Senior · Staff · Principal Fullstack Engineer
- Level
- Principal
- Work type
- Hybrid · San Francisco
Not stated in the posting: salary, visa.
Open. First seen 3 October 2026.
About the role
Senior / Staff / Principal Fullstack Engineer
Location: Onsite San Francisco (5 days onsite AND hybrid options)
We have multiple startups interested in talent. Here is a generic summary. Instead of a perfect job description, we present talented individuals to companies and allow them to share how that talent fits in the organization.
Key Responsibilities:
- Developing and maintaining both front-end and back-end components:
This includes writing code in various programming languages, designing user interfaces, and creating server-side logic.
- Collaborating with cross-functional teams:
Working with product managers, designers, and other engineers to define requirements, design features, and ship new products.
- Ensuring the technical feasibility of UI/UX designs:
Understanding how to implement designs effectively and ensure they perform well.
- Writing clean, maintainable, and efficient code:
Following coding standards and best practices to create code that is easy to understand, debug, and modify.
- Optimizing applications for speed and scalability:
Tuning code and infrastructure to ensure the application can handle a large volume of traffic and perform well.
- Troubleshooting, debugging, and upgrading existing software:
Identifying and resolving issues in existing software and ensuring it is kept up-to-date with the latest technologies.
- Implementing secure coding practices:
Protecting data and ensuring the application is resistant to vulnerabilities.
- Participating in code reviews:
Providing constructive feedback on the code of other developers and ensuring code quality.
- Creating and maintaining software documentation:
Documenting the application's architecture, code, and usage for future reference.
- Managing hosting environments:
Setting up and maintaining the infrastructure on which the application runs, including database administration and scaling.
Required Skills:
- Proficiency in front-end technologies: HTML, CSS, JavaScript, and popular frameworks like React, Angular, or Vue.js.
- Proficiency in back-end technologies: Server-side languages like Node.js, Python, Ruby, or Java, and database technologies like MySQL, PostgreSQL, MongoDB, or Redis.
- Understanding of RESTful APIs and web services: Knowledge of how to design and implement APIs for communication between different systems.
- Experience with version control systems: Git.
- Experience with CI/CD pipelines and automated testing frameworks: Understanding how to automate the software development lifecycle.
- Problem-solving and critical thinking skills: The ability to analyze complex problems and develop effective solutions.
- Communication and collaboration skills: The ability to effectively communicate with cross-functional teams and work together to achieve shared goals.
Compensation: Market range and can include equity – details can be provided after the specific client is determined.
What this role asks for
Particular to this role
Java · MongoDB · MySQL · Node.js · Redis · Ruby · Test Automation
Rare in Lead Allies's other 8 open postings.
Standard for full stack roles
CI/CD · JavaScript · PostgreSQL · Python · REST · React
Common in full stack postings at any company.
Compared with Lead Allies's other open jobs.
The team: Engineering
This role is one of 9 open in Engineering.
WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS
Angular (4 of 9), CSS (4 of 9), Git (4 of 9), HTML (4 of 9), JavaScript (4 of 9), Python (4 of 9), React (4 of 9)
OTHER ROLES ON THIS TEAM
- Senior · Staff · Principal Fullstack Engineer posted Aug 4
- Senior · Staff · Principal Machine Learning Engineer posted Jul 23
- Product Engineer posted Jun 18
- Senior · Staff · Principal Machine Learning Engineer posted Jun 18
- Senior · Staff · Principal Frontend Engineer posted May 21
- Senior · Staff · Principal Backend Engineer posted May 21
- Senior · Staff · Principal Frontend Engineer posted May 12
- Senior · Staff · Principal Backend Engineer posted May 8
From the team and dates on Lead Allies's own job board.
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