Senior/Staff Backend Engineer

Responsibilities

• Design, build, and maintain core backend APIs
• Collaborate with product, design, and engineering peers to deliver features aligned with business goals
• Contribute to system architecture and implement scalable, robust solutions
• Uphold and promote backend best practices, with a focus on code quality, testing, and performance
• Mentor junior and mid-level engineers and foster a collaborative, growth-oriented team culture
• Participate in product and design discussions, offering backend perspectives on implementation and feasibility

Requirements

• 5+ years of experience building and deploying backend APIs
• Strong proficiency in Kotlin or another statically typed JVM language
• Deep experience designing and maintaining RESTful APIs using domain-driven design principles
• Solid understanding of SQL databases, including schema design and performance tuning
• Strong attention to detail and commitment to delivering high-quality user experiences
• Able to work autonomously and make sound decisions in a fast-moving environment
• Experience mentoring engineers and contributing positively to team culture
• Comfortable working cross-functionally with product, design, and other stakeholders

Nice to Haves

• Experience with the Spring framework and database abstraction layers such as Hibernate
• Familiarity with the U.S. payments ecosystem, including debit, credit, and ACH processing
• Experience with DevOps practices, including AWS infrastructure and Terraform
• Exposure to blockchain, especially with cryptography fundamentals
• Experience productionizing generative AI features (e.g. retrieval-augmented generation, prompt engineering, or model integration)