Alt
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Alt is unlocking the value of alternative assets, starting with the $5 B trading-card market. We let collectors buy, sell, vault, and finance their cards in one place and we are backed by leaders at Stripe, Coinbase, Seven Seven Six, and pro athletes like Tom Brady and Giannis Antetokounmpo. Our next frontier is real-time pricing at scale—the Alt Value that powers every trade, loan, and product on the platform.
The Role
Are you a data engineer who thrives on building robust pipelines and solving complex data challenges? In this role, you'll own Alt's critical data infrastructure that powers our pricing model and marketplace insights by ingesting transaction and listing data from dozens of external marketplaces. You'll be responsible for ensuring our data pipelines deliver fresh, accurate information that drives pricing decisions, market analytics, and business intelligence across the entire platform.
What you'll do here
- Design, optimize and own data pipelines that scrape, process and ingest transaction and listing data from major auction houses and marketplaces.
- Build comprehensive monitoring and alerting systems to track latency, uptime, and coverage metrics across all data sources.
- Continuously improve our data infrastructure by modernizing storage and processing technologies, reducing manual interventions, and optimizing for cost, performance, and reliability.
- Partner with internal teams to understand data usage patterns and ensure pipelines deliver clean, standardized data that meets product requirements.
This is a perfect fit if you...
- Care deeply about data quality and understand that extraction is only the beginning - the real value comes from delivering clean and usable data.
- Thrive in a startup environment where you can make immediate impact and own critical systems end-to-end.
- Take an incremental approach to improvements, preferring evidence-based decisions over wholesale replacements.
- Are intellectually curious about how data flows through systems and passionate about automation opportunities.
- Want to work at the intersection of data engineering and product, understanding how your pipelines directly impact business outcomes.
What you bring to the table
Must-haves:
- 3-4 years of experience in data engineering or related fields
- Strong Python proficiency with at least 3 years of hands-on experience
- Proven experience with large-scale data processing using dataframe technologies (Pandas, Polars, PySpark, or similar)
- Hands-on experience with pipeline orchestration tools (Airflow, Dagster, or similar DAG-based systems)
- Track record of owning at least one data pipeline end-to-end within the past 2 years
- Solid SQL skills for data analysis and transformation
- Previous startup experience - you understand the pace and adaptability required in a fast-moving environment
- A pragmatic mindset focused on delivering value incrementally rather than pursuing perfection
Nice-to-haves:
- Experience with web scraping technologies (Selenium, Puppeteer, Beautiful Soup)
- Familiarity with data infrastructure and cloud services (AWS preferred)
- Interest in or knowledge of trading cards, collectibles, or alternative asset markets
- Experience with LLM-based automation tools for data extraction and processing
What You’ll Get From Us
- A seat at the table to help shape the future of Alt and the alternative asset space
- Autonomy and ownership on projects that matter
- $100/month work-from-home stipend
- $200/month wellness stipend
- WeWork office stipend
- 401(k) retirement benefits
- Flexible vacation policy
- Generous paid parental leave
- Competitive healthcare benefits, including HSA, for you and your dependent(s)
Base salary range: $155,000–$165,000, plus equity. Offers may vary based on experience, location, and other factors.
Ready to apply?
Apply to Alt
Alt is unlocking the value of alternative assets, starting with the $5 B trading-card market. We let collectors buy, sell, vault, and finance their cards in one place and we are backed by leaders at Stripe, Coinbase, Seven Seven Six, and pro athletes like Tom Brady and Giannis Antetokounmpo. Our next frontier is real-time pricing at scale—the Alt Value that powers every trade, loan, and product on the platform.
We’re looking for a Senior Fullstack Engineer to build the engine behind a marketplace that moves hundreds of millions of dollars in GMV. Our Auctions team doesn't just "list items"—we build the high-stakes, high-concurrency environments where collectors’ dreams are realized.
In this role, you’ll sit at the intersection of high-scale transaction systems and cutting-edge AI. You’ll build products that provide upfront liquidity to consignors, personalized discovery for buyers, and professional-grade tools for power sellers. If you’re energized by the idea of shipping features that millions of hobbyists and power-users rely on, we want to talk.
What You’ll Do Here:
- Architect the Auction Engine: Build and scale the high-concurrency bidding and listing systems that power 9-figure annual GMV.
- Ship AI-Powered Liquidity: Develop next-gen features that leverage AI to provide instant valuations and upfront liquidity to our consignors and sellers.
- Personalize the Hobby: Use data and machine learning to build rich, personalized discovery experiences that match unique collectibles to the right buyers.
- Empower Power Users: Design and launch sophisticated management tools for everyone from high-frequency "power sellers" to veteran hobbyists.
- Own the Experience: Build end-to-end—from the low-latency backend logic required for live bidding to the sleek, responsive UI where the action happens.
- Drive Technical Excellence: Mentor the team and set the standard for code quality, system reliability, and performance.
This is a perfect fit if you…
- Love High-Scale Challenges: You aren’t intimidated by 9-figure transaction volumes or the "thundering herd" of bidders in the final seconds of an auction.
- Are an AI Pragmatist: You know how to take LLMs or computer vision models and turn them into practical, user-facing features that solve real business problems.
- Think in Systems & UX: You can visualize how a data schema change on the backend will ripple out into the user experience for a power seller.
- Have High Agency: You thrive in an environment where you are expected to identify the highest-leverage work and execute on it without a hand-holding manual.
What You Bring to the Table:
- 5+ years of experience building and scaling complex applications (Python, Postgres, AWS/Cloud infra).
- Modern Frontend Mastery: Deep experience with React, TypeScript, and building high-performance, real-time UIs.
- Data-Driven Mindset: Experience working with personalization engines, recommendation systems, or AI/ML integrations is a major plus.
- Product Instincts: You don’t just build what’s on the ticket; you understand the collector mindset and build features that delight them.
- Reliability Under Pressure: You have a track record of building systems that stay up when the stakes (and the traffic) are highest.
What You’ll Get From Us:
- A seat at the table to help shape the future of Alt and the alternative asset space
- Autonomy and ownership on projects that matter
- $100/month work-from-home stipend
- $200/month wellness stipend
- WeWork office stipend
- 401(k) retirement benefits
- Flexible vacation policy
- Generous paid parental leave
- Competitive healthcare benefits, including HSA, for you and your dependent(s)
Base salary range: $140,000-$180,000, plus equity. Offers may vary based on experience, location, and other factors.
Ready to apply?
Apply to Alt
Alt is unlocking the value of alternative assets, starting with the $5 B trading-card market. We let collectors buy, sell, vault, and finance their cards in one place and we are backed by leaders at Stripe, Coinbase, Seven Seven Six, and pro athletes like Tom Brady and Giannis Antetokounmpo. Our next frontier is real-time pricing at scale—the Alt Value that powers every trade, loan, and product on the platform.
We’re looking for a Senior Fullstack Engineer who wants to build the financial engine of our platform. You’re not just building a checkout flow; you’re powering the liquidity that makes this marketplace work. You’ll join a high-impact team responsible for our custom double-entry ledger, payment provider integrations, and our core lending products.
If you have a "measure twice, cut once" mindset for backend integrity but still move with a bias toward action on the frontend, you’ll thrive here.
What You’ll Do Here:
- Engineer Financial Integrity: Build and maintain our custom-built double-entry ledger system to ensure every cent is accounted for across the platform.
- Own Lending Infrastructure: Design and scale our lending products—from the logic of credit disbursements to the automated lifecycle of loan management.
- Architect Integrations: Design and implement robust integrations with payment gateways and banking partners, ensuring 99.99% reliability and seamless reconciliation.
- Own the UX of Money: Create high-trust user interfaces for payments and lending that make complex financial actions feel simple, transparent, and secure.
- Balance Rigor with Speed: Make thoughtful trade-offs between rapid feature shipping and the uncompromising correctness required for financial systems.
- Be a Multiplier: Level up the team through rigorous code reviews, technical documentation, and mentorship.
This is a perfect fit if you…
- Are Obsessed with Correctness: You understand that in payments, "mostly working" is a failure. You think deeply about idempotency, race conditions, and data consistency.
- Think Like a Product Owner: You don't just build a "pay button"; you understand the flow of funds and how to communicate financial status clearly to the user.
- Love Building Infrastructure: You’re energized by the challenge of building a ledger or a lending engine from the ground up.
- Are Pragmatic: You know when to build a custom internal solution and when to leverage a third-party API to get the job done.
What You Bring to the Table:
- 5+ years of experience with a heavy focus on backend systems (Python, Postgres, AWS) and a proven ability to build modern frontends (React, TypeScript).
- Fintech or Payments experience: You’ve worked with ledgers, payment processors, or lending products and understand the complexities of moving money.
- Database Mastery: You are an expert in SQL and relational database design—you know how to write a transaction that won't fail under load.
- Fullstack Ownership: A track record of taking a complex financial feature from a technical design doc all the way to a polished UI in production.
- Bonus: Experience with distributed systems, credit/risk modeling, or the alternative asset space.
What You’ll Get From Us:
- A seat at the table to help shape the future of Alt and the alternative asset space
- Autonomy and ownership on projects that matter
- $100/month work-from-home stipend
- $200/month wellness stipend
- WeWork office stipend
- 401(k) retirement benefits
- Flexible vacation policy
- Generous paid parental leave
- Competitive healthcare benefits, including HSA, for you and your dependent(s)
Base salary range: $140,000-$180,000, plus equity. Offers may vary based on experience, location, and other factors.
Ready to apply?
Apply to Alt