Senior Full Stack Engineer - Growth

Fitt Talent Partners is a specialized recruitment firm for top health and wellness companies. 

We’re filling this role for a client, a longevity-focused, preventative healthcare platform.

Job Description

We’re looking for a proactive and product-minded Growth Engineer to join our team. You will work hand-in-hand with the Growth Product Lead and CTO to build, launch, and iterate on product experiences that fuel our company’s growth. The ideal candidate is a data-driven full-stack developer who excels at rapid experimentation and enjoys working in a fast-paced, high-impact environment.

Responsibilities

• Full-Stack Development for Growth

  • Build, optimize, and maintain features focused on user acquisition, engagement, and retention

  • Develop front-end interfaces (React, Tailwind CSS, etc.) and back-end services (Node.js, Express, AWS)

  • Maintain and improve continuous integration/deployment pipelines

• Experimentation & Data Analysis

  • Design, implement, and evaluate A/B tests to drive key metrics (signups, conversions, referrals, etc.)

  • Collaborate with product and data teams to integrate analytics tools, track performance, and identify growth opportunities

  • Use data insights to propose and prioritize experiments that will move the needle for user engagement

• Collaboration & Cross-Functional Efforts

  • Partner with Product, Design, and Marketing to rapidly prototype and launch new ideas

  • Communicate progress, results, and blockers with internal stakeholders, ensuring alignment on goals and timelines

  • Leverage feedback to iterate quickly and deliver effective, user-focused features

• Infrastructure & Performance

  • Ensure high availability, scalability, and reliability across all growth-related products

  • Monitor and optimize performance to deliver a smooth user experience

  • Utilize Infrastructure-as-Code (IaC) tools for seamless deployments (e.g., AWS Fargate, Docker, GitHub Actions)

• Continuous Improvement & Innovation

  • Stay abreast of industry trends, new technologies, and best practices for growth engineering

  • Contribute ideas to enhance our development tooling, documentation, and overall engineering culture

  • Actively seek out ways to increase team efficiency, code quality, and reduce technical debt

Requirements

• 6+ years of full-stack development experience, preferably in fast-paced startup environments

• Proficiency in TypeScript, React, Node.js, Express, and AWS or similar cloud infrastructure

• Experience working with analytics and A/B testing frameworks, plus a solid understanding of metrics/KPIs for growth

• Strong collaboration skills to effectively partner with cross-functional teams (Design, Product, Data, Marketing)

• Excellent communication skills; able to present complex ideas to both technical and non-technical audiences

• Growth mindset with a relentless focus on improvement and experimentation

• Familiarity with CI/CD workflows, Docker, and GitHub Actions

• Familiarity with design tools (Figma, Storybook) and project management software (Linear, Notion, Slack) is a plus

• Ability to operate independently in a remote-first environment, taking ownership of your work and driving it to completion