Full-stack Developer

You are a driven problem-solver with a passion for engineering innovative digital solutions. You thrive on tackling complex challenges and transforming ideas into impactful, real-world applications. At Modus Digital, you’ll collaborate with a global team of experts to design and build cutting-edge solutions, ranging from AI and agentic systems to web and mobile applications, intranets, APIs, and data visualization platforms.

Modus Digital is an independent company of Advisors & Creators for the world’s leading brands. We define strategies that drive businesses forward and create experiences that people love. We believe digital experiences are human experiences, technology is transformative, and real innovation yields real results. We’re headquartered in New York City with offices throughout the United States, Latin America, Europe, and the Asia Pacific region.

Our Full Stack Developer is an integral part of our engineering team, working across a wide range of clients, tech stacks and projects. A Full Stack Developer at Modus typically reports to an Associate Director and above within Engineering.

Responsibilities 

Engineering Execution & Development

• Develop user interfaces, ensuring responsiveness across devices, and optimizing for performance using modern frameworks like React, Angular, or Vue.
• Create server-side logic and applications, typically using languages and frameworks such as node js, Python, .NET, or PHP.
• Design and create optimized database schemas, tables, and models (e.g., MySQL, Postgres, MongoDB) to ensure efficient data storage and retrieval.
• Integrate large language models and retrieval augmented generation systems into functional applications.
• Provide ongoing support, maintenance, and technical documentation for existing applications.
• Identify, diagnose, and fix bugs and performance issues in the application, ensuring a smooth user experience.
• Reviewing peers' code for quality, security, and standards to maintain a healthy codebase.

Collaboration & Teamwork

• Contribute with technical direction, ensuring solutions are scalable, maintainable, and aligned with business goals
• Work cooperatively with project and account managers, designers, engineers, and other team members, as required
• Attend and engage in daily standups, sprint planning, and retrospective meetings.
• Provide regular updates on progress, risks, and technical decisions to stakeholders
• Contribute to team growth

Other duties related to the position that may arise from time to time and as may be assigned

Qualifications

• 5+ years of experience in software development with a strong full-stack background
• Proven experience in a full stack engineering role
• Strong proficiency in modern frontend and backend technologies (e.g., React, Node.js, .NET, Java or similar)
• Clear understanding of system architecture, APIs, and scalable application design
• Experience with relational and/or NoSQL databases
• Experience with AI and agentic systems and technology is a strong plus
• Strong (English) communication skills, with the ability to collaborate and explain complex ideas to technical and non-technical stakeholders
• You’re located in Buenos Aires and are willing to work from our office at least 2 times a month (hybrid schedule)