Full Stack Engineer (Internal Tools & Payments)

Join Zepz: Breaking Down Borders, Together

We look for mission-driven builders who thrive in a fast-paced environment connected to a true purpose. We’re an always developing team of experts that enjoy problem solving and bring clarity to tough challenges. At Zepz, we are Relentless Learners, always seeking feedback, and  Responsible Owners, treating company resources like your own. We depend on Transparent Communicators who keep the team aligned through open, honest talk.

• Integrity: We always do the right thing. It’s simple, but it’s the foundation of everything we build for our customers and each other.
• Outcomes: We work for our customers. Their success and prosperity are the results we focus on delivering.
• Velocity: We are fast! We maintain high energy levels and make smart decisions quickly, keeping us nimble and ahead of the curve.

Our Engineering team is growing! We are looking for a versatile Full Stack Engineer who loves building robust systems and seeing them come to life through functional, high-impact user interfaces.

As part of the Payments Team, you’ll build the “Mission Control” that powers our global money movement. You will bridge the gap between complex backend logic (Java/Python) and real-world results using JavaScript and Retool. This is the perfect role for an engineer who wants to own problems end-to-end: from the database to the UI that catches a payment anomaly and empowers our operations teams to move faster.

• Build the "Control Center": Use Retool and JavaScript to create powerful internal tools and dashboards that turn complex data into actionable workflows for operators worldwide.

• Power the Platform: Contribute to and maintain the APIs and backend logic (Java/Python) that drive transaction lifecycles.

• Architect Data Flow: Partner with peers to ensure data moves securely and efficiently from core services to our internal interfaces, maintaining high standards for data integrity and speed.

• Embrace Modern Dev: Leverage agentic development and pragmatic tools to accelerate how we build, iterate, and automate complex payment workflows.

• Solve Real Problems: Troubleshoot system bottlenecks and build smarter tools that help our teams catch issues and move payments faster.

• A "User-First" Mindset: You are passionate about building experiences that solve real-world headaches for your colleagues and customers.

• Full Stack Curiosity: Whether your "home base" is Java/SQL or JavaScript/UI, you aren't afraid to dive into the other side of the stack to get a feature across the finish line.

• Pragmatism: You believe "Done is Better than Perfect." You know when to write a perfect abstraction and when to use Retool to ship a working tool today.

• Systems Thinking: You don’t just "map data"; you want to understand the business logic of how money moves and how to handle it gracefully when things go wrong.

• Collaborative Spirit: You enjoy talking through ideas with Product Managers and Ops teams to find the best path forward.

• FinTech Experience: You’ve worked in environments where data integrity is mission-critical.

• Tooling Expertise: Experience with Retool or building internal-facing applications.

• Deep Data: An interest in Postgres or experience with data schemas.

If you want to join us in our journey to help break barriers in financial access and improve lives globally, there's no better place or time to join.

Our global team of 800+ people is spread across six continents. We aspire to hire the best mix of people from former Olympians to YouTube influencers and we speak over twenty languages. This incredible diversity isn't a bonus; it's the engine that lets us serve the world.