Lead Backend Consultant (AI/ML)

Location: Kraków, Poland; hybrid work from the client's office is required 8 days per month.

Salary: 200–265 PLN/hour; B2B contract.

Company

hirify.global is hiring for a large-scale enterprise transformation initiative focused on modernizing critical business applications.

What you will do

• Build, test, release, integrate, and support enterprise-grade Java microservices and related components.
• Contribute to solution design, target architecture, integration patterns, and non-functional requirements.
• Identify technical risks, dependencies, and delivery blockers while supporting release and environment readiness.
• Implement unit, integration, contract, and API testing alongside CI/CD practices and quality controls.
• Use AI-assisted engineering tools and apply LLM, RAG, and agent-based development practices within security and governance standards.
• Build production-ready services with strong observability and collaborate with architecture, QA, SRE, platform, and operations teams.

Requirements

• At least 8 years of professional software engineering experience in enterprise-scale environments.
• Strong hands-on Python development experience and good practical knowledge of Java with Spring Boot microservices.
• Strong knowledge of Oracle or PostgreSQL, including schema design, performance optimization, and transactional systems.
• Strong unit and integration testing experience with tools such as JUnit, Mockito, and Testcontainers; experience with API and contract testing.
• Hands-on experience with Azure cloud services, CI/CD pipelines, quality gates, and Jenkins or GitLab.
• Understanding of Sonar, SAST, DAST, dependency scanning, secure coding, and security-by-design principles.
• Strong understanding of REST APIs, messaging, event-driven architectures, and integration patterns.
• Experience contributing to technical design decisions and architectural discussions, with leadership and collaboration skills.
• Practical experience with GenAI tools, LLM concepts, RAG patterns, AI governance, engineering controls, and software engineering use cases.
• Openness to hybrid work from the client's Kraków office 8 days per month.

Nice to have

• Experience in financial services or other highly regulated industries.
• Knowledge of containers, Kubernetes, and service mesh technologies.
• Experience with observability platforms, logging, metrics, tracing, performance engineering, and resilience testing.
• Previous experience implementing AI-enabled SDLC practices or building RAG solutions and integrating GenAI capabilities.
• Experience with prompt engineering, evaluation frameworks, or AI governance controls.

Culture & Benefits

• Work on a large-scale enterprise transformation in a complex, highly regulated environment.
• Collaborate across engineering, architecture, QA, SRE, platform, and operations teams.
• Contribute to engineering standards, continuous improvement, and engineering excellence.
• B2B contract with hybrid office attendance in Kraków.