Earnin

Senior Full Stack Engineer

Earnin$210K — $257K *
Information Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's (or higher) degree in Computer Science or related field, or equivalent technical experience.
  • Strong proficiency in modern frontend technologies including HTML, CSS, JavaScript, TypeScript, React, and Next.js.
  • Proficiency in backend development with Python and Django, focusing on RESTful API design and service architecture.
  • Experience with frontend architecture, including state management and performance optimization.
  • Experience designing backend systems at scale, including database integration and caching strategies.
  • 4+ years of industry experience in both frontend and backend development.
  • Familiarity with cloud environments (AWS, GCP, or Azure) for full-stack delivery.

Responsibilities

  • Collaborate with Product and Design teams to build user experiences using modern tech.
  • Own frontend and backend architecture for scalability and maintainability.
  • Lead the design of complex frontend systems using React and Next.js.
  • Develop backend services and APIs in Python with Django.
  • Establish full-stack engineering standards for tools and practices.
  • Drive technical initiatives that align with product strategy.
  • Identify technical risks and opportunities, providing guidance and analysis.

Benefits

  • Hybrid work opportunity requiring in-office presence two days a week.
  • Equity in the company as part of compensation package.
Full Job Description
POSITION SUMMARY

We seek an experienced, collaborative, and resourceful Senior Full Stack Engineer to join our team. Our Early Bets initiatives are critical to EarnIn's success, providing new experiences and products for our users to empower them with a more comprehensive ecosystem of solutions. We seek engineers who thrive in uncertainty, excel at defining technical solutions in ambiguous environments, and collaborate closely with Product teams to refine requirements. The ideal candidate has experience building 0-to-1 products end-to-end and demonstrates a strong ability to design and implement scalable architectures across the full stack to support rapid product evolution. Candidates with backgrounds in early-stage software products engineered for scale, or who have worked in Research & Development on new technologies, will fit well on our team.

The base salary range for this full-time position is $210,000 - $257,000 plus equity and benefits. Our salary ranges are determined by role, level, and location. This is a hybrid position in Mountain View (Headquarters) and will require in-office work 2 days a week.

WHAT YOU'LL DO
  • Partner with Product and Design to define, build, and evolve user experiences across the full stack using modern frontend and backend technologies.
  • Own and evolve both frontend and backend architecture to ensure scalability, performance, accessibility, and long-term maintainability.
  • Lead the design and implementation of complex frontend systems using React, TypeScript, and Next.js, including SSR, routing, data fetching, and performance optimization.
  • Design and build robust backend services and APIs in Python with Django, focusing on reliability, security, and scalability.
  • Establish and uphold full-stack engineering standards, including patterns, tooling, testing strategies, and CI/CD best practices.
  • Drive cross-team technical initiatives, aligning frontend and backend architecture with platform capabilities and product strategy.
  • Proactively identify technical risks and opportunities across the stack, providing clear technical direction and tradeoff analysis.
  • Mentor and guide engineers across frontend and backend disciplines, raising the bar on code quality, architectural thinking, and delivery practices.
  • Design and implement robust unit, integration, and end-to-end automation tests across the full stack.
  • Define and monitor full-stack metrics (performance, reliability, user behavior) to inform product and technical decisions.

WHAT WE'RE LOOKING FOR
  • Bachelor's (or higher, e.g., MS, or PhD) in Computer Science or a related technical field involving coding, or equivalent technical experience.
  • Strong proficiency in modern frontend development, including HTML, CSS, JavaScript, TypeScript, React, and Next.js.
  • Proficiency in backend development using Python and Django, including RESTful API design, data modeling, and service architecture.
  • Strong experience with frontend architecture, including state management, component design, design systems, and performance optimization.
  • Experience designing and operating backend systems at scale, including databases, caching, queuing, and API integrations.
  • Experience building and operating production applications using both server-side and client-side rendering.
  • Deep understanding of software engineering best practices across the SDLC, including testing, code reviews, observability, and operational excellence.
  • 4+ years of industry experience, with meaningful depth across both frontend and backend development.
  • Experience working in cloud-based environments (AWS, GCP, or Azure), particularly as it relates to full-stack delivery and integration.
  • Experience using AI-assisted development tools (e.g., Copilot, Cursor, LLMs) is a plus.

#LI-Hybrid

About Earnin

Earnin is a financial services company that provides a mobile app that allows users to access their earned wages before payday. The app uses a proprietary algorithm to determine how much money users can access based on their work history and other factors. Earnin was founded in 2013 and is headquartered in Palo Alto, California.
Learn more about Earnin
Size
200 employees
Industry
Founded
2012

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