Backend Engineer at Nubit

Job Description

Key Responsibilities

• Design, implement, and maintain backend services and APIs using Java + Spring/Spring Boot.
• Optimize and refactor existing microservices to enhance performance, scalability, and maintainability.
• Collaborate with frontend, QA, DevOps, and product teams to deliver secure and reliable backend solutions.
• Ensure smooth integration between centralized systems and blockchain-related components (e.g., token metadata, wallet management, transaction references).
• Quickly troubleshoot and resolve backend issues to minimize impact on production systems.
• Participate in code reviews, enforce coding standards, and promote engineering best practices.

Job Requirements

• Proficiency in Java and Spring/Spring Boot (primary tech stack), with preference given to candidates experienced in Go, Rust, or similar backend languages.
• Deep understanding of microservices architecture, RESTful API design, and distributed systems.
• Strong database knowledge: relational databases (PostgreSQL, MySQL, Timescale) and schema design.
• Familiarity with blockchain fundamentals: addresses, tokens, transactions, and events.
• Strong problem-solving skills and ability to write clean, maintainable code.
• Excellent communication and teamwork abilities.
• [Senior Candidates] Minimum 3 years of backend development experience with Java microservices.

Preferred Qualifications

• Experience integrating with blockchain APIs (e.g., Ethereum RPC, Web3 providers).
• Familiarity with Docker, Kubernetes, and cloud-native deployments.
• Hands-on experience with CI/CD pipelines, automated testing, and observability tools.
• Knowledge of gRPC or event-driven systems (Kafka, Pulsar).
• Proficiency in English (reading, writing, speaking).
• Daily use of AI-assisted development tools to enhance productivity.

Benefits

• Opportunity to work on globally leading Web3 projects with a technology-driven, flat management structure.
• Highly competitive salary + additional performance-based incentives.
• Abundant technical growth opportunities: participation in top industry conferences and collaboration with elite development teams.
• Flexible work arrangements + remote work support + additional perks.