• Own the end-to-end delivery of your intern project — from requirements gathering and design through implementation, testing, and demo. • Write clean, well-tested code in Ruby, Python, or other languages used by the team. • Collaborate with engineers, product managers, and designers to scope your project and incorporate feedback iteratively. • Investigate and document technical findings (e.g., performance profiles, architectural options, API design tradeoffs). • Present your work — both in-progress check-ins and a final demo — to the broader engineering organization. • Contribute to the team's day-to-day work through code reviews, bug fixes, and participation in team ceremonies.

Principal Staff Software Engineer – Data as a Service About the Role WEX is transforming into a data-driven enterprise through its modern Data-as-a-Service (DaaS) platform. At the core of this strategy is a need for world-class technical leadership—engineers who can see across domains, design foundational systems, and set the architectural direction for years to come. As a Principal Staff Software Engineer, you will play a pivotal role in shaping WEX’s DaaS platform end-to-end. You will drive the unification of data acquisition, semantic modeling, and data products, ensuring they operate together as a coherent, scalable, and trusted foundation for analytics, AI, and customer-facing experiences. This is not just a technical role—it is a platform architect and multiplier role, where you’ll be responsible for defining cross-cutting patterns, guiding teams across domains, and raising the technical bar across WEX’s data ecosystem. If you’re motivated by solving platform problems at global scale, influencing enterprise direction, and leaving behind systems that endure, this is your role. What You’ll Do - Architect the DaaS platform end-to-end: Define the next generation of WEX’s enterprise data stack spanning ingestion, semantic data modeling, metadata, and product delivery. - Establish platform standards: Set reusable frameworks for ingestion, modeling, lineage, observability, and access control that accelerate adoption across domains. - Guide technical strategy at scale: Partner with senior engineering, product, and business leaders to align data architecture with WEX’s strategic objectives. Solve for scale, reliability, and trust: Design systems that handle billions of records, guarantee semantic consistency, and deliver auditable, governed data assets. Mentor and multiply: Coach senior staff engineers and architects, instilling best practices in distributed systems, platform reliability, and semantic clarity. - Drive innovation: Explore and incorporate modern open-source and cloud-native technologies (e.g., Spark, Iceberg, Kafka, Delta, DBT, Ray, ML-ready data services). - Be the bridge: Collaborate across Data Acquisition, Semantic Modeling, Data Products, and Governance teams to ensure WEX’s data is trusted, consistent, and usable across every business domain. What You Bring - 12–15+ years of experience in software or platform engineering, with a proven track record of building and scaling large-scale data platforms. Expertise in distributed systems, data acquisition, and semantic modeling, with architectural ownership of systems processing tens of millions to billions of records per day. - Demonstrated ability to set cross-domain architectural standards and influence adoption across multiple engineering teams. - Strong background in data lifecycle management (versioning, auditability, observability, lineage, reproducibility). - Deep experience with modern data ecosystems: streaming (Kafka, Flink), batch (Spark, DBT), storage (Iceberg, Delta), orchestration (Airflow, Dagster), and APIs. - Exceptional communication and leadership skills—you can inspire engineers, influence executives, and build consensus across technical and business stakeholders. - A passion for creating platforms that endure: trusted, consistent, and empowering for analytics, AI, and products enterprise-wide. The base pay range represents the anticipated low and high end of the pay range for this position. Actual pay rates will vary and will be based on various factors, such as your qualifications, skills, competencies, and proficiency for the role. Base pay is one component of WEX's total compensation package. Most sales positions are eligible for commission under the terms of an applicable plan. Non-sales roles are typically eligible for a quarterly or annual bonus based on their role and applicable plan. WEX's comprehensive and market competitive benefits are designed to support your personal and professional well-being. Benefits include health, dental and vision insurances, retirement savings plan, paid time off, health savings account, flexible spending accounts, life insurance, disability insurance, tuition reimbursement, and more. For more information, check out the "About Us" section. Pay Range: $200,600.00 - $250,400.00

• Guide software engineers on the systematics team responsible for the definition, design, construction, integration, testing, and support of reliable and reusable software solutions • Address business opportunities through systems analysis, creation of specifications, coding, testing, and implementation of application programs and data interfaces • Develop complex applications using GN/IM/RM/MA application experience and Agile • Demonstrate experience with large scale application integration efforts • Influence multiple levels on highly technical issues and challenges • Ensure that application designs are consistent with the attributes (including scalability, availability, maintainability, and flexibility)

🚀 Join the Future of Commerce with Whatnot! Whatnot is the largest livestream 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 Seller Growth is responsible for growing sellers on Whatnot — enabling them to turn their hobbies into businesses. Within Seller Growth, the Platform pod ensures that this growth is sustainable, trustworthy, and scalable. As our next software engineer on the Seller Growth Product pod, you will design and build the systems that sit at the heart of the new seller funnel. Your work will focus on: - Protecting the funnel from fraud and abuse: Developing and scaling systems for identity verification (IDV), fraud detection, and automated trust/risk reviews that safeguard buyers while minimizing friction for good sellers. - Ship seller-facing experiences: Deliver features across onboarding, education, and seller incentive flows — working across the full stack (backend and frontend). - Build platform intelligence: Develop seller enrichment pipelines and signals to route sellers to the right onboarding, incentive, and discovery paths. - Drive growth through experimentation: Design and analyze A/B tests to guide product decisions and accelerate seller success. - Create scalable infrastructure: Build and maintain data pipelines and growth systems (e.g., notifications, lifecycle triggers) that other pods and teams can leverage. This pod works at the intersection of growth, trust, and platform-ization. You’ll be responsible for deeply technical systems (IDV, fraud signal repositories, seller enrichment pipelines, predictive models) that directly influence GMV, seller retention, and buyer trust. The pace is fast: every week, thousands of sellers apply to sell, and your work ensures that Whatnot can confidently scale this influx without compromising marketplace integrity. 👋 You 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 Fullstack Engineer, you should have (e.g. 3+ years of generalist software development experience in high growth startups), plus: - Bachelor’s degree in Computer Science, a related field, or equivalent work experience - Knowledge of multiple programming languages (we primarily use Python, Elixir, JavaScript—knowledge of these in particular not required) - Web development experience with React, using GraphQL for API development, and modern frontend applications (exposure to Next.js framework is not required but preferred) - Excellent product instincts—you first think about users rather than the best technical solution - You can mentor others, and prioritize building inclusive, supportive teams - Project owner—you’ve strong ownership instincts and can own projects from inception to production and beyond - You are known for shipping products and features lightning-fast - You’re an excellent problem solver and can operate autonomously - Ability to pick up on new technologies very quickly - Proven track record of delivering features 🎁 Benefits - Generous Holiday and Time off Policy - 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.