Senior AI NodeJS Engineer

Hi there

We are Tooploox , a Solvd Inc. company.

We create AI-powered products and services that make a real difference. Our team of nearly 200 specialists - including a 40+ person R&D team with many PhDs - has pioneered AI solutions across industries from healthcare to e-commerce. We’ve published research in top-tier venues like NeurIPS and ICML, while delivering real-world applications that help our clients innovate and scale.

Now, as part of Solvd Inc., we’re building on our strengths with even greater global reach and resources - while keeping the creative, human-scale culture that defines us here in Poland. If you want to work on meaningful AI projects, with space to grow and the freedom to innovate, you’ll feel right at home.

We are seeking a dynamic and motivated Senior AI NodeJS Engineer with a strong focus on developing AI Agents. If you have an understanding of AI technologies and thrive on applying diverse tech stacks to build innovative solutions, we want to hear from you. This role involves not only technical expertise but also collaboration with clients to understand and refine project requirements.

Feel invited

What you will do:

• Collaborate with cross-functional teams to design and build AI Agentic solutions.

• Contribute to defining technical requirements and implementing features across the software lifecycle - from proof of concept through implementation to evaluation and production.

• Take ownership of assigned tasks and deliver high-quality, maintainable code.

• Manage backend tasks while contributing to frontend development.

• Stay informed about trends and advancements in AI and related fields, continuously learning and integrating new knowledge.

• Employ a pragmatic, evaluation-driven approach to adopting innovative AI solutions.

Experience and skills you need to join us:

• Experience in full-stack development using mainly NodeJS (with TypeScript).

• At least 1 year of experience in AI Engineering role.

• Versatile in technology use, comfortable working across backend and frontend tasks.

• Track record in staying current with AI and Agentic technologies, including best practices and architecture.

• Openness to client collaboration, fostering clear communication and effective partnership.

• Strong commitment to learning new technologies and swiftly adapting to new products and APIs.

• Understanding of Retrieval-Augmented Generation (RAG) and its applications.

• Familiarity with Multi-Agents concept, tools usage and MCP Servers.

• Hands-on experience with LLM APIs/SDKs (e.g., OpenAI, Anthropic).

• Knowledge of LLM orchestration and frameworks like Langchain or LlamaIndex, with practical implementation experience.

• Understanding of prompt design principles and an ability to create effective prompts.

• Experience configuring services on cloud platforms (e.g. AWS, Azure, GCP).

• Basic experience with CI/CD pipelines and DevOps best practices.

• Competence in REST API usage and efficient database integration.

• Fluency in English language

• Fluency in Polish (nice to have)

It would be great if you also have:

• Basic knowledge of machine learning principles.

• Understanding Python source code.

• Experience with React.

• Experience with model fine-tuning and distillation.

• Familiarity with LLM evaluation.

• Experience with Model Context Protocol (MCP).

• Experience with graph databases.

• Familiarity with other programming languages and frameworks.

• Familiarity with Voice Agents concepts and related frameworks e.g. Pipecat.

What we offer:

️ 26 days of annual service break.

An additional pool of 14 days per year paid at 80% of your standard rate.

English lessons once a week or more frequently, depending on your needs.

Access to a curated library of books and e-books, regularly updated based on employee suggestions, plus recurring knowledge-sharing initiatives.

Flexible hours and the option to work 100% remotely or from one of our offices in Wrocław or Warsaw.

Top-quality equipment – we provide MacBooks, new monitors, noise-cancelling headphones, and any additional gear you may need to work

comfortably.

Group insurance with Warta and private medical care with Enel-Med for just 1 PLN.

Mental health support – we offer access to a psychologist with fully anonymous consultations if needed.

️‍♂️ Multisport card (we cover most of the cost – your contribution is currently no more than 45 PLN, or less depending on the selected package), access

to gyms in our Wrocław and Warsaw offices, and sports initiatives like the annual Bike 2 Work Challenge.

We host team lunches, webinars, game nights, and social events. We enjoy the occasional barbecue, dance party, time on the terrace, foosball,

or PlayStation session.

Join us and shape the future of AI while working the way you like