Role overview
Published via Mainder
We are looking for a Senior Fullstack Engineer to join a high-impact product team building a scalable, high-performance platform with AI-driven capabilities.
In this role, you will work at the intersection of architecture, product development, and AI engineering, contributing not only to feature development but also to system design and technical direction.
You’ll be involved in building real-time, data-intensive systems, improving user experiences, and integrating intelligent features that drive business impact. This is an ideal opportunity for someone who enjoys owning problems end-to-end, working in complex environments, and applying AI pragmatically to real-world use cases.
Design and evolve scalable architectures across services, APIs, and frontend applications
Build and maintain fullstack solutions with strong backend focus
Develop and integrate AI-powered features (LLMs, agents, automation pipelines)
Collaborate with product and business stakeholders to deliver high-impact solutions
Optimize high-throughput, real-time systems for performance and scalability
Define and improve data flows, system integrations, and platform reliability
Contribute to technical decisions, architecture, and best practices
Improve observability, monitoring, and system performance
Work closely with cross-functional teams in a fast-paced environment
Strong experience as a Fullstack Engineer, with solid backend expertise
Proven experience building scalable, high-traffic systems (e.g., e-commerce, marketplaces, etc.)
Strong skills in system design, architecture, and API development
Hands-on experience with AI / GenAI solutions in production
Experience with backend technologies such as Java, Python, or TypeScript
Strong understanding of databases and data modeling (SQL/NoSQL)
Experience working with distributed systems and real-time data
Familiarity with cloud environments (AWS)
Strong problem-solving skills and ownership mindset
Ability to work autonomously without constant supervision
100% remote role for LATAM professionals.
International contractor agreement with payment in USD.
Flexible schedule with autonomy and trust.
Professional growth opportunities in leadership and advanced technical domains.
A supportive and inclusive environment that values innovation and diverse perspectives.
We are a technology agency with over 10 years of experience delivering custom digital solutions for international clients, primarily in the U.S.
We specialize in building scalable, innovative, and reliable software products — helping companies modernize systems, accelerate digital transformation, and adopt high-quality engineering practices.
You’ll work alongside skilled professionals, contribute to high-impact global projects, and grow within a culture that values excellence, collaboration, and continuous learning.