Staff Software Engineer, Financial Platform

Description

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 <u>values</u> (https://www.whatnot.com/careersprinciples) 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 <u>fastest growing marketplaces</u> (https://www.nytimes.com/2025/10/28/business/dealbook/whatnot-livestream-shopping-fundraise.html) and were recently named the <u>1 Best Startup Employer in America</u> (https://www.forbes.com/lists/americas-best-startup-employers/) by Forbes. Check out the latest Whatnot updates on our <u>news</u> (https://blog.teamwhatnot.com/) and <u>engineering blogs</u> (https://medium.com/whatnot-engineering) and join us as we enable anyone to turn their passion into a business and bring people together through commerce.

&nbsp;Role&nbsp;

The Payments - Treasury team at Whatnot are globally responsible for how our business moves and records money and credit in all customer transactions; and how taxes, customs, returns, refunds and more just work, no matter where our customers are in the world. We are deeply connected with the foundations of our business and have unlocked tremendous growth within and across international territories, while creating exciting new ways for our users to interact and transact on the platform. You’ll collaborate closely with our partner team, Payments - Experience, and with other teams and senior leaders across Whatnot.

To keep the flywheel spinning, we’re looking to make a number of substantial improvements to critical infrastructure supporting payment scale & reliability, diversity of payment options, fraud mitigation, and improvements in transaction modelling and tax to further provide a seamless international marketplace. Each member of the team has a number of individual responsibilities and is trusted to advance an aspect of the domain as an expert in collaboration with the leadership team. Your ability to make good trade-offs, exercise good judgment and communicate effectively is essential to us.

We offer flexibility to work from home or from one of our global office hubs, and we value in-person time for planning, problem-solving, and connection. Team members in this role must live within commuting distance of our Dublin hub.

&nbsp;You&nbsp;

Curious about who thrives at Whatnot? We’ve found that embodying a low ego, growth mindset, and high-impact drive goes a long way here.

As our next Staff Software Engineer, you should have 8+ years of software development experience building scalable systems that can handle millions of users, plus:

Excellent product instincts. You first think about users and long term objectives when designing a technical solution.

You have designed complex distributed systems that power products used by millions of users.

You’re seasoned in defining the technical roadmap for team, identifying areas that need improvement and leading cross-team solutions.

You can identify, architect, and build the right systems or products to improve the business.

You deeply understand and can explain the various trade offs made in decisions.

You enable collaboration across multiple teams to deliver on cross-team initiatives, while delegating ownership and uplifting those around you.

You can mentor others, and prioritize building inclusive, supportive teams.

You’re a project owner - you have strong ownership instincts and can own projects from inception to production to maintenance.

You’re known for shipping high quality products and features quickly and iteratively towards the ultimate goal.

You’re an excellent problem solver and don’t need to be told exactly what to do.

You’re open to doing frontend work when required.

Have the ability to quickly become effective in new technologies.

Have experience working with payment systems, infrastructure, and international commerce (nice to have).

Have startup experience at a high-growth company (nice to have).

Knowledge of multiple programming languages (we primarily use Python, Elixir, JavaScript - direct experience is nice to have for a well balanced candidate).

&nbsp;Benefits&nbsp;

Flexible&nbsp;Time&nbsp;off&nbsp;Policy&nbsp;and&nbsp;Company-wide&nbsp;Holidays&nbsp;(including&nbsp;a&nbsp;spring&nbsp;and&nbsp;winter&nbsp;break)

Health&nbsp;Insurance&nbsp;options&nbsp;including&nbsp;Medical,&nbsp;Dental,&nbsp;Vision

Work&nbsp;From&nbsp;Home&nbsp;Support

Care&nbsp;benefits

Retirement;&nbsp;401k&nbsp;offering&nbsp;for&nbsp;Traditional&nbsp;and&nbsp;Roth&nbsp;accounts&nbsp;in&nbsp;the&nbsp;US&nbsp;(employer&nbsp;match&nbsp;up&nbsp;to&nbsp;4%&nbsp;of&nbsp;base&nbsp;salary)&nbsp;and&nbsp;Pension&nbsp;plans&nbsp;internationally

Monthly allowance to dogfood the app

Parental&nbsp;Leave

Please note: Whatnot will only contact you through official @whatnot.com email addresses. If you see an email impersonating a Whatnot recruiter, please disregard and report it as spam.

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.

Experience: 8+ years

Visa: US citizen/visa only