Senior Full-Stack AI Engineer

English Level: B2-C1Project 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.