Senior Software Engineer, Backend

About the role

We are looking for a Senior Software Engineer, Backend to join our team and help build the backend of Payabli's interfaces and integrations that sit between complex financial infrastructure and the humans who use it every day – merchant dashboards, onboarding flow, embeddable components, and white-label experiences consumed by our platform partners and their end users.

Responsibilities

• Design, build, and maintain scalable backend services using C# and .NET.
• Develop the core infrastructure that powers payment routing, connector management, and platform configuration.
• Design secure, extensible APIs that support both customer-facing applications, direct integrations and AI-powered workflows.
• Build reliable, observable services that process high-volume payment transactions with performance and resilience in mind.
• Contribute to platform architecture, engineering standards, and technical decision-making.
• Continuously improve system performance, security, reliability, and developer experience.
• Collaborate closely with other service owning teams to integrate via APIs and real-time data streams, ensuring seamless data flow across the stack & overall platform.
• Raise the bar: Lead code reviews, champion backend standards, and drive architectural decisions that keep the codebase healthy as we scale.
• Multiply the team: Mentor engineers around you and elevate backend engineering quality across the organization through pairing, documentation and leading by example.
• Owning the full lifecycle: Work across requirements, implementation, testing, and deployment. We don't throw things over the wall here.
• Sweat the details: Optimize for performance, accessibility, and cross-browser compatibility.

Requirements

• 5+ years of experience building production backend services.
• Strong experience with C# and the .NET ecosystem.
• Strong experience in Payments, FinTech, or other high-volume transaction processing environments.
• Experience designing and building RESTful and/or event-driven APIs.
• Strong understanding of relational databases, data modelling, and distributed systems.
• Experience building secure, scalable cloud-based applications.
• Excellent problem-solving, communication, and collaboration skills.
• Ability to provide technical leadership while remaining hands-on in development.

Qualifications

• Experience with AI-driven intelligence and its application in payment operations.
• Knowledge of PCI DSS 4.0 and SOC 2 compliance.
• Experience with microservices architecture and containerization technologies like Docker and Kubernetes.
• Experience with monitoring and logging tools such as Prometheus, Grafana, ELK Stack, etc.
• Experience with CI/CD pipelines and automation tools like Jenkins, GitLab CI, etc.

Skills

• Proficiency in C# and .NET framework.
• Experience with SQL databases and NoSQL databases like MongoDB.
• Experience with RESTful APIs and SOAP web services.
• Experience with distributed systems and microservices architecture.
• Experience with DevOps practices and tools.
• Experience with AWS, Azure, or Google Cloud.

Benefits

• Competitive salary.
• Stock options with the potential to unlock more equity as we grow.
• Flexible PTO and paid parental leave.
• Medical, dental, & vision insurance.
• 401K, HSA, pre-tax savings programs.

Pay

Competitive salary.

Schedule

Full-time.