Full Stack Engineer • Senior

Who you are

You have 5+ years of experience in software engineering, with a strong focus on both frontend and backend development. Your expertise in JavaScript and frameworks like React allows you to create engaging user interfaces while ensuring seamless integration with backend services. You understand the importance of user experience and are committed to delivering high-quality solutions that meet user needs.

Your experience with REST APIs and data pipelines means you can design and implement robust systems that enhance user onboarding and overall platform experience. You thrive in agile environments, where rapid iteration and continuous improvement are key to success. You are comfortable collaborating with cross-functional teams, including product managers, designers, and data analysts, to identify and solve critical challenges.

You are data-driven, utilizing analytics to measure the impact of your work and identify opportunities for improvement. Your ability to communicate technical concepts to non-technical stakeholders makes you an effective team player. You are passionate about empowering users and are excited about the opportunity to contribute to a mission-driven company.

Desirable

Experience in the FinTech industry is a plus, as it gives you insight into the unique challenges and opportunities in this space. Familiarity with agile methodologies and tools like Jira or Trello will help you adapt quickly to our workflow. A background in user experience design can also enhance your contributions to the team.

What you'll do

As a Senior Full Stack Engineer at Flex, you will play a pivotal role in developing and scaling our platform and app experiences. Your primary focus will be on creating exceptional user and partner experiences that drive engagement and retention. You will partner closely with product managers, designers, and data scientists to identify and solve critical user onboarding challenges.

You will design, develop, test, and deploy robust APIs, services, and data pipelines that enhance user onboarding and overall platform experience. Your work will involve implementing changes through an agile methodology, prioritizing rapid iteration and continuous improvement. You will utilize data and analytics to measure the impact of your work and identify opportunities for further enhancement.

Collaboration is key in this role, as you will work alongside a dynamic team to unlock our next phase of growth. You will be instrumental in shaping the future of rent payments, ensuring that our users have the flexibility they need to manage their most significant recurring expense.

What we offer

At Flex, we offer competitive medical, dental, and vision benefits from Day 1, along with company equity and a 401(k) plan with a company match starting in 2026. You will enjoy unlimited paid time off and 13 company-paid holidays, as well as parental leave and access to our Flex Cares Program. For full-time non-US employees, we provide competitive compensation and company equity, along with unlimited PTO. Join us in our mission to empower renters and make a meaningful impact in the FinTech space.