Job Title: Senior Fullstack Engineer- GrantSeeker Company Name: Fluxx Job Url: https://www.ziprecruiter.com/jobs-search/5?search=software+engineer&location=USA&radius=25&days=5&refine_by_employment=&refine_by_location_type=only_remote&refine_by_salary=&refine_by_salary_ceil=&refine_by_apply_type=&refine_by_experience_level=mid%2Csenior&lk=YN_OdejDNoRDCaecw9769A Job Description: Senior Fullstack Engineer- GrantSeeker Fluxx Remote Apply $125.40K - $165.30K/yr Estimated pay Full-time Posted 2 days ago Job description Job Summary: Fluxx is looking for a highly motivated Senior Fullstack Engineer to join the Grantseeker Engineering team. In this role, you will design, build, and maintain fullstack features for the Grantseeker Pro platform, collaborating with cross-functional teams to deliver high-quality software that impacts nonprofits and grantmakers worldwide. Responsibilities: • 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 Qualifications: Required: • 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 Company: Fluxx is a cloud platform that provides innovative grants management software solutions for funders and doers. Founded in 2010, the company is headquartered in San Francisco, USA, with a team of 51-200 employees. The company is currently Growth Stage. Report About FLUXX Sourced by ZipRecruiter Industry Desktop applications development Company size 51 - 200 Employees Headquarters location San Francisco, CA, US Year founded 2010 Website fluxx.io Social media View All FLUXX Jobs Senior Fullstack Engineer- GrantSeeker Fluxx Apply