Full Stack Software Engineer - Product

About Basic Capital

Basic Capital is a fintech company disrupting America’s $1T retirement industry by building the mortgage for retirement, unlocking market ownership, and making wealth accessible to every American. Our mission is to create products, platforms, and a credit marketplace that power a fundamentally new retirement system.

Our founding team includes leaders from Goldman Sachs, Uber, Block, Stripe, and Robinhood. We’re backed by top investors such as Lux Capital, Forerunner Ventures, BoxGroup, SVAngel, Inspired Capital, and Henry Kravis. Based in SoHo, NYC, we’re assembling a lean, high-performance team committed to reducing wealth inequality.

For more information, visit Basic Capital’s website .

You will

• Join a small, high-impact team responsible for delivering exceptional user experiences across iOS, Android, and web platforms

• Design and implement our new developer-facing API that will power third-party integrations

• Architect and ship AI-powered features that enhance the user experience

• Own the full product development lifecycle from design collaboration through deployment and monitoring

• Participate in architecture discussions, planning, and code reviews across the stack

Required Competencies

• Experience building and deploying agentic systems and embedding AI/ML in user-facing applications

• Strong experience with modern backend frameworks, RESTful API design, and event-driven systems

• Proficiency in any of the following: Kotlin, Swift, Rust, Java, Go, C/C++, Python, Ruby, or TypeScript

Preferred Competencies

• Experience designing and documenting developer APIs

• Experience in fintech or early-stage technology companies

• Experience working in Kotlin backends

• Experience with Temporal for asynchronous workflow orchestration

Cultural Fit

• Passionate about solving big social problems with pragmatic solutions

• Aptitude for complexity and curiosity for financial markets

• Enjoys learning new technologies and selecting the right tool for each job

• Adaptable and open to contributing across the tech stack as the team evolves

• Autonomous, high agency, accountable, and thrives in a fast-paced environment

• Strong collaboration and communication skills, working effectively in cross-functional teams

• Excited to be a part of an in-office team