Evnek

Fullstack Engineer

Evnek

contract

Posted on:

Location Type: Remote

Location: United States

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Tech Stack

ReactRubyRuby on Rails

About the role

  • Lead and own end-to-end development of AI-driven products using Ruby and React, collaborating closely with product and design teams.
  • Rapidly prototype, build, and iterate on features with extremely fast turnarounds (days, not weeks).
  • Develop intelligent workflows and integrations leveraging LangChain, LLM frameworks, vector DBs, and embeddings.
  • Implement clean, efficient architectures without unnecessary API layers—favoring direct, smart integration.
  • Deliver high-impact, user-facing features that will be used by thousands globally.

Requirements

  • 5+ years of experience in IT Services
  • 4+ years of experience in Fullstack development
  • Product-driven mindset: Ability to make quick tactical decisions with a strong focus on product outcomes, not just code quality.
  • Hands-on LangChain experience: Proven experience building real features or products using LangChain and strong familiarity with the LLM ecosystem.
  • AI chatbot expertise: Experience working on AI chatbots, agents, vector databases, embeddings, and prompt engineering.
  • AI product launch experience: Successfully launched at least one AI-powered product, ideally LLM-based.
  • Fullstack proficiency: Strong skills across both backend and frontend— Ruby/Ruby on Rails (or willingness to quickly adapt) and React.
  • Zero-API mindset: Comfortable working across the stack with minimal abstractions and without reliance on heavy API layers.
  • Ownership mentality: Self-starter who thrives in unstructured environments and takes accountability for end-to-end delivery.
Benefits
  • No benefits explicitly stated
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
RubyReactLangChainLLM frameworksvector databasesembeddingsAI chatbot developmentprompt engineeringfullstack developmentclean architecture
Soft Skills
product-driven mindsettactical decision makingownership mentalityself-starteraccountabilitycollaborationadaptabilityfocus on product outcomesthrive in unstructured environmentsquick iteration