Web3 is a new paradigm

About IMPOSSIBLE

IMPOSSIBLE is a crypto investment platform. We focus on high-quality, fair, accessible opportunities for people around the world.

We try to make DeFi easier to use: investing more transparent, trading cheaper, and yield easier to reach. Through our accelerator and launchpad, we help new crypto projects come to market and give users deals we have actually looked at.

You will work across the group: IMPOSSIBLE, Rarible, and our AI company Impossibuild. The work sits in AI, crypto, DeFi, marketplaces, and whatever we build next.

The Role

We want an AI-native developer. Someone who uses AI as a serious way to ship, not someone who pastes a question into ChatGPT once in a while.

You have changed how you build around coding agents and modern tools, and you still have your own judgment. You can tell when the model is helping and when it is making a mess.

AI can write the code. You still own the engineering.

• Break a hard problem down and give the model the right context.
• Use coding agents on larger pieces of work, not just one-off snippets.
• Steer them when they assume the wrong thing or wander off.
• Read and challenge the code they produce.
• Debug it, test it, and check that it actually works.
• Make the architecture and product calls yourself.
• Know when AI is useful, and when you should just write it.
• Move faster without getting sloppy on security, reliability, or the next person who has to maintain it.

What you'll work on

Depending on the project, you might sit in IMPOSSIBLE, Rarible, Impossibuild, or another company in the group.

• Ship AI-powered product features.
• Build internal agents and tools that save people time.
• Put LLMs into frontend and backend systems.
• Build AI workflows for research, risk, trading, and ops.
• Work with wallets, smart contracts, and on-chain data.
• Build around DeFi, marketplaces, trading, and crypto infrastructure.
• Use AI to personalize how people use the product.
• Build retrieval systems, data pipelines, APIs, and automations.
• Try new models, agents, frameworks, and APIs.
• Improve prompts, context, evals, latency, cost, and reliability.
• Prototype quickly and ship new AI-native products.

What we're looking for

Shipping real products matters more than matching every item on this list. Crypto, blockchain, or DeFi experience is a plus. Strong engineers who can pick up the domain are welcome too.

Engineering

• Python
• TypeScript / JavaScript
• Go
• React / Next.js
• Node.js and backend frameworks
• APIs and services
• SQL and modern databases
• Cloud infrastructure
• Git, CI/CD, testing, monitoring, and building things that are safe to run

AI tools

• LLMs and LLM APIs
• AI coding agents
• Claude Code, Codex, Cursor, Copilot, or similar
• Agent frameworks and tool calling
• Vector databases and RAG
• Prompt and context engineering
• Eval and observability
• MCP and agent workflows

Proof of work, not just a resume

We care more about what you have built than where you worked or what degree you have.

Send projects, GitHub repos, live products, demos, open source, experiments, or write-ups.