CO-FOUNDER - Chief Technology Officer

shadow.ai

Portugal

Remote

EUR 60,000 - 120,000

Full time

14 days+

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Job summary

An innovative firm is seeking a CTO & Co-Founder to lead the technical strategy for an AI-powered mental health platform. This role offers a unique opportunity to shape a socially meaningful product that redefines psychological support through technology. You will own the technical execution, architect the platform, and implement emotional intelligence in AI. If you are passionate about AI, psychology, and building impactful technology from the ground up, this is the perfect opportunity for you. Join a mission-driven team and help create a new category of mental health support that prioritizes user privacy and ethical AI practices.

Qualifications

  • Proven experience as a CTO or senior technical lead, ideally in a startup.
  • Strong expertise in AI/ML, including LLM integrations and vector databases.

Responsibilities

  • Own and lead the technical strategy and execution of Shadow from zero to scale.
  • Architect, build, and maintain the AI-powered platform for web and mobile.

Skills

AI/ML
LLM integrations
Vector databases
Full-stack development
Data privacy and security

Education

Experience as CTO or senior technical lead

Tools

LangChain
Pinecone
Weaviate

Job description

3 days ago Be among the first 25 applicants

Direct message the job poster from shadow.ai

13 years of experience scaling IPs and startups I Strategic Marketing I Fintech I Web 3.0 I Blockchain I Crypto, and GTM.

CTO & Co-Founder (Equity-Based)

Help us build Shadow — your other version.

About Shadow

Shadow is an AI-powered emotional companion that acts like a non-clinical psychologist in your pocket — a presence that listens, reflects, and helps people navigate emotional challenges without pressure or medication.

Born from lived experience in a conflict zone, Shadow was created for the moments where traditional support isn’t accessible or immediate — when people need understanding more than solutions. It’s a new category of mental health support: grounded in therapy principles, enhanced by AI, and built for real-world use.

Our mission is to redefine how mental health care is experienced — combining psychology, storytelling, and cutting-edge AI to offer quiet, reliable, deeply human support through technology.

Role: CTO & Co-Founder

Location: Remote

Commitment: Full-Time

Compensation: Equity-based (no salary until funding)

What You'll Do
  • Own and lead the entire technical strategy and execution of Shadow from zero to scale
  • Architect, build, and maintain our AI-powered platform (web and mobile)
  • Implement emotional intelligence in AI using LLMs, vector search, and memory systems
  • Work closely with the founder on product design, roadmap, and growth
  • Prototype quickly, iterate fast — bring a "launch now, fix later" mindset
  • Ensure user privacy, ethical AI usage, and platform security from day one
  • Build and eventually lead a small, focused, world-class technical team
  • Stay ahead of advancements in AI and mental health tech — and implement them thoughtfully
Ideal Background
  • Proven experience as a CTO or senior technical lead, ideally in a startup
  • Strong expertise in AI/ML, including:
  • LLM integrations (OpenAI, Anthropic, Mistral)
  • LangChain, custom prompt frameworks, or agent design
  • Vector databases (e.g. Pinecone, Weaviate)
  • Full-stack capabilities — from backend APIs to simple, beautiful user interfaces
  • Strong understanding of data privacy, security, and ethical AI practices
  • Comfortable building MVPs solo, deploying fast, and learning from users
  • Bonus if you’ve worked on:
  • Voice-based interactions
  • Emotionally adaptive UX
  • Mental health or wellness platforms
  • Products with freemium monetization models
  • Driven by impact, not ego. You're here to build something that lasts.
Why Join Shadow
  • Shadow isn’t a content platform or chatbot — it’s a new way of offering psychological support, at scale.
  • You'll be a true co-founder, owning the technical side of a bold, socially meaningful product.
  • You'll shape not just how Shadow is built — but what it becomes in the world.

If you’re passionate about AI, psychology, and meaningful technology — and you’re ready to build from the ground up — we’d love to talk.

Seniority level

Executive

Employment type

Other

Job function

Information Technology

Industries

Mental Health Care

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