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Plan A (TechPlanA) is a Sofia-based software development agency and nearshore staff augmentation provider hiring for client-billable engineering roles.

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PA
Posted 2w ago

Senior AI Engineer

Plan A
Sofia, Sofia City, Bulgaria
HybridFull Time
Responsibilities
  • designing models
  • integrating models
  • deploying models
Requirements
  • 5+ years AI/ML engineering experience
  • Production ML deployment
  • Multilingual NLP pipelines
  • Python and ML framework proficiency
  • Cloud experience (Azure/GCP)
  • Model lifecycle and monitoring knowledge
Technical tools mentioned
PythonPyTorchTensorFlowScikit-learnGPTLLaMAMistralAzureGCP

Job description

About us:


PLAN A is a software development company delivering tailored enterprise software solutions, nearshore Agile teams, and digital transformation projects across Europe.

We combine technical excellence with business insight, focusing on real impact - for our clients and for our people.
Our approach is rooted in partnership, reliability, and transparency, and we thrive in a culture that values teamwork, continuous learning, and accountability.

We don’t just build software. We build long-term success -together.


We are looking for a Senior AI Engineer with a strong background scalable machine learning systems to join our growing AI team. The ideal candidate brings hands-on experience in building multilingual AI pipelines, deploying models in production, and integrating state-of-the-art LLMs into real-world applications. You will play a key role in designing AI architecture, managing model lifecycles, and contributing to the development of intelligent systems that operate at scale.


Responsibilities:


  • Design, develop, and deploy AI models and services for NLP, document processing, and forecasting.

  • Integrate transformer-based models (e.g., GPT, LLaMA, Mistral) for tasks such as classification, summarization, and translation.

  • Collaborate with data scientists, engineers, and product teams to deliver AI solutions aligned with business goals.

  • Ensure model reliability, scalability, and performance across multilingual and document-centric applications.

  • Apply ethical AI practices in model development and data usage.

  • Contribute to technical documentation, experimentation frameworks, and best practices in AI delivery.


Qualifications:


  • 5+ years of experience in AI/ML engineering, including production deployment of ML models.

  • Strong programming skills in Python and experience with ML frameworks (PyTorch, TensorFlow, Scikit-learn).

  • Solid understanding of NLP techniques and hands-on experience with multilingual or document-based pipelines.

  • Experience working with cloud platforms (Azure, GCP) and hybrid/on-prem environments.

  • Familiarity with model monitoring, versioning, and lifecycle management.

  • Excellent communication and collaboration skills in cross-functional teams.


Joining us you will:


  • Make a real difference – Challenge yourself and see how your work contributes to meaningful results for our clients and team.
  • Be part of a strong team – Work in a culture that celebrates teamwork, trust, and open communication at every level.
  • Grow with us – We invest in your development with tailored learning programs, certifications, and growth opportunities.
  • Work internationally – Collaborate with diverse teams and partners across Europe.
  • Enjoy flexibility – Benefit from flexible hours and the option to work from home.
  • Take care of yourself – Enjoy 25 days of paid annual leave and additional health insurance.
  • Be empowered – Your initiative, ideas, and creativity are always welcome. We recognize and reward a job well done.

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