Senior Java Backend Engineer

About the Position

We are looking for an experienced Senior Java Backend Engineer to contribute to the development of a large-scale e-commerce platform with high traffic, a modern microservices architecture, and high-volume data processing. In this role, you will be responsible for building scalable backend services, integrating with external systems, optimizing application performance, and contributing to architecture and system design decisions. You will play a key role in designing distributed systems, integrating external platforms, optimizing performance, and driving engineering best practices across the backend ecosystem.

Responsibilities

• Design, develop, and maintain scalable backend services supporting a high-volume e-commerce platform.
• Participate in architecture and system design decisions to ensure scalability, reliability, maintainability, and performance.
• Develop high-performance REST APIs and distributed services within a microservices ecosystem.
• Build and maintain integrations with suppliers, marketplaces, logistics providers, and other external systems.
• Design and implement event-driven workflows using Kafka and asynchronous messaging patterns.
• Optimize application performance, database access, and backend processing for high-traffic environments.
• Design efficient data models and contribute to database optimization strategies across relational and NoSQL technologies.
• Collaborate with DevOps teams to deploy and operate services in AWS-based cloud environments using Kubernetes and CI/CD pipelines.
• Participate in production incident investigations, root cause analysis, and continuous platform improvements.
• Write clean, maintainable, and well-tested code while promoting engineering best practices and coding standards.
• Perform code reviews and provide technical guidance and mentorship to other engineers.
• Collaborate closely with Product Owners, Solution Architects, and business stakeholders to understand business objectives and translate them into scalable technical solutions.
• Document technical designs, APIs, integration flows, and architectural decisions.
• Evaluate new technologies, identify opportunities for platform improvements, and contribute to the long-term technical evolution of the platform.
• Promote AI-assisted development practices by reviewing, validating, and refining AI-generated code while ensuring security, performance, and maintainability standards are met.

Requirements

• 5+ years of experience building and operating production backend systems, including distributed services at scale, with strong expertise in Java (our primary language), Spring Boot, and other JVM-based technologies.
• Solid understanding of distributed systems, concurrency, software design patterns, and backend engineering fundamentals.
• Ability to think beyond implementation details and translate business requirements into scalable technical solutions with a consultant mindset.
• Experience designing and developing scalable backend services and microservices-based architectures.
• Experience building and maintaining REST APIs and integrating with external systems.
• Hands-on experience with event-driven architectures, messaging systems (e.g. Kafka), or high-volume data pipelines.
• Experience working with relational databases and NoSQL databases such as MongoDB, with a good understanding of data modeling and performance optimization.
• Familiarity with cloud platforms such as AWS (including EKS) and containerization technologies like Docker and Kubernetes.
• Good understanding of modern software engineering practices, including CI/CD, code reviews, automated testing, and Agile development.
• Passion for leveraging AI-assisted development tools, such as Claude AI, to accelerate software delivery while maintaining high engineering standards.
• Fluent English communication skills, with the ability to collaborate effectively with business stakeholders and lead technical discussions with external partners.
• Experience with high-volume e-commerce platforms or other large-scale distributed systems.
• Experience working with event-driven sagas or complex asynchronous workflows.
• Experience mentoring engineers and contributing to architecture and technical design discussions.

We Offer

• Relocation package
• Job rotation
• Learning through Arnia Academy
• Attractive projects
• Flexible working hours
• Performance bonuses
• Medical benefits
• Trainings
• Competitive compensation package
• Referral program
• International work experience

About the Company

[Company description if present]