Senior Staff Backend Engineer (Kotlin)

Senior Staff Backend Engineer

Company

Blackbird Labs, Inc.

Conditions

6 days agoLeadSalary: 180K - 220KNew York, USA Onsite Full Time Backend Jobs by Blackbird Labs, Inc.

Blackbird Labs, Inc. Blackbird Labs operates Blackbird, a restaurant loyalty and payments app. Diners tap in and pay at participating restaurants to earn and spend $FLY rewards, while restaurant partners participate in its dining network. Series B Company intelligence Distributed Funding history Series B ($50M) Series B ($50M) Series A ($24M) Investors a16z crypto QED Investors Union Square Ventures (USV) Andreessen Horowitz (a16z crypto) InterActiveCorp (IAC) About Blackbird Labs, Inc. Blackbird Labs operates a dining loyalty and payments platform for restaurant lovers and participating restaurants. Through the Blackbird app, diners can tap in at restaurants, pay with Blackbird, earn $FLY rewards, use a non-custodial Blackbird wallet, and access Blackbird Club benefits such as higher reward rates, priority reservations, and events. The company serves restaurant diners and restaurant partners across its supported markets. View jobs by Blackbird Labs, Inc.

Skills

Ach Api Aws Blockchain Cryptography Domain Driven Design Generative Ai Hibernate Jvm Kotlin Mentoring Payments Performance Tuning Rest Schema Design Spring Sql Terraform

Candidate Availability

New York · Required Onsite · Required Required and preferred rules are kept separate and reflect the wording in the original posting.

About the Role

You design, build, and maintain core backend APIs for payments and loyalty platforms. You collaborate with product, design, and engineering stakeholders, contribute to scalable architecture, promote backend best practices, mentor engineers, and help shape implementation decisions.

Requirements

• 5+ years of experience building and deploying backend APIs
• Kotlin or another statically typed JVM language
• RESTful API design and maintenance
• Domain-driven design
• SQL databases
• Schema design
• Database performance tuning
• Attention to detail
• Autonomous decision-making
• Engineer mentoring
• Cross-functional collaboration
• Spring framework
• Hibernate
• U.S. payments ecosystem
• AWS
• Terraform
• Blockchain
• Cryptography
• Generative AI

Responsibilities

• Design, build, and maintain core backend APIs
• Collaborate with product, design, and engineering peers to deliver features
• Contribute to system architecture and implement scalable solutions
• Promote backend best practices focused on code quality, testing, and performance
• Mentor junior and mid-level engineers
• Participate in product and design discussions

Benefits

• Stock options
• Medical insurance
• Dental insurance
• Vision insurance
• Flexible time off
• 401(k)

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