Full Stack Engineer II

Kooth

1d•$125,000 - $160,000•Remote

About The Position

At Kooth, our mission is to create welcoming, accessible spaces for personalized digital mental health care that empowers young people to thrive. Grounded in an early-intervention model, we help youth aged 13–25 build resilience, access timely support, and lead fulfilling lives. We are more than a digital service — we are a movement for inclusive, evidence-informed mental health care. Our culture is rooted in our values: Alongside You, Flexible, Compassionate, Committed, and Safe. These guide everything we do - how we show up for young people, how we collaborate as a team, and how we build solutions that meet communities where they are. With Kooth, you’ll be part of something bigger than yourself: meaningful work with measurable impact. We bring this mission to life through Soluna, California’s first-in-the-nation digital behavioral health service for 13–25-year-olds. Soluna removes barriers to care by providing nearly immediate access to 1:1 coaching, Care Navigation, and self-guided tools helping young people find real support, build resilience, and discover hope when they need it most. Together with state and local partners, we’re transforming access to mental health support for youth. Learn more at solunaapp.com/impact. We are looking for a well-rounded engineer with at least two years of experience in a team-based environment to join us. We're keen to find someone who can operate across our TypeScript-based stack, from Node.js backends to React Native components in our mobile apps, working with their teammates to tackle a diverse set of technical challenges and build great products. As a member of our team, you will be building new systems and experiences that guide young people to the services they need and having a positive impact on their mental health. If you would like to be part of an ambitious, fun and caring culture in a growing company that is having a positive social impact, look no further apply today!

Requirements

You have experience working as an engineer in a team-based, product-driven environment.
You have experience with TypeScript, Node.js, React Native and/or React or an engineering background that will allow you to quickly come up to speed.
You’re excited about delivering end-to-end experiences, are passionate about your craft, and relish working across the whole stack.
You have a quality mindset and are committed to shipping maintainable, well-tested code.
You are pragmatic and want to work in an environment that values agile processes, data-informed development, reliability, and responsible experimentation.
You use your communication and collaboration skills to ensure that you are aligned with your peers and to partner with them on problem-solving.
You are team-oriented and value the group’s success over your personal achievements.

Nice To Haves

Savviness with AI coding tools such as Cursor or Claude is a plus.

Responsibilities

Developing and shipping in an ecosystem of Node.js backend services, React Native mobile applications, React-based web frontends, and the APIs that enable them to work together.
Building great software by taking accountability for your work, always aiming to improve the systems that you work on and partnering with engineering teammates in a highly-collaborative, team-based environment.
Balancing performance, observability, reliability, maintainability, security and accessibility concerns.
Leveraging best practices in continuous integration and delivery to iterate on product objectives and ensure application health.
Collaborating across disciplines to build effective working relationships, solve challenging problems for our users, and drive positive business outcomes.
Participating in an off-hours on-call rotation to support the ongoing reliable operation of our systems.