CTO / Founding Engineer / AI Startup

Qualifications

• Experience in full-stack development with modern technologies
• Deep interest or expertise in AI, particularly in conversational agents, emotional intelligence, or contextual awareness
• Strong alignment with our mission to fundamentally improve human relationships through technology
• Meaningful work solving significant societal problems

Benefits

• Initially, compensation will be equity-only, but a competitive salary will be provided after funding round
• Complete flexibility: fully remote, autonomous work environment focused on outcomes

Responsibilities

• Tech & Product Development
• Take complete ownership of our tech stack, including scaling, infrastructure, and DevOps (CI/CD, automated testing, monitoring, and deployment)
• Evolve our POC into polished, scalable products—including native mobile applications—that people love
• Ensure robust security and privacy for our users’ sensitive conversations
• Build and lead a tech team, guiding hiring and mentorship as we grow
• Explore integrations with complementary platforms, services, or hardware to accelerate growth and functionality
• Build emotionally intelligent AI agents that provide real-time, context-aware communication feedback to help users navigate conversations
• Leverage RAG, fine-tuning, context window optimization, and prompt engineering to ensure insights feel deeply relevant and actionable
• Explore edge AI and privacy-focused solutions for secure, low-latency interactions
• Lay the groundwork for proprietary AI models as we scale
• Frontend: Next.js + Apollo Client

Full Description

We're tackling humanity's oldest and most fundamental challenge: relationships.

Over 40 years of research clearly shows that poor communication is the top predictor of relationship breakdowns, causing a staggering 68% of divorces and leading to devastating emotional, physical, mental, social, and financial consequences.

The ripple effects are immense: workplace productivity losses exceed $359 billion annually, divorce reduces employee productivity by over 8% per year, and taxpayers shoulder a staggering $112 billion yearly from family breakdown.

But the impact isn't limited to economics: our deteriorating relationships have also driven a loneliness epidemic, now impacting half of US adults and 73% of young adults, with health effects as devastating as smoking a pack a day. Ironically, instead of using technology to enhance real-world connections, we've turned to AI companions as substitutes, deepening our isolation rather than solving it.

Enter Harmonyus...

A science-backed, AI-powered relationship coach designed to strengthen real human connections. Our app acts like an impartial third party, providing real-time feedback and insightful analysis to transform conversations. Initially focused on couples, our platform will expand to address other interpersonal relationships: family dynamics, friendships, and workplace interactions. Our functional prototype is ready and now we need someone exceptional to scale it into the world's first AI-powered multi-party mediation platform.

Your Role: Founding Engineer & CTO

You'll lead our tech strategy, fully own our stack, and innovate at the forefront of AI-powered communication coaching. If building impactful products, moving fast, and exploring cutting-edge AI excites you, this role is your perfect fit.

Note: This is an exciting opportunity to join as a co-founder and earn a significant equity stake in the company. Initially, compensation will be equity-only, but a competitive salary will be provided after funding round.

What You'll Do

Tech & Product Development

• Take complete ownership of our tech stack, including scaling, infrastructure, and DevOps (CI/CD, automated testing, monitoring, and deployment).

• Evolve our POC into polished, scalable products—including native mobile applications—that people love.

• Ensure robust security and privacy for our users’ sensitive conversations.

• Build and lead a tech team, guiding hiring and mentorship as we grow.

• Explore integrations with complementary platforms, services, or hardware to accelerate growth and functionality.

AI & Innovation

• Build emotionally intelligent AI agents that provide real-time, context-aware communication feedback to help users navigate conversations.

• Leverage RAG, fine-tuning, context window optimization, and prompt engineering to ensure insights feel deeply relevant and actionable.

• Explore edge AI and privacy-focused solutions for secure, low-latency interactions.

• Lay the groundwork for proprietary AI models as we scale.

Our Current Stack

• Frontend: Next.js + Apollo Client

• Backend: NestJS, Fastify, Prisma ORM

• Database: PostgreSQL

• APIs: GraphQL

• AI: Multiple integrations

You Don't Need Every Skill, But Bring:

• Experience in full-stack development with modern technologies.

• Deep interest or expertise in AI, particularly in conversational agents, emotional intelligence, or contextual awareness.

• Strong alignment with our mission to fundamentally improve human relationships through technology.

Why Join Harmonyus?

• Cofounder-level ownership: shape a high-potential startup from day one.

• Meaningful work solving significant societal problems.

• Complete flexibility: fully remote, autonomous work environment focused on outcomes.

• Freedom to innovate, experiment, and define the technical future of our company.

Interested?

Forget formalities, just show us what you've built. Send a brief intro and your GitHub or portfolio link. Let's start solving the relationship crisis together.

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