Senior Fullstack Developer

Maite.ai; Madrid; A distancia; EUR 43.000; Jornada completa

Descripción de la vacante

A legal tech startup is seeking a Full-Stack Engineer to build AI-powered legal technology from scratch and shape future products. This 100% remote role requires strong expertise in JavaScript/TypeScript, React, and PostgreSQL. The ideal candidate is user-focused, communicative, and values quality through a testing culture. The position offers a competitive salary of €43,000 and flexible working conditions.

Servicios

Compensation of €43,000 annually

100% remote work

Flexible hours

Equipment of your choice

Formación

• 5 years of software development experience with a track record of shipping production applications.
• Strong full-stack expertise in modern JavaScript / TypeScript, React, Next.js, Node.js, and API design.
• Database proficiency in PostgreSQL or similar relational databases.

Responsabilidades

• Build end-to-end features across our Next.js frontend and API backend.
• Architect AI-powered experiences and integrate AI models into workflows.
• Design and implement document processing pipelines.

Conocimientos

Modern JavaScript / TypeScript

React

Next.js

Node.js

PostgreSQL

Fluent in Spanish

Fluent in English

API design

Herramientas

Supabase

Qdrant

Descripción del empleo

Full-Stack Engineer @ Maite.ai

About Us

Maite.ai is on a mission to fight for a fairer world through technology.

• We’re building an AI‑powered legal assistant that democratizes access to justice by making legal work faster, more accurate, and more accessible. We’re a legaltech startup combining cutting‑edge AI with deep domain expertise to transform how legal professionals work—and ultimately, how people access legal services.

The Opportunity

We’re looking for a Full-Stack Engineer who wants to build products that matter. This isn’t about adding features to an existing product—it’s about shaping the future of AI‑powered legal technology from the ground up. You’ll work across our entire stack, from crafting intuitive AI copilot experiences to building robust document processing pipelines, all while working directly with our CTO and a lean, high‑impact team.

If you’re energized by the intersection of AI and real‑world impact, this is your chance to build something meaningful.

What You’ll Do

• Build end‑to‑end features across our Next.js frontend and API backend, taking ownership from conception to deployment.
• Architect AI‑powered experiences, integrating OpenAI, Anthropic, and Gemini models into seamless user workflows.
• Design and implement document processing pipelines that handle uploads, analysis, embeddings, and intelligent retrieval.
• Craft exceptional UIs that make complex AI interactions feel simple and delightful for legal professionals.
• Manage data architecture in PostgreSQL / Supabase, optimizing for performance and scalability.
• Write comprehensive tests and documentation because quality and knowledge‑sharing are non‑negotiable.
• Collaborate closely with our small dev team, QA engineers, and CTO to ship fast and iterate based on user feedback.
• Drive technical decisions with the autonomy and responsibility that comes with being a senior member of a small team.

What We’re Looking For

• 5 years of software development experience with a track record of shipping production applications.
• Strong full‑stack expertise in modern JavaScript / TypeScript, React, Next.js, Node.js, and API design.
• Database proficiency in PostgreSQL or similar relational databases, with an understanding of data modeling and query optimization.
• Product mindset – you think about user problems first, not just technical solutions.
• Testing culture – you write tests, you value quality, and you don’t ship broken code.
• Languages – fluent in Spanish and English (we’re a bilingual team and product).
• Communication skills – you can explain complex technical decisions clearly and collaborate asynchronously in a remote environment.

Nice to Have

• Experience with Supabase, Qdrant, or vector databases.
• Real AI / ML integration experience – you’ve worked with LLM APIs (OpenAI, Anthropic, Claude, etc.) and understand prompting, context management, and AI UX patterns.
• Familiarity with document processing (PDF parsing, embeddings, RAG architectures).
• Background in startups or fast‑paced environments where you wore multiple hats.
• Previous work on developer tools, AI products, or SaaS platforms.
• Understanding of accessibility standards and inclusive design.

You Are

• User‑obsessed – you start every decision by asking "does this make the user’s life better?"
• Radically honest – you speak up when something isn’t right, challenge ideas constructively, and value truth over ego.
• Infinitely curious – you dive deep into problems, ask "why?" constantly, and stay rigorous in your exploration.
• Future‑focused – you move fast, experiment boldly, and believe "done is better than perfect."
• Self‑driven – in a small remote team, you don’t wait for instructions—you identify problems and solve them proactively.

What We Offer

• Compensation: €43,000 annual salary.
• Work Flexibility: 100% remote—work from anywhere in Spain.
• Flexible hours: we care about output, not hours logged.
• Async‑first culture with regular team meetups to stay connected.
• Equipment & Setup: hardware of your choice—MacBook, extra monitor, peripherals, whatever you need to do your best work.