Senior Backend Tech Lead - AI-Driven (Remote)

FullStack; Mar del Plata; Remote; ARS 182,485,000 - 273,727,000; Full time

Benefits offered by this job

100% remote work

Opportunities to work with startups &

Continuing education

Competitive pay

Job summary

FullStack is seeking a Senior Backend Engineer Tech Lead to join our client’s team on a 3-4 month project, working remotely with US-based clients. You will integrate with designers and engineers daily to drive backend architecture.

Requirements include 6+ years of professional software engineering, 2+ years in technical leadership, advanced English, a four-year degree, and expertise in Node.js, TypeScript, AWS, MongoDB, and scalable microservices.

Qualifications

• 6+ years of professional software engineering experience.
• 2+ years of technical leadership influencing architecture and engineering direction.
• Advanced English is required.
• Successful completion of a four-year college degree is required.
• Expertise in Node.js and TypeScript.
• Experience with AWS services (EC2, ECS, Lambda, ElastiCache, S3, CloudFront).
• Solid background in MongoDB and optimizing backend deployment pipelines.
• Experience with Salesforce OCAPI/API and CMS-driven content management.
• Strong history of designing scalable microservices and event-driven architectures for high-scale e-commerce systems.
• Experience with AI development tools (LLM integration LangChain or LlamaIndex) and agentic workflows.

Responsibilities

• Integrate into client teams and collaborate with designers and engineers on a daily basis.
• Help architect and implement backend systems to support high-scale e-commerce platforms.
• Lead technical decisions and mentor junior engineers within the project.

Skills

Node.js

TypeScript

AWS

MongoDB

Microservices

BFF architecture

API middleware

Agile/Scrum

CI/CD

LangChain

Education

Bachelor's degree

Tools

Salesforce OCAPI

LangChain

LlamaIndex

Copilot CLI

Job description

FullStack is seeking a Senior Backend Engineer Tech Lead to join our client’s team on a 3-4 month project, working remotely with US-based clients. You will integrate with designers and engineers daily to drive backend architecture.

Requirements include 6+ years of professional software engineering, 2+ years in technical leadership, advanced English, a four-year degree, and expertise in Node.js, TypeScript, AWS, MongoDB, and scalable microservices.