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GFT Technologies SE

Tech Lead Java Engineer

GFT Technologies SE Krakow, Lesser Poland Voivodeship, Poland · PLN 209K–PLN 320K/yr

IT Services and IT Consulting · 10,001+ employees

4 d ago
java Senior (5-10 yrs) Contractor Poland
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About the role

You will design and build production-grade software solutions, focusing on AI-powered applications and modern backend/frontend development. Your role includes integrating large language models into business processes and managing agentic AI workflows.

What they look for

Java Spring Boot React PostgreSQL Redis Kafka Kubernetes Prompt engineering LLM CI/CD Terraform AWS Azure GCP REST APIs Observability

Requirements

The ideal candidate has strong experience with Java, Spring Boot, and React, alongside hands-on expertise in prompt engineering for production LLM applications. Proficiency in cloud platforms, Kubernetes, and CI/CD pipeline management is essential for this role.

Benefits

Medical insurance Sport subsidy Lunch subsidy Life insurance Online training Certifications E-learning platform access Social events

Full description

Type of contract: Employment contract

Salary range: 17400 - 26700 PLN gross

What will you do?

You will design, build, and maintain production-grade software solutions with a strong focus on AI-powered applications, modern backend and frontend development, and cloud-native platforms. You will work on integrating large language models into business processes, developing agentic AI solutions, improving CI/CD pipelines, and ensuring reliability, observability, and scalability across the technology landscape.

Your tasks

  • Design, build, and deliver production-quality services
  • Develop and optimize CI/CD pipelines, testing processes, and platform observability
  • Design, evaluate, and optimize prompts for production LLM applications
  • Build and manage prompt libraries and versioning strategies
  • Translate business requirements into structured prompt specifications
  • Design and implement agentic AI solutions and multi-agent workflows
  • Build LLM observability, evaluation, logging, and guardrail frameworks
  • Support responsible AI adoption through validation and risk mitigation practices
  • Develop backend services using Java and Spring Boot
  • Build frontend applications and integrations using React
  • Work with cloud platforms, databases, messaging systems, and Kubernetes environments

Your skills

  • Strong experience with Java and Spring Boot
  • Experience building REST APIs and event-driven services
  • Strong React development skills
  • Experience with PostgreSQL and Redis
  • Experience with Kafka or similar messaging platforms
  • Hands-on experience with prompt engineering for production LLM applications
  • Knowledge of prompt evaluation frameworks and tooling
  • Understanding of tokenization, context limits, temperature tuning, and LLM behavior
  • Experience designing prompts for tool calling, structured outputs, and multi-turn conversations
  • Experience with Kubernetes
  • Experience building and maintaining CI/CD pipelines
  • Experience with Terraform
  • Experience working with AWS, Azure, or GCP

Nice to have

  • Experience with LangSmith, PromptFlow, Braintrust, or similar tools
  • Experience designing memory-augmented AI systems
  • Experience with multi-agent architectures
  • Knowledge of AI governance and responsible AI practices
  • Experience with performance optimization and platform observability

We offer

  • Hybrid work in our client's office (Kraków) 6 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

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