Kikoff
Senior Fullstack Engineer - User Retention & App Ecosystem
$244K–$292K
San Francisco +1 · Senior · Full-time · Posted Oct 1, 2026
- Location
- San Francisco
San Francisco, California, United States - Experience
- 6+ years of industry experience, or high-slope growth, with demonstrated breadth and depth of product impact.
- Education
- B.A. / B.S. / M.S. or strong self-taught fundamentals in computer science
About the job
Own and deliver user-retention and cross-app integration projects, improve core services, and drive product outcomes across Kikoff’s consumer fintech ecosystem.
What you'll do
- Lead end-to-end, data-driven retention and ecosystem integration projects affecting millions of users.
- Own 1–2 product areas across credit report retrieval, credit disputes, customer off-boarding, and cross-app integration.
- Improve observability, reliability, and operational excellence across existing services.
What they ask for
- Strong fullstack development experience with a backend focus, plus experience in React web frontend or mobile development.
- Strong system design skills for new and existing systems.
- Ability to own complex projects end-to-end and coordinate cross-functional teams.
- Strong communication and judgment in balancing business impact, delivery speed, and operational excellence.
Nice to have
- Experience with financial infrastructure, regulated environments, fintech, payments, or lending infrastructure.
- Experience with third-party APIs, classical ML deployment, observability, A/B testing, or team technical guidance.
Pay
$244,000 — $292,000 USD base salary
Tools
React, Flutter, Ruby on Rails, MySQL
AI focus
Thoughtful use of AI tools to accelerate delivery while maintaining operational excellence; classical ML model training and production deployment is also listed as preferred experience.
Model-written summary · the original posting is authoritative