> Markdown version of [/jobs/ext/2213456-fullstack-nodejs-developer](https://www.wearedevelopers.com/jobs/ext/2213456-fullstack-nodejs-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Fullstack NodeJS Developer - **Company:** Amaris - **Location:** Belgium - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Query Performance, Artificial Intelligence, Amazon Web Services, Microsoft Azure, Cloud Computing, Code Review, Databases, Concurrency Controls, Continuous Integration, Distributed Systems, Elasticsearch, PostgreSQL, MongoDB, Node.Js, Query Optimization, Queueing Systems, RabbitMQ, Redis, E2e Testing, Next.js, Software Engineering, ReactJS, Concurrency, Technical Debt, Indexer, Backend, Vue.js, Event Driven Architecture, AI Platforms, Information Technology, Integration Frameworks, Apache Kafka, Front End Software Development, Marketplace, Docker, Elixir, Golang - **Published:** August 25, 2026 - **Apply:** https://careers.mantu.com/apply ## About the Role * Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent practical experience. * From 6+ years of experience, with hands-on experience with Node.js. * Strong hands-on experience with Node.js, or proficiency in at least one backend language: Golang, Elixir * Solid experience with modern frontend technologies such as React.js, Next.js, Vue.js, or equivalent. * Strong handon or knowledge exposure to e-commerce domain challenges and patterns. * Solid experience with system design, scalable architecture, and distributed systems. * Experience with PostgreSQL, Redis, MongoDB, Elasticsearch, or similar technologies, including transactions, indexing, query optimization, and concurrency. * Hands-on experience with RabbitMQ, Kafka, or similar message queue/event-driven systems. * Experience with third-party integrations, preferably payment, logistics, marketplace, or other business-critical services. * Experience with Docker, CI/CD, and cloud platforms such as AWS, GCP, or Azure. * Experience with Unit, Integration, and E2E testing and production troubleshooting. * Strong ability to understand business context, make technical decisions, and evaluate trade-offs rather than simply implementing predefined solutions. * Demonstrated end-to-end ownership, strong problem-solving, mentoring, and communication skills. ## Description * Lead the technical design, development, and implementation of scalable web applications and core system modules, ensuring performance, reliability, security, and maintainability. * Take ownership of key systems and legacy components, proactively addressing technical debt, performance, scalability, and reliability issues.\ * Work closely with Product Owners and stakeholders to understand business requirements and translate them into effective technical solutions. * Design and implement critical business workflows such as order, inventory, checkout, and payment, with consideration for data consistency, concurrency, and failure handling. * Build and maintain integrations with payment gateways, logistics providers, marketplaces, and AI services. * Participate in system design and architecture decisions, evaluating technical trade-offs across scalability, performance, reliability, and business impact. * Design and optimize databases, including data modeling, transactions, indexing, query performance, and concurrency control. * Implement asynchronous processing using RabbitMQ, Kafka, or similar technologies, with appropriate retry, idempotency, and failure-handling mechanisms. * Provide technical estimations, contribute to roadmap planning, and proactively identify technical risks and improvements. * Mentor developers, conduct code reviews, and promote engineering best practices and continuous improvement. * Explore opportunities to leverage AI across the software development lifecycle., At Amaris, we strive to provide our candidates with the best possible recruitment experience. We like to get to know our candidates, challenge them, and be able to give them proper feedback as quickly as possible. Here's what our recruitment process looks like: Brief Call: Our process typically begins with a brief virtual/phone conversation to get to know you! The objective? Learn about you, understand your motivations, and make sure we have the right job for you! Interviews (the average number of interviews is 3 - the number may vary depending on the level of seniority required for the position). During the interviews, you will meet people from our team: your line manager of course, but also other people related to your future role. We will talk in depth about you, your experience, and skills, but also about the position and what will be expected of you. Of course, you will also get to know Amaris: our culture, our roots, our teams, and your career opportunities! Case study: Depending on the position, we may ask you to take a test. This could be a role play, a technical assessment, a problem-solving scenario, etc. As you know, every person is different and so is every role in a company. That is why we have to adapt accordingly, and the process may differ slightly at times. However, please know that we always put ourselves in the candidate's shoes to ensure they have the best possible experience. 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