Fluxx, legally known as Fluxx Labs, was founded in 2010 to "democratize philanthropy" by helping teams build capacity and strengthen operations via smart automa
Senior Fullstack Engineer
Location
New York
Posted
75 days ago
Salary
$153K - $231K / year
Seniority
Senior
Job Description
Senior Fullstack Engineer
Fluxx Labs
• Design, build, and maintain fullstack features across the Grantseeker Pro platform and related products • Collaborate cross-functionally with product managers, designers, and engineers to deliver high-impact user experiences • Contribute to system architecture and technical decision-making, ensuring scalability, performance, and reliability • Write clean, maintainable, and well-tested code across frontend and backend systems • Lead and participate in code reviews, providing thoughtful feedback and mentoring other engineers • Improve development processes, tooling, and engineering standards to increase team velocity and product quality
Job Requirements
- 10+ years of professional software engineering experience, with strong fullstack development expertise
- Proficiency in React/TypeScript/JavaScript, with experience building modern web applications (frontend and backend)
- Experience working with PostgreSQL and designing efficient data models
- Familiarity with cloud infrastructure, preferably Google Cloud Platform (GCP)
- Experience with or interest in Claude Code (Anthropic) or AI-assisted development tools
- Strong problem-solving skills, ownership mindset, and ability to work effectively in a remote, collaborative environment
Benefits
- Medical, dental, and vision insurance
- Flexible time off
- Paid sick leave
- 12 weeks of fully-paid parental leave
- Annual learning and development stipend
- Internet stipend
- One-time home office set-up stipend
- 401(k) retirement plan with company match
- Incentive stock options
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