Junior-Middle Backend Developer (Node.js, LLM/RAG, MCP, AI agents)

Job description

We are looking for a Junior-Middle Backend Developer to join a fast-growing start-up developing a product for automated lead generation and recruitment outreach.

Responsibilities:

- Day-to-day product implementation.

- Develop integrations with AI (e.g., Perplexity, OpenAI) & 3rd party API (e.g., CRMs).

- Leverage your prompt engineering skills to maximize the outcome.

- Customer discovery. That includes: internal product conversations, as well as joining some customer calls (Maybe not from day one, but definitely later on).

Requirements:

- At least 1 year of experience working in a product company/startup.

- 1-3 years of software development experience.

- Experience with Node.js, TypeScript, JSON, REST API, Git.

- Experience in LLM/RAG, MCP, and AI agent development and prompt engineering.

- Database design and optimization (SQL).

- Development in cloud infrastructure (AWS/GCP/Azure).

- Patterns for asynchronous task processing (RabbitMQ, SQS, or similar).

- Experience with n8n/make will be a great plus.

- Excellent verbal communication skills.

- Excellent English, minimum B2 level.

- Absolutely customer-centric and flexible in a dynamic environment (i.e., fully tolerant of shifting priorities daily).

Job details:

- Full-time.

- Fully remote.

- Long-term.

- B2B contract.

- Start date — ideally ASAP, but negotiable.

What else will you get:

- Learning how a startup grows.

- Direct impact on product and company strategy.

- Deliver value directly to paying B2B clients.

- You will work with the most modern toolset (including Cursor in Agent mode).

The hiring process:

- 30-45 min pre-screen interview with a recruitment manager.

- 30 min call with the client.

- A technical deep-dive interview, most likely with online coding (conducted by the client).