Full Stack Engineer, AI systems

About This Opportunity

We are representing a confidential AI technology organization building proactive, AI-native applications for a global user base. Our client is focused on bringing intelligence to everyday workflows with minimal prompting, achieving high reliability for long-running tasks and real-world completion.

We are seeking a Full Stack Engineer, AI Systems to join their team in Portugal. In this role, you'll build production-grade product features that turn AI capabilities into usable workflows, designing how agents operate, fail, recover, and deliver consistent value to users.

Responsibilities

• Build end-to-end product features across frontend, backend, and AI integrations
• Design agent workflows that handle planning, tool use, failure, and recovery across multiple steps
• Integrate LLMs, memory, and external tools into systems that behave reliably under real-world conditions
• Design real-time AI interactions with streaming, partial results, and tight latency constraints
• Improve system reliability, observability, and fallback mechanisms
• Collaborate closely with ML, backend, and product teams to ship features end-to-end
• Continuously iterate based on real usage and failure modes
• Own and ship AI-native product features that move beyond chat into persistent, goal-driven workflows
• Establish patterns and abstractions for integrating LLMs, memory, and external tools into scalable product systems

What We're Looking For

• Strong experience in full stack engineering (frontend and backend)
• Solid understanding of system design and API architecture
• Experience working with LLMs, RAG systems, or AI-powered applications
• Proficiency with Next.js, Python, and Node.js
• Experience with PyTorch and working with OpenAI, Anthropic, or open-source LLMs
• Familiarity with SQL and NoSQL databases
• Experience with Kubernetes and Docker
• Ability to handle ambiguity and make pragmatic engineering decisions
• Strong ownership mindset - able to take features from idea to production
• Comfort working in fast-moving environments with evolving requirements

How We Work With You

As a Get A Job.ai candidate, you'll apply directly through our platform. Our recruiting team will conduct an initial screening to ensure alignment with the role requirements. If there's a strong match, we'll submit your profile to our client for consideration. The client's interview process typically consists of 3-4 interviews conducted via virtual meetings or onsite.

Important: Please do not attempt to contact the client directly. All communication and coordination will be managed through Get A Job.ai to ensure a professional and efficient process.

Pay

Compensation details will be discussed during the screening process with our recruiting team.

Equal Employment Opportunity: Get A Job.ai is committed to fair and equitable recruiting practices. We evaluate all candidates based on qualifications and merit, and we partner with clients who share our commitment to building diverse and inclusive teams.