Genuine full-stack range with a frontend-leaning profile, including strong TypeScript and React skills and practical API and backend experience.
Experience integrating AI/large language models in production, building agent-facing features, preferably with evaluation harnesses or quality feedback loops.
Staff-level engineering judgment, including design-system fluency and client-server and user-interface performance judgment.
Track record of end-to-end ownership, driving ambiguous problems from the initial idea through launch.
Strong problem-solving skills and attention to detail.
Ability to work cross-functionally and communicate effectively.
Willingness to work hard, move quickly, and grow in a rapidly changing environment.
A humble, team-first attitude and willingness to contribute to team success.
Responsibilities
Ship at least three pull requests on the first day.
Drive full-stack feature development from conception to deployment, owning key product initiatives end-to-end.
Collaborate on the design and implementation of user-facing features that improve the experience.
Build robust, performant web applications using modern frontend and backend technologies.
Identify opportunities to optimize and enhance existing systems.
Contribute to architectural decisions that shape the product.
Set the industry standard for the user experience of agent products.
Build AI and large language model integrations as a core part of the product, including agent-facing user experiences rather than only prompting.
Desired Qualifications
Background in coding agents or multi-agent systems.
Informed opinions on agent orchestration.
Contributions to open-source projects or developer tools.
Previous experience at a high-growth startup.
Full-Stack Product Engineer
About Obvious
We’re building an AI‑native workspace—an operating system for work that puts co‑intelligence at the center. Start with data or an idea, describe your goal, and Obvious goes to work: running analysis, searching the web, writing documents, generating tables, designing presentations, visualizing data, building dashboards, and more.
As Steve Jobs imagined the personal computer as a bicycle for the mind, Obvious imagines AI as a garden for the mind. Less mechanical acceleration. More organic cultivation.
What if, instead of just vibe coding, you could vibe‑work? What if getting from idea to done wasn’t so opaque, stubborn, and high‑latency?
What if there was a way to consistently deliver work that feels like it came from the best version of you on your best day?
That’s Obvious.
Why we're hiring for this role
While we've made significant progress with our AI features like search, data enrichment, modes, artifact generation, coding, and more, we're just scratching the surface of what's possible.
We need engineers who can bridge the gap between powerful AI models and production-ready experiences that solve real user problems.
This isn't just about writing prompts – it's about building resilient systems that can handle the unique challenges of working with AI at scale and can solve some of the industry's most interesting problems like memory, agent-to-agent collaboration, non-deterministic repeatability, and more.
We are small and talent-dense. Among our founding team, we have world-class builders, former founders, and leaders from companies like Netflix, Google, Uber, Meta, Dropbox, Instacart, Shopify, Apple, Datadog and Twitter (X). If you're excited to solve some of the world's most challenging problems and build Al that can deliver on real-world objectives, join us.
About Obvious
We're building an AI-native workspace—an operating system for work that puts co-intelligence at the center. Start with data or an idea, describe your goal, and Obvious goes to work: running analysis, searching the web, writing documents, generating tables, designing presentations, visualizing data, building dashboards, and more.
As Steve Jobs imagined the personal computer as a bicycle for the mind, Obvious imagines AI as a garden for the mind. Less mechanical acceleration. More organic cultivation.
What if, instead of just vibe coding, you could vibe-work? What if getting from idea to done wasn't so opaque, stubborn, and high-latency?
What if there was a way to consistently deliver work that feels like it came from the best version of you on your best day?
That's Obvious.
Why we're hiring for this role
We've made real progress on the AI features that make Obvious work—search, data enrichment, modes, artifact generation, coding—and we're still only scratching the surface of what's possible.
This is a generalist product engineering seat, firmly in the application space. We're looking for someone who translates customer problems into the most elegant, cost-efficient solution—not someone chasing flashy tech for its own sake. That means bridging the gap between powerful AI models and production-ready experiences that solve real user problems. This isn't about writing prompts. It's about building agent-facing UX and the resilient systems behind it: memory, agent-to-agent collaboration, non-deterministic repeatability.
We are small and talent-dense. Among our founding team, we have world-class builders, former founders, and leaders from companies like Netflix, Google, Uber, Meta, Dropbox, Instacart, Shopify, Apple, Datadog, and Twitter (X). If you're excited to solve some of the industry's hardest problems and build AI that delivers on real-world objectives, join us.
In this role you will:
Ship at least 3 PRs on your first day
Drive full-stack feature development from conception to deployment, owning key product initiatives end-to-end
Collaborate on the design and implementation of user-facing features that improve the experience
Build robust, performant web applications using modern frontend and backend technologies
Identify opportunities for optimization and enhancement in existing systems
Contribute to the architectural decisions that shape the product
Set the industry standard for the UX of agent products
Build AI/LLM integrations as a core part of the product, not a bolt-on—agent-facing UX, not just prompting
You will thrive in this role if you have:
Genuine full-stack range, frontend-leaning: strong TypeScript/React paired with real API and backend chops—not a single narrow lane
AI/LLM integration experience you can point to, not just talk about—production work building agent-facing features, ideally with the eval harnesses or quality feedback loops behind them
An engineering bar we hold at staff level regardless of how you're titled—we'll ask about design-system fluency and client-server/UI performance judgment, not just ship velocity
A track record of end-to-end ownership—driving ambiguous problems from first idea to shipped, not executing a spec handed down
Strong problem-solving skills and attention to detail
Excellent communication skills and the ability to work cross-functionally
Willingness to work hard, move fast, and grow quickly in a rapidly changing environment
A humble, team-first attitude and a desire to do whatever it takes to make the team succeed
Nice to have:
Background in coding agents or multi-agent systems
Informed opinions on agent orchestration
Contributions to open-source projects or developer tools
Previous experience at a high-growth startup
This role may not be a fit if:
You need fully-specced requirements to operate—at our size, you'll define scope as often as you're handed it
You see frontend and backend as separate lanes rather than one job
Lemma joins LlamaIndex, TinyFish, Linq, and Obvious to cohost SF Tech Week's largest event: The Agent Economy Gala.
September 24, 2026 16:00 ET | Source: Lemma
San Francisco, California, Sept. 24, 2026 (GLOBE NEWSWIRE) - Lemma, a monitoring tool that helps engineering teams catch silent AI agent failures in production, announced it is co-hosting The Agent Economy Gala, a black-tie event during San Francisco Tech Week that brings together the founders, operators, and investors building the agent economy for one night in San Francisco. The gala will bring together companies working across the agent economy, from infrastructure and reliability to evals, interfaces, and distribution.
The gala runs October 9 from 7 to 10 p.m. at The Redwood Room, an Art Deco lounge inside San Francisco's Clift Hotel. A Gatsby theme dresses the room for the night, styled after the roaring twenties. Lemma joins LlamaIndex, TinyFish, Linq, and Obvious as co-hosts, with MongoDB as a sponsor. Attendees span the full agent stack, including application, reliability, agent commerce, infrastructure, and orchestration and tooling companies that have raised between $2 million and more than $60 million.
"The agent economy still runs on trust nobody has verified yet," said Sarah Fan, host and Creative Director for Lemma. "Every company co-hosting this gala is trying to close that gap in its own corner of the stack, from the infrastructure agents run on to the fixes that keep them working once they ship. Getting all of us in one room for a night, dressed up and off our laptops, felt like the right way to mark how far this category has come."
Lemma monitors live production traffic to catch the agent failures that dashboards miss, then traces each one to its root cause and pushes a proposed fix back into the codebase. As AI agents take on more work in healthcare, finance, and legal review, an unnoticed failure can cost a business real trust and real customers. The gala gives Lemma an opportunity to connect with engineering leaders and investors working on reliability and other challenges across the agent economy.
Sarah Fan, Kamila Zak and Ilias Anwar are producing the event under Maison Noir, their San Francisco events collective, backed by a team with more than 600 events to its name. Capacity is limited to 200-300 guests.
Details and RSVP information are available on the event page.
About Lemma
Lemma is a production monitoring and observability platform for AI agents. Founded by Jerry Zhang and Cole Gawin, who met as freshmen in USC's startup incubator, Lemma helps engineering teams uncover hidden semantic failures, diagnose root causes across thousands of traces, and deploy automated fixes, enabling AI agents to continuously improve from real-world usage instead of silently degrading. To learn more or book a demo, visit www.uselemma.ai.