Synthflow AI is hiring a Machine Learning / NLP Engineer (Working Student)

Synthflow AI is hiring a Machine Learning / NLP Engineer (Working Student) to bridge research and production in Berlin. You’ll work on cutting-edge NLP projects involving LLMs, Transformers, and RAG, building systems that ship to users and help bring AI to life at scale.

What You'll Do

• Implement, fine-tune, and evaluate models such as BERT, Transformers, and modern LLMs.
• Build and optimize RAG pipelines for production use cases.
• Conduct LLM evaluations and benchmarking for accuracy, latency, and robustness.
• Collaborate with engineers and researchers to integrate ML models into our platform.

What We're Looking For

• Strong Python skills and experience writing clean, maintainable production code.
• Hands-on experience with PyTorch or similar frameworks.
• Solid understanding of Transformers, BERT, LLMs, and deep learning fundamentals.
• Familiarity with NLP tasks such as text classification, QA, summarization, and semantic search.
• Interest in applied ML research and the ability to read & implement recent papers.
• Master’s degree (or currently pursuing a Master’s) in Computer Science or a closely related field; ideally with excellent academic performance.

Nice to Have

• Experience with audio/acoustic ML: ASR (automatic speech recognition) and TTS (text-to-speech).
• Experience with vector databases (e.g., Qdrant, Pinecone, Weaviate).
• Exposure to LangChain, LlamaIndex, or other LLM orchestration tools.
• Understanding of LLM evaluation techniques and metrics.

Technical Stack

• Python, PyTorch, BERT, Transformers, LLMs, RAG
• Vector Databases: Qdrant, Pinecone, Weaviate
• LangChain, LlamaIndex

Team & Environment

You will work closely with engineers and researchers.

Benefits & Compensation

• Opportunity to work with cutting-edge LLM, NLP, and speech AI technology.
• Hands-on mentorship and the ability to ship real products that solve customer needs.
• Flexible work environment and growth opportunities.
• The ability to publish your work in blog posts or academic journals.

Synthflow AI is backed by Accel, Atlantic Labs, and Singular, trusted by over 1,000 customers, and leads an industry shift toward sophisticated and accessible conversational AI.