AI Software Engineer (Full Stack) ID51390

AgileEngine
Municipality of Valencia, Spain
2 days ago

Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Working hours
Regular working hours
Languages
English
Experience level
Intermediate

Job location

Municipality of Valencia, Spain

Tech stack

API
Artificial Intelligence
Amazon Web Services (AWS)
Software Quality
Databases
Cursor (Graphical User Interface Elements)
Python
Performance Tuning
Systems Integration
Web Applications
Data Ingestion
Large Language Models
Multi-Agent Systems
Prompt Engineering
Reliability of Systems
Backend
Low Latency
HuggingFace
Front End Software Development
Go

Job description

We are looking for a Senior/Lead AI Software Engineer (Full Stack) to build and scale intelligent, AI-driven products from concept to production in rapid iteration cycles. This role is pivotal in architecting end-to-end AI solutions-leveraging LLMs, RAG pipelines, vector databases, and Rust or Golang-to power high-performance, low-latency applications. You'll shape scalable AI architectures, automate workflows, and drive innovation in a fast-growing environment that values ownership, speed, and technical excellence., Architect and develop robust, scalable AI-powered features across frontend and backend;

  • Design and implement end-to-end AI solutions, from data ingestion to model integration and user-facing interfaces;
  • Rapidly gather business and technical requirements and translate them into functional AI demos within 1-2 weeks;
  • Integrate LLMs and AI services (e.g., APIs, vector databases, RAG pipelines) into production-ready applications;
  • Work deeply in the existing web app codebase, enhancing core modules and integrating AI capabilities;
  • Architect high-throughput, low-latency systems that scale reliably;
  • Collaborate closely with Product, Design, and Engineering;
  • Maintain high standards for documentation, testing, observability, and code quality;
  • Lead technical initiatives to automate manual workflows using AI and improve system reliability.

Requirements

If you're looking for a place to grow, make an impact, and work with people who care, we'd love to meet you!, 5+ years of full-stack development experience;

  • Experience in Rust or Golang;
  • 2+ years of AI/ML engineering experience building or integrating AI-driven systems;
  • AI-assisted code experience with tools such as GH Copilot, Cursor, or Windsurf;
  • Proven ability to gather ambiguous requirements and independently develop AI prototypes/demos within short timelines (1-2 weeks);
  • Strong experience working with LLM APIs, prompt engineering, embeddings, and vector databases;
  • Experience designing scalable AI architectures (RAG, agents, model orchestration, evaluation pipelines);
  • Proven ability to navigate and improve large, production-scale codebases;
  • Strong understanding of performance optimization, system design, and low-latency architectures;
  • Excellent communication and documentation skills in a fast-moving team environment;
  • Demonstrated experience deploying AI features into production environments;
  • Upper-intermediate English level.

NICE TO HAVES

  • 2+ years of team lead/management experience;
  • Strong skills in Python;
  • Experience with CI/CD pipelines;
  • Experience with cloud platforms and AI tools such as Vertex on GCP, SageMaker, Bedrock from AWS, and similar ones;
  • Experience with AI frameworks/SDKs (LangChain, LlamaIndex, Hugging Face, etc.);
  • Experience building AI agents or multi-agent systems;
  • Start-up mindset: comfortable experimenting, iterating quickly, and tackling ambiguous challenges.

Benefits & conditions

Competitive compensation: USD-based pay with education, fitness, and team activity budgets.

  • Exciting projects: Modern solutions with Fortune 500 and top product companies.
  • Flextime: Flexible schedule with remote and office options.

Meet Our Recruitment Process It includes main stages: Application * Coding Challenge * Video Interview * Technical Interview or Interview with the Hiring Manager(s). Each step helps us understand your skills and overall fit. If it's a match, you'll receive an offer.

About the company

AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and trailblazing startups across 17+ industries. We rank among the leaders in areas like application development and AI/ML, and our people-first culture has earned us multiple Best Place to Work awards.

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