Lead/Staff Fullstack Engineer (AI Platform & Agents)

Location: Warsaw, Poland; applicants may be required to appear onsite at a hirify.global office during the hiring process.

Employment type: Full time

Company

hirify.global is a global technology company providing software and information solutions for professionals across health, justice, sustainability, prosperity, and commerce.

What you will do

• Design and implement full-stack applications, AI agents, and platform components for GenAI development, validation, and deployment.
• Build developer tooling, CI/CD, infrastructure-as-code, and observability for safe iteration, evaluations, canary releases, rollbacks, and cost and quality telemetry.
• Apply secure SDLC, threat modeling, least-privilege access, and privacy-by-design practices.
• Use LLM patterns including RAG, retrieval, routing, tool use, and evaluations to improve reliability, trust, decision speed, and cost efficiency.
• Collaborate with product, UX, and domain experts on customer-focused solutions, while driving architecture and larger projects.
• Mentor engineers and lead hands-on delivery from concept through production.

Requirements

• 5+ years of professional software engineering experience.
• Strong full-stack development and cloud experience with AWS, Azure, or GCP.
• Expertise in at least one of AI agent development and evaluation, backend, frontend, cloud services, CI/CD and infrastructure as code, SRE, quality engineering, or secure SDLC.
• Proven experience delivering secure, reliable, cloud-native systems to production.
• Strong problem-solving, ownership, and cross-functional communication skills.
• Participation in onsite hiring activities at a hirify.global office may be required.

Nice to have

• Experience taking AI agents from concept to production, including safety evaluations, A/B testing, and continuous improvement.
• Experience with LangChain, LangGraph, MCP, vector and RAG systems, or OpenSearch.
• Experience with traditional ML training, deployment, and monitoring.
• Understanding of LLM failure modes, fine-tuning, model adaptation, and frameworks such as SOC 2 or HIPAA.

Culture & Benefits

• Remote-first team of approximately 100 engineers within an established global organization.
• High-autonomy, high-impact environment combining corporate stability with startup agility.
• Inclusive culture emphasizing diversity, creativity, belonging, and professional growth.
• Work focused on medical AI, including the UpToDate Expert AI clinical reasoning agent.

Hiring process

• 15-minute introductory screening.
• Two live-coding interviews, one systems-design interview, and one presentation of past work.
• Typical process timeline: 2–4 weeks.