Top Senior Level Java Developer Jobs in Denver & Boulder, CO

Seeking a Senior Software Engineer with Java expertise to lead the design, development, and maintenance of APIs for web and mobile applications. Responsibilities include system design, development, integration, performance optimization, documentation, testing, monitoring, versioning, security implementation, and mentorship. Bachelor's degree in Computer Science or related field and 5+ years of API experience required.

Designs, develops, and maintains software solutions for BillGO's Bill Pay products. Collaborates with cross-functional teams to deliver features and improvements. Responsible for code design, implementation, maintenance, and monitoring. Stays updated on latest technologies and proposes process improvements. Ensures compliance with regulatory requirements and industry standards. Mentors junior developers and new team members.

The Square International Android team is seeking an Android Engineer with 5+ years of experience to work on building product features for non-US markets. Responsibilities include collaborating with cross-functional teams, defining product scope, and ensuring high-quality project delivery. Proficiency in Android development, Java, and Kotlin is required.

Square is looking for an Android Engineer to work on building pixel-perfect product experiences for international sellers. Responsibilities include collaborating with iOS and server engineers, working with product managers and designers, and ensuring the successful delivery of projects with a focus on quality over quantity. The team is responsible for developing market-specific features for international markets. Must have 5+ years of industry experience, proficiency in Java and Kotlin, and a passion for building mission-critical products.