Senior Software Engineer, CX

Join the Future of Commerce with Whatnot! Whatnot is the largest live shopping platform in North America and Europe to buy, sell, and discover the things you love. Whether it's trading cards, fashion, electronics, or live plants, our sellers are building real businesses across hundreds of categories. We're building live commerce at a scale that's never been done in the West, and there's no playbook to copy. The people here are shaping how an entirely new industry develops. As a remote co-located team, we're inspired by our values and anchored in hubs across the US, UK, Ireland, Poland, Germany, and Australia. We move fast, stay close to our users, and focus on the work that drives the most impact. We're one of the fastest growing marketplaces and were recently named the #1 Best Startup Employer in America by Forbes. Check out the latest Whatnot updates on our news and engineering blogs and join us as we enable anyone to turn their passion into a business and bring people together through commerce. Role We’re looking for a Senior Backend Engineer to join the Customer Experience team and help us build a world-class Customer Support platform. With Whatnot’s rapid growth comes a high volume of complex support needs—spanning technical, purchasing, and logistics issues for both buyers and sellers. Our team is responsible for resolving them quickly, reliably, and with high customer satisfaction. As a member of the team, you’ll build new user‑facing experiences, scale internal infrastructure, and design intelligent AI‑powered automations to help us solve thousands of customer issues per hour. You’ll lead solutions end to end. You’ll translate ambiguous business problems into clear technical solutions and drive delivery and experimentation. Your role will involve creative problem‑solving to balance development speed, product impact, and technical excellence. Team members in this role are required to be within commuting distance of our San Francisco, Seattle, Los Angeles, or New York hubs. You Curious about who thrives at Whatnot? We’ve found that low ego and a growth mindset, while leaning into action, details, and impact goes a long way here. As our next Backend Engineer, you should have 5+ years of full‑time software engineering experience in high growth startups, plus: Bachelor’s degree in Computer Science, a related field, or equivalent work experience. Backend Expertise: Proven track record of building end‑to‑end product experiences and scaling high‑scale backend systems. Experience with Python, Elixir, and/or Postgres is a plus. Experience with Python, Elixir, and/or Postgres is a plus. Ownership Mindset: Own projects holistically from inception to production and beyond. You are known for shipping high‑quality products and platform level initiatives fast. Product Instinct: Excel at translating user needs to effective technical solutions. Problem Solving: Thrive in ambiguity and tackle challenging problems with creativity and autonomy. Team Leadership: Proactively improve the team environment and foster inclusive, supportive team culture. Benefits Flexible Time off Policy and Company‑wide Holidays (including a spring and winter break) Health Insurance options including Medical, Dental, Vision Work From Home Support Home office setup allowance Monthly allowance for cell phone and internet Care benefits Monthly allowance for wellness Annual allowance towards Childcare Lifetime benefit for family planning, such as adoption or fertility expenses Retirement; 401k offering for Traditional and Roth accounts in the US (employer match up to 4% of base salary) and Pension plans internationally Monthly allowance to dogfood the app All Whatnauts are expected to develop a deep understanding of our product. We're passionate about building the best user experience, and all employees are expected to use Whatnot as both a buyer and a seller as part of their job (our dogfooding budget makes this fun and easy!). Parental Leave 16 weeks of paid parental leave + one month gradual return to work *company leave allowances run concurrently with country leave requirements which take precedence. EOE Whatnot is proud to be an Equal Opportunity Employer. We value diversity, and we do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, parental status, disability status, or any other status protected by local law. We believe that our work is better and our company culture is improved when we encourage, support, and respect the different skills and experiences represented within our workforce. #J-18808-Ljbffr Whatnot