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Droxic

Senior AI Engineer

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    Tech Stack / Изисквания

    Hello, future colleague!

    We are Droxic, a top-notch digital agency with 20+ years of experience in web and mobile development. Using the right combination of world-class technical expertise, creative thinking, and
    hard work has helped us to deliver real business results for some of the world’s most prominent global brands, such as BMW, CNN, British Airways, Triumph, Raiffeisen, Volvo, Heineken, GASAG AG, Delivery Hero, Viessmann, Grohe and many more.

    At DROXIC, we love challenges, and that attitude helps us create and develop complex and large-scale software solutions. Our main goals are to deliver outstanding quality, make our employees happy and keep our clients completely satisfied with our work!

    During the last months we put a lot of effort into advertising our work and approaching new clients, and as a result, we’re facing new and exciting business opportunities. This is a great chance to expand our team, and we’re currently looking for a Senior AI Engineer.

    What will you do:

    • Build AI features end-to-end: design APIs, data flows, and inference pipelines; ship reliable services to production.
    • LLM & Agents: prototype and harden RAG and agentic systems (reasoning, memory, tools) using LangChain/LangGraph, CrewAI or similar.
    • Model integration: integrate or fine-tune LLMs; define prompt strategies; implement guardrails and evals (latency, hallucination, accuracy).
    • Search & knowledge: stand up vector search (FAISS/pgvector/Pinecone/Weaviate) and, where relevant, graph patterns (Neo4j).
    • MLOps & reliability: containerize (Docker), orchestrate (Kubernetes), instrument (Prometheus/metrics), and automate CI/CD.
    • Data engineering: build ingestion/ETL from DBs, document stores, and APIs; ensure data quality and observability.
    • Security & compliance: apply API security (OAuth/JWT) and privacy best practices (PII/GDPR).
    • Collaborate & iterate: work with product/design/clients to validate fast, document clearly, and deliver measurable value.

    Your professional profile:

    • Strong Python engineering; experience with FastAPI (or Flask/Django).
    • Hands-on with LLMs and RAG (embeddings, retrieval, chunking, evals).
    • Experience with at least one agent/orchestration stack: LangChain / LangGraph / CrewAI / LlamaIndex / Haystack.
    • Vector DB/search (e.g., FAISS, pgvector, Pinecone, Weaviate, Milvus).
    • Cloud proficiency (AWS/GCP/Azure); containerization (Docker) and basic Kubernetes.
    • Solid software engineering: testing, observability, CI/CD, documentation.
    • Excellent English; comfortable with client communication.

    Nice to have:

    • PyTorch/TensorFlow/JAX; MLflow/Kubeflow; Azure ML / SageMaker / Vertex AI.
    • Neo4j or other graph databases integrated with LLM workflows.
    • Monitoring with Prometheus; OpenSearch/Elasticsearch.
    • TypeScript/React for internal tools/dashboards.
    • Domain experience (healthcare, legal, biotech/vision) is a plus.

    What can we offer in exchange for your hard work and dedication?

    • You will be awarded with excellent remuneration;
    • You will be part of #DroxicTeam – a bunch of friendly people working in a cozy office with its own private garden;
    • You will have the freedom to work from anywhere and our Sofia-based office;
    • You will benefit from a health and wellness program which includes additional health insurance with dental care coverage; sports subscription and weekly massages.

    So, if YOU fit the requirements and you feel that the position is of interest to you, send us your CV and become part of our awesome team.