Senior Backend Engineer

Harvey Nash Technology; United States; Remote; USD 120,000 - 160,000; Full time

Job summary

Harvey Nash Technology is seeking a Senior Backend Engineer (Kotlin/Java) to join a compact, product-focused team working on a high-traffic mobile app backend. This role emphasizes end-to-end ownership of services, from development to monitoring, with a focus on scalability, reliability, and performance.

You'll work with AI-driven features, contribute to architectural decisions, and collaborate with a small team of about six engineers. Remote work is supported.

Qualifications

• Production-grade JVM backend experience in Kotlin or Java.
• Strong problem-solving, analytical and architectural thinking.
• Practical experience using AI in software development or AI-enabled features.
• Curiosity about emerging AI technologies and willingness to experiment.
• Experience in fast-paced product environments and end-to-end ownership of services.
• Strong English communication skills.

Responsibilities

• Build and maintain backend services for a high-traffic mobile app (chat, memory, personalization).
• Work on AI-powered assistants supporting purchasing journey and pre-purchase experience.
• Develop new features and extend functionality for additional business use cases.
• Improve and harden components for scalability, reliability and performance.
• Take end-to-end ownership of services: development, maintenance, monitoring and operational excellence.
• Take part in architectural and technical decisions in a small team of about 6 engineers.
• Use AI tools daily and evolve AI-driven user experiences.

Skills

Backend engineering

Kotlin

Java

JVM ecosystem

Architectural thinking

Problem solving

AI in development

English communication

Tools

Prometheus

Grafana

Job description

Senior Backend Engineer (Kotlin / Java) | Remote |

You will:

• Build and maintain backend services behind a high-traffic mobile application, covering chat communication, memory capabilities and user personalization
• Work on AI-powered assistants that support the purchasing journey and the pre-purchase experience
• Develop new product features and extend existing functionality to cover additional business use cases
• Improve and harden existing components, with a focus on scalability, reliability and performance
• Take end-to-end ownership of your services: development, maintenance, monitoring and operational excellence
• Take part in architectural and technical decisions, as part of a small team (about 6 engineers) with a product-oriented, high-ownership culture
• Use AI tools in your daily engineering work and help evolve AI-driven user experiences

You bring:

• Strong backend engineering experience in the JVM ecosystem (Kotlin or Java) and a track record of building production-grade systems
• Excellent problem-solving and analytical skills, and strong architectural thinking
• Practical experience using AI in software development or building AI-enabled features (please make it visible on your CV)
• Curiosity about emerging AI technologies and willingness to experiment with them
• Experience in fast-paced product environments and comfort taking ownership of services end to end
• Strong English communication skills

Nice to have:

• Experience with high-scale distributed systems
• Observability and monitoring tools (Prometheus, Grafana)
• Kotlin (Java developers who are open to learning Kotlin are welcome)