We are seeking an engineer who is ready to become the technical backbone of our new internal AI product. This is a startup project where not only deep technical expertise is essential, but also flexibility in thinking, decision-making speed, and adaptability to changing priorities based on product development needs.
Initially, you will analyse the existing MVP, expand its architecture, implement critical business functions, and integrate external systems. Upon achieving success, you will transition into the role of Technical Lead with the opportunity to assemble your own team.
We need a responsible, agile, and holistic thinker who wants to contribute to developing something significant and genuinely useful for the world.
Tech Stack
- Programming Language: Python
- Frameworks: FastAPI (priority), Flask
- AI/LLM: OpenAI API (chat, functions, assistants, context, memory)
- Integrations & Automation: REST API, Slack API, GraphQL, Selenium, Playwright
- Vector Databases (preferred): FAISS, Pinecone, Weaviate
- AI Libraries (preferred): LangChain, LlamaIndex
- Databases: PostgreSQL, MongoDB
- DevOps/Infrastructure: Docker, GitHub Actions, CI/CD pipelines, deployment on VPS / GCP / AWS
Requirements
- Profound knowledge of OpenAI API, including handling functions, instructions, agents, memory, and contexts
- Understanding and experience with microservices architecture
- Experience integrating external services via APIs
- Basic DevOps skills: environment setup, CI/CD, deployment, log management
- Ability to work autonomously, think critically, and rapidly test ideas
- Initiative and adaptability in a startup environment
Will be a plus
- Experience building AI products or agents based on LLM
- Experience working with Slack API or other chat platforms (bots, integrations, automation)
- Knowledge and practical experience with vector databases and Retrieval-Augmented Generation (RAG)
- Practical use of LangChain, LlamaIndex, or similar frameworks
- Understanding of knowledge graphs, contextual queries, and embedding pipelines
- Experience forming technical teams or mentorship
What we offer
- Direct collaboration with the founder and technical visionary of the project (creating the product from scratch, full transparency in decision-making and data)
- Hybrid work format: Remote with occasional face-to-face 1-on-1 sessions in Kyiv office (intensive discussions, architecture sessions, reviews), more frequently in-office at the beginning
- Real impact on product and technology platform: you will shape technical approaches, frameworks, and architecture alongside the founder
- Growth opportunities toward Technical Lead or CTO roles, with prospects of building your own team
About us
Newxel is a global one-stop-shop that offers a multitude of R&D services to scale companies’ capacities. For many years, Newxel has been helping enterprises and innovative startups from various regions and sectors to set up their software development teams and R&D offices in Europe.
Our services are architected upon the principles of transparency and flexibility reinforced by our competence and vast expertise, 250+ tech talents on board, and over 40+ clients we serve. Today Newxel has representative offices in Europe, The US, Israel, and several development sites in Ukraine.
