Senior FullStack engineer (AI-First)

About Fulcrum: We’re a team of tech-savvy, creative & passionate IT professionals. We’ve created a vibrant and performance-driven culture for ourselves where everyone is free to think & act outside the box. There are literally no limits to what you can do here, as long as we WOW our clients and OVER deliver what we promise.

Our client is a UK-based product company working on an AI-driven platform that acts as a personal assistant capable of interacting with users and integrating with external tools such as email and other services.

The product is currently being built from scratch in an R&D environment with a strong focus on AI agents, rapid prototyping, and fast iteration.

We are looking for a Full-Stack Engineer (AI-First) who will help build the MVP and shape the technical foundation of the product.

The role combines full-stack development with AI-driven workflows. The engineer will design and implement core product functionality, integrate LLM-based capabilities, and orchestrate AI-driven pipelines.

The position requires a high level of ownership and comfort working in a fast-paced startup environment



Team composition - Product Owner, Full-Stack Engineer, Designer and QA

- Experience working with multi-agent systems (agent orchestration, task delegation, agent-to-agent communication)
- Experience building RAG pipelines and working with vector databases (pgvector, Pinecone, Weaviate, SurrealDB vector)
- Experience integrating MCP (Model Context Protocol) servers or building extensible agent tools
- Experience with real-time communication (Server-Sent Events, WebSockets, Redis Pub/Sub)
- Experience with browser automation tools such as Playwright or Puppeteer
- Experience deploying applications in container-based cloud environments (Railway or similar platforms)
- Experience building modern UI systems using Tailwind and component libraries (e.g., shadcn/ui)

• Recruiter interview (40 min)

• Technical interview

• Final interview with PO and CTO
  
  
  
  What we offer:
  
  - Flexible schedule & opportunity to work remotely or workspace in Kyiv (kooperativ.cc);
  - Friendly & open team who have fun creating cool projects together;
  - Opportunity to boost your professional & personal growth;
  - Regular team gathering activities;
  - 20 business days of paid vacation + UA national holidays;
  - Medical insurance full coverage;
  - 10 + 5 days paid sick leave;