Senior Backend Engineer II

LeafLink is the largest unified B2B cannabis platform, providing licensed cannabis businesses a suite of tools to manage their business more effectively, sell or order from their favorite brands and accelerate growth. We are one platform, one solution and we’re defining the way thousands of cannabis brands, distributors, and retailers streamline their operations. With thousands of brands and retailers across 30+ markets in North America, we are setting the industry standard for how cannabis businesses grow together. LeafLink processes more than $5 billion in wholesale cannabis orders annually.

Our team, backed by funding from leading VC's, including Founders Fund, Thrive Capital, Nosara Capital, and Lerer Hippeau is poised to define the cannabis supply chain through technology.  LeafLink was named one of Inc. 5000’s ‘Top 5000 Fastest-Growing Private Companies’; one of Fast Company's 'Top 10 Most Innovative Companies in Enterprise for 2020', joining the ranks of Amazon, Slack, and VMWare; one of Built In NYC's 'Best Places to Work in 2021'; 2024 Fast Company’s Best WorkPlaces for Innovators for Banking, Finance, and Fintech category; 2024 Green Market Report Award for Best Fintech in cannabis - and we're just getting started!

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.

• →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.

• 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.
• Experience in regulated industries, such as financial services or cannabis, is a plus.