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Senior Fullstack Engineer - San Francisco

PayZen is on a mission to bring financial health to healthcare. Our products improve both access and affordability for patients and cash flow & administrative complexity for medical providers. We are trusted by a rapidly growing number of health systems, hospitals, and physician groups and are backed by leading venture capital investors.


What you will do
  • Collaborate with product managers and engineers to design and build user-centric products that make a meaningful impact on people's lives.
  • Write reusable, testable, and efficient code while adhering to best practices for maintainability and performance.
  • Develop new features and user interfaces with a mobile-first approach, ensuring seamless experiences across devices.
  • Contribute to the architecture and design of the product, participating in technical discussions and decision-making processes.
  • Solve complex technical challenges, including creating object models, defining APIs, and building web services.
  • Work closely with cross-functional teams to develop a deep understanding of business needs and translate them into effective technical solutions.
  • Support team success by fostering collaboration, sharing knowledge, and contributing to a positive and productive work environment.


What you will bring
  • 4+ years of experience in full stack software development, including at least 1 year of success in a 0-to-1 product environment.
  • 4+ years of experience in JavaScript technologies, including Node.js and React.Js
  • Strong understanding of user experience, product strategy, and scalable database design.
  • A collaborative mindset and excellent communication skills, both written and verbal.
  • A track record of designing, building, and deploying high-quality, customer-focused solutions.
  • Experience with testing platforms, unit testing, and clean, maintainable code.


Why Payzen?
  • An opportunity to positively affect the lives of thousands of patients
  • A chance to join a high-growth company at an early stage.
  • Contribute to the development of a product that revolutionizes medical payments in ways never seen before.
  • Become a key member of a collaborative, high performing team, shaping its growth and success.
  • Competitive pay, benefits and stock options.


$190,000 - $225,000 a year
Market competitive salary with an anticipated base compensation range of $190,000 - $225,000. Actual salaries will vary depending on a candidate’s experience, qualifications, skills, and location. Full-time employees are also eligible for a competitive equity package, and benefits.

Average salary estimate

$207500 / YEARLY (est.)
min
max
$190000K
$225000K

If an employer mentions a salary or salary range on their job, we display it as an "Employer Estimate". If a job has no salary data, Rise displays an estimate if available.

What You Should Know About Senior Fullstack Engineer - San Francisco, Payzen Inc.

Are you a Senior Fullstack Engineer looking for an exciting opportunity in San Francisco? Look no further than PayZen! We're on a mission to enhance financial health in healthcare, making life easier for both patients and medical providers. As a Senior Fullstack Engineer at PayZen, you won't just write code; you'll create user-centric products that have a real impact. Collaborating with product managers and engineers, you'll design features that prioritize user experience while utilizing the latest JavaScript technologies like Node.js and React.js. Your ability to write testable and efficient code will be key, along with your talent for making complex technical challenges seem like a breeze. With an understanding of scalable database design and a collaborative mindset, you'll support our team culture by sharing knowledge and fostering a productive work environment. This role offers you a chance to directly contribute to a high-growth company that’s revolutionizing medical payments. Not only will you have competitive pay ranging from $190,000 to $225,000, but you’ll also be eligible for a fantastic equity package and benefits. Join us at PayZen and be a part of something transformative!

Frequently Asked Questions (FAQs) for Senior Fullstack Engineer - San Francisco Role at Payzen Inc.
What are the primary responsibilities of a Senior Fullstack Engineer at PayZen?

As a Senior Fullstack Engineer at PayZen, your main responsibilities include collaborating with product teams to design user-centric products, writing reusable and efficient code, developing mobile-first features, and contributing to product architecture. You will also tackle complex technical challenges and work closely with cross-functional teams to deliver effective technical solutions.

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What qualifications are required for the Senior Fullstack Engineer position at PayZen?

To qualify for the Senior Fullstack Engineer role at PayZen, you should have at least 4 years of experience in full stack software development, with a minimum of 1 year in a 0-to-1 product environment. Comprehensive knowledge in JavaScript technologies, particularly Node.js and React.js, along with strong communication skills and a background in scalable database design, are crucial for success in this position.

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How does the Senior Fullstack Engineer role at PayZen contribute to the company's mission?

The Senior Fullstack Engineer at PayZen plays a vital role in driving our mission by building and improving products that enhance access and affordability in healthcare. Your work will directly impact patient experiences and streamline administrative tasks for medical providers, all while fostering a collaborative environment aimed at innovative solutions.

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What types of technologies will a Senior Fullstack Engineer use at PayZen?

In the Senior Fullstack Engineer position at PayZen, you'll primarily work with JavaScript technologies such as Node.js and React.js. Additionally, you'll be involved in developing APIs, web services, and ensuring that your code is maintainable while implementing best practices for performance.

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What is the salary range for a Senior Fullstack Engineer at PayZen?

PayZen offers a market-competitive salary for a Senior Fullstack Engineer, with an expected range between $190,000 and $225,000 annually. Actual salaries can vary based on individual experience and qualifications, and full-time employees are also eligible for equity options and additional benefits.

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Common Interview Questions for Senior Fullstack Engineer - San Francisco
Can you describe your experience with JavaScript technologies, particularly Node.js and React.js?

Certainly! When answering this question, highlight specific projects where you've used Node.js and React.js. Discuss the challenges you faced, how you overcame them, and the impact your work had on the project. This demonstrates both your technical expertise and problem-solving skills.

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How do you approach designing user-centric products?

In response, focus on your methods for gathering user feedback and how it influences product design. Discuss the importance of usability testing and your strategies for creating engaging interfaces that improve user experience. Conveying a user-focused mindset will showcase your suitability for the role.

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What strategies do you implement to write reusable and maintainable code?

For this question, you can discuss specific techniques such as code reviews, following coding standards, and implementing design patterns. Emphasize the importance of maintainability for long-term project success and how you actively ensure code is clear and understandable for others.

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How do you keep up with industry trends and technologies in software development?

Discuss your commitment to continuous learning through attending workshops, participating in online courses, and engaging with developer communities. Highlight specific resources you use to stay current, showcasing your proactive approach to professional development in the ever-evolving tech landscape.

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How do you handle complex technical challenges in a project?

In your answer, provide an example of a complex challenge you've faced in previous roles. Detail the steps you took to analyze the problem, collaborate with teammates, and implement an effective solution, illustrating your analytical and teamwork skills.

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Describe your experience working in a collaborative team environment.

Here, emphasize the importance of collaboration in successful software development. Share examples of how you’ve contributed to team dynamics, facilitated discussions, and shared knowledge, reinforcing your ability to work well with others in achieving common goals.

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Can you talk about a project where you successfully contributed to product architecture and design?

When answering, provide a specific example where your input in architectural decisions made a significant impact on the project. Discuss the collaboration involved and both the technical and business considerations that were addressed during the design phase.

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How do you ensure that your code is testable and meets established quality standards?

Discuss your approach to writing unit tests and utilizing testing frameworks. Sharing your understanding of TDD (Test-Driven Development) and the importance of code quality helps show your commitment to delivering high-quality, reliable software.

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What role does user feedback play in your development process?

To answer, highlight how you actively seek and value user feedback throughout the product lifecycle. Explain how this feedback informs iterative design and development approaches, ultimately leading to better user-centered solutions.

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What motivates you to work in the healthcare technology space?

In your response, express genuine passion for using technology to solve real-world problems, particularly in impacting patient care and administrative efficiency. Sharing personal stories or reasons for your interest in healthcare tech can further emphasize your motivation and fit for PayZen's mission.

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PayZen is a healthcare fintech startup that aims to tackle the growing patient payment responsibility problem. The mission-driven company together with its superior technology and a new approach enables patients to pay their out-of-pocket medical ...

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March 25, 2025

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