• As a back-end engineer at Dimensional, you will have the opportunity to understand the users’ needs and solve problems like complex calculation engines in an ETL pipeline, database design, API and microservice design and engineering. • Collaborate with subject matter experts in a variety of areas to drive the success of our clients. • Collaborate with front-end engineers on the design of solutions and APIs. • Perform software and data architecture and design. • Develop complex software solutions using back-end technologies. • Demonstrate and mentor software engineering best practices and participate in code reviews. • Develop configurations and automations to enable testing, infrastructure and deployments.

Role Description We are hiring Senior Backend Software Engineers (Node.js) to build scalable backend services powering an AI-driven research tool used by scientists, clinicians, and analysts worldwide. You will contribute to an AI-powered research platform that helps users rapidly locate, compare, and summarize evidence from peer-reviewed scientific literature. The system provides citations, direct links to sources, and supports workflows such as study comparison, evidence synthesis, and drafting research summaries. This is a backend-focused engineering role, with occasional frontend contributions. You will design and implement scalable services, APIs, and integrations, ensuring reliability, performance, and clean engineering practices. We’re looking for senior engineers with: - 8+ years of experience - Strong Node.js expertise - A solid understanding of algorithms and system design - Hands-on experience building production-grade systems Contract & Working Model: - Flexible collaboration model: employment (CIM) or B2B - Location: Romania — remote or hybrid from Cluj / Iași If you’re a senior backend engineer passionate about building scalable systems and contributing to AI-powered scientific tools, send your profile and let’s talk. Responsibilities - Build and maintain backend services and APIs - Design and implement REST and/or GraphQL APIs - Develop business logic and system integrations - Ensure scalability, reliability, and performance of backend components - Collaborate with frontend teams to support end-to-end delivery - Write clean, testable, maintainable code - Participate in system design, architecture discussions, and Agile ceremonies Requirements - 8+ years of professional software engineering experience - Bachelor’s degree in Computer Science, Engineering, or equivalent - Strong foundation in algorithms, data structures, and core programming concepts - Strong expertise in Node.js - Proficiency with TypeScript / modern JavaScript - Experience designing RESTful APIs and/or GraphQL APIs - Data modeling experience (SQL / NoSQL) - Understanding of authentication and authorization concepts - Experience working with production-grade systems - Knowledge of scalability, reliability, and performance best practices - Experience with unit and integration testing - Familiarity with Git and Agile workflows Nice to Have - Experience with observability (logging, monitoring, tracing) - Exposure to distributed systems - Awareness of frontend systems (React, API consumption patterns) - Experience with CI/CD pipelines and DevOps workflows - Exposure to AI / LLM integrations

• Maintain and support existing Magento-based eCommerce websites • Troubleshoot, investigate, and resolve issues in production and staging environments • Analyze and fix bugs in PHP code and database queries • Implement minor enhancements and improvements to existing functionality • Monitor application performance and proactively identify optimization opportunities • Support integrations with third-party APIs, payment gateways, and shipping services • Ensure system stability, reliability, and high availability • Collaborate with cross-functional teams to address issues and deliver continuous improvements

• Develop, support, and continuously improve cloud-based IVR applications • Work with project teams, third-party suppliers, internal IT teams, and business partners • Design, develop, and maintain IVR applications based on business and technical requirements • Integrate IVR solutions with key internal services • Monitor IVR systems and implement operational improvements to enhance customer experience • Troubleshoot and resolve issues within the voice contact center and IVR environments • Collaborate with project managers to ensure timely and high-quality delivery of solutions • Participate in forward-looking initiatives to improve call steering and IVR architecture • Communicate technical concepts clearly to both technical and non-technical stakeholders