Fullstack jobs in Brazil

Senior Software Engineer (Python & AI / ML)

Company: GTG LLC

Company Stage: Startup / Growth-Stage

Location: Remote

Experience Level: Senior (7+ years)

GTG LLC is a growing startup building intelligent, scalable software solutions. We are seeking a Senior Software Engineer with deep expertise in Python and AI / ML engineering, who is also comfortable operating across the full stack.

This role is ideal for someone who enjoys ownership, moving fast, and solving complex technical problems in an early-stage environment. You will work closely with founders and key stakeholders to design, build, and scale backend systems, AI-driven services, and modern web applications.

• Design, develop, and maintain backend services using Python and frameworks such as Flask, Django, and FastAPI
• Build and integrate AI / ML solutions, including model deployment, inference pipelines, and data processing workflows
• Architect and maintain RESTful APIs with strong performance, scalability, and reliability
• Collaborate on frontend development using modern JavaScript frameworks such as React, Next.js, Angular, or Vue
• Contribute to overall system architecture, technical decisions, and engineering best practices
• Implement and maintain CI / CD pipelines to ensure reliable deployments and high code quality
• Work across the full product lifecycle, from early design and prototyping to production support
• Identify technical gaps and proactively propose and implement solutions

• 7+ years of professional experience as a Software Engineer or similar senior-level role
• C1 or higher English proficiency (mandatory) — strong verbal and written communication skills
• Deep expertise in Python and backend development
• Hands‑on experience with Flask, Django, and / or FastAPI
• Strong background in AI / ML engineering, including production‑level model integration and deployment
• Proficiency with modern JavaScript frameworks (React, Next.js, Angular, or Vue)
• Cloud experience with AWS or Azure (required)
• Experience with CI / CD pipelines, version control, and production deployment workflows
• Strong problem‑solving skills and ability to work independently in a fast‑paced startup environment

• Experience with Java or C#, or proficiency in more than one backend programming language
• Experience with GCP in addition to AWS or Azure
• Prior experience working in early‑stage or fast‑moving startups

• Opportunity to play a key technical role in a growing startup
• High level of ownership and influence over architecture and product direction
• Fully remote and flexible work environment
• Competitive compensation, based on experience and skill level