Internship - Software Engineering - Winter/Summer 2026

Slash is building the future of business banking, one industry at a time. We believe businesses deserve financial infrastructure tailored to how they actually operate. That's why we're creating a new category of business banking. We combine the reliability of traditional banking (high yields, competitive rewards, and comprehensive security) with industry-specific features that make businesses more efficient, more competitive, and more profitable.

Started in 2021, Slash is one of the fastest growing fintechs in the world. We power over $10B in payments each year and generate 9 figures in revenue, while shipping fast and building products used by thousands of global businesses.

We're backed by some of the best investors in the world including Menlo Ventures, NEA, Y Combinator, Stanford University, and the founders of Tinder and Plaid. Slash is headquartered in San Francisco, and has a strong in-person culture. You’ll own the product vision, roadmap, and execution — translating complex financial systems into simple, reliable, and scalable experiences.

***We are looking for Interns to join us in the Winter or Summer programs for 2026! Please apply if you would like to join us for one of these terms.*** These will be paid internships.

Ideally 3-4 month terms, between January 2026-September 2026 (Some longer internships may be considered depending on the candidate)

What we are looking for:

• Currently pursuing a B.S. (or higher) in Computer Science or a related technical field, with an expected graduation in the next 1-4 years.

• Demonstrated experience building an impressive mobile app or website business with multiple, functional features that has reached a large user base.

• Proven track record of delivering high-quality products and/or maintaining a GitHub portfolio of notable side projects.

• Eagerness to thrive in a fast-paced environment while continuously growing and mastering your craft.

• Motivation to learn new technologies and adapt to varying situations.

• Strong understanding of design patterns and best practices across mobile, web, front-end, and back-end development.

• Genuine interest in FinTech, a fast-paced startup environment, and a high level of agency and ownership over projects.

• Opportunity for high growth at a Series B, well-funded company

• High autonomy + ownership culture

• Paid lunches every day

• Work out of our new San Francisco office space