We at localhost are passionate group of tech enthusiasts, with strong software development history and expertise, agile mindset, and DevOps culture. Established in Kosice, Slovakia, we've evolved and grown in 10 years of time, to now be capable of serving the best global brands of the world.
Job Description, Responsibilities, and Duties
With more than 50 engineers, customer focus, continuous improvement, and a growth mindset, we are proud to be the partner to several domestic and global customers. As a member of our growing team, you'll have the opportunity to join us at an exciting time and work on high-impact projects that redefine what's possible in the world of software development.
Working with a global leader in digital technology, you can build your career on an international scale and take advantage of development opportunities with emerging technologies. We’ve created an inclusive environment for you to explore your passions, make an impact, and contribute to the development of software that truly matters.
Job Opportunity
We are seeking talented individuals to join our team and help us establish and grow our presence, organization, and culture, which will drive our software development efforts. As a member of our team, you will have the opportunity to work with cutting-edge technologies and collaborate with top professionals on high-impact and visible projects.
What will you do?
As a Data Scientist you will provide support and problem resolution for specific products, you will also:
- Lead the development and optimization of Large Language Model (LLM) applications, including prompt engineering, tool calls, and structured output parsing using frameworks like LangChain and Pydantic.
- Design and implement advanced Retrieval-Augmented Generation (RAG) systems, including document processing, chunking strategies, embedding techniques, and hybrid/semantic search using vector databases.
- Architect and develop agentic AI systems using frameworks such as LangGraph and AutoGen, creating autonomous workflows that solve complex business problems.
- Dedicate 10% of your time to applied research on cutting-edge topics in generative AI, staying ahead of industry developments and identifying new opportunities.
- Present findings and demonstrate prototypes to stakeholders, translating technical concepts into business value.
Employee Perks and Benefits
- 6 extra days off: 3x localhost days and 3x sick days
- Referral bonus
- Supporting your ideas
- Transparent approach and communication
- Flexible working arrangements
- Bonuses at every smashing life events
- Physiotherapist sessions once a week in the office
- Education support (certificates, courses, trainings)
- Multisport Card
- Financial contribution to Pension plan
- Benefit plus budget
Requirements for the Employee
Candidates for this position should have education at the following levels:
University education (Master's degree or equivalent).
Language Skills
English – Upper intermediate (B2).
Experience in the Position/Field
- Expert knowledge in Python with specific experience applying it to LLM and generative AI applications (OpenAI, LangChain, LangGraph, Pandas).
- Demonstrated experience with prompt engineering, RAG systems, and agentic frameworks.
- Strong understanding of vector databases, embedding techniques, and semantic search implementations.
- Analytical Thinking: Ability to determine the root cause of complex AI system challenges and create innovative solutions.
- Machine Learning: Strong foundation in traditional ML techniques (Clustering, Regression, Neural Networks) with emphasis on their application alongside generative AI.
- Requirements Analysis: Ability to translate business needs into technical specifications for AI prototypes and proof-of-concepts.
- Excellent communication skills to present technical concepts to non-technical stakeholders.
