AI Vibe Coder
Budget: -
HOURLY / FULL_TIME
⭐ 4.21 (333)
Japan
software-debugging
Let's be clear up front: this is not about pretty landing pages or
front-end mockups. I build full enterprise-grade products — real
backends, data layers, integrations, auth, infrastructure, the hard
stuff that has to actually work under load and not break.
Here's what's possible with the right approach: I recently built a
product that a team of 53 engineers spent 3 years building — except theirs was buggy, slow, and constantly breaking. I built a superior, production-grade version myself in one month.
That's 159 engineer-months of work, done in 1.
I do it by building on my own stack — assembled from open-source AI infrastructure, agent runtimes, and tooling I've wired together — orchestrating AI agents and the best open components instead of hand-typing every line.
I need someone who already works this way — ideally faster and sharper than me — who can plug into my stack and build serious systems at this velocity.
If you only do front-end vibe pages, this isn't for you. If you can
architect and ship complete enterprise systems — fast — using agents, pipelines, and open-source building blocks, keep reading.
What You'll Do
- Architect and ship enterprise-grade products end to end: backends, databases, APIs, integrations, auth, infrastructure — not just UI.
- Build in a fast-moving codebase using AI-native development and a self-hosted, open-source–based agent stack.
- Integrate and adapt open-source AI infrastructure — agent runtimes, LLM observability, memory/RAG systems, local and self-hosted model tooling.
- Take loosely-specified goals and drive them to working, verified, production-ready code — design, implement, test, iterate — with minimal hand-holding.
- Replace what would normally take a team — and do it cleaner: solid architecture, clean commits, real tests, no silent technical debt.
- Improve the stack and workflow itself — better orchestration,
better automation, better leverage.
You Must Have
- Proven, extreme-velocity AI-assisted development on real systems —
not toy apps or templates. Show me what you've shipped and how fast.
I'm not impressed by "10x" — I'm looking for people who collapse team-years into days on production-grade software.
- Real engineering depth. System design, data modeling, APIs, state management, performance, security — you understand what makes enterprise software hold up, not just look good.
- Strong fundamentals. You can read and debug code you didn't write.
AI accelerates you; it doesn't replace your judgment.
- Comfort assembling open-source components: self-hosting services,
wiring APIs together, making independent tools work as one system.
- Full-stack fluency: TypeScript/Node, Python, Git, APIs, databases, deployment.
- Agent/LLM literacy: tool use, prompt engineering, RAG, multi-agent patterns, model selection (including open-weight and local models).
- Bias to ship. You verify your work (tests, actually running the
app) before claiming it's done. Speed and reliability — the
incumbents were fast at neither.
Bonus Points
- Experience self-hosting agent frameworks, LLM observability, vector stores, or local model inference.
- You've built your own automations, agent pipelines, or custom
tooling on top of open-source.
- You've shipped or maintained software at real scale and can speak to what broke and why.
How to Apply (filters out the noise)
Don't send a generic proposal. In your first message:
1. Link to the most complex, real system you've built fast — repo, demo, or video. Front-end-only portfolios will be passed over.
2. Tell me your exact stack/workflow: which open-source tools you use and how you orchestrate them.
3. One sentence: the most ambitious thing you've built solo, and how long it took.
Applications without these three things get ignored.
1. Core Engineering (non-negotiable)
These are the fundamentals that separate "ships real systems" from "ships demos."
- System architecture & design — service boundaries, data flow, choosing the right pattern for the job, designing for change.
- Backend engineering — APIs (REST/GraphQL), business logic, background jobs, queues, caching.
- Data layer — relational (Postgres) + NoSQL, schema/data modeling, migrations, query performance, transactions.
- Auth & security — authentication/authorization, secrets management, input validation, common vuln classes (the stuff enterprise buyers audit for).
- Full-stack fluency — TypeScript/Node and Python at minimum; able to do front-end when needed but not only front-end.
- Testing & verification — unit/integration/e2e, actually running the app before declaring done.
- Git & version control discipline — clean commits, branching, code review hygiene.
2. AI-Native Development (the differentiator)
This is what makes the velocity possible. Without this, they're just a normal good engineer.
- AI-orchestrated coding workflow — power user of agentic coding, not a casual prompter; knows how to drive an agent to a correct result and catch when it's wrong.
- Prompt engineering — structured prompts, context management,
getting reliable output from models.
- Multi-agent orchestration — chaining/parallelizing agents,
pipelines, task decomposition, verification loops.
- Tool use / function calling — wiring models to real tools and APIs.
- RAG & memory systems — vector stores, embeddings, retrieval design, knowledge/context management.
- Model selection & tradeoffs — knowing which model for which task, including open-weight and local models.
3. Infrastructure & Open-Source Integration (your stack-specific
need)
This is the part that's unique to how you work — assembling a stack rather than renting one.
- Self-hosting & DevOps — Docker, deployment, environment config, running services yourself.
- Open-source integration — reading unfamiliar codebases,
adapting/forking OSS, making independent tools work as one system.
- Agent runtimes — experience with self-hosted agent frameworks.
- LLM observability — tracing, logging, dashboards (e.g. self-hosted observability tooling).
- Local model inference — running open-weight models locally,
quantization, serving.
- API/service glue — connecting third-party and internal services reliably.
4. Judgment & Working Style (what makes it enterprise-grade and not a
mess)
Easy to overlook, but this is what separates "fast and breaks
everything" from your actual result.
- Debugging code they didn't write — including AI-generated code; can find the silent failure.
- Knowing when AI is wrong — healthy skepticism, verification
instinct, doesn't ship hallucinated logic.
- Bias to ship + bias to correctness simultaneously — speed without leaving technical debt landmines.
- Working from loose specs — turns vague intent into the right thing without hand-holding.
- Self-direction — operates independently at high velocity; doesn't need to be managed task-by-task.
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