Machine Learning Engineer (Contract)

We are seeking a Machine Learning Engineer for an exciting freelance engagement with Sigma Software. The role involves on-site work in Sweden for 2 months developing applied AI solutions including LLM-based systems and intelligent automation.

• Develop and integrate ML and NLP models for intelligent assistant features
• Build agentic workflows using LangChain, LangGraph, or similar frameworks
• Prototype user interfaces and internal tools using Streamlit or Gradio
• Collaborate with engineering and product teams to plan and deliver ML-driven features
• Manage development and runtime environments using Docker
• Use Git for version control and maintain clean, well-structured code
• Query structured data using SQL
• Contribute to model deployment and operations in a cloud environment (primarily Azure)

• 3+ years of experience in a similar position
• Proficient in Python, with experience in building data pipelines and interacting with APIs
• Experience with agentic AI frameworks such as LangChain or LangGraph
• Solid understanding of ML and NLP, especially transformer-based architectures (e.g., BERT, GPT)
• Hands-on experience with ML frameworks (e.g., PyTorch, TensorFlow)
• Familiarity with prototyping tools such as Streamlit or Gradio
• Experience with engineering best practices: Git, Docker, cloud basics, task estimation
• Working knowledge of SQL
• Upper-Intermediate level of English (both written and spoken)
• Strong analytical and problem-solving skills
• Ability to work independently and in a team
• Adaptability to changing project requirements
• Attention to detail
• Proactive communication style