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 :

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

Short take-home challenge (~1 hour);

Interview with Instantly’s AI & Automation Team Lead;

Live coding and technical deep-dive;

Final cultural / values interview with the leadership team.