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Sr. Back-End Engineer

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80Twenty

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Location:
United States , San Francisco

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

200000.00 - 300000.00 USD / Year

Job Description:

This is a once in a life time opportunity to join what is soon to be a unicorn pharma / health startup. This role offers top of the market salary range as well as a very strong equity package. We are looking for a top of the line Sr. Back-End Engineer who is ready to work hard and rapidly grow with our client. From launching disstruptive new features to rapidly experimenting with fresh verticals, you’ll help shape what’s next for our client. This role is perfect for someone who is able to be move quickly in the world of Web and Mobile development, while having good architectural and design sense to build effectively. You are a good fit for this role if you: work hard (this is not a 9 to 5 role), are ambitious, have a very high attention to detail, and are always looking for creative ways to solve problems.

Job Responsibility:

  • Lead the development, optimization and expansion of core backend services
  • Drive best practices in performance, security, and scalability as our client scales rapidly
  • Work closely with Product, Design and Front-end teams to deliver seamless, intuitive user experiences
  • Own key architectural decisions, mentoring engineers, and elevating back-end excellence across the company
  • Build out data-driven services and systems to improve the customer experience
  • Mentor an influence engineering culture, fostering innovation and technical ownership within the team

Requirements:

  • Startup mindset
  • 6+ years of back-end development experience, with deep expertise with Typescript/Python
  • Experience leading technical initiatives and shipping scalable, high-performance systems to support web and mobile applications
  • Strong knowledge of modern back-end tooling
  • Strong knowledge of bash scripting and linux/unix commands
  • A passion for creating fast, optimized and elegant solutions to difficult problems
  • Expertise with AI code generation tools
What we offer:

equity

Additional Information:

Job Posted:
December 23, 2025

Employment Type:
Fulltime
Work Type:
On-site work
Job Link Share:

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