Headquarters: Sweden

URL: http://career.proxify.io

The Role:

We are looking for a Senior Python AI Engineer to join our fast-growing Network, who will design and develop backend systems and APIs for AI-powered applications. You will play a key role in designing and building scalable backend systems and APIs, collaborating closely with cross-functional teams to shape the future of data-driven products across various platforms.

What we are looking for:

• Strong proficiency in Python (5+ years), including modern frameworks (FastAPI, Flask, or Django).

• Deep learning frameworks (PyTorch, TensorFlow) for custom modeling beyond LLM APIs.

• Experience with large language models (LLMs) such as GPT, Gemini, LLaMA, or similar.

• Experience with prototyping tools: Streamlit, Gradio

• Solid experience designing RESTful APIs and microservice architectures.

• Strong backend development expertise, including databases (SQL/NoSQL).

• Experience with version control (Git) and CI/CD workflows.

• Hands-on experience with containerization (Docker, ideally Kubernetes).

• Familiarity with cloud platforms (AWS, Azure, or GCP) is a plus.

• Understanding of security best practices for handling sensitive data.

• Strong problem-solving skills to address complex challenges and performance bottlenecks.

• Excellent technical communication skills to collaborate effectively across teams and explain technical concepts to non-technical stakeholders.

• Ability to work independently while aligning with broader team goals.

• Intermediate-advanced English level.

• Time zone: CET (+/- 3 hours). We are unable to consider applications from candidates in other time zones.

AI/ML & LLM Ecosystem:

• LLM orchestration frameworks: LangChain, LangGraph, LlamaIndex.

• Retrieval-Augmented Generation (RAG) pipeline design.

• Experience with vector databases (Pinecone, Weaviate, Milvus, Chroma, FAISS).

• Hands-on with LLMs & APIs: OpenAI (GPT-5/5-mini), Anthropic Claude, Google Gemini, Meta Llama, Mistral.

• Familiarity with AWS Bedrock for accessing and deploying foundation models.

• Prompt engineering and structured output design (JSON mode, function calling).

• Model fine-tuning (LoRA, QLoRA) and evaluation frameworks (DeepEval, Ragas).

Responsibilities:

• Design and develop backend systems and APIs for AI-powered applications.

• Build and optimize LLM-based workflows, including chatbots, copilots, and automation tools.

• Implement RAG architectures using vector databases and document pipelines.

• Integrate and orchestrate cloud-hosted foundation models (AWS Bedrock, OpenAI, Anthropic, Google Gemini, Meta Llama, Mistral).

• Collaborate cross-functionally with data scientists, product managers, and frontend developers to deliver end-to-end AI products.

• Ensure performance, scalability, and cost optimization of AI solutions in production environments.

• Monitor, evaluate, and continuously improve deployed AI systems.

What we offer:

Get paid, not played

No more unreliable clients. Enjoy on-time monthly payments with flexible withdrawal options.

Predictable project hours

Enjoy a harmonious work-life balance with consistent 8-hour working days with clients.

Flex days, so you can recharge

Enjoy up to 24 flex days off per year without losing pay, for full-time positions found through Proxify.

Career-accelerating positions at cutting-edge companies

Discover exclusive long-term remote positions at the world's most exciting companies.

Hand-picked opportunities, just for you

Skip the typical recruitment roadblocks and biases with personally matched positions.

One seamless process, multiple opportunities

A one-time contracting process for endless opportunities, with no extra assessments.

Compensation

Enjoy the same pay, every month with positions landed through Proxify.

To apply: https://weworkremotely.com/remote-jobs/proxify-ab-senior-python-ai-engineer-4