Kotlin/Java Developer, Merchant Response

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🇺🇸 United States – Remote

⏰ Full Time

🟡 Mid-level

🟠 Senior

🔙 Backend Engineer

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Mayflower

WebsiteLinkedInAll Job Openings

501 - 1000 employees

🥽 AR/VR

🤖 Artificial Intelligence

📱 Media

AR/VR • Artificial Intelligence • Media

Mayflower is a technology company that builds global IT products to transform live entertainment and live-streaming experiences. The company develops in-house systems and platforms that combine AR/VR, machine learning, computer vision, and payment orchestration to increase engagement and perception for large-scale entertainment audiences. Mayflower emphasizes product quality, experimentation, and employee support, operating with full-cycle teams and a broad engineering stack.

📋 Description

• Developing new payment features and services; • Processing and resolving requests from technical support and users as part of daily duties; • Designing and implementing APIs (external and internal); • Creating and maintaining processes in Camunda; • Participating in the design and development of high-load system architectures; • Supporting and enhancing existing solutions and services; • Writing high-quality, test-covered code (unit tests, integration tests); • Conducting code reviews; • Optimizing system performance and database queries; • Analyzing and resolving production incidents and bugs; • Analyzing documentation from external providers, conducting quick checks, and defining epics and tasks based on Proof of Concept; • Collaborating with the QA team to ensure the high quality of the delivered product; • Maintaining technical documentation and writing technical specifications; • Assisting in onboarding new developers and ensuring code quality; • Definition and formation of technical epics — analyzing existing solutions, identifying opportunities to improve system architecture, performance, and reliability, preparing improvement proposals, and aligning them with the team lead and architect; • Participation in the creation of business epics — analyzing requirements, assessing feasibility, and proposing alternative or optimized solutions based on technical expertise; collaborating with analysts and product managers to determine the best implementation approach; • Preparing tasks based on approved epics, ensuring proper detailing and alignment with architectural and business requirements; • Estimating task completion timelines, participating in sprint planning, and providing accurate technical time and effort estimates.

🎯 Requirements

• 3+ years of commercial development experience with Kotlin; • Experience with the Spring Framework; • Experience in developing payment solutions (billing, payment gateways, payment processors, exchanges); • Practical experience integrating with external providers; • Experience designing and optimizing relational databases (MySQL); • Experience with NoSQL databases (Redis); • Practical experience using AI-assisted coding tools (Claude, Codex, ChatGPT, Codeium, etc.) to improve speed and quality of development; • Ability to critically review AI-generated code, ensuring production-ready quality and compliance with company standards; • Knowledge of Event-Driven Architecture principles and experience working with distributed messaging systems (e.g., Apache Kafka); • Excellent command of core software development and design principles, test-driven development (TDD), and CI/CD processes; • Strong understanding of microservice architecture. • Preferred Qualifications: • Experience with Camunda (creating and supporting processes); • Solid understanding of PCI DSS standards, ISO 27001, and other information security methodologies; • Practical experience working with AWS; • Experience with Jira and GitLab CI/CD.

🏖️ Benefits

• Full remote work. • Competitive compensation with a service contract. • Transparent performance reviews twice a year, with bonus opportunities and salary adjustments. • An annual allowance that you can use for home office improvements, sports activities, equipment upgrades, and more—tailor it to what benefits you most. • Investment in your development: paid language courses, access to various learning platforms, and a mindfulness benefit, including psychological support with 50% coverage. • Career growth in a fast-scaling project with opportunities to influence technical decisions. • A culture of recognition: our peer reward program celebrates contributions from across the team.