Staff Engineer, Full Stack

About SonderMind

At SonderMind, we believe everyone deserves one personalized, connected, and effective mental health destination to take care of their mental health and well-being at any stage of life. SonderMind care encompasses everything from therapy and medication management to meditation and mindfulness exercises. Our clinicians leverage our digital tools and research to deliver increasingly high-quality care and to develop thriving practices. Combining technology and human connection, SonderMind drives better outcomes through our comprehensive approach. Learn more about SonderMind at sondermind.com or download the mobile app, available on iOS and Android. To follow the latest SonderMind news, get to know our clients, and learn about what it’s like to work at SonderMind, you can follow us on Instagram, Linkedin, and Twitter.

Additionally, we expect all team members to effectively leverage modern AI technologies as part of their everyday workflow, and to continuously adapt as new tools emerge. Familiarity with job-relevant AI platforms such as Gemini, ChatGPT, Claude, GitHub Copilot or other industry-standard AI productivity tools is expected and considered essential for success at this company.

About the Role

Step into a groundbreaking role at the forefront of revolutionizing mental healthcare. SonderMind is seeking a Staff Full Stack Engineer (Software Engineer IV) to join our innovative team in building AI-powered tools that truly partner with therapists. You won’t just be coding features—you’ll be helping architect the future of therapy by developing software that acts as an intelligent copilot, enhancing provider capabilities and transforming the lives of countless clients.

Your contributions will drive product enhancements, optimize customer acquisition, and position us as leaders in redefining the intersection of technology and mental health. This is your opportunity to make an immediate, meaningful impact on the design, implementation, and strategic direction of AI-assisted therapy.

Join a passionate team engaged in cutting-edge design and architecture discussions, explore emerging technologies to enhance our platform, and contribute to a mission-driven organization that values collaborative debate, shared success, and societal impact in mental health.

What you’ll do

• Build end-to-end full-stack features (Angular/TypeScript, CSS, Node.js, Python, Ruby on Rails, PostgreSQL) with a strong front-end focus, delivering user-centric experiences. 
• Collaborate with the UX team on design systems and partner cross-functionally with Product, Engineering, and Applied Science. 
• Own the full software lifecycle—design, build, test, and operate—while maintaining high code quality through unit, functional, and end-to-end tests.
• Identify and implement AI-driven solutions that streamline provider workflows and reduce administrative burden. Mentor junior engineers via code reviews and pair programming, and champion internal standards for style, maintainability, and best practices. 
• Ship features consistently with minimal guidance, troubleshoot issues through data and code analysis, and evaluate emerging tools and technologies.

What does success look like?  

• Writes maintainable code and tests
• Provides helpful, timely code reviews. Consistently follows best practices, able to defend technical decisions in code review feedback.
• Contribution towards design patterns and architecture decisions to minimize tech debt and maximize development speed
• Successful feature delivery towards key business metrics and OKRs
• Collaborate with teammates and stakeholders to deliver a solid product
• Lead specific team projects independently and in collaboration with other leads
• Accountable, end-to-end ownership of features through planning, deploy, maintenance, and monitoring potential issues

Who You Are

Required:

• 8+ years of experience as a full-stack engineer, specializing in UI development, scalable front-end architecture, and design systems.
• Proficient in TypeScript/Angular.
• Prior experience with Ruby on Rails / Willingness to learn.
• Experience with relational databases like Postgres
• Highly motivated to learn how to build the agentic application and experience of LLM applications.
• Ability to clearly and concisely communicate about complex technical, architectural, and/or organizational problems and propose thorough, iterative solutions
• Proven ability to work closely with other Engineers, Product Managers, and other Stakeholders
• Proven ability to thrive in fast-growing, product-driven companies by effectively navigating loosely defined tasks and managing competing priorities or deadlines.

Preferred:

• MS in Computer Science or related field.
• Strong experience developing and documenting design systems (e.g., Storybook, Iris)
• Experience leveraging AI coding assistant tools (e.g., Cursor, Claude)
• Prior experience with programming languages like C++ , Java or Go ( preferred, not required) 
• Experience working with Ruby on Rails, Postgres SQL and data analysis
• Experience working in AWS
• Rapid experimentation such as A/B testing, feature flags, etc.

Our Benefits 

The anticipated salary range for this role is $160,000 - $180,000. Final compensation will be determined based on a variety of factors, including relevant experience, skills, education, and past performance.

As leaders in redesigning behavioral health, we walk the walk with our employees' benefits. We want the experience of working at SonderMind to accelerate people’s careers and enrich their lives, so we focus on meeting SonderMinders wherever they are and supporting them in all facets of their lives and work.

Our benefits include:

• A generous PTO policy, with a minimum of three weeks off per year
• A holiday schedule that follows standard U.S. holidays
• Free therapy coverage benefits to ensure employees have access to the care they need (must be enrolled in a qualifying medical plan to participate)
• Competitive Medical, Dental, and Vision coverage, with plans to meet every need — including HSA (with $1,100 company contribution) and FSA options
• Employer-paid short-term disability, long-term disability, life & AD&D, plus coverage of the salary difference for up to seven weeks of short-term disability leave (after the required waiting period)
• Eight weeks of paid Parental Leave; if the parent also qualifies for STD, this benefit is in addition, allowing for 8–16 weeks of paid leave
• 401(k) retirement plan with 100% match on up to 4% of base salary, immediately vested
• Join teammates from across the country at our annual company gathering
• Company shutdown between Christmas and New Year’s
• Supplemental life insurance, pet insurance, commuter benefits, and more

Application Deadline

This position will be an ongoing recruitment process and will be open until filled.

Equal Opportunity 

SonderMind does not discriminate in employment opportunities or practices based on race, color, creed, sex, gender, gender identity or expression, pregnancy, childbirth or related medical conditions, religion, veteran and military status, marital status, registered domestic partner status, age, national origin or ancestry, physical or mental disability, medical condition (including genetic information or characteristics), sexual orientation, or any other characteristic protected by applicable federal, state, or local laws.