Senior Full Stack Engineer(React, Node.JS)

Linus Health; Boston (MA); On-site; USD 155,000 - 175,000; Full time

Benefits offered by this job

Equity

Health benefits

Unlimited PTO

401(k) plan with match

Monthly flex day

Job summary

Linus Health, located in Boston, is looking for a Senior Full Stack Engineer to lead the development of complex software systems. You'll utilize your expertise in React and Node.js to design and deliver scalable, reliable solutions while collaborating with cross-functional teams to meet business goals.

The position offers a salary range of $155,000–$175,000 per year along with additional benefits including bonuses, equity, health plans, and unlimited PTO. Strong communication skills and a proactive mindset are essential.

Qualifications

• 5+ years of software engineering experience with significant expertise in React framework and Node.
• 3+ years building restful services including database design in Node.
• Familiarity with AI-assisted development workflows.
• Proficiency in frontend performance optimization strategies.
• Strong communication skills for technical and non-technical stakeholders.

Responsibilities

• Build full stack applications upon restful services ensuring scalability and maintainability.
• Lead coding, code reviews, and full stack feature design.
• Champion best practices in testing, CI/CD, and observability.
• Collaborate cross-functionally to translate requirements into solutions.

Skills

React framework

Node.js

Frontend performance optimization

Database design

AI-assisted development

Communication

Tools

D3

React Native

Aurora Postgres

Job description

Senior Full Stack Engineer(React, Node.JS)

About this position

Linus Health is a Boston-based digital health company focused on transforming brain health for people across the world. By advancing how we detect and address cognitive and brain disorders – leveraging cutting‑edge neuroscience, clinical expertise, and artificial intelligence – our goal is to enable a future where people can live longer, happier, and healthier lives with better brain health.

About the role

As a Senior Full stack Software Engineer you will be a core team member responsible for driving the design, development, and delivery of complex software systems. By combining deep front end technical expertise with strong backend API design abilities you will drive secure, performant implementations with your fellow team members toward high-impact outcomes. Influence API and database design decisions, front end technical direction, and ensure the scalability, reliability, and maintainability of software solutions. Collaborate closely with cross‑functional partners—including product managers, designers, and other engineers—to align technical initiatives with business goals. Mentor and coach other engineers, fostering growth, best practices, and a culture of technical excellence within the organization.

What you'll do

• Build full stack applications upon restful services, ensuring performant, scalable, observable, maintainable solution in collaboration with Software Architect.
• Lead by example with hands‑on coding, code reviews, full stack feature design, while also anticipating long‑term challenges such as system performance, technical debt, and evolving technology stacks.
• Advance AI‑assisted usage by championing best practices and practical applications for AI‑assisted code generation ensuring speed gains are paired with validation, security, and reliability.
• Uphold best practices for testing (unit, integration, snapshot, e2e), CI/CD pipelines, code quality, and observability in all solutions.
• Collaborate with other engineers across projects using excellent written and verbal communication skills with a proactive mindset to deliver on the goals of the team.
• Collaborate cross‑functionally with Software Architect, Product, Design, Data Science/Medical, and Security to translate requirements into elegant, maintainable solutions that meet our customer’s needs.

About You

Must Haves

• 5+ years of software engineering experience with significant expertise in React framework and Node.
• 3+ years building restful services including database design in Node.
• Familiarity with AI‑assisted development workflows, and proven ability to accelerate development workflows through practical application.
• Proficiency in frontend performance optimization (bundle splitting, lazy loading, caching strategies, rendering patterns).
• Strong communication skills—able to drive consensus, document decisions (ADRs, RFCs), and present tradeoffs clearly to technical and non‑technical stakeholders.

Nice to Have's

• Experience with mobile development in React Native or iOS/Swift.
• Exposure to data visualization libraries (D3, Victory, Recharts, or native iOS charting).
• Previous work in digital health or regulated environments (EHRs, HIPAA, GDPR).
• Experience with Temporal orchestration.
• Experience with Aurora Postgres, database design.
• Experience / familiarity with Java services.

How You Embody Our Values

• Be Real: communicate technical tradeoffs and risks candidly across teams.
• Be Wise: guide design choices using data, metrics, and long‑term thinking.
• Be Noble: uphold high standards for API responsiveness, production observability, and customer data privacy in every decision.
• Be a Team: enable engineers to succeed through mentorship, documentation, and open collaboration.
• Be Masters of Our Craft: set exemplary standards for API quality, performance, and maintainability (including AI‑assisted workflows).
• Think Big and Act Bold: lead bold initiatives like public API development that transform how we interface with the broader healthcare ecosystem.

Compensation

The base salary budgeted for this position is in the $155,000‑175,000 range per year. This position will also include a yearly target discretionary bonus as well as equity, health benefits, unlimited PTO, a monthly flex day, a 401(k) plan with a match and more. The final offer determined for the candidate who is hired into this position will depend on a number of factors, including, but not limited to, the candidate’s relevant skills, professional experience, labor market conditions, etc.

Equal Opportunity

Linus Health is an equal opportunity employer. All qualified candidates will receive consideration for employment without regard to race, religion, color, national origin, sexual orientation, gender, gender identity or expression, age, genetic information, disability or any characteristic protected by law. We believe that diversity is critical to the growth of our company and understand the importance of fostering an environment where everyone has a voice. We are also committed to providing reasonable accommodations for candidates with disabilities during the recruiting process.