Senior Backend Developer - Node.js

This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Senior Backend Developer - Node.js in Portugal.

Join a high-performing engineering environment where backend systems power large-scale digital financial products used by a global audience. This role is ideal for a senior developer who enjoys building secure, scalable, and high-availability services in a fast-moving ecosystem. You will contribute to core platform architecture, API performance, infrastructure resilience, and new product innovation. Working in a remote-first culture, you will collaborate with skilled engineers across multiple regions while maintaining strong autonomy and ownership. The position offers the opportunity to solve complex technical challenges involving real-time systems, microservices, and distributed applications. If you thrive in modern backend development and want your work to have direct global impact, this is an excellent opportunity.

• Design, build, and maintain backend services using Node.js and JavaScript for high-traffic production systems
• Develop new platform features and products using agile methodologies with a focus on speed, reliability, and user experience
• Improve scalability and performance of real-time services, APIs, and core backend infrastructure
• Build and optimize microservices-based architecture to support growth and modular development
• Ensure strong security standards across backend systems, APIs, authentication flows, and internal processes
• Integrate databases such as MySQL and MongoDB while maintaining data integrity and efficiency
• Collaborate with cross-functional teams to deliver technical solutions aligned with product goals
• Monitor systems, troubleshoot production issues, and continuously improve service reliability

Requirements:

• Strong professional experience in backend development using Node.js and JavaScript
• Proven background contributing to complex platforms with large-scale or real-time architectures
• Solid understanding of microservices design principles and distributed systems
• Hands-on experience with MySQL, MongoDB, or similar database technologies
• Strong knowledge of backend security best practices and secure coding standards
• Ability to quickly learn new tools, frameworks, and emerging technologies
• Experience with Redis, caching layers, job queues, or message queue systems is highly valued
• Exposure to blockchain integrations or high-availability systems is a plus
• Additional experience with Ruby, Rust, or C++ is advantageous
• Strong communication, ownership mindset, and ability to work effectively in remote teams

Benefits:

• Competitive compensation package
• Fully remote and flexible work environment
• Autonomy with outcome-focused culture
• Mentorship and continuous career growth opportunities
• Learning-focused environment with knowledge sharing across teams
• Supportive and collaborative international team culture
• Team-building activities and social events online and in person
• Opportunity to work on innovative products with global reach and visible impact