Senior Java Backend Engineer – Cloud SaaS, AI‑Assisted

Daon, Inc.; Dublin; Hybrid; EUR 80,000 - 110,000; Full time

Benefits offered by this job

Hybrid work model

Competitive salary

Job summary

Daon is seeking a Senior Java Developer to design, build, and improve cloud‑based backend services powering TrustX identity verification and authentication. You will collaborate with frontend, DevOps, architects, and QA to deliver reliable software, using AI tools to accelerate coding and improve quality.

This role emphasizes end‑to‑end system understanding and scalable, secure solutions. We value engineers who balance performance, maintainability, and product needs, and who will help shape best

Qualifications

• 5+ years of experience developing backend or full-stack software, ideally in SaaS environments.
• Strong proficiency in Java, with experience in Spring Boot, Spring MVC, Hibernate.
• Ability to understand end-to-end system design, data flows, integration points.
• Experience with cloud platforms (AWS preferred) and containerization (Docker, Kubernetes).
• Hands-on experience with Git, build tools (Maven/Gradle), CI/CD pipelines.
• Growth mindset and openness to AI-assisted development tools.
• Exposure to observability tools (logs, metrics, traces) and performance debugging.
• Strong communication and collaboration skills across cross-functional teams.
• Degree in Computer Science/Engineering or equivalent real-world experience.

Responsibilities

• Design, develop, and maintain backend services built primarily with Java and Spring Boot.
• Implement REST APIs, service integrations, data processing pipelines, and backend logic supporting our core platform capabilities.
• Write maintainable, testable, and well‑structured code using modern engineering practices.
• Collaborate with frontend, mobile, DevOps, architects, and QA to ensure features are delivered holistically and integrate smoothly across the platform.
• Understand how backend components interact with UIs, cloud infrastructure, data stores, and external systems.
• Participate in design discussions and provide input on architecture, system behavior, performance trade‑offs, and scaling strategies.
• Use GitHub Copilot and other AI tools to accelerate development, improve code quality, and automate repetitive tasks.
• Help establish best practices for responsible, high‑value AI use within the engineering team.
• Participate in experimentation and adoption of new AI‑based development workflows.
• Write and maintain unit tests, integration tests, and automated test scenarios in collaboration with QA.
• Profile and optimize services for performance, throughput, and scalability.
• Contribute to improving observability (metrics, logs, tracing) in coordination with DevOps.
• Participate in code reviews and provide constructive feedback to peers.
• Collaborate with service delivery managers to ensure smooth deployment and production behavior.
• Support occasional troubleshooting efforts for complex defects or production issues.

Skills

Java

Spring Boot

Spring MVC

Hibernate

Cloud platforms (AWS)

Docker

Kubernetes

CI/CD

Git

AI-assisted development

Observability

Education

Bachelor's degree in Computer Science/Engineering

Tools

Docker

Kubernetes

Maven

Gradle

CI/CD pipelines

Job description

Daon is seeking a Senior Java Developer to design, build, and improve cloud‑based backend services powering TrustX identity verification and authentication. You will collaborate with frontend, DevOps, architects, and QA to deliver reliable software, using AI tools to accelerate coding and improve quality.

This role emphasizes end‑to‑end system understanding and scalable, secure solutions. We value engineers who balance performance, maintainability, and product needs, and who will help shape best