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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.
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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…
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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,…
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Mobile Test Engineer
SunCore Digital
Scottsdale, AZ · Bellevue, WA
- $135,000 to $155,000 USD / year
SunCore Digital is seeking a Mobile QA Engineer, Flutter to own hands-on testing of our Flutter-based mobile applications across supported Android and iOS devices.
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Dev/Sec/Ops and Threat Engineering Specialist
SunCore Digital
Scottsdale, AZ · Bellevue, WA
Conduct regular penetration testing across applications, APIs, cloud infrastructure, and mobile components
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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…
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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…
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Civil Engineer
Anastasia Talent Group
Brambleton, VA
Anastasia Talent Group is recruiting a Civil Engineer on behalf of a confidential real estate development organization in Brambleton, Virginia. This role oversees commercial, residential,…
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Bridge Section Head
Anastasia Talent Group
Lexington, KY
Anastasia Talent Group will review applications for alignment with the position’s requirements. Candidates whose qualifications align with the opportunity may be contacted regarding next…
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Associate Structural Engineer
Anastasia Talent Group
Boston, MA
Anastasia Talent Group is recruiting an Associate Structural Engineer on behalf of a confidential engineering consultancy in Boston. This opportunity is suited to an experienced structural…
Added 1 min ago
AI Full Stack Engineer (Volunteer)
Solution Community
Remote, United States
Volunteer AI Full Stack Engineer (AI-Native / Rapid Development)
Added 1 min ago
Neural Electrode or Interface Fabrication and Characterization Engineer
Cahira Technologies
Boston, MA
We're hiring an engineer with strong background in designing, nano-fabricating and characterizing electrode/interface for neural electrical stimulation. Expertise in micro/nano-fabrication…
Added 1 min 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 min ago
Micro-Nano Fabrication Engineer
Cahira Technologies
Boston, MA
We're hiring a micro/nano-electronic device engineer with strong background in electronic device physics and expertise in micro-nano fabrication skills. You will be involved in developing…
Added 1 min ago
AI/Machine Learning Engineer, Neuro-AI
Cahira Technologies
Boston, MA
Are you an exceptional AI/ML Engineer with a passion for transforming human capabilities and treating neurological diseases? Join Cahira Technologies, a groundbreaking neurotech startup…
Added 1 min ago
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ML Engineer - Demand Geneneration / Research / Engineering
Deccan AI
Mountain View, CA
- $160,000 to $320,000 USD / year
We are looking for an ML Engineer – Demand Generation / Research / Engineering to build intelligent systems that leverage machine learning, data science, and AI to drive business growth and…
Added 1 min ago
Founding Engineer - Machine Learning
Deccan AI
Mountain View, CA
We’re looking for a Founding ML Engineer to build and scale core machine learning systems from the ground up. This is a hands-on role for someone who can move fast between experimentation…
Added 2 mins ago
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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 2 mins 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 2 mins ago
Sr. SDE, AWS Agentic WorkSpaces - Forefront (Agentic Harness)
Amazon.com Services LLC
Seattle, WA
…into our consoles and SDK. As a Senior Software Development Engineer you will be a key contributor to our agentic harness - the always-on platform layer that hosts our LLM agents: the agent…
Added 5 mins ago
Full Stack Software Engineer ($8,500) - Sarasota, FL
Jobs Xchange
Sarasota, FL
Are you a software engineer with a passion for developing web-connected applications and a strong foundation in programming? At Jobs Xchange, you'll have the opportunity to work on…
Added 5 mins ago
Full Stack Software Engineer ($5,000) - Chicago, IL
Jobs Xchange
Chicago, IL
We are seeking a talented and motivated Full Stack Software Engineer to join our innovative team in Chicago. This role is crucial in developing and maintaining our web applications,…
Added 5 mins ago
Senior Software Quality Engineer
Abbott Laboratories
Sylmar, CA
…assurance activities associated with cloud-based medical device applications and supporting infrastructure. This role ensures software systems are developed, verified, validated, and…
Added 6 mins ago
GL
Frontend Developer (Founding Team)
Gradientflo Labs
San Francisco, CA
- $32,000 to $40,000 USD / year
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…
Added 7 mins ago
LLM Engineer (Large Language Model Engineer)
Nestifytech Solutions Private Limited
Remote, United States
At NestifyTech Solutions, looking for a highly skilled LLM Engineer to develop, fine-tune, and integrate large language models (LLMs) into enterprise-grade applications. This role requires…

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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