At Lumenalta, we create impactful software solutions that drive innovation and transform businesses. Since 2000, we’ve partnered with visionary leaders to build cutting-edge tech, solve complex challenges, and deliver results faster through our elite teams and tech-driven approach. Join us in shaping the future of technology.

We are seeking a Senior AI Fullstack Engineer proficient in JavaScript, TypeScript and Python who thrives on solving AI challenges across the entire stack. This role is idóneo for a developer who excels in both frontend and backend development and enjoys building with AI-assisted tools. You will combine strong software engineering fundamentals with deep experience in AI harness design, prompt engineering, evaluation rubrics.

What You’ll Be Doing
• Collaborate with visionary enterprise clients
• Full-stack Expertise: Write clean, secure, and testable TypeScript code across the software ecosystem.
• Architecture & Design: Develop modular patterns, scalable system architectures, and efficient server- and client-side logic.
• API Integration: Design, build,



and maintain robust RESTful, GraphQL, and WebSocket APIs
• Extend and implement AI workflows and harnesses using TypeScript and following AI and software engineering best practices; you'll be in charge of Harness Infrastructure, Prompt Engineering, Debugging, and Evaluations.
• Create transformative digital products
• Tackle complex challenges at scale
• Push boundaries with emerging technologies

What we are looking for
• 7+ years of expertise in JavaScript, TypeScript, Node, Express, Mongo, SQL, AWS.
• Strong Python expertise, including asynchronous services, type-safe application development, API design, testing, and scalable backend systems
• Recent demonstrable hands-on experience building with AI tools, prompt debugging tools, custom AI harnesses, and agentic coding workflows.
• Proficient in written and verbal communication in English.
• Demonstrable experience working in a remote enviro

📌 Senior AI Fullstack Software Engineer (Colombia)
🏢 Lumenalta
📍 Colombia