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Senior Backend Engineer (Python/GenAI) at FusionHit. At FusionHit, we are driven by a clear vision—to empower organizations with AI‑centered solutions that make them more adaptable, efficient, and future‑ready. As a company at the forefront of innovation, we help our clients build exceptional software that not only meets today’s needs but anticipates tomorrow's challenges. Our approach blends cutting‑edge AI technology, top‑tier talent acquisition, and expert project management to ensure that businesses can scale effectively and deliver high‑quality, world‑class software on time and within budget.. Our partnerships speak volumes, with clients like Instructure, Young Living, Imagine Learning, Mars Corp., and many others trusting us to lead the way in software development. We are rapidly growing across our offices in the US, LATAM, and India, and we're creating an environment where talented individuals can thrive, collaborate, and have fun while building transformative solutions.. If you're excited by the opportunity to work in a fast‑paced, innovative environment where scaling and building the future of software is key, we’d love to hear from you. Join us as we work together to redefine the world of software development!. Location:Location:. Must reside and have work authorization in Latin America.. Availability:Availability:. Must be available to work with significant overlap with Mountain Standard Time. Independent Contractor Agreement . - direct hire with one of our US partners. Project Overview:. We are working with a company that builds AI-powered training simulations to help people enhance real-world skills like leadership, communication, and decision-making. Their platform blends real‑time audio/video, digital avatars, and AI—all supported by robust backend infrastructure.. We’re hiring a . Senior Backend Engineer (Python/GenAI). to build the backend systems that enable real-time AI experiences. You will work closely with the AI team to develop services and infrastructure that allow AI models to be deployed, scaled, and integrated into live, low-latency environments. This is a proactive, leadership-driven role where you'll contribute across multiple projects and shape the backend strategy of a lean AI team.. The Ideal Candidate Has:. BS/MS in Computer Science, Information Technology, or related field with 5+ years of experience in backend or full-stack software engineering. . Strong experience with Python and backend service development. . Hands-on expertise with real-time systems (LiveKit, WebRTC, or similar streaming tech). . Experience with low-latency, AI-integrated environments. . Proficiency in scaling services in distributed, production-grade environments. . Solid background with AWS (EC2, ECS, Lambda) and Kubernetes. . Skilled in performance optimization, debugging, and observability tools. . Familiarity with Docker and CI/CD tools. . Experience deploying AI models in production or supporting AI/ML engineers. . Knowledge of LangChain, LangFuse, Ray, or LLMOps frameworks. . Excellent communication skills in English (C1 preferred, strong B2 may be considered). . Key Responsibilities:. Design and implement backend services in Python supporting real-time communication with LiveKit and WebSockets. . Develop tools and systems to support scalable AI deployment and monitoring. . Ensure system performance and reliability on AWS using EC2, Lambda, and Kubernetes. . Collaborate with AI teams to streamline model deployment and live testing. . Support high-stability, low-latency, multi-user environments. . Improve platform observability and debugging through robust logging and metrics. . Take ownership of technical decisions and process improvements across multiple projects.. Company Location: Costa Rica.