# Senior Full-Stack AI Engineer

> Workana · Buenos Aires, Argentina (Remote) · Contract · Posted 2026-01-20

**Workplace:** remote

**Department:** Very Big Things

## Description

**English Level:** B2-C1  
**Project Lenght**: 3-4 months (with big opportunities to extend)  
**Location:** Remote; must overlap **U.S. Eastern Time**. Occasional client meetings.

**About Our Client**  
Workana has is looking for a **Senior Full-Stack AI Engineer** for an AI-native consulting and implementation partner. They help mid-market and enterprise clients modernize critical workflows using Gen-AI, automation, and cloud platforms. They operate with small, senior teams and ship production-ready systems fast, typically live in **8–12 weeks**, secure and auditable.

**The Role**  
We are looking for a someone who can **own delivery**, not just execute tickets.  
This role is for you if you:

-   Can take ambiguous requirements and turn them into working systems
-   Are comfortable being the most senior engineer on a stream
-   Move fast without sacrificing production quality
-   Have shipped real AI features, not demos

You’ll work closely with a strategist and other senior engineers to design, build, and harden AI-enabled products for real clients.  
This is **hands-on delivery work**. No ivory-tower architecture. No babysitting juniors. You build, decide, and ship.

**What You’ll Do**

-   **Own end-to-end delivery:** Design and build full-stack features from UI to backend to deployment.
-   **Ship real AI systems:** Implement RAG, tool-calling, agent workflows, structured prompting, evals, and guardrails.
-   **Move fast, responsibly:** Prototype quickly, then harden for security, reliability, and cost control.
-   **Use AI as a force multiplier:** Work fluently with tools like Cursor, Claude Code, Windsurf, or Copilot to accelerate delivery while maintaining code quality.
-   **Make technical calls:** Choose patterns, trade-offs, and scope boundaries without waiting for permission.
-   **Collaborate tightly:** Work directly with strategists, clients, and other senior engineers to unblock progress.
-   **Light DevOps ownership:** Configure environments, CI/CD, secrets, and deployments (with support when complexity grows).

## Requirements

-   6–8+ years building production software across front-end and back-end.

-   Hands-on Gen-AI experience in real products (not just experiments).
-   Strong command of JavaScript / TypeScript.
-   Proven experience with modern stacks such as:
-   React / Next.js
-   Node.js (Nest, Express, or similar)
-   Typescript
-   SQL databases (Postgres), caches, and vector stores

-   Comfort designing secure, production-grade systems: Auth (RBAC), secrets, auditability, PII-aware data handling
-   Cloud experience (AWS, GCP, Azure, or Vercel) and CI/CD fundamentals.
-   Clear communicator who can explain trade-offs to non-engineers.

-   Comfortable working embedded with a client team.

**Nice to have (not required):**

-   Experience in **retail, hospitality, logistics, healthcare, or regulated environments**
-   Prior consulting or agency delivery experience

## Benefits

-   Full-time, long-term potential: initial 3–4 month engagement with strong chances to extend and join future VBT projects.

-   Remote & nearshore-friendly: work from LATAM with 4–5 hours overlap with U.S. Eastern Time.
-   Senior ownership: real autonomy, real decision-making, end-to-end delivery
-   Work on production AI: ship real Gen-AI features for mid-market and enterprise clients (not demos).
-   Fast, high-trust teams: small senior squads, direct collaboration with strategists, engineers, and client stakeholders.
-   Modern stack: TypeScript-first, modern full-stack delivery (React/Next.js, Node.js) with AI tooling in the workflow.
-   Clear scope & accountability: time & materials model, **tracked hours\***, and direct impact on outcomes.
-   English practice in real client settings: collaborate with U.S.-based stakeholders (B2–C1 required).

**\*Note**: This role requires logging hours in our internal time tracking tool.

## Apply

[Apply at Workana](https://apply.workable.com/workana-premium/j/34D1535DFD/apply)

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