Senior Software Engineer

WTS builds the operational and technology backbone that powers modern fintech. We partner with product, engineering, compliance, and operations teams to launch and scale financial products-turning complex workflows (accounts, money movement, reconciliation, reporting, risk) into reliable platforms and tools.

We move fast, sweat the details, and build systems that are secure and built to last.

What it's like to work here

• High impact: Small teams, real responsibility, measurable outcomes
• Cross-functional: Frequent collaboration with engineering, ops, and business stakeholders
• Practical builders: We favor solutions that are simple, scalable, and easy to operate
• Mission-driven: We help bring better financial products to market-safely and efficiently

We are building something new and exciting. To help us build this, we are looking for experienced software developers to join a founding team of startup-minded individuals that will lay the groundwork for our new fintech offering.

This team will play a pivotal role in spearheading innovation. As such, you will have the opportunity to shape the early architecture and design of the product, and set the trajectory for its future direction. If you’re looking for a challenging and rewarding role where your decisions will make a profound impact on the product’s success - this team is for you.

Key responsibilities:

• Collaborate with cross-functional teams to design and implement robust, scalable software solutions.
• Lead the development of new modules and modify/maintain existing modules as needed, driving innovation and pushing the boundaries of what's possible.
• Architect and optimize systems for performance, reliability, and maintainability.
• Ensure seamless integration with external systems.
• Actively participate in code reviews, providing constructive feedback to enhance code quality.

Minimum qualifications:

• At least 5+ years of experience working with TypeScript/Node.js (backend/fullstack) and React.js/React Native (fullstack)
• Familiarity with AWS
• Experience building developer-facing/B2B APIs/SDKs
• Strong problem-solving abilities and attention to detail
• Excellent communication and collaboration skills

Preferred qualifications:

• Prior experience with Java/Kotlin and Swift/SwiftUI
• Worked at startups and/or fintech companies