Staff Engineer, Product UI Platform
Company: Together AI
Location: San Francisco
Posted on: April 1, 2026
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Job Description:
About the Role Together AI is seeking a highly experienced Staff
Engineer to join the Product Engineering team, to own and evolve
the Product UI Platform — the architectural foundation that powers
how product teams build full-stack features across our web
surface.This role is responsible for evolving the product runtime
from its current monolithic growth architecture to a scalable,
modular, and high-leverage platform that supports increasing scale,
reliability requirements, and a growing number of feature
engineers. You will define and drive the technical direction of the
Next.js/typescript/nodejs web runtime, BFF layer, and application
integration patterns, partnering peer-to-peer with Backend and API
Platform leaders to ensure cohesive architectural evolution across
layers. This is a deeply hands-on role for and experienced engineer
with real life experience leading and implementing architectural
evolution and is ready to take full ownership of a critical
technical domain. Responsibilities Lead the next phase of
architectural evolution for the product application platform Design
and implement foundational platform primitives used across product
teams Reduce architectural entropy and duplication across the web
surface Improve application-level performance and reliability
metrics Drive incremental modularization without disrupting feature
velocity Establish performance budgets and enforce
application-layer guardrails Partner with Backend Platform to shape
API ergonomics and integration boundaries Collaborate with SRE to
ensure runtime stability and production readiness Write and
maintain critical-path platform code Establish durable standards
for how full-stack features are built Mentor engineers and help
scale the platform capability over time Requirements 8 years
building production-grade web applications and backend systems
Demonstrated ownership of a product application platform used by
multiple teams Deep expertise in React/Next.js/TypeScript and
server-side application architecture Strong backend experience with
TypeScript Experience evolving monolith architectures into modular
systems Web Vitals performance optimization experience across
browser ? API ? data layers Proven ability to drive and implement
architectural change in a cross functional collaborative
environment Experience establishing technical standards and scaling
developer velocity History of owning complex technical decisions
and their outcomes About Together AI Together AI is a
research-driven artificial intelligence company. We believe open
and transparent AI systems will drive innovation and create the
best outcomes for society, and together we are on a mission to
significantly lower the cost of modern AI systems by co-designing
software, hardware, algorithms, and models. We have contributed to
leading open-source research, models, and datasets to advance the
frontier of AI, and our team has been behind technological
advancement such as FlashAttention, Hyena, FlexGen, and RedPajama.
We invite you to join a passionate group of researchers in our
journey in building the next generation AI infrastructure.
Compensation We offer competitive compensation, startup equity,
health insurance and other competitive benefits. The US base salary
range for this full-time position is: $200,000 - $275,000 equity
benefits. Our salary ranges are determined by location, level and
role. Individual compensation will be determined by experience,
skills, and job-related knowledge. Equal Opportunity Together AI is
an Equal Opportunity Employer and is proud to offer equal
employment opportunity to everyone regardless of race, color,
ancestry, religion, sex, national origin, sexual orientation, age,
citizenship, marital status, disability, gender identity, veteran
status, and more. Please see our privacy policy at
https://www.together.ai/privacy
Keywords: Together AI, Manteca , Staff Engineer, Product UI Platform, IT / Software / Systems , San Francisco, California
