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Senior Backend Engineer II

💼 Full-time🗓 2026-06-25

Core

Design and build scalable, reliable, and secure backend services for payment workflows, transaction processing, and integrations within the cannabis industry financial platform.

Role type

Senior Backend Engineer (Java/JVM)

Builds

Backend services, APIs, and integrations for a wholesale cannabis marketplace

Domain

Financial services / Cannabis industry

Deliverable

production ML models | product features | infrastructure

Required skills

Java, modern JVM frameworks, relational databases, distributed systems, event-driven architectures, Docker, Kubernetes, API design, system reliability, observability, code reviews

Preferred skills

Experience in regulated industries (financial services or cannabis)

Technologies

Java, JVM frameworks, Docker, Kubernetes, relational databases

Responsibilities

Design and build backend services supporting financial workflows and transaction processing; Collaborate with product and engineering teams to design scalable system solutions; Contribute to architectural discussions and evolve service-oriented systems; Write maintainable and well-tested code; Improve system reliability, performance, and observability; Build and maintain APIs used by internal services and external integrations; Refactor and modernize legacy systems; Troubleshoot production issues and implement long-term fixes; Participate in code reviews and advocate for strong engineering standards

Seniority

Senior, hands-on IC

Rewrite
## About the Role LeafLink is seeking a Senior Backend Engineer II to help build and evolve the systems that power our financial services platform, who is passionate about working with teams that solve interesting, large-scale problems at a rapid pace. This role contributes heavily to backend services responsible for payment workflows, transaction processing, and integrations across the cannabis industry. As LeafLink expands its platform capabilities, this role will design and implement scalable, reliable, and secure backend systems. Engineers in this role collaborate closely with product managers, engineering leadership, and teammates to deliver robust services that support our growing marketplace. ## Responsibilities - Design and build backend services supporting financial workflows and transaction processing. - Collaborate with product and engineering teams to design scalable system solutions. - Contribute to architectural discussions and evolve service-oriented systems. - Write maintainable and well-tested code using Java and modern JVM frameworks. - Improve system reliability, performance, and observability. - Build and maintain APIs used by internal services and external integrations. - Refactor and modernize legacy systems as the platform evolves. - Troubleshoot production issues and implement long-term fixes. - Participate in code reviews and advocate for strong engineering standards. ## Requirements - 5+ years of experience working as a backend engineer in a production environment. - Strong experience building backend services using Java and modern JVM frameworks. - Experience designing APIs and service-oriented systems. - Experience working with relational databases and large datasets. - Strong debugging and problem-solving skills. - Experience with distributed systems and event-driven architectures. - Familiarity with containerized environments such as Docker and Kubernetes. ## Nice to Have - Experience in regulated industries, such as financial services or cannabis, is a plus. ## What We Offer - Flexible PTO - you're going to be working hard so enjoy time off with no cap! - A robust stock option plan to give our employees a direct stake in LeafLink's success - 5 Days of Volunteer Time Off (VTO) - giving back is important to us and we want our employees to prioritize cultivating a better community - Competitive compensation and 401k match - Comprehensive health coverage (medical, dental, vision) - Commuter Benefits through our Flexible Spending Account ## About the Company LeafLink's employee-centric culture has earned us a coveted spot on BuiltInNYC's Best Places to Work for in 2021 list. Learn more about LeafLink's history and the path to our First Billion in Wholesale Cannabis Orders here.
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