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Kotlin/Java Developer (Integration)

Mayflower
Contract type
Ongoing
Work mode
100% remote
Experience
Mid-level · 3+ years

Job description

Key details

  • Developing new payment integrations and services
  • Automating and optimizing integration processes
  • Analyzing external provider documentation, conducting rapid checks, and defining epics and tasks based on Proof of Concept
  • Participating in the design and development of high-load system architectures
  • Supporting and improving 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
  • Processing and resolving requests from technical support and users as part of daily duties
  • Collaborating with the QA team to ensure the high quality of delivered products
  • Using AI-tools to accelerate delivery of integration modules and creating internal tools to generate integration code from business requirements
  • 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
  • Company mission
  • Information not specified

Primary stack

Core technologies

JavaAWSKotlin

Benefits

  • Information not specified

Requirements & details

  • 3+ years of commercial development experience with Kotlin (Java will be a plus)
  • Experience working with the Spring Framework
  • Experience developing and integrating payment solutions (billing, payment gateways, and payment processors)
  • Practical experience integrating with external payment providers
  • Experience designing and optimizing relational databases (MySQL)
  • Experience with NoSQL databases (Redis)
  • Practical experience using AI-assisted coding tools (Copilot, 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 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
  • Solid understanding of microservice architecture
  • English proficiency level B1 or higher
  • 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
  • Kotlin, Java, Spring Framework, MySQL, Redis, Apache Kafka, AWS, Jira, GitLab CI/CD, Camunda, AI-assisted coding tools (Copilot, ChatGPT, Codeium)
  • Kotlin
  • Java
  • AWS

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