Jobs in the United States

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Added 1 min ago
BS
Product Engineer
Bubble Sort Recruiting
San Francisco, CA
- $180,000 to $250,000 USD / year
We're seeking a Product Engineer to help us reshape how millions of loans are serviced through artificial intelligence. As a Product Engineer at AI Platform Company, you'll build and…
Added 1 min ago
CA
Product Marketer
Conduit AI
San Francisco, CA
- $150,000 to $200,000 USD / year
You do the work yourself, with AI tools, a GTM engineer and freelancers. You will not have a team on day one.
Added 2 mins ago
A
Support Systems Engineer - NAMER
Ashby
Remote, United States
- $100,000 to $130,000 USD / year
That’s why we’re searching for a Support Systems Engineer to become the long-term owner of our Support systems.
Added 2 mins ago
AI Software Engineer
Gaya
Remote, United States
We're looking for a software engineer to help build, maintain, and evolve the production services behind those systems. The work is varied by design: AI extraction pipelines, background job…
Added 3 mins ago
CA
General Engineer
Customs and Border Protection
Aliso Viejo, CA · Euless, TX
- $106,437 to $138,370 USD / year
B. Combination of education and experience: College-level education, training, and/or technical experience that furnished (1) a thorough knowledge of the physical and mathematical sciences…
Added 4 mins ago
MT
Site Reliability Engineer
Medina Talent Group
Irvine, CA
- $125,000 to $155,000 USD / year
As a Site Reliability Engineer, you will be immersed in a high-performing and frequently challenged team responsible for the reliability, scalability, and operational excellence of product…
Added 6 mins ago
SH
Founding Full-Stack Engineer (Backend-leaning)
Solstice Health
New York City, NY
- $150,000 to $275,000 USD / year
Frontiers of technology: We’re building applications and rapidly iterating technical approaches at the frontiers of AI, experimenting with LLMs and new frameworks. We have V2 of the…
Added 6 mins ago
SD
Senior Site Reliability Engineer (Disaster Recovery
SunCore Digital
Scottsdale, AZ · Bellevue, WA
- $145,000 to $200,000 USD / year
SunCore Digital is seeking a hands-on Senior Site Reliability Engineer (Disaster Recoveryr to assess, implement, test, and document service and data recovery capabilities.
Added 6 mins ago
SD
Senior Site Reliability Engineer
SunCore Digital
Remote, United States
- $145,000 to $185,000 USD / year
SunCore Digital is seeking a hands-on Senior Site Reliability Engineer to assess the current reliability and scalability of our systems, identify risks, and implement the technical changes…
Added 6 mins ago
SD
Senior Security Operations Engineer
SunCore Digital
Remote, United States
- $165,000 to $205,000 USD / year
SunCore Digital is seeking a hands-on Senior Security Operations Engineer to assess and improve the security of our applications, cloud environments, development practices, identities,…
Added 6 mins ago
Imaging Service Engineer 3
Anastasia Talent Group
Cleveland, OH
Anastasia Talent Group is recruiting an Imaging Service Engineer 3 on behalf of a confidential organization supporting healthcare technology operations in Cleveland, Ohio. This role…
Added 6 mins ago
TS
Principal/Staff HPC Network Engineer
The San Francisco Compute Company
San Francisco, CA
- $250,000 to $325,000 USD / year
…fast. To do that, we serve financially motivated parties as a technical partner to build, operate, & lease supercomputers on their behalf. Basically, we help folks who want an economic…
Added 6 mins ago
Assoc. Electrical Engineer
Tech Search Pros
CA · Los Angeles, CA
As an Associate Electrical Engineer, you will have the opportunity to apply your technical knowledge of building services systems across a portfolio of ground-breaking projects in the US…
Added 6 mins ago
AI Full Stack Engineer (Volunteer)
Solution Community
Remote, United States
Volunteer AI Full Stack Engineer (AI-Native / Rapid Development)
Added 8 mins ago
Sr. SDE, AWS Agentic WorkSpaces - Forefront (Agentic Harness)
Amazon.com Services LLC
Seattle, WA
…streaming - and contribute significantly to its multi-quarter technical roadmap. -Help define the platform contracts (MCP tool interfaces identity pass-through agent-to-service seams) that…
Added 12 mins ago
GL
Frontend Developer (Founding Team)
Gradientflo Labs
San Francisco, CA
- $32,000 to $40,000 USD / year
…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…
Added 12 mins ago
GL
Chief Technology Officer (Tech - Founding Pillar)
Gradientflo Labs
San Francisco, CA
- $40,000 to $60,000 USD / year
…that floats above the codebase - this is a hands-on, deeply technical position where you’ll set the vision and lead the execution of our multi-agent, AI-first, serverless…
Added 13 mins ago
TH
Project Geotechnical Engineer Location: Milwaukee or Madison, WI
Travel Hire LLC
Milwaukee, WI · Madison, WI
- $60,000 to $130,000 USD / year
The Client is a full-service geotechnical engineering firm with offices in Milwaukee and Madison, Wisconsin. We are seeking a Project Engineer with strong technical skills to join our team.…
Added 13 mins ago
Support Engineer Internship
Metasys
Remote, United States
The Support Engineer / Customer Success role is the primary technical interface for our users. You'll provide timely, expert technical support to both our e-commerce customers and internal…
Added 13 mins ago
Frontend Engineer Internship
Metasys
Remote, United States
The Frontend Engineer is essential for bringing our supply chain e-commerce vision to life by building high-performance, responsive, and accessible user interfaces. You will be responsible…
Added 13 mins ago
Backend Engineer Internship
Metasys
Remote, United States
The Backend Engineer is a hands-on role responsible for the development, scaling, and maintenance of the core API services that power our entire integrated platform. You will build highly…
Added 13 mins ago
Automation QA Engineer Internship
Metasys
Remote, United States
The Automation QA Engineer is vital for ensuring the reliability, performance, and correctness of our entire supply chain e-commerce platform. You will be responsible for designing,…
Added 14 mins ago
DevSecOps AWS (EKS) Lead Engineer
Comspark group
Phoenix, AZ
We are seeking an experienced DevSecOps AWS ( EKS) Lead Engineer to join our team at Capgemini. This role focuses on CI/CD of applications including Kubernetes-based container orchestration…
Added 15 mins ago
Staff Cryptographer
Prospex CRM
United States
…platform from the inside. This is not a generic blockchain engineer who applies primitives. This is a practicing cryptographer who designs them, reviews them, and ships…
Added 15 mins ago
Head of Engineering - Custody
Prospex CRM
United States
The Head of Engineering is the operational leader of that function. You will partner closely with the CTO, who owns technical strategy and architectural direction for the custody platform.…

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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