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Coherent Solutions Logo Coherent Solutions · IT - Software Development

Backend Developer (Java + Node.js)

Poland · Job Posted April 24, 2026
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Job Description

The project is a greenfield initiative in the mortgage domain focused on building a modern, scalable platform that integrates AI-driven decision-making, high-throughput data processing, and robust backend services. The system will manage end-to-end workflows related to loan processing and customer engagement, integrating with both internal and external APIs. The goal is to enable efficient, real-time processing of lead data, AI-powered enrichment, and seamless communication across services through a highly observable and maintainable architecture.

Job Responsibility

  • Design, develop, and maintain backend services using Java 17+ and Spring Boot 3.5
  • Build and maintain microservices that support core loan processing features
  • Integrate with internal and third-party REST APIs, including AI tools for lead scoring, enrichment, and matching
  • Implement data validation, normalization, and enrichment processes
  • Ensure service reliability and observability through structured logging, metrics, and tracing
  • Collaborate closely with architects, DevOps, and data engineering teams on backend architecture and system integration
  • Support CI/CD pipelines and infrastructure automation using Docker, Kubernetes, and Terraform
  • Participate in code reviews, sprint planning, retrospectives, and technical discussions

Requirements

  • 3+ years of experience as a Java Developer
  • Proficiency in Java 17+ and Spring Boot
  • Experience with Node.js
  • Hands-on experience with PostgreSQL and/or NoSQL databases (e.g., Firestore)
  • Experience with message brokers such as Kafka or RabbitMQ
  • Understanding of RESTful API design and API integration best practices
  • Familiarity with CI/CD practices, containerization, and infrastructure-as-code
  • English proficiency at B1+ level or higher (spoken and written)
  • Strong communication skills, collaborative mindset, and willingness to work in an Agile team environment

What we offer

  • Technical and non-technical training for professional and personal growth
  • Internal conferences and meetups to learn from industry experts
  • Support and mentorship from an experienced employee to help you professional grow and development
  • Health insurance
  • English courses
  • Sports activities to promote a healthy lifestyle
  • Flexible work options, including remote and hybrid opportunities
  • Referral program for bringing in new talent
  • Work anniversary program and additional vacation days
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