At Coinme, we're redefining access to financial services in a digital world.
By combining the cutting-edge power of blockchain technology with everyday simplicity, we make digital currencies accessible and usable for all.As the world's largest network of cryptocurrency kiosks with over 40,000 locations nationwide, we're breaking down barriers to crypto adoption through our seamless mobile app, secure digital wallet, and DeFi integrations.
Beyond our consumer offerings, we're also the infrastructure powering the crypto revolution for businesses.Through our enterprise Crypto-as-a-Service (CaaS) platform, we enable businesses to launch crypto capabilities in weeks, not months.
Our modular, API-first infrastructure provides everything from KYC and payment processing to liquidity and custody solutions—all fully licensed and compliant.We're big enough to lead the charge in decentralized finance but small enough that your ideas will make waves.
Every role at Coinme contributes to building a financial future where everyone has the tools to thrive.
At Coinme, your growth fuels our mission.
Together, we RISE.Position Description:As a Senior Software Engineer, your mission will be to enable Coinme and customers to manage their flow of funds by designing and developing scalable software solutions for handling crypto custody and blockchain transactions.
You will accomplish this by working alongside your engineering team to build software and integrations for accepting, disseminating, and liquidating funds needed to fulfill customer transactions, including capabilities to custody, send and receive crypto funds.Responsibilities:Design solutions for complex technical and business problemsDevelop software systems and components for our rapidly growing businessWrite performant, maintainable code while iterating and shipping rapidlyWork within our backend architecture and technology stack based on:Java 17 or higher with Project Reactor (Reactive Java)Spring BootCommand and Query Responsibility Separation (CQRS) architecture and Event Sourcing (ES)Full microservice environmentRESTful APIs for synchronous flowsEvent-driven design (powered by CQRS and ES) for async flowsWebhooks and Server-sent eventsAxon Framework for intra-domain event-driven designKafka for inter-domain event-driven designKubernetes, Helm charts, Argo platformMySQL DBMongo DBAWS solutions (EC2, RDS, etc.)Author and maintain unit and integration testsWork with your Scrum team to plan sprints and delivery of featuresDrive engineering excellence, operational stability and security into all layers of the platformParticipate in design and architecture discussions and planningDrive the execution and delivery of features by collaborating with cross functional stakeholdersWork with Engineering Leadership to drive best practices in software development, testing, and production operationsMentor other engineers, helping them grow in their careersContribute to recruiting efforts to continue to build your teamQualifications:Bachelor's degree in Computer Science, Software Engineering, or equivalent experience5+ years of experience as a software developerExperience building scalable services and distributed systems in Java or similar object-oriented languageExperience driving technical designs within a teamExperience writing code that is readable, scalable, and instrumentedExperience working in a fast-paced Agile development environmentExperience in communicating with users, other technical teams, and product to understand requirements, describe software product features and technical designsPassion for cryptocurrency and blockchain technologyGood understanding of blockchain technology, including cryptocurrency protocol knowledge with hands-on experience integrating multiple blockchain networks (Bitcoin, Ethereum, etc).
Must understand UTXO vs account-based models, transaction lifecycle management, and gas optimization strategiesFireblocks (or similar custody provider) API integration experience with REST and webhook APIs for transaction management, vault operations, and policy engine configuration.
Must understand callback mechanisms and transaction status workflowsRequired technology skillsJava & Spring Boot expertiseExperience with a microservice environmentKafka, RabbitMQ, ActiveMQ or similar techRESTful APIs for synchronous flowsMySQL DBMongo DB or similar NoSql databaseExperience with Kubernetes or any cloud development platformsNot Required, But Nice to Have:Experience working in the financial services industryExperience or working knowledge of CQRS architecture and Event Sourcing conceptsExperience with Event-driven designReactive Java, Project ReactorWebhooks, Server-sent events, Websocket or any async notification technologyAxon FrameworkExperience with AWS solutionsThis is a fully remote position.
Must be willing to work some overlap between EST.
English is our global team's common language, so strong verbal and written communication skills in English are required.