Jobs in the United States

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Added 5 mins ago
Pre-Silicon Signoff Lead - 19498
Synopsys
Sunnyvale, CA
You are a seasoned engineer with deep expertise in high-speed serial communication and transceiver design, blending theoretical rigor with hands-on laboratory proficiency. You thrive in…
Added 5 mins ago
Silicon Validation Lead, Principal Engineer - 19499
Synopsys
Sunnyvale, CA
You are an accomplished engineer with deep expertise in silicon validation and high-speed serial communication systems. You thrive in bridging simulation and silicon realities, ensuring…
Added 5 mins ago
Solutions Engineering Architect - 19495
Synopsys
Sunnyvale, CA
…AI-powered products. We deliver industry-leading silicon design, IP, simulation and analysis solutions, and design services. We partner closely with our customers across a wide range of…
Added 9 mins ago
Senior Flight Test Engineer - Mission Autonomy (UAS - Fury)
Anduril Industries
Costa Mesa, CA
…autonomy systems. As we expand, we're seeking a methodical engineer who is prepared to tackle the challenges of mission autonomy testing and contribute to the iterative development and…
Added 9 mins ago
Flight Test Engineer - Mission Autonomy (UAS - Fury)
Anduril Industries
Costa Mesa, CA
…autonomy systems. As we expand, we're seeking a methodical engineer who is prepared to tackle the challenges of mission autonomy testing and contribute to the iterative development and…
Added 9 mins ago
Flight Test Engineer - Mission Autonomy
Anduril Industries
Costa Mesa, CA
…autonomy systems. As we expand, we're seeking a methodical engineer who is prepared to tackle the challenges of mission autonomy testing and contribute to the iterative development and…
Added 20 mins ago
Design Engineer II
Silicon Laboratories Inc.
United States
As a Digital Design Engineer II you will develop world class, highly integrated, low power, System on a Chip devices to serve the IoT wireless market.
Added 32 mins ago
ML
Nuclear Scientist and Engineer
Mersenne Labs
Washington, DC
- $80,000 to $500,000 USD / year
As a Nuclear Scientist and Engineer, you will play a significant role in developing and implementing plans and strategy for a revolutionary energy startup.
Added 35 mins ago
IT/OT Engineer
Stellix
Foxborough, MA
We are currently looking for a IT/OT Engineer III position within our IT/OT managed services team to provide post-project services (such as DCS Platform, OT infrastructure, virtualization,…
Added 50 mins ago
Senior AI Engineer
Heart of the Dawn Games
Los Angeles, CA
We are looking for an experienced AI Engineer to join our early stage team. In this role you will build systems and features that support a rich open world in Unreal Engine 5. We are…
Added 51 mins ago
Process Engineer - Associate
syncreonAmerica
CARLISLE, PA
…distance that provides flexibility for expansion, and utilize simulation software to analyze and/or improve work…
Added 51 mins ago
SE
Energetics Process Engineer
Supply Energetics
Parsons, KS
- $145,000 to $170,000 USD / year
We’re hiring an Energetics Process Engineer at our Prairie Forge production facility in Parsons, KS to manage industrial process and equipment for our overall physical operations. The role…
Added 57 mins ago
Researcher/Engineer - Low-Latency Networking
Mibura Inc.
Remote, United States
We are looking for a highly motivated and talented researcher/engineer to investigate novel approaches for achieving ultra-low latency in next-generation networks. In this role, you will…
Added 59 mins ago
Senior Mechanical Engineer
Anastasia Talent Group
Houston, TX
Anastasia Talent Group is recruiting a Senior Mechanical Engineer on behalf of a confidential organization in Houston, Texas. This role leads the design, development, and improvement of mud…
Added 59 mins ago
Nanoelectronics Device Engineer
Cahira Technologies
Boston, MA
We're hiring a micro/nano-electronic device engineer with strong background in electronic device physics, semiconductor engineering and CMOS technology. You will be involved in developing…
Added 1 hour ago
Software Engineer, Robotics
Deccan AI
San Francisco, CA
Software Engineer, Robotics & VLA Systems Mountain View, CA · Full-Time · Physical AI Team
Added 1 hour ago
DA
ML Engineer - Robotics
Deccan AI
Mountain View, CA
- $160,000 to $320,000 USD / year
We’re looking for an ML Engineer – Robotics to design, train, and deploy intelligent models that power autonomous systems. You’ll work at the intersection of machine learning, control…
Added 1 hour ago
Software Engineer, Geometry/Simulation (C++)
Fabri
Billerica, MA
We are looking for a Software Engineer, Geometry & Simulation to build the software systems that connect Fabri's digital manufacturing process end-to-end.
Added 1 hour ago
F
Software Engineer, Generalist (C++/Python)
Fabri
Billerica, MA · Boston, MA
- $140,000 to $180,000 USD / year
We are looking for a Software Engineer, Generalist to build the software systems that connect Fabri’s digital manufacturing process end-to-end.
Added 1 hour ago
Senior Mechanical Engineer
Fabri
Billerica, MA
Fabri is seeking a Senior Mechanical Engineer to architect, design, and deliver the in-house equipment and infrastructure that defines our manufacturing processes. This is a foundational…
Added 1 hour ago
F
Senior Foundry Engineer
Fabri
Boston, MA · Billerica, MA
- $115,000 to $140,000 USD / year
Fabri is seeking a Senior Foundry Engineer to build and own the process development of high-performance superalloy castings for demanding aerospace and space-industry applications. This…
Added 1 hour ago
Principal Systems Engineer
Fabri
Boston, MA
Fabri is seeking a Principal Systems Engineer to architect, design, and deliver the in-house equipment and infrastructure that defines our manufacturing processes. This is a foundational…
Added 1 hour ago
Metallurgical Process Engineer
Fabri
Billerica, MA · Boston, MA
Fabri is seeking a Metallurgical Process Engineer to build and own the solidification science behind high-performance investment castings for demanding aerospace and space-industry…
Added 1 hour ago
Software Engineer, XR Developer
Aether
Remote, United States
…roofing, and heat pump companies to deliver advanced 3D modeling, simulation, quoting, and financing tools - all in one powerful interface. We combine deep technical rigor with real-world…
Added 1 hour ago
Software Engineer, Three.js
Aether
Remote, United States
…roofing, and heat pump companies to deliver advanced 3D modeling, simulation, quoting, and financing tools - all in one powerful interface. We combine deep technical rigor with real-world…

Gradientflo Labs

Frontend Developer (Founding Team)

San Francisco, CA, United States

$32,000 to $40,000 USD / year

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Job details

Pay: $32,000 to $40,000 USD / year
Posting language: English

Original job description

You will own the front-end architecture for Gradientflo’s core web applications. This is not a role for someone who just "makes things look good." We need an engineer who understands the React reconciliation process, cares deeply about Core Web Vitals, and writes self-documenting code. You have roughly 3 years of experience. You have moved past "making it work" and now focus on "making it scale." You will be working with server-side rendering, complex global state, and SEO critical implementations. We value clear writing, clean architecture, and strong debugging skills above all else. Core Responsibilities

Architect high-performance pages using Next.js (App Router).
Manage complex application state using Redux Toolkit (RTK).
Audit and optimize application performance (LCP, CLS, FID) using React Profiler and Lighthouse.
Refactor legacy components into reusable, strict SOLID compliant UI patterns.
Design custom hooks that abstract logic cleanly without causing "dependency hell."
Implement SEO best practices (Structured Data, Dynamic Metadata, sitemaps).
Debug complex race conditions and rendering issues using Chrome DevTools.
Write strict TypeScript to eliminate runtime errors.
Conduct code reviews focusing on performance impacts and maintainability.

Technical Requirements Must-Have Skills

React.js & Next.js (3+ years experience)
Redux Toolkit (Slices, Thunks, Selectors)
Performance Optimization (Memoization, Lazy Loading, Code Splitting)
TypeScript (Generics, Utility Types)
Deep understanding of React Hooks (useCallback, useMemo, useReducer)
Strong Debugging skills (knowing why a component re-rendered)
SEO Expertise (Next-SEO, JSON-LD, Open Graph tags)

Strong Pluses

Experience with Headless CMS integration
Experience writing unit tests (Jest / React Testing Library)
Knowledge of Web Accessibility (WCAG)

Technical Task (Mandatory Assessment) Project: Real-Time Asset Tracker (Simulated) Objective: Build a widget that tracks asset prices via simulated polling. This task is designed to expose how you handle complex effect dependencies, stale closures, and memory leaks when a component unmounts. Data Source Note: Do not use a real external API. You must use Static JSON Data stored locally (e.g., data.json) and simulate network latency/random price fluctuations using setTimeout. Functional Requirements

The "High-Dependency" Hook (useAssetTracker) You must implement a custom hook that manages data polling. It must accept all of the following dependencies in its arguments:

assetID (string, e.g., "BTC")
currency (string, e.g., "USD")
pollInterval (number, e.g., 3000ms)
alertThreshold (number, user-defined price alert)
isAutoRefreshEnabled (boolean)
userTier (string, affects polling speed)
onAlertTriggered (function, callback to parent)

The Logic Challenge:

Simulation: The hook should "fetch" data from your static JSON, adding a random delay (500ms to 1500ms) to simulate a network request.
Polling: When isAutoRefreshEnabled is true, fetch new data every pollInterval.
The Trap: If the user types in the alertThreshold input (updating the dependency), it must not reset the polling timer.
The Constraint: You are forbidden from using eslint-disable-next-line react-hooks/exhaustive-deps. You must solve the dependency array stability using useRef or split effects.

Mandatory Lifecycle Cleanup

Your implementation must handle the "Unmount" event gracefully:

Async Cancellation: Since you are using setTimeout to simulate an API, you must ensure that if the component unmounts while the timeout is pending, the state update is cancelled.
Timer Cleanup: clearInterval must be called immediately if assetID changes or the component unmounts.
Proof: Add a console.log('Cleaning up resource for:', assetID) in the return statement of your effect.

Redux Toolkit & State

Store the fetched price history in a Redux Slice.
Use a Memoized Selector to calculate the "High/Low" of the session.
Performance: Ensure that updating the price history only re-renders the Chart/Price component, not the entire Page Layout.

SEO Implementation

Create a dynamic route: /market/[assetID].
Inject dynamic Metadata (Title/Description) based on the assetID.
The page must be indexable by bots (Use Server Components for the shell, Client Components for the tracker).

Clean Code Requirements Mandatory rules:

No useEffect for derived state (use useMemo).
Strict SOLID alignment (Single Responsibility components).
No any types in TypeScript.
Proper separation of container logic vs. presentational components.

Submission Requirements

GitHub Public Repository

Your repo must include:

README explaining how you solved the "Timer Reset" issue when the alertThreshold changed.
Architecture Diagram: A simple diagram showing how data flows from your Static JSON -> Hook -> Redux -> UI.
Local run instructions.

Pull Requests to Raise (The "3-PR Rule")

You must create 3 distinct PRs to simulate a real workflow:

PR 1: Project Setup
Next.js scaffold, TypeScript config, Redux Store setup, Static JSON file creation.
PR 2: The Core Logic
The useAssetTracker hook with all 7 dependencies.
The "Simulated API" service layer.
Redux Slices.
PR 3: Performance
UI Polish.
React.memo optimizations.

Loom Video (Mandatory)

Record a 5 to 10 minute Loom video covering:

The Cleanup Demo:
Open Chrome DevTools Console.
Start the tracker.
Navigate away from the page while it is waiting for the "simulated" data.
Show that your cleanup log appeared and no React warnings (e.g., "update on unmounted component") occurred.
Code Walkthrough: Explain how you used useRef (or your chosen method) to handle the alertThreshold dependency without breaking the linter rules.
SEO Check: Inspect the page source to show the generated Metadata tags.

Evaluation Criteria

The Dependency Array: Did you list all 7 dependencies? (Omitting one is a fail).
Stability: Does changing the Alert Threshold cause the timer to jitter/reset? (It shouldn't).
Cleanup: Is the setTimeout or setInterval actually cleared on unmount?
Code Clarity: Is the code clean, readable, and formatted?
SEO: Is the metadata correctly generated server-side?
Process: Did you follow the 3-PR structure?

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