Senior Full Stack Engineer

Were a team of machine learning engineers training taskspecific generative models for psychology. Our goal is to build an AI therapist to help people change their mind and their lives in the ways that they want to. We partner with organizations around the globe and power use cases including AIassisted crisis text response while securing bestinclass datasets to power our models.

Success to us means every human being in need of support having somewhere to go. Were a wellfunded seedstage startup backed by toptier tech investors involved in Huggingface ElevenLabs Replit Captions Shopify Plaid Notion Canva Twitch Airtable and others

Were building a powerful team by empowering our engineers with the autonomy flexibility and resources to do their best work. We dream big and iterate fast. If that sounds like home wed love to hear from you.

The Role

This is a chance to join a passionate team leveraging cuttingedge AI to improve mental health access globally. As a Senior Full Stack Engineer you will play a critical role in building the user experience for our AI Therapy application Ash. You will work closely with our ML team to implement new features ranging from UX improvements to completely new AIdriven features. As a core member of a small but highly skilled team we expect you to act as an owner and to care passionately about keeping building meaningful experiences for our end users.

Our tech stack uses Dart/Flutter for our apps Kotlin for core backend services Python for our ML work as well as Rust for low level media streaming. We use gRPC and GCP (Kubernetes Cloud Run) as our primary cloud provider. Youre not required to be an expert in all of these tools but we would like you to come with a learning mindset and to not be afraid of getting your hands dirty with whatever tool the job might require.

About You

• You have experience building and shipping mobilefirst consumer apps and are comfortable working across the stack and designing endtoend user features. Experience with modern multiplatform frameworks like Flutter React Native Ionic or similar is a big plus.

• You understand the broader picture of software developmentthings like app performance UX tradeoffs analytics and crash reporting. And navigate the nittygritty of mobile app development such as offline functionality push notifications or deep linking.

• Youre highly autonomous and love tackling big ambiguous problems. You dont wait for someone to tell you what to doyou figure it out. Youre always learning and happy to pick up new tools and frameworks on the go.

• Youre a team player who cares deeply about product quality and impact. You take ownership of your work but youre always thinking about how it fits into the bigger picture and how to move the whole product forward.

• You can ship fast. We work at lightning speed.

Requirements:

• 3 years of software development experience with a strong focus on mobilefirst applications

• Experience building and maintaining consumerfacing apps using modern development frameworks (e.g. React Vue Ionic Flutter Kotlin Multiplatform etc.

• JVM experience is a plus (Java Kotlin) or at least a strong willingness to learn

• Based in London or New York were operating on a hybrid basis but love spending time together in person

• Experience working in a fastpaced <100 person startup environment is a strong plus

Why you should take this job:

• You want to build things that matter. You love seeing your creations come to life and get used whether thats a small prototype demonstrator or foundations behind the scenes.

• You want first hand experience of AI and Machine Learning in practice. Youll be part of a team that pushes the frontiers of how modern AI can be employed to make a difference.

• You want direct exposure and mentoring from a founding team with a successful exit and track record (Neil scaled Casper through IPO)

• You care about our mission and are willing to do what it takes to make it happen

Why you shouldnt take this job:

• You would rather be told exactly what to do than to act as an owner

• You see yourself as fully formed and would rather not have to learn new things on the job

What We Offer

• Competitive compensation 90th percentile)

• Hybrid environment highly collaborative fastpaced culture

• Work with a crazy passionate team that cares deeply about the impact of our work on mental health especially in a postAGI world

Required Experience:

Senior IC