Engineering Remote · Argentina Paid in USD Full-time

Semi-Senior Software Engineer

The people who decide where billions go run on software someone has to write well. You'd build the APIs, the agents and the integrations that turn scattered market data into a decision an investor can defend. Backend first, generalist when the work asks for it.

Backend features end to end, API to integration

Experience

3–5+ years backend, owning real features

Compensation

USD, discussed on call 1

Process

Node.js / TypeScript Python Cloud architecture & infrastructure (AWS, Azure or GCP) SST / Terraform AI frameworks: LangGraph, LangChain, CrewAI, SageMaker AI agents: AI SDK, Mastra, Hermes Agent, Google ADK LLM providers & gateways: OpenAI / Anthropic SDK, OpenRouter, Vercel AI Gateway Next.js / React SQL / NoSQL Nice: Snowflake, streaming infrastructure

Fit check

Tick what's true. We'll tell you straight.

Nothing is sent anywhere. This is for you, not us. Six statements, honest answer only.

Intelligence APIs, automated workflows, AI agents that read investment memos.



Most of the time goes into working out what the right thing is before writing it. The code is what a good thought process leaves behind.

Integrations

Affinity, PitchBook, Harmonic and the rest. Real integrations that hold up, not duct tape with a retry on top.

With users

Calls with the people using what you built: analysts, ops leads, partners. You hear the complaint first-hand, not through a ticket.

Review

Reading other people's code and having yours read, and then checking that what shipped actually works for the person who asked for it. The diff is the smaller half.

Three things you ship in your first year

An intelligence API a fund opens every morning

Market data in, actionable signal out. Owned by you from the schema to the endpoint the client calls.

An AI agent that earns its place in the workflow

Reads memos and deal data, surfaces what a partner should look at twice. Useful, not a demo.

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📌 Semi-Senior Software Engineer (Buenos Aires)
🏢 Loop3
📍 Buenos Aires