This is an ideal role for a high-level backend expert with at least **6 years of experience** who enjoys the intersection of finance and distributed systems. Wh
Work type: remote
Location: New York, New York, United States; Remote (U.S.); San Francisco, California, United States
Salary: $200,000 – $250,000/yr
Type: Full-time
This is an ideal role for a high-level backend expert with at least **6 years of experience** who enjoys the intersection of finance and distributed systems. While the listing is tagged "Mid-level," the "Staff" title and expectations suggest they are looking for a technical leader who can design architecture, mentor others, and handle complex money movements (ACH, reconciliation, and auditing). You should be proficient in modern backend languages like **Java, Python, Golang, or Node.js** and have deep experience with **AWS** infrastructure. The compensation is highly competitive, reaching up to **$250,000** for Tier A markets, plus equity and a 401(k) match. The role offers significant autonomy through a **fully remote** environment and a "remote-first" culture that values independence. As a "growth-stage" company moving out of stealth, this is a prime opportunity to shape the core platform of a FinTech product that is scaling rapidly. **You might be a good fit if you:** * Have successfully led complex engineering projects and enjoy setting technical direction. * Have deep experience with financial reporting, reconciliation, or payment rails like ACH. * Are comfortable with "Infrastructure as Code" (Terraform/CDK) and managing distributed systems on AWS. * Thrive in a startup environment where you can balance hands-on coding with high-level system design.
Flex is a growth-stage, NYC headquartered FinTech company that is creating the best rent payment experience. It’s hard to believe that it’s 2026 and paying rent on time is expensive, inflexible, and difficult. We’re here to change that! Flex enables our users to pay rent throughout the month on a schedule that better fits their finances and budget. Our mission is to empower as many renters as possible with flexibility over their most significant recurring expense. After deliberately keeping a stealth profile as we built up unprecedented investor support and an enthusiastic user base, we are looking for motivated individuals to help us keep our mission growing. Will you be a part of the team?
# Overview
Flex is a growth-stage, NYC headquartered FinTech company that is creating the best rent payment experience. It’s hard to believe that it’s 2026 and paying rent on time is expensive, inflexible, and difficult. We’re here to change that! Flex enables our users to pay rent throughout the month on a schedule that better fits their finances and budget. Our mission is to empower as many renters as possible with flexibility over their most significant recurring expense. After deliberately keeping a stealth profile as we built up unprecedented investor support and an enthusiastic user base, we are looking for motivated individuals to help us keep our mission growing. Will you be a part of the team?
### About the Role
Flex is looking for a Staff Software Engineer to join our core platform team. We want engineers with ideas (because they’ll definitely be heard on our small and tight-knit team) and ambition! Successful devs will feel comfortable in a startup environment and will be happy to work in a remote-first team with a lot of independence. As a Staff Engineer at Flex, you’ll help set technical direction and shape the long-term architecture of our backend services while still being hands-on with coding and delivery. You will collaborate across engineering, product, design, and other stakeholders to ensure scalable, reliable, and impactful systems that power consumer experiences, partner integrations, and our core business platforms. You’ll also play a critical role in mentoring engineers, elevating technical standards, and ensuring the success of projects end-to-end.
Our Engineering Teams
### Life at Flex
We understand that it takes a diverse team of highly intelligent, curious, determined, empathetic, and self aware people to grow a successful company. Our HQ is located in New York City, but we have employees located throughout the US, Australia, Canada and South America. We are growing quickly, but deliberately, with a focus on building an inclusive culture. Our dynamic team has incredible perspectives to share, just as we know you do, and we take great pride in being an equal opportunity workplace.
Offices
Roles posted in New York, San Francisco, and Salt Lake City are hybrid positions with on-site expectations of 2-3 days per week in our local offices. For candidates outside of these areas, you may be eligible for our relocation assistance program.
Benefits
For full-time U.S. employees we offer: