Full Stack Engineer

Upside is hiring an experienced Senior/Staff Full Stack Engineer who can navigate the entire stack, from building new pages on our React dashboard, to setting up new Django backend APIs to power them, and building new LLM-powered data analysis agents to deliver insights to our customers. We’re looking for someone excited to bridge multiple systems and with a keen eye for good UX and design in customer-facing systems.

About Upside

Upside ((Use the "Apply for this Job" box below).) is building a next-generation knowledge engine to solve a common B2B challenge: understanding what’s effective in go-to-market efforts. Our founding team previously scaled Branch to over $100M revenue and a $4B valuation.

We have raised a substantial first round from top-tier investors like XYZ and Emerson Collective and are part of HF0 (), a selective startup residency program.

Learn more about the revenue intelligence problems we’re addressing:

We seek an Senior/Staff Full Stack Engineer capable of working across the stack—from developing new React dashboard pages, setting up Django APIs, to building LLM-powered analytics tools. The ideal candidate is excited about integrating multiple systems and has a strong focus on UX and design.

As part of Upside, you’ll join an impact-driven team, contributing to our customer dashboard and backend services. You’ll ship new features quickly, launch new workflows within the first month, and help shape our architecture and best practices long-term.

What You'll Do

• Build:
  Develop and deploy critical features on our customer dashboard
• Own:
  Lead architecture and design of our tech stack for long-term scalability
• Learn:
  Build data-intensive AI applications and deploy LLMs at scale
• Mentor:
  Share best practices for full stack development and testing with team members
• Collaborate:
  Work with the team to develop data-rich functionalities, including reporting systems and LLM analysis agents
• Engage daily with founders and team members to advance company goals
• Focus on results over effort, emphasizing outcome-driven work
• In-person collaboration is valued; SF Bay Area residents are expected in the office most days, others will visit regularly

We seek someone who thrives on challenges, operates independently with good judgment, and enjoys wearing multiple hats. Here’s what we’re looking for:

Required Skills

• Senior or equivalent experience in a technical role
• Extensive experience with data-heavy React frontends
• Proven ability to ship production features quickly
• Experience with responsible LLM-assisted development
• Bonus: Django and Python experience

Soft Skills

• Self-motivated with high internal drive
• Strong communicator, able to explain technical concepts clearly
• Interested in understanding business and customer needs
• Open to feedback and collaborative work

Why Join Upside?

• Big Potential: Solving a universal B2B problem with a unique approach that appeals to enterprise clients
• Impact: Your work directly influences product development and customer decision-making
• Growth: Early joiners will grow with the company, taking on new challenges
• Culture: Small, experienced team that values results, collaboration, and data-driven decisions

What We Offer

• Flexible PTO
• Equity
• Comprehensive health benefits
• HSA with company contributions
• Pre-tax commuter benefits with employer contribution