Senior Backend Engineer (Python&Java) with AIML skills

Type of contract: Employment contract

Salary range: PLN gross

What will you do

You will build production-grade AI and GenAI solutions using Python contributing to a large-scale enterprise technology transformation. You will work on LLM-based capabilities RAG solutions agentic workflows and integrations with an existing Java-based ecosystem while ensuring high standards of security testing governance and operational resilience.

Your tasks

• Design and develop production-grade AI and GenAI solutions in Python
• Build and integrate LLM-based applications RAG pipelines and agentic workflows
• Develop secure APIs microservices and integration components
• Integrate Python-based solutions with existing Java services and enterprise platforms
• Evaluate and validate AI-generated outputs using measurable quality criteria
• Apply human-in-the-loop controls traceability and auditability
• Contribute to technical design and architecture decisions
• Develop unit integration contract and automated evaluation tests
• Follow secure coding standards and AI governance requirements
• Contribute to CI/CD pipelines quality gates and automated security checks
• Implement logging monitoring metrics and tracing
• Identify and resolve technical risks dependencies and delivery blockers
• Support releases production readiness and incident response
• Collaborate with architects Tech Leads QA platform and operations teams
• Contribute to engineering standards and continuous improvement

Your skills

• 4 years of professional software engineering experience in Python and Java
• Hands-on experience building AI and GenAI solutions
• Practical knowledge of LLM capabilities limitations and safe usage patterns
• Experience designing and implementing RAG solutions
• Experience with agentic or tool-using AI workflows
• Experience with prompt engineering evaluation and validation approaches
• Knowledge of AI governance security traceability and auditability
• Experience developing microservices and APIs
• Previous commercial experience with Java and Java-based enterprise systems
• Ability to understand review and occasionally modify Java code
• Experience with relational databases such as PostgreSQL or Oracle
• Knowledge of schema design transactional integrity and performance optimization
• Strong unit integration and contract testing practices
• Experience with CI/CD pipelines and quality gates
• Hands-on experience with cloud platforms (Azure preferred)
• Knowledge of REST messaging and event-driven integration patterns
• Experience making pragmatic technical decisions in complex enterprise environments
• Strong understanding of secure software development and operational resilience

Nice to have

• Previous strong hands-on Java and Spring Boot development experience
• Experience delivering solutions in regulated financial services
• Experience with Kubernetes containers and service mesh technologies
• Knowledge of modern observability tooling
• Experience with performance engineering and resilience testing
• Experience with prompt and model version management
• Experience establishing AI-enabled SDLC practices
• Experience measuring the quality and productivity of AI-assisted development

We offer

• Hybrid work in one of our clients office (Kraków) 6-8 days a month
• Working in a highly experienced and dedicated team
• Benefit package tailored to your needs (medical sport lunch subsidy life insurance etc.)
• Online training and certifications
• Access to e-learning platform
• Social events

Required Experience:

Senior IC

Employment Type : Full-Time
Experience: years
Vacancy: 1
Monthly Salary Salary: 14600 - 22300