Senior Full Stack Developer

Description

Job Summary: Nubax is seeking a Senior Full Stack Developer to design and develop scalable backends, optimize resources, integrate services, participate in architectural decisions, and collaborate on frontend. Key Highlights: 1. Design and development of high-performance and scalable backends 2. Participation in architectural decisions and collaboration on frontend 3. A continuous learning environment with real-world challenges and opportunities At Nubax, we are looking for a **SENIOR FULL STACK DEVELOPER**! **Responsibilities:** * Design and develop high-performance and scalable backends. * Optimize CPU, memory, I/O, and connection usage. * Define data structures, workflows, and efficiency-oriented patterns. * Integrate APIs, external services, and distributed systems. * Participate in architectural decisions alongside architects and DevOps. * Implement best practices for observability and monitoring. * Collaborate on frontend development when required. **Requirements:** * 10 years of development experience * 2 years of experience in technical leadership roles * Backend: Node.js * Frontend: React * Databases: PostgreSQL and MySQL * NoSQL: MongoDB and/or Weaviate * Experience with horizontally scalable architectures * Knowledge of AWS, Fargate, or similar technologies * Proficiency with Docker or containerized environments **Desirable:** * Basic knowledge of AI / Machine Learning * Experience integrating LLMs, embeddings, or vector databases **Why Join Nubax?** * At Nubax, we don’t just deliver solutions—we create real impact in an increasingly digital and challenging world. We are an entrepreneurial company where every individual has the freedom to propose, build, and grow. * We think big, but act closely: Innovation drives us, but so does our commitment to humanity. * Your growth is central: You’ll find an environment where learning is continuous, challenges are real, and opportunities are tangible. * We work with purpose and as a team, supported by industry leaders who share their expertise and are always ready to collaborate. * Workplace culture isn’t a benefit—it’s part of our DNA: We value respect, active listening, and well-being as pillars of everyday life. Our **Benefits** include: Complimentary days off (for your birthday and one day per month to enjoy as you wish), SportClub discounts \+ access to online platform, top-tier health insurance, continuous training, internal development/growth opportunities, additional days off for studies/exams, additional paternity leave days, gifts for births and special occasions, among others! We look forward to meeting you!! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . *The information you provide will be treated confidentially and used solely for this recruitment process and/or future selection processes.* Workplace: Hybrid in Vicente López, Buenos Aires