Cto / Technical Co-Founder - €100.000 - €120.000 A Year - Remote Lisboa

Cto / Technical Co-Founder - €100.000 - €120.000 A Year - Remote
Lisboa
Lisboa, Lisboa, Portugal

At Backsie Inc (Permanent)

Salary: €100. 000 - €120. 000

Expires at: 2026-01-26

Remote policy: Global remoteAbout the RoleWe’re seeking a highly skilled CTO / Technical Co-Founder with deep expertise in LLM-based AI,
- agent architectures, and
- AI interaction. You’ll own the technology vision and guide Backsie’s evolution from MVP to scalable platform as we prepare for venture financing in Q1 2026. This is not a
- off position — you’ll conduct a full technical audit, design the future architecture, expand the engineering team, and ensure that all AI systems are robust,
- latency, and emotionally intelligent. You’ll collaborate closely with the CEO (based in New York) and a distributed team across time zones. Key Responsibilities - Lead overall AI and software architecture, ensuring scalability, resilience, and data integrity - Oversee development of LLM orchestration and guardrail agents for emotionally nuanced conversations - Build and manage the engineering team, CI/CD pipelines, and Dev
Ops infrastructure - Develop RAG systems, custom datasets, and regression testing frameworks - Collaborate with product and research to align emotional intelligence with logical structure - Represent the technical vision to investors and partners

Main
- 5 + years in AI, ML, or NLP engineering (including
- level LLM systems) - Experience with Lang
Chain, Open
AI API, or comparable frameworks - Solid grasp of agentic design, API-centric architecture, data pipelines, and testing automation - Proven ability to lead technical teams in startups or
- paced environments - Excellent communication skills and collaborative mindset
Nice to
- Prior startup or
- founder
- Familiarity with
- health, wellbeing, or CBT/DBT
- Experience balancing safety/guardrail mechanisms and empathy in LLM products
Benefits & PerksCompensation & Equity - Equity: 8 – 15 % (vesting over 48 months / 83b eligible) - Salary (post-funding): up to $200 K USD (competitive with U. S. standards) - Early-stage stipend or consulting arrangement may be offered until fundraising closes

Why Join UsYou’ll be shaping the foundation of a product with the potential to redefine how people reflect, reason, and heal with AI. Backsie is early enough that your contributions will shape its DNA — from technical architecture to team culture — yet mature enough to have a clear path to funding and market. We value emotional intelligence, technical depth, and
- term commitment. If you’re ready to build something that truly matters, let’s talk