Senior Aws Node.Js Architect For Low-Latency Systems

Bluelight Consulting; Neuquén; A distancia; ARS 181.094.000 - 271.641.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

100% remote work

Contractor agreement with payment in 1

English classes

Learning platforms access

Descripción de la vacante

Darwoft is hiring a Senior AI Engineer to join a fast-growing fintech project focusing on an AI-powered conversational platform. You will design, build, and scale agentic systems and multi-agent architectures in production, enabling autonomous reasoning, planning, and actions across complex workflows.

You will work remotely with LATAM flexibility, contributing to production-grade AI systems and collaborating with cross-functional teams to deliver impactful financial operations solutions.

Formación

• Minimum 5+ years in professional software development.
• 2+ years deploying AI/Generative AI in production.
• Proficient in Python and modern AI toolchains.
• Strong experience with LLMs, agentic frameworks, and memory/state management.
• Familiarity with vector databases and RAG architectures.
• Solid software engineering fundamentals: Git, testing, CI/CD.
• Excellent English communication in a fully remote setting.

Responsabilidades

• Design, build, test, and deploy autonomous AI agents using Python and modern agentic frameworks.
• Develop LLM-based systems enabling reasoning, planning, and execution across multi-step workflows.
• Implement Retrieval-Augmented Generation (RAG) pipelines with vector databases.
• Integrate AI agents with internal services and production systems with cross-functional teams.
• Build evaluation, monitoring, and optimization pipelines for LLM-powered systems.
• Apply advanced prompt engineering and tool/function calling to enhance agent capabilities.
• Stay up-to-date with Generative AI advancements and apply best practices to production.

Conocimientos

Python

LLMs & agentic frameworks

Agentic systems

Vector databases

Git

Testing & CI/CD

English communication

Herramientas

OpenAI SDK

LangChain

LlamaIndex

CrewAI

Descripción del empleo

Disclaimer – Must read: Commitment & Focus
This role requires full-time dedication, with clear priority given to Darwoft projects during the established working hours.
It is not compatible with other full-time professional engagements.
Any additional professional activities must be disclosed in advance and must not interfere with the responsibilities or working hours of this role.

Location: Anywhere in LATAM
Job Type: Remote
Project: Fintech Conversational AI Platform
Time Zone: Flexible within LATAM
English Level: B2 / C1

Get to Know Us – Darwoft

At Darwoft, we build digital products with heart. Were a Latin American tech company focused on creating impactful, human-centered software in partnership with clients around the world. Our remote-first culture is rooted in trust, continuous learning, and collaboration.

But above all, Darwoft is a place defined by adaptability. Growth isnt optional here — its part of how we operate. Theres no stagnation or comfort zone; instead, youll find a genuine and sometimes rare openness to change. The company provides the challenges and opportunities needed to grow, along with the support to take them on.

Leadership inspires by example without expecting imitation — authenticity matters deeply to us. Flexibility is in our DNA. It empowers us to make smart decisions and, more importantly, to question and improve them as processes naturally evolve over time.

Darwoft has a vibrant, genuine culture — one that reflects our crew, not just a statement of intent.

If you're looking to join a team where your ideas matter and your impact is real, welcome to Darwoft.

About the Role – AI Engineer (Agentic Systems / LLMs)

We're partnering with a fast-growing fintech project focused on building an AI-powered conversational platform used by thousands of users in the United States. The product goes far beyond traditional chatbots, leveraging Large Language Models (LLMs) and autonomous AI agents to handle complex, multi-step workflows related to financial operations.

Were looking for a Senior AI Engineer to join a core AI initiative, working hands-on on the design, development, and scaling of agentic systems in production. In this role, youll help evolve conversational experiences into advanced multi-agent architectures capable of reasoning, planning, and executing actions autonomously.

Your work will have direct impact on real users and real business outcomes.

What Youll Be Doing

• Design, build, test, and deploy autonomous AI agents using Python and modern agentic frameworks.
• Develop LLM-based systems that go beyond simple Q&A, enabling reasoning, planning, and execution across multi-step workflows.
• Implement Retrieval-Augmented Generation (RAG) pipelines using vector databases to ensure accurate, grounded responses.
• Integrate AI agents with internal services, APIs, and production systems in collaboration with engineering and product teams.
• Build evaluation, monitoring, and optimization pipelines for LLM-powered systems, focusing on accuracy, latency, reliability, and cost.
• Apply advanced prompt engineering techniques and tool/function calling to enhance agent capabilities.
• Stay current with the latest advancements in Generative AI, LLMs, and agentic architectures, applying best practices to production systems.

What You Bring

• 5+ years of experience in professional software development.
• 2+ years of hands-on experience building and deploying AI / Generative AI solutions in production.
• Strong proficiency in Python.
• Solid experience working with LLMs and agentic frameworks (OpenAI SDK, LangChain, LlamaIndex, CrewAI, or similar).
• Proven experience with agentic systems, including memory/state management and multi-agent workflows.
• Experience working with vector databases and RAG-based architectures.
• Strong understanding of software engineering fundamentals: Git, testing, CI/CD pipelines.
• Ability to translate business requirements into scalable, maintainable technical solutions.
• Strong communication skills in English within a fully remote environment.

Nice to Have

• Experience in fintech, payments, fraud detection, or financial platforms.
• Experience evaluating and optimizing LLM systems in production (A/B testing, observability).
• Contributions to open-source projects or public technical repositories.
• Experience working in fast-paced, high-growth product environments.

What Darwoft Offers (Contractor)

• Contractor agreement with payment in USD
• 100% remote work
• Argentinas public holidays
• English classesReferral program
• Access to learning platforms