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Staff, Full Stack Engineer

Denver, CO or Remote

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.

About the Role

As a Staff Engineer, you’ll own end-to-end features across our backend services (Ruby on Rails or TypeScript/Node) and our Angular/TypeScript front end. You’ll work under minimal supervision, troubleshoot complex problems, and help shape our core monolith and emerging TS microservices while collaborating closely with product, design, and QA.

What you’ll do

  • Design, build, and maintain scalable Rails or TypeScript/Node services and RESTful APIs
  • Implement and extend Angular/TypeScript UI components for web experiences
  • Optimize PostgreSQL queries and service performance
  • Collaborate with cross-functional squads to define requirements and deliver features
  • Identify and drive process, architecture, and toolchain improvements
  • Mentor junior engineers through code reviews and pair-programming
  • Serve as a technical lead on complex projects, balancing scope, risk, and engineering quality.

What does success look like?  

  • 30 days: Ship a backend feature (Rails or TS) end-to-end and demo it to the team
  • 60 days: Lead a cross-team API enhancement and propose a performance refactor
  • 90 days: Lead a system-level architectural improvement (e.g., introduce a TypeScript microservice or refactor a critical service for scalability), including a clear design, implementation, and rollout plan in place or executed against.

Who You Are

  • Masters in Computer Science or related field.
  • 8+ years building web services or full-stack applications
  • Experience integrating LLMs or AI-driven features is a must
  • Strong hands-on experience in Ruby on Rails or TypeScript/Node back ends
  • Solid Angular/TypeScript front-end skills
  • Deep understanding of REST, PostgreSQL, and performance tuning
  • Proven ability to balance short-term delivery with long-term technical investments.
  • Comfortable operating in a fast-paced, ambiguous environment where requirements evolve.
  • Excellent problem-solving, communication, and collaboration skills

Our Benefits 

The base salary range for this role is $150,000-$175,000.

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 commitment to fostering flexible hybrid work
  • A generous PTO policy with a minimum of three weeks off per year
  • Free therapy coverage benefits to ensure our employees have access to the care they need (must be enrolled in our medical plans to participate)
  • Competitive Medical, Dental, and Vision coverage with plans to meet every need, including HSA ($1,100 company contribution) and FSA options
  • Employer-paid short-term, long-term disability, life & AD&D to cover life's unexpected events. Not only that, we also cover the difference in salary for up to seven (7) weeks of short-term disability leave (after the required waiting period) should you need to use it.
  • Eight weeks of paid Parental Leave (if the parent also qualifies for STD, this benefit is in addition, which allows between 8-16 weeks of paid leave)
  • 401K retirement plan with 100% matching which immediately vests on up to 4% of base salary
  • Travel to Denver 1x a year for annual Shift gathering
  • Fourteen (14) company holidays
  • Company Shutdown between Christmas and New Years
  • Supplemental life insurance, pet insurance coverage, 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.

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