Fullstack Engineer

About The Company
Join the Future of Commerce with Whatnot! Whatnot is the largest live shopping platform in North America and Europe, revolutionizing the way people buy, sell, and discover their favorite items. We are redefining e-commerce by seamlessly blending community, entertainment, and shopping into a vibrant ecosystem tailored for passionate users. As a remote co-located team with hubs across the US, UK, Germany, Ireland, Poland, and Australia, we are committed to building the future of online marketplaces through innovation and collaboration. Our platform hosts a diverse range of categories including fashion, beauty, electronics, collectibles such as trading cards and comic books, and even live plants, offering something for everyone. As one of the fastest-growing marketplaces, we are driven by bold, forward-thinking problem solvers eager to make an impact in the world of commerce. We continuously update our platform and share insights through our news and engineering blogs, inviting talented individuals to join us in enabling anyone to turn their passion into a business and bring people together through commerce.
About The Role
We are seeking a highly skilled Senior Fullstack Engineer to join our International Engineering team. In this role, you will play a pivotal part in expanding Whatnot beyond the US into key international markets including the UK, France, Germany, Australia, and more. Your primary responsibility will be to enhance the international user experience across our platform, ensuring a seamless and engaging experience for users worldwide. As a core team member, you will work across the entire technology stack to solve targeted user problems, unlock new features, and support the growth of our international footprint. You will lead end-to-end solutions, translating ambiguous business challenges into clear technical strategies, and driving delivery through experimentation and innovation. The role offers flexibility to work remotely or from one of our global office hubs, with the expectation that team members residing near our New York hub will participate in in-person planning, collaboration, and problem-solving sessions. This position is ideal for a proactive, autonomous problem solver with a passion for building impactful products and a strong sense of ownership.
Qualifications

• Bachelor’s degree in Computer Science, Engineering, or a related field, or equivalent work experience
• 5+ years of software development experience in high-growth startup environments
• Proven experience in full-stack development, building scalable and high-performance applications
• Backend expertise with Python and experience working with Postgres databases is a plus
• Web development proficiency with React and GraphQL for API development
• Exposure to modern frontend frameworks such as Next.js is preferred
• Strong product instincts with a user-centric approach to problem-solving
• Excellent mentorship skills and commitment to fostering inclusive, supportive teams
• Demonstrated ownership of projects from inception through to deployment and maintenance
• Ability to ship features rapidly while maintaining high-quality standards
• Autonomous problem-solving skills with a quick aptitude for learning new technologies
• Proven track record of delivering impactful features on time

Responsibilities

• Collaborate with cross-functional teams to design, develop, and implement international features and enhancements
• Translate complex business needs into scalable technical solutions
• Lead end-to-end project ownership, ensuring timely delivery and quality standards
• Optimize the international user experience across all product touchpoints
• Experiment with new features and technologies to improve platform performance and usability
• Mentor junior team members and promote best practices within the engineering team
• Participate in code reviews, technical discussions, and knowledge sharing sessions
• Support the deployment and maintenance of features in a production environment
• Engage with global teams to align on product roadmaps and technical strategies
• Continuously monitor and improve system scalability, security, and reliability

Benefits

• Generous holiday and time-off policies to promote work-life balance
• Comprehensive health insurance options including Medical, Dental, and Vision coverage
• Support for remote work with home office setup allowances
• Monthly stipends for cell phone and internet expenses
• Care benefits and wellness allowances to support overall well-being
• Annual childcare allowances and lifetime family planning benefits such as adoption or fertility expenses
• Retirement plans including 401(k) with employer matching in the US, and pension plans internationally
• Monthly allowance to use Whatnot as a buyer and seller (dogfooding program)
• Paid parental leave of 16 weeks plus a gradual return-to-work program
• Opportunities for professional growth and development in a dynamic environment

Equal Opportunity
Whatnot is proud to be an Equal Opportunity Employer. We value diversity and are committed to creating an inclusive environment for all employees. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, parental status, disability, or any other protected characteristic. We believe that a diverse workforce enhances our innovation, culture, and overall success, and we actively encourage applications from individuals of all backgrounds to join our team.