Senior Engineer (Lessn)
Core
Build production systems for a B2B payments orchestration platform and contribute to an agentic AI/ML decision engine that optimizes invoice payments using open banking data.
Role type
Senior Software Engineer (Payments & AI/ML)
Builds
Payments orchestration platform, AI/ML decision engine, accounting integrations (Xero, MYOB)
Domain
Fintech / B2B Payments / Open Banking
Deliverable
production ML models | product features
Required skills
Python, strongly typed languages (C#, Java, C++), cloud infrastructure (AWS/Azure/GCP), infrastructure-as-code, containerization, CI/CD, automated testing, mentoring
Preferred skills
Fintech/Payments experience, AI/ML engineering exposure, startup/scaleup experience
Technologies
Python, C#, Java, C++, AWS, Azure, GCP, Xero, MYOB
Responsibilities
Design and deploy production software for payment rails and integrations; contribute to the AI/ML decision engine; implement engineering practices (CI/CD, IaC); mentor graduate engineers; ensure quality in a regulated environment
Seniority
Senior, hands-on IC with mentorship responsibilities
