public assistance, veteran status, or any other characteristic protected by federal, state, or local law. In addition, PayPal will provide reasonable accommodations for qualified individuals with disabilities. If you are unable to submit an application because of incompatible assistive technology or a disability, please contact us at [email protected]. Belonging at PayPal: Our employees are central to advancing our mission, and we strive to create an environment where everyone can do their best work with a sense of purpose and belonging. Belonging at PayPal means creating a workplace with a sense of acceptance and security where all employees feel included and valued. We are proud to have a diverse workforce reflective of the merchants, consumers, and communities that we serve, and we continue to take tangible actions to cultivate inclusivity and belonging at PayPal. Any general requests for consideration of your skills, please Join our Talent Community. We know the confidence gap and imposter syndrome can get in the way of meeting spectacular candidates. Please don’t hesitate to apply. PayPal is on a mission to revolutionize commerce globally. We’re driving our company, industry, and society forward with vision and velocity. With our commitment to excellence, innovation, and talent, the possibilities are limitless. Learn more at PayPal.com/Jobs Learn more about privacy-related questions or data retention. If you would like your profile to be deleted from our system, please let us know Please note that this site has updated features that can’t run on older versions of Internet Explorer. Please use IE11 or MS Edge for an optimal experience. When applying for a job you are required to create an account, if you have already created an account - click Sign In. Creating an account will allow you to follow the progress of your applications. Our system does have some requirements that will help us process your application, below are some guidelines for creation of your account: Provide full legal First Name/Family Name – this is important for us to ensure our future hires have the right system set up. Please Capitalize first letter of your First and Last Name. Please avoid using fully capitalized text for your First and/or Last Name. NOTE: If your name is hyphenated or has multiple capitalization, please use the same format as your government ID. Please note that this site has updated features that can’t run on older versions of Internet Explorer. Please use IE11 or MS Edge for an optimal experience.

Requirements

3+ years relevant experience and a Bachelor’s degree OR Any equivalent combination of education and experience.
Strong proficiency in frontend technologies such as React, TypeScript, JavaScript, Redux, or modern UI frameworks.
Experience building robust backend services using Java, Node.js, Python, or Go.
Strong understanding of REST APIs, microservices, and distributed systems.
Experience integrating with cloud environments (GCP, AWS, Azure) and containerized services (Docker, Kubernetes).
Familiarity with relational and NoSQL databases, caching systems, and data modeling principles.
Solid understanding of CI/CD, automated testing, observability, and secure software development practices.
Excellent communication skills, with the ability to translate user needs into technical solutions.

Nice To Haves

Experience developing tools that support ML workflows (feature management, model monitoring, dashboards, experimentation tooling).
Familiarity with data streaming frameworks (Kafka, Flink) or real-time data processing pipelines.
Experience working with ML model metadata, feature stores, or model registries.
Understanding of A/B testing methodologies and experimentation dashboards.
Background building internal developer tools or platform engineering products.

Responsibilities

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

Benefits

PayPal is committed to fair and equitable compensation practices.
The total compensation for this practice may include an annual performance bonus (or other incentive compensation, as applicable), equity, and medical, dental, vision, and other benefits.
flexible work environment
employee shares options
health and life insurance

Stand Out From the Crowd

Upload your resume and get instant feedback on how well it matches this job.

Upload and Match Resume