Senior Software Engineer

Stealth FinTech

172d

About The Position

We are on a mission to revolutionize B2B payments. We’re a well-funded, early-stage startup operating in stealth mode, building cutting-edge solutions that will transform the way businesses move money. If you’re excited about tackling big problems from the ground up, we want to hear from you. As we grow, we are looking for a Senior Software Engineer to join our Platform team and help build the core infrastructure that powers our payment solutions. You’ll work on challenging technical problems while contributing to the foundation of our technology stack.

Requirements

• 5+ years in software engineering, with demonstrated experience building scalable backend systems and APIs and leading projects.
• Understanding of commercial banking, payments processing, or fintech systems. Experience with financial data handling and compliance requirements preferred.
• Strong proficiency in Java, Spring framework, and containerization technologies like Kubernetes.
• Experience with microservices architecture and cloud platforms (AWS, GCP, or Azure).
• Experience designing and implementing distributed systems, with knowledge of database design, caching strategies, and message queues.
• Understanding of security best practices, especially in financial services contexts, including data encryption, secure API design, and compliance requirements.
• Strong proficiency with modern AI coding assistants (e.g., Claude Code, GitHub Copilot, or similar) and a proven ability to leverage them to enhance engineering speed, quality, and impact.
• Ability to debug complex issues, optimize performance, and architect solutions for high-scale systems.
• Strong written and verbal communication skills, with the ability to work effectively in a fast-paced, cross-functional environment.

Nice To Haves

• Experience with real-time payment systems or high-frequency transaction processing.
• Knowledge of banking APIs, SWIFT messaging, or ACH processing.
• Experience with event-driven architectures and stream processing.
• Familiarity with enterprise DevOps practices and infrastructure as code.

Responsibilities

• Design and implement core platform services, APIs, and infrastructure that support our banking integrations and payment processing systems.
• Build and maintain secure, scalable integrations with major financial institutions and payment networks.
• Write clean, maintainable, and well-tested code while contributing to architectural decisions and technical standards.
• Ensure high availability and performance of platform services, implementing monitoring, alerting, and error handling best practices.
• Work closely with Product, QA, and other Engineering teams to deliver features that meet business requirements and user needs.
• Identify opportunities to improve system performance, developer experience, and engineering processes.

Benefits

• Build Foundational Technology: Work on core platform services that will scale to handle millions of transactions and shape the future of B2B payments.
• Technical Growth: Tackle complex engineering challenges while working with cutting-edge technologies in the fintech space.
• Collaborate with Excellence: Work alongside experienced engineers from SAP and fintech innovators who value technical craftsmanship.
• Early-Stage Impact: Your code and architectural decisions will have direct impact on our product and company trajectory.
• Learning & Development: Gain deep expertise in financial technology, distributed systems, and high-scale platform engineering.

What This Job Offers

• Career Level: Senior