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Salary
≈ $80k – $152k per year (Estimated)
Location
In office (Netherlands)
Seniority
Senior · 7+ years exp

Confirmed on the employer's own hiring board on Sep 28, 2026. First seen by Alion on Sep 27, 2026.

Overview
Company
Impact
Profile match
YO AI Labs is an artificial intelligence platform specializing in AI model training, evaluation, and data annotation services. Headquartered in San Francisco, California, United States, the company connects domain experts and remote specialists across the globe to review, test, and benchmark generative AI model outputs. Through its decentralized workforce solutions and structured evaluation workflows, it enables frontier technology developers to enhance the accuracy, safety, and reliability of next-generation artificial intelligence systems.

Job Description

Role : Senior Java Backend Developer

Location :Netherlands - North Holland

Domain : Information technology (IT)

Experience : 7 - 12 Years

Job Type : Hybrid (1 Year Contract)

Key Responsibilities:

  • Design, develop, test, and deploy scalable backend applications using Java and Spring Boot.
  • Build and maintain microservices-based architectures and RESTful APIs that serve high-volume traffic.
  • Develop cloud-native applications leveraging AWS services and best practices.
  • Design and optimize database solutions using NoSQL technologies, particularly DynamoDB.
  • Write clean, maintainable, and high-quality code while adhering to coding standards and architectural best practices.
  • Participate in code reviews, identify bugs, and provide constructive feedback to team members.
  • Debug complex issues, perform performance tuning, and optimize system efficiency across distributed environments.
  • Implement monitoring and observability solutions using Grafana and related tools to ensure system reliability.
  • Collaborate with cross-functional teams including product, QA, and DevOps to deliver reliable, secure, and scalable solutions.
  • Contribute to architecture discussions and support the development of large-scale, distributed applications.
  • Maintain comprehensive technical documentation and ensure adherence to SDLC processes.
  • Stay updated with industry trends and emerging technologies in backend development and cloud computing

Required Qualifications:

  • 6+ years of professional experience in Java Backend Development Strong proficiency in Java 8/11/17+ with deep understanding of OOP concepts and design patterns.
  • Hands-on expertise in Spring Boot and microservices architecture design and implementation.
  • Strong understanding of Data Structures & Algorithms (DSA) and proven problem-solving skills.
  • Demonstrated experience designing and developing REST APIs with proper error handling and validation
  • Hands-on experience with AWS services and cloud-native application development.
  • Strong experience with NoSQL databases, particularly DynamoDB, including schema design and optimization.
  • Proficiency with Git and version control best practices.
  • Proven experience working on large-scale, high-volume distributed systems.
  • Strong understanding of application scalability, resiliency, and performance optimization principles.
  • Experience with monitoring and observability tools such as Grafana.
  • Excellent debugging, analytical, and coding skills with attention to detail

Technical Environment:

  • Languages & Frameworks: Java 8/11/17+, Spring Boot, Spring Cloud.
  • Databases: DynamoDB, NoSQL databases.
  • Cloud Platform: AWS (EC2, S3, Lambda, RDS, etc.).
  • Tools & Technologies: Git, Grafana, Docker, Kubernetes (preferred).
  • Architecture: Microservices, RESTful APIs, Distributed Systems.
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