Senior Full Stack Engineer
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Before you apply
Salary$180k – $225k
LocationSan Jose, CA
Work modeon-site
Typefull-time
SenioritySenior
Experience5+ yrs
DepartmentEngineering
Company size6+ people
First seenOct 16, 2026 · 2w ago
Verified live1d ago
At a glanceSummarised by Seekless from the posting.
5+ years of experience with a Bachelor's and/or Master's degree building Full Stack applications
Strong skills in Frontend: React (modern stack)
Strong skills in Backend: Python (FastAPI or similar) or Node.js
Experience designing and working with APIs
Comfortable with data models, async workflows, and scalable systems
Ability to operate independently and move fast with high ownership
Strong communication and collaboration skills
Experience working in startup environments
Comfortable leveraging AI coding tools and agents to move faster
Experience with cloud platforms, developer tools, or compute systems
Familiarity with Kubernetes, CI/CD, and observability
Exposure to billing, licensing, or marketplace systems
Skills
React
Python
FastAPI
Node.js
Kubernetes
CI/CD
Role Overview
FlexAI is looking for a Senior Full Stack Engineer who can build end-to-end features across our PaaS platform — including frontend UI layers, backend APIs, data models, and integrations with compute and infrastructure systems. You will work on developer modules Admin modules, Marketplace, and Licensing, shaping the user experience and backend logic.
This position is In-Person and located at our San Jose, CA Office.
What You’ll Do
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Build and ship end-to-end features across our platform (developer tools, marketplace, billing, admin)
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Develop high-performance UIs using React
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Design and implement APIs and backend services using Python (FastAPI) and/or Node.js
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Define clean, scalable contracts between frontend and backend
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Work on data-intensive workflows (jobs, compute orchestration, resource management)
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Collaborate with platform and infrastructure teams to build reliable systems
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Debug and optimize across the stack — from UI to backend performance
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Own features end-to-end: design, build, ship, and operate
What You’ll Need to Be Successful
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5+ years of experience with a Bachelor’s and/or Master’s degree building Full Stack applications
•
Strong skills in:
•
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Frontend: React (modern stack)
•
Backend: Python (FastAPI or similar) or Node.js
•
Experience designing and working with APIs
•
Comfortable with data models, async workflows, and scalable systems
•
Ability to operate independently and move fast with high ownership
•
Strong communication and collaboration skills
•
Experience working in startup environments
•
Comfortable leveraging AI coding tools and agents to move faster
Nice to Have
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Experience with cloud platforms, developer tools, or compute systems
•
Familiarity with Kubernetes, CI/CD, and observability
•
Exposure to billing, licensing, or marketplace systems
What We Offer
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A competitive salary and benefits package
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Work on cutting-edge AI infrastructure
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Build products used by developers and enterprises
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High ownership, fast execution, real impact
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Collaborative, high-caliber team
About the company
About FlexAI
Build and Deploy AI the right way, anywhere.
The FlexAI Compute Infrastructure Platform provides an “end-to-end AI compute layer” for running and managing workloads across any cloud, any GPU, and any deployment model (public, hybrid, or on-prem). It brings together “1-click simplicity” for users with “enterprise-grade orchestration, security, and automation” under the hood.
Founded by Brijesh Tripathi, who bring experience from Nvidia, Apple, Tesla, Intel and Zoox, FlexAI is not just building a product – we’re shaping the future of AI. Our teams are strategically distributed across Silicon Valley and Bengaluru, united by a shared mission: to deliver more compute with less complexity.
If you’re passionate about shaping the future of artificial intelligence, driving innovation, and contributing to a sustainable and inclusive AI ecosystem, FlexAI is the place for you !