AI Engineering Internship
Cluj-Napoca - Romania
Job Summary
About Nexttech
Founded in 2015 Nexttech has built a solid foundation in delivering comprehensive IT solutions tailored to meet diverse client needs. With expertise spanning five key industry sectorsBanking Energy Telecom Automotive andE-commerce & Logisticswe provide nearshore and onshore services designed to drive efficiency and support strategic growth.
Our team supports every phase of the Software Development Life Cycle (SDLC) from developing detailed roadmaps and resolving complex software challenges to ensuring quick time-to-market and optimized ROI.
AI Engineering Internship (6 Weeks Program)
Location: Remote / Hybrid
Duration: 6 weeks
Type: Internship (Hands-on project-based)
About the Internship
We are looking for motivated and curious individuals to join our AI Engineering Internship Program a structured 6-week journey designed to take participants from Python fundamentals to building production-ready AI applications.
This program focuses on practical learning combining core software engineering skills with modern AI technologies such as LLMs APIs and Retrieval-Augmented Generation (RAG).
What Youll Learn & Build
Week 1 Python Foundations for AI
You will build a strong programming foundation:
- Python basics (variables loops functions)
- Data structures (lists dictionaries JSON)
- Object-Oriented Programming (OOP)
- Data validation using Pydantic
Hands-on:
- Coding challenges focused on clean code and problem-solving
- Type-safe data parsing and validation
Mini-project:
- Build a CLI data validator that processes and validates JSON input
Week 2 APIs & Data Pipelines
Learn how real-world systems communicate and handle data:
- REST APIs and FastAPI
- Database fundamentals (SQL ORMs)
- Async programming basics
Hands-on:
- Build a data pipeline: fetch clean store display
Mini-project:
- Develop a Data Aggregator (e.g. news or pricing dashboard)
Week 3 Introduction to LLMs
Understand the foundations of modern AI:
- How Large Language Models (LLMs) work
- Prompt engineering basics
- Embeddings and vector databases
Hands-on:
- Experiment with prompts and LLM APIs
- Build semantic search using vector stores
Mini-project:
- Create a text summarizer or Q&A chatbot
Week 4 Building LLM Applications
Move from experimentation to real products:
- LangChain and LangGraph
- Agent-based architectures (ReAct tool-calling agents)
- Memory and workflow orchestration
Hands-on:
- Build multi-step AI workflows
- Create stateful AI agents
Mini-project:
- Develop an Agentic Assistant (e.g. travel legal or support assistant)
Week 5 Retrieval-Augmented Generation (RAG)
Master one of the most important real-world AI patterns:
- RAG architecture
- Document processing and chunking strategies
- Retrieval and ranking techniques
Hands-on:
- Build full ingestion and retrieval pipelines
Mini-project:
- Create a Chat with Your Documents application
Week 6 Final Project (Production Simulation)
Work in teams to build a real-world AI product.
Project options:
- AI customer support agent
- Internal knowledge assistant
- Code assistant
- AI concierge for real estate or hospitality
Requirements:
- LLM integration
- API usage
- Basic web interface (Flask or FastAPI)
- Logging and error handling
What Were Looking For
- Basic programming knowledge (any language)
- Interest in AI backend development or data systems
- Strong problem-solving mindset
- Ability to work collaboratively in teams
What Youll Gain
- Hands-on experience with modern AI tools and frameworks
- Real-world project portfolio
- Mentorship and structured learning path
- Exposure to production-level AI system design
Our Culture: What Sets Us Apart
At Nexttech we dont rely on polished platitudes; instead we let our team members voices speak to the essence of who we are:
An organization that always listens to feedback from employees continuously improving based on input and suggestions.
A culture that encourages work-life balance and independence at work.
A place where genuine communication and respect thrive between all levels of the company.
An organization thats close to people where kindness and support are constants.
A culture that makes new members feel welcomed involved in day-to-day decisions and valued for their unique skill set from day one.
A team that promotes psychological safety and the confidence to speak your mind without fear.
Join Us and Bring Your Full Self to Work
We promise an environment where respect openness and recognition are at the core of your experience. Here youll find a collaborative and responsible team that values fun autonomy and flexibility. Youll face challenges that allow you to grow supported every step of the way by peers and leadership alike.
What We Look for in You:
If you possess strong expertise a collaborative spirit a responsible and diligent mindset resilience flexibility open-mindedness courage and an innate desire to support your teammates youll fit right in at Nexttech.
Come be part of a place where your effort is valued your ideas are heard and your growth is our priority.
Required Experience:
Intern