AI Engineer (LLM & LangChain)

Client: Instantly.ai — a fast-growing SaaS startup in AI-powered outbound automation (35,000+ B2B users worldwide).
Location: Remote (preferably Europe)
Engagement: Full-time
Language: English (working proficiency required)

About the product

Instantly SuperSearch is an AI-driven engine for lead discovery and enrichment. The team is now looking for a hands-on AI Engineer to own and evolve the AI infrastructure behind the product — from multi-agent architectures to LLM-based workflows using LangGraph and LangChain.

This is a strategic role with real ownership, ideal for someone who enjoys building fast, experimenting with cutting-edge tools, and working at the core of a modern AI product.

Key Requirements:

• Experience building AI-powered features in real-world applications (MVPs or production);

• Strong expertise in prompt engineering and working with LLMs in production;

• Fluency in Python and JavaScript (Node.js + React.js);

• Hands-on experience with OpenAI, Claude, or other LLM APIs;

• Proficiency in LangChain and/or LangGraph: agents, chains, memory, tools, workflows;

• Startup mindset — autonomous, fast-moving, and impact-driven;

• Product thinking — understands business implications of tech decisions.

Nice to have:

• Experience or strong interest in outbound/email automation, sales tech, or lead generation;

• Understanding of semantic search, embeddings, agent orchestration, and RAG pipelines.
  
  

Responsibilities:

• Build and optimize AI-powered features inside the core platform;

• Design and refine LangGraph workflows and multi-agent architectures;

• Experiment with the latest tools, models, and agent frameworks;

• Collaborate with backend and frontend engineers to deliver seamless integrations;

• Contribute to product ideation, iteration, and roadmap development;

• Take ownership of performance, scalability, and maintainability of AI components.
  
  

What the company offers:

• Opportunity to work with a high-impact AI product used by 35K+ B2B companies;

• Full ownership of mission-critical AI workflows and architecture;

• Rapid iteration cycles, minimal bureaucracy, and freedom to experiment;

• Competitive compensation (base + potential equity);

• Remote-first team, async-friendly culture, flexible hours;

• Growth opportunities within a global SaaS company.

Hiring process:

1. 30-minute screening call with our technical recruiter (agency);

2. Short take-home challenge (~1 hour);

3. Interview with Instantly’s AI & Automation Team Lead;

4. Live coding and technical deep-dive;

Final cultural/values interview with the leadership team.