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Senior Full Stack Engineer at ATAK Interactive. About ATAK Interactive. ATAK Interactive builds the technical backbone of modern business growth. We specialize in system integrations, API-first solutions, and seamless data connectivity between critical business platforms: ERP, CRM, eCommerce, payments, and analytics. Our development team creates custom solutions that eliminate data silos and automate complex workflows.. What You'll Do. . Scope, Architect, develop, and maintain robust RESTful and GraphQL APIs to connect diverse systems. . Collaborate (often with clients directly) on integration projects with third-party services (payment providers, CRMs, ERPs, marketing platforms, etc.). . Modernize and refactor existing code to support scalable, secure integrations. . Build middleware and microservices for reliable data synchronization and workflow automation. . Design integration strategies around webhooks, message queues, and event-driven systems. . Partner with cross-functional teams to understand system requirements and translate them into working solutions. . Set standards for API security, documentation, and lifecycle management. . What You’ll Bring. . 5+ years as a full-stack or backend engineer, with proven experience in APIs and integrations. . Strong backend development skills (PHP, Python, Node.js, or similar). . Solid frontend fundamentals (JavaScript, HTML, CSS) and ability to work end-to-end when needed. . Hands-on experience with relational databases and query optimization. . Familiarity with integration patterns: REST, GraphQL, SOAP, ETL pipelines, message brokers (RabbitMQ, Kafka, etc.). . Comfortable working in Linux environments and using Git workflows. . A systems thinker who can design for reliability, observability, and performance. . What We Offer. . Competitive compensation and benefits. . Direct impact: Your integration architecture will drive critical client systems. . Complex, real-world integrations: Challenging and rewarding work. . A collaborative, growth-oriented environment where technical excellence is valued. . Company Location: Colombia.