Be our CTO's technical partner: Own many domains, deliver work across entire platform, debate roadmap and technical approaches. This is a leadership role without management responsibility.
Real ownership + hard problems + proven team = rare career opportunity.
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What We're Building
Nesso is an AI-powered platform for therapists running private practices.
We combine practice management tools (scheduling, billing, documentation, communication) with AI-driven business insights that help therapists grow as business owners.
📍 Stage: pre-launch, building V1.
Why This Is Interesting
Proven founders who know this space:
- Fletcher Dennison (CEO) and Will Morales (CPO) were the first employees at SimplePractice (the current market leader, IPO in 2021)
- Spent 10+ years building software used by 200,000+ therapists and millions of clients
- Self-funded = accountable to customers, not investors
- Ukrainian CTO building a European engineering team
Technical partnership, not just senior IC:
- CTO's right hand, driving toward V1
- Earn ownership of many technical domains
- Autonomous decision-making
- Critical input in roadmap prioritization, technical, and architectural approaches
- Must thrive in debate culture (decisions challenged to find best solutions)
Hard technical problems you'll solve:
- Building AI therapists can trust with business & clinical judgment
- Designing a HIPAA-compliant architecture from the ground up
- Proactive intelligence that feels like a smart assistant
- Structured, secure clinical data pipeline
- Personalization engine at scale (100K+ therapists, 1M+ clients)
- Secure, responsive architecture across platforms
Unique breadth and leadership, not possible at larger companies:
- No technical challenge is out of bounds. From custom UI interactions → financial reporting → AI pipelines → security architecture → data modeling
- Learn and grow by shipping products across the entire platform
The Tech Stack
Frontend
- React 19, TypeScript 5.5
- TanStack Query v5, Zustand
- Tailwind CSS, shadcn/ui components
- Zod validation, React Hook Form
Infrastructure & AWS
- Node.js 24.x LTS
- SST (Serverless Stack)
- AWS Cognito, Aurora Serverless (PostgreSQL), DynamoDB, S3, Lambda, API Gateway
- Turborepo monorepo with pnpm
Architecture
- Clean Architecture (domain → application → infrastructure layers)
- DDD
- Feature-based code organization
- CQRS pattern for queries/mutations
What We're Looking For
Must have:
- 7+ years of experience in software engineering
- Led architecture decisions — designed systems from scratch or driven major refactors
- Deep TypeScript expertise (strict mode, generics, type-safe patterns across frontend and backend)
- Deep React experience (hooks, performance optimization, state management)
- Node.js backend development (API design, Lambda handlers, async patterns)
- Clean Architecture, DDD, and CQRS
- AWS services (Lambda, API Gateway, Cognito, Aurora/DynamoDB, S3)
- PostgreSQL (schema design, migrations, query optimization)
- Monorepo experience (dependency graphs, build orchestration, shared packages)
Nice to have:
- Serverless-first architecture (SST, CDK, or similar IaC)
- TanStack ecosystem (Router, Query)
- Zod or similar runtime validation at system boundaries
- Real-time systems (WebSockets)
- Scaling serverless workloads
- HIPAA or regulated industry experience
- Payment system integration (Stripe)
Mindset:
- Ownership mentality — you build things end-to-end, problem-solve, and are adaptable
- Intellectually honest — you want decisions challenged to get to the best one
- Breadth-seeking (not narrow specialization)
- Thrive in ambiguity and startup environments
Not for you if:
- Need hierarchy/approval processes
- See debate as conflict
- Want narrow specialization
- Want to manage people now
What We Offer
💰 Compensation:
- Negotiable based on experience
- B2B contract
🕐 Work:
- Fully remote
- Full-time (40+ hours/week)
- Flexible hours
🚀 Growth:
- Merit-based — do great work, take on more ownership, grow your comp and title
- Flexible path (IC or future management)
🌱 Environment:
- Small, focused, senior team
- Minimal meetings, maximum trust
- No investor pressure or bureaucracy
Hiring process
Recruiter screen (30 min) → Technical interview with CTO (2.5+ hrs) → Team fit interview with Head of Design and co-founders (60 min)
