Senior Full Stack Software Engineer
$160k - $210kTwenty80 llc
About the Role
A growing technology startup is hiring a Senior Full Stack Software Engineer to help build and scale its core product. This engineer will work across the frontend and backend, contributing directly to customer-facing features as well as internal systems. The role offers a high level of ownership and influence over technical decisions in a fast-paced environment.
This position is well-suited for an engineer who enjoys working closely with product and design, shipping quickly, and improving systems over time.
What You’ll Do
Build and maintain full stack web applications used by customers and internal teams
Develop scalable backend services and APIs to support product features
Implement modern, responsive frontend interfaces with a focus on usability and performance
Collaborate with product managers and designers to define requirements and deliver solutions
Contribute to architectural decisions and technical roadmap planning
Write high-quality, well-tested code and participate in code reviews
Help improve engineering processes, tooling, and system reliability
Mentor junior engineers and contribute to a strong engineering culture
Tech Environment
The engineering team works with a modern startup stack, including:
Frontend: React, TypeScript, Next.js
Backend: Node.js (Express or NestJS) and/or Python (Django or FastAPI)
Databases: PostgreSQL, Redis
Cloud & Infrastructure: AWS or GCP, Docker, CI/CD
APIs: REST and GraphQL
Tools: Git, GitHub, modern monitoring and logging tools
What We’re Looking For
5+ years of professional software engineering experience
Strong full stack experience with modern JavaScript/TypeScript
Proven experience building and maintaining backend services and APIs
Solid understanding of relational databases and data modeling
Experience deploying and operating applications in cloud environments
Ability to work independently and take ownership of projects
Prior experience in a startup or fast-moving product team is a plus
Compensation & Benefits
Base Salary: $160,000 – $210,000 (San Francisco senior-level range)
Equity: Competitive equity package
Benefits: Medical, dental, vision coverage; flexible PTO; standard startup benefits
Work Model: Hybrid or remote-friendly depending on location and team needs
Equal Opportunity
This role is with an equal opportunity employer. Qualified applicants will be considered without regard to race, color, religion, gender, sexual orientation, gender identity, age, disability, or veteran status.
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