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Software Engineer - Mobile & Web Applications

Marina Del Rey, California, United States, Remote

Wellth is a pioneering digital health company.

Wellth is a fast-growing, growth-stage digital health company headquartered in Los Angeles. Our mission is to motivate people living with chronic conditions to make healthier choices, every single day.

We use behavioral economics, habit science and technology to motivate lasting behavior change in some of the highest need and most underserved populations in the US (Medicare and Medicaid), drastically changing their quality of life and health outcomes. We have demonstrated results with several large insurers and health systems (e.g. reducing hospitalizations by over 40%), and are now rapidly scaling. Our goal is to be the category leader in improving health outcomes for hard-to-engage populations. A key difference at Wellth compared to other digital health companies is that our users (Members) actually use Wellth every single day - think TikTok tier daily engagement (and data generation!).

But most importantly, our work quite literally saves lives by stabilizing chronic disease patients and preventing disease progression, hospitalization, and other bad outcomes. We are a mission-driven company where you work with incredible talent and see tangible differences directly from your impact.

Develop your technical expertise while building healthcare solutions that matter

At Wellth, mid-level engineers don't just write code—they own features, collaborate across teams, and grow into technical leaders. Our applications have prevented 15,000 hospital days and saved 530 lives by making healthcare more accessible to underserved populations.

You'll work on mobile apps, web applications, and AI-powered support systems that serve 50,000+ daily patient interactions. With mentorship from senior engineers and opportunities to drive meaningful projects, you'll expand your skills while directly impacting healthcare outcomes.

The engineer we're looking for

You have solid technical fundamentals and a track record of delivery

  • 3-5 years building production web or mobile applications
  • Strong JavaScript/TypeScript experience with modern frameworks (React, React Native, Node.js)
  • End-to-end ownership of features from design through deployment
  • Quality-focused approach including testing, code reviews, and thoughtful debugging
  • Effective communication with both technical and non-technical stakeholders

You're ready to expand your impact

  • Growing ownership: You want to lead larger features and mentor others
  • Technical curiosity: You dig into how systems work and seek to understand the full stack
  • Collaborative mindset: You actively participate in design discussions and value team input
  • Learning orientation: You see challenges as growth opportunities
  • User empathy: You care about building accessible, intuitive experiences

What you'll work on

Mobile & Web Development (40%)

Build features for patient-facing applications:

  • React Native mobile apps for iOS and Android with 50K+ active users
  • React web applications serving patients, care teams, and internal users
  • Responsive, accessible interfaces that work across devices and abilities
  • Real-time features including messaging, notifications, and live updates
  • Offline capabilities ensuring reliable experiences in low-connectivity scenarios

AI Systems Enhancement (30%)

Support and improve AI-powered features:

  • In-app chat systems providing 24/7 patient support
  • AI response tuning to improve accuracy and empathy
  • Observability tools for monitoring AI system performance
  • Conversation flow optimization based on user feedback and metrics
  • Compliance features ensuring healthcare regulation adherence

Platform & Infrastructure (30%)

Contribute to shared systems:

  • Backend APIs supporting mobile and web clients
  • Performance optimization to reduce load times and improve UX
  • Developer tooling to streamline team workflows
  • Testing infrastructure for reliable deployments
  • Documentation helping the team scale effectively

Technical skills

Required

  • JavaScript/TypeScript proficiency
  • React or React Native experience (1+ years)
  • RESTful API design and consumption
  • SQL database experience (PostgreSQL preferred)
  • Git workflows and PR-based collaboration
  • Unit testing with Jest or similar frameworks

Valued

  • Node.js backend development
  • AWS services (S3, Lambda, DynamoDB, API Gateway)
  • GraphQL APIs
  • CI/CD pipelines (GitHub Actions preferred)
  • Mobile app deployment (App Store, Google Play)
  • AI/ML system integration experience
  • Agentic coding workflows and AI-assisted development tools (Claude Code, Gemini CLI, Copilot, Codex, MCP servers)
  • Context engineering and prompt design for development workflows
  • Healthcare or HIPAA-compliant system experience

What to Expect When Interviewing with Us 

We believe interviews should be a two-way conversation where you can showcase your skills and learn about Wellth. Throughout the process, we'll assess both your technical capabilities and alignment with our core values. The process includes technical assessments, system design discussions, and conversations about your experience and how you work. You'll meet with engineers, cross-functional partners, and leadership. We want to understand both your technical skills and how you'll contribute to our team and mission.

You will enjoy working with us at Wellth.

Meaningful Work

Your code directly prevents hospitalizations and saves lives. See the real-world impact of your technical decisions.

Technical Growth

  • Mentorship from experienced engineers who invest in your development
  • Exposure to diverse challenges: mobile, web, AI, distributed systems
  • Clear growth path with defined expectations for advancement to senior engineer
  • Learning budget for courses, conferences, and professional development

Supportive Culture

  • Collaborative environment where questions are encouraged
  • Blameless post-mortems focused on learning, not blame
  • Regular pairing sessions to learn and share knowledge
  • Work-life balance with flexible hybrid arrangements

Strong Team

Join engineers from companies like Microsoft, Amazon, PayPal, and healthcare startups.

Technology & practices

Stack:

  • React Native, React, TypeScript, Node.js
  • PostgreSQL, DynamoDB, Redis
  • AWS (Lambda, S3, API Gateway, SQS)
  • DataDog for observability
  • GitHub Actions for CI/CD

Practices:

  • Agile development with two-week sprints
  • Component-driven development
  • Feature flags for safe deployments
  • Comprehensive testing and code review
  • Regular retrospectives and continuous improvement

The benefits of working with us include:

  • Flexible working arrangements, supporting strong remote-first practices and tools with the option to work in our excellent gathering space in Marina Del Rey, CA.
  • Robust paid time off and generous parental leave program.
  • Competitive salary & bonus structure.
  • Health, dental, vision insurance, and FSA/HSA plans.
  • Ability to have a positive impact on people who need it most.
  • Support of a highly dedicated team focused on building the future of healthcare.

What success looks like

In your first 3 months:

  • Ship your first feature to production
  • Understand our mobile and web architecture
  • Contribute meaningfully to code reviews
  • Build relationships across product, design, and engineering

In your first 6 months:

  • Own features end-to-end with minimal guidance
  • Make meaningful contributions to AI system improvements
  • Mentor newer team members or interns
  • Identify and drive improvements to developer experience

In your first year:

  • Lead a significant technical initiative
  • Contribute to architecture decisions
  • Help with hiring and interview process
  • Demonstrate readiness for senior engineer responsibilities

Ready to make an impact?

We're looking for engineers who want to grow their skills while building technology that matters. If you're excited about mobile and web development, curious about AI systems, and want to work in healthcare technology with a supportive team, let's talk.

Base Compensation: $110,000 - $140,000

 

Wellth is an equal-opportunity employer. We value diversity at our company. We do not discriminate on the basis of race, religion, ethnicity, national origin, citizenship, gender, gender identity, sexual orientation, age, veteran status, disability, genetic information, or any other protected characteristic.

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