Senior Software Developer

Description

Job Summary: We are looking for a senior full-stack developer who can take complete ownership of features end-to-end—understanding the customer’s problem and making technical decisions autonomously. Key Highlights: 1. Develop end-to-end features with full ownership 2. Work directly with the product and operations teams 3. Contribute to system architecture as it scales About Kleva Kleva is an AI-powered agent platform that automates collections management. We build intelligent systems capable of deciding when and how to contact customers—and of holding real conversations with them. We do not build simple automated bots. Our tech stack processes thousands of concurrent calls per day, integrating voice pipelines, LLMs, multi-carrier telephony, and enterprise customer systems across 8 Latin American countries. We move fast. Speed is our advantage. https://youtu.be/PtoAX02XuO8 Tech Stack* Frontend: JavaScript / TypeScript, React, Next.js * Backend: Go, Node.js, REST APIs, GraphQL * Databases: PostgreSQL (relational + NoSQL) * Infrastructure: GitHub, Docker, CI/CD pipelines, cloud (GCP/AWS) * **AI Tools: AI coding assistant (Claude Code or Cursor) is a must** About the Role We seek a senior developer who can own features end-to-end—from understanding the customer’s problem to deploying into production. There are no PMs chewing up tickets for you. You’ll be close to the business, understanding why we build what we build, and making technical decisions autonomously. The team is small and there’s no time for bureaucracy. If you need three meetings before you start coding, this isn’t the place for you. Responsibilities* Develop end-to-end features (frontend + backend) with full ownership * Design and implement APIs and integrations with enterprise customer systems * Contribute to system architecture as it scales in volume and across countries * Work directly with the product and operations teams to define solutions * Participate in code reviews and maintain codebase quality * Debug production issues. If something breaks at 9pm during a campaign of 150K calls, it must be fixed Consider applying if...* You value direct and transparent feedback * You believe there’s always something new to learn * You prefer honest technical debates over lukewarm consensus Not a good fit if...* You need clearly defined hierarchies and perfect documentation to get started * You prefer being told what to do rather than proposing solutions * You’re uncomfortable with ambiguity. In early-stage environments, things change quickly * You believe you’ve already reached your desired level as a developer **Requirements** * 4+ years of professional software development experience + Proficiency in JavaScript/TypeScript, React, Next.js, and Node.js + Solid relational database skills (PostgreSQL/MySQL) and experience with NoSQL + Experience with REST APIs and GraphQL + Comfort with Git, CI/CD, and cloud (GCP or AWS) + Proven track record of shipping products to production in high-velocity environments + Ability to work independently, take ownership, and solve problems without constant supervision Desirable* Experience integrating or working with LLMs / AI pipelines * Background in fintech, collections, or B2B enterprise products * Experience in early-stage startups * Experience with high-concurrency systems **Benefits** * Competitive USD salary * Three weeks of paid vacation per year * Hubs in Buenos Aires and Mexico City for those opting for a hybrid model—with the option to work 100% remotely * In every interaction, we value results over egos or hierarchies