Founding Full Stack Engineer
Company: twenty80.io
Location: San Francisco
Posted on: February 19, 2026
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Job Description:
Job Description Job Description About the Role An early-stage
startup is hiring a Founding Full Stack Engineer to help build its
product from the ground up. This role will work closely with the
founding team to design, develop, and ship the initial versions of
the platform while laying the technical foundation for future
growth. This position offers high ownership, broad responsibility
across the stack, and direct impact on product direction,
architecture, and engineering culture. What You’ll Do Build the
initial product and core features from zero to production Design
and implement frontend and backend systems with scalability in mind
Own services, data models, and APIs end to end Collaborate directly
with founders on product requirements and technical tradeoffs Make
foundational decisions around architecture, tooling, and
infrastructure Write clean, maintainable code and establish
engineering best practices Set up deployment pipelines, monitoring,
and basic DevOps workflows Help hire and mentor future engineers as
the team grows Tech Environment The stack is flexible, but commonly
includes: Frontend: React, TypeScript, Next.js Backend: Node.js
(Express/NestJS) or Python (Django/FastAPI) Databases: PostgreSQL,
Redis Cloud & Infrastructure: AWS or GCP, Docker, CI/CD APIs: REST,
GraphQL Version Control: Git (GitHub or similar) What We’re Looking
For 6 years of professional software engineering experience Strong
full stack background with modern JavaScript/TypeScript Experience
building products from early stage through production Solid
understanding of backend systems, databases, and APIs Comfort
working with ambiguity and evolving requirements Experience owning
technical decisions without heavy process Prior startup or
founding-team experience strongly preferred Compensation & Benefits
Base Salary: $150,000 – $190,000 (early-stage, San Francisco
market) Equity: Meaningful founding-level equity stake Benefits:
Health, dental, vision insurance; flexible PTO Work Model: Hybrid
or remote-friendly within U.S. time zones Equal Opportunity This
opportunity is with an equal opportunity employer. All qualified
applicants will be considered without regard to race, color,
religion, gender, sexual orientation, gender identity, age,
disability, or veteran status.
Keywords: twenty80.io, Ceres , Founding Full Stack Engineer, IT / Software / Systems , San Francisco, California
