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OneSeven Tech (OST)

AI/LLM Engineer — Python, LangChain, RAG, AWS Lambda

OneSeven Tech (OST)
Argentina · Full-time · Entry

Project Brief

We're building AI-powered products, primarily leveraging off-the-shelf LLM APIs, while also partnering with our Applied Science teams to integrate custom models when needed. You'll own end-to-end development of AI features — from prototyping to production — focused on reliability, accuracy, and scalable delivery.

Must-Haves

  • Strong Python engineering skills and experience delivering production systems
  • Hands-on experience building with LLM APIs (OpenAI, Anthropic, etc.) and deploying AI features end-to-end
  • Experience with LangChain / LangGraph — including Prompt Engineering, Token Management, and Agent creation with tool-based workflows
  • Experience building agentic workflows (tool use, routing, memory, safety/guardrails), ideally with MCP
  • Solid understanding of RAG concepts — retrieval, chunking, embeddings, re-ranking, and evaluation
  • Practical AWS experience, especially AWS Lambda and serverless architecture patterns
  • Backend engineering experience: RESTful API design, webhook integration, JWT, pytest, and observability tools like Sentry
  • Experience doing Git repository analysis — understanding large codebases, debugging, refactors, and code health
  • Comfortable working in fast-moving product environments with high ownership

Nice to Have

  • NextJS and TypeScript for frontend components and integration
  • AWS CDK for infrastructure-as-code and deployment
  • Broader AWS services knowledge: S3, CloudWatch, IAM, API Gateway
  • Experience with NoSQL databases
  • Experience integrating or serving custom models (inference, model endpoints, monitoring)
  • Familiarity with evaluation frameworks (offline tests, human feedback loops, regression suites)
  • Strong software engineering fundamentals: testing, CI/CD, observability, performance

What You Will Do

  • Plan and develop applications that include custom AI components — orchestration, evaluation, tooling, and integrations
  • Build intelligent agents using LLMs and the MCP framework to enable context-aware automation and decision-making
  • Automate internal workflows and operational processes using Python and AWS Lambda
  • Develop and improve RAG-based chatbots to increase response accuracy, grounding, and consistency
  • Collaborate with Applied Science teams to productionize custom models and connect them with product systems
  • Design and maintain multi-agent AI pipelines, including fallback and graceful degradation strategies for reliability

Why You'll Want This Role

  • 🚀 First engineering hire — Shape the technical foundation of a rapidly growing product. Your decisions set the standard.
  • 📈 Massive market opportunity — Tech debt affects $3 trillion globally, with 41% created by AI. You'll be building the tools that solve it.
  • 💡 Real impact — Help companies save millions in development costs through cutting-edge AI/ML solutions.
  • 🔝 Direct path to technical leadership — This is a ground-floor opportunity with clear growth into a senior or lead engineering role.

Benefits & Compensation

  • 💵 $2,000 – $4,500/month — paid in USD, bi-weekly via Deel
  • 🌎 Fully Remote — work from anywhere in Latin America
  • 📄 Full-time contract with a U.S. company — 6-month initial term, full-time conversion
  • 🏖️ Paid PTO — competitive package, grows with tenure
  • 🤝 Referral Program — earn a bonus for referring talent that gets hired
  • 📈 Be an early employee at a fast-growing startup with direct path to technical leadership

To Apply

Please send your resume in English.

Include The Following

  • 🔗 LinkedIn Profile URL (required)
  • 💻 GitHub Portfolio — show us your best work (required)
  • 🌐 Live Project Examples — applications or tools you've built (encouraged)
  • ✉️ Cover Letter — tell us why you're excited about this role (optional but encouraged)

About OneSeven Tech

Founded by James Sullivan, OneSeven Tech is a premier digital product agency serving startups and enterprises. Our clients have collectively raised over $100M in VC, and our enterprise partners include 2,000+ person hospitality groups and NASDAQ-listed companies.

We work fully remote, move fast with 1-week sprints, and focus on elegant solutions to complex problems.

Key Skills

Ranked by relevance

ai aws python prototyping typescript serverless nosql cicd git s3
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Posted
Mar 27, 2026
Type
Full-time
Level
Entry
Location
Argentina

Industries

Software Development

Categories

Engineering Information Technology

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