Freelance Quantum EngineersFreelance Quantum Engineers
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Anurag Nagare's avatar
Anurag Nagare
Mumbai, India
I’m an AI & Machine Learning engineer with expertise in deve
I’m an AI & Machine Learning engineer with expertise in deve
Cover image for CryptoHorizon an interactive app that
CryptoHorizon an interactive app that makes the quantum threat to encryption real instead of theoretical: a live Shor's-algorithm demo, a classical-vs-post-quantum crypto benchmark, a personal "harvest now, decrypt later" risk calculator, and a sourced Q-Day timeline, all in one dashboard. Defining feature is honesty by design: every number on screen is computed live at request time, never hardcoded RSA-2048 and ECC P-256 keys get generated, benchmarked, and compared against NIST's ML-KEM and ML-DSA in real time, and the quantum demo runs an actual Qiskit circuit against small, pre-validated semiprimes rather than a lookup table dressed up as a result. Only one thing is allowed to leak into the UI's language: a rule baked in from commit one that nothing may imply real-world RSA is broken or claim quantum advantage. Under the hood, Shor's algorithm runs for real superposition over a counting register, controlled modular exponentiation, inverse QFT, continued-fraction extraction, then a classical gcd step to pull out the factors on a FastAPI backend with no shortcuts. The risk calculator checks your required confidentiality window against five independently sourced Q-Day estimates from NIST, Google, and the Global Risk Institute, so "safe until 2035" is a real, cited comparison, not a guess. medium.com/@anuragnagare77/cryptohorizon-i-built-a-quantum-computer-that-factors-91-and-thats-the-whole-point-2c156a00d0da
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Cover image for One Gate: Voice-controlled Gmail, Calendar,
One Gate: Voice-controlled Gmail, Calendar, and Drive that can't fire the wrong thing Every "AI agent" demo shows a voice command turning into a sent email like magic, but almost nobody shows the part that actually matters: what stops it from sending the wrong thing. I built proof: an agent that runs your Gmail, Calendar, Contacts, and Drive by voice reply to a thread, schedule a meeting, archive an email, find a file hands-free end to end, but never fires anything irreversible without you saying so. The honest hard part isn't getting an LLM to sound smart, it's this: a transcript goes to LLM against a strict JSON schema and comes back as an ordered plan, every step tagged reversible or not and exactly one thing in the whole system is allowed to check that flag. Finding a thread, drafting a reply, creating a calendar event: those just run. The result covers real ground without ever feeling like it's guessing: forward or reply to email with the original quoted underneath, archive/label/trash, resolve a name to a real address through your Contacts first and your mail history as fallback, schedule an event that creates quietly and only emails the invite after a second confirmation, answer "what did John say" or "what's on my calendar Thursday" grounded in content actually fetched from your account not hallucinated. No backend, no server anywhere in the loop
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Cover image for What every "AI gesture control"
What every "AI gesture control" demo quietly leaves out Everyone films a hand waving at a screen and calls it AI. Almost nobody shows what's underneath that there's usually no gesture model at all. A "grab" is one distance crossing a line. Here's proof. I built a jigsaw puzzle you solve with your bare hands no mouse, no controller, no gesture classifier, no training.
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Cover image for Everyone's building AR filters and
Everyone's building AR filters and calling it "computer vision magic." Almost nobody's asking what's actually happening underneath — that most of these effects are just clever masking, not detection. Here's proof. I built an invisibility cloak that runs entirely in the browser, no green screen, no chroma key, no model training. https://github.com/AnuragNagare/Ghost-frame
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Quantum Engineer(1)
Manoj Rana's avatar
Manoj Rana
Dadri, India
A Full Stack QA[6+ YOE] to perform End to End testing.
New to Contra
A Full Stack QA[6+ YOE] to perform End to End testing.
Cover image for ⚠️ When Quality Assurance Is
⚠️ When Quality Assurance Is Ignored, The Cost Can Be Huge Software quality is not just about finding bugs — it is about protecting business, customers, and reputation. Here are some real-world examples where software failures created massive impact: 🔴 1. Knight Capital Group (2012) — $440 Million Loss A software deployment issue caused automated trading systems to behave incorrectly. Within minutes, the company faced enormous financial losses. Lesson: ✅ Strong release validation ✅ Automated regression testing ✅ Production-like testing environments are critical for high-risk systems. 🔴 2. Healthcare.gov (http://Healthcare.gov) Launch (2013) — Poor User Experience & Performance Issues The initial launch faced severe performance problems, slow response times, and users were unable to complete registrations. Lesson: ✅ Performance testing under realistic user load ✅ Scalability testing ✅ End-to-end validation should happen before production launch. 🔴 3. Amazon S3 Outage (2017) — Major Service Disruption A maintenance mistake impacted AWS services and caused outages for many businesses relying on cloud infrastructure. Lesson: ✅ Proper change validation ✅ Automated checks ✅ Fail-safe deployment processes are essential for reliable systems. 🔴 4. Toyota Recall Software Issues Software-related issues in automotive systems highlighted the importance of rigorous validation and safety testing. Lesson: When software controls critical systems, quality engineering becomes a business necessity. 💡 A single missed defect can impact: ❌ Revenue ❌ Customer trust ❌ Brand reputation ❌ Business continuity This is why QA is not a final checkpoint. Quality should be built into every stage of software development. #QualityEngineering #QA #TestAutomation #PerformanceTesting #SDET #SoftwareTesting #DevOps #AutomationTesting
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Cover image for A good QA is not
A good QA is not someone who just validates Figma vs. UI. A good QA is someone who asks questions. Do we really need this? Why are we building it this way? Can we simplify it? Can we add this as well? Can we solve this in another way? What happens in this edge case? How will this impact the user? QA should not just find bugs after the feature is built. A strong QA challenges the requirements, thinks about the user, identifies gaps, and helps the team build a better product, not just a bug-free one. Testing is not just validation. Testing is questioning. 👏 #QualityAssurance #SoftwareTesting #QA #SoftwareQuality #Testing
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Cover image for 🚀 Need reliable test automation
🚀 Need reliable test automation for your web application? I recently set up a complete CI pipeline using Jenkins + Selenium + Java + TestNG + Maven, where Jenkins automatically: ✅ Pulls the latest automation code from Git ✅ Executes end-to-end test suites ✅ Generates detailed HTML reports ✅ Provides quick visibility into test results and failures I help businesses build and maintain: 🔹 UI Test Automation Frameworks 🔹 CI/CD Integration with Jenkins 🔹 Regression Test Automation 🔹 Performance Testing with JMeter & k6 🔹 Custom QA Automation Solutions If you're looking to reduce manual testing efforts and improve release confidence, let's connect. #QAAutomation #SDET #Selenium #Jenkins #TestAutomation #Java #TestNG #Maven #CI #SoftwareTesting #PerformanceTesting #WebAutomation
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Cover image for AI is helping humanity in
AI is helping humanity in incredible ways, but every innovation comes with a hidden environmental cost. This short film explores the balance between technological progress and sustainability—and asks whether AI can become part of the solution.
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Quantum Engineer(1)
Juliette Quinones's avatar
Juliette Quinones
Santo Domingo, Dominican Republic
Software | Full-Stack Development | Quantum Computing | UI/X
New to Contra
Software | Full-Stack Development | Quantum Computing | UI/X
Cover image for Engineered a real-time visualization interface
Engineered a real-time visualization interface for advanced quantum and nano-scale phenomena, focusing on dynamic matrix rendering for Landau Levels and electron orbital degeneracies. Architected optimized computational pipelines using WebGL and client-side rendering to process complex wave functions Ψ(x,y), locking a stable 60 FPS during multi-variable parameter manipulation. Designed custom telemetry control layouts, integrating high-density interactive components for precise tracking of field coupling, potential barriers, and particle mass. Implemented a premium, high-contrast design system utilizing an obsidian and liquid gold visual hierarchy, strict component alignment, and glassmorphic UI constraints. Integrated an advanced educational UX layer, embedding explicit telemetry descriptions and mathematical typography to translate complex nanoscale physical systems into intuitive interactive software. Optimized and deployed production-ready web infrastructure via automated pipelines, ensuring ultra-low latency execution and fluid cross-platform responsiveness.
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Cover image for -Engineered a centralized digital platform
-Engineered a centralized digital platform to present technical projects, research interests, and entrepreneurial initiatives in advanced engineering fields. -Developed a responsive web architecture for the effective communication of complex technological concepts and long-term innovation roadmaps. -Designed and implemented a professional digital identity integrating engineering, quantum technology, aerospace, energy, and artificial intelligence interests. -Created a scalable framework for documenting ongoing projects, technical competencies, and future research endeavors. -Optimized user experience and information architecture to support professional networking, collaboration, and technical outreach. -Deployed and managed the platform using modern web technologies and cloud hosting infrastructure.
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Cover image for -Engineered a responsive, research-grade quantum
-Engineered a responsive, research-grade quantum gas simulation suite using HTML5 Canvas (Vanilla JS) and Tailwind CSS, stabilizing frame rates at a consistent 60 FPS under heavy multi-module compute loads via a single requestAnimationFrame loop. -Overhauled a custom 3D mathematical projection matrix to eliminate geometric rendering artifacts, expanding visualization capacity to map macroscopic wavefunction topologies and density profiles in real-world spatial coordinates (x/y in 10⁻⁵ m, z in 10¹² m⁻³). -Implemented discrete kinetic state-tracking and multi-stop color interpolation algorithms to dynamically simulate critical quantum phase transitions, mapping live parameters directly onto an interactive phase boundary diagnostic chart. -Optimized event-handling and localized canvas redraws for complex quantum phenomena (including symmetric Abrikosov vortex lattices and lattice spin-swap animations) reducing interactive input latency to near-zero levels.
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Cover image for -Developed an interactive web-based planetary
-Developed an interactive web-based planetary simulation inspired by quantum computing and space exploration. -Built real-time visualization systems for planets, environments, and immersive space navigation. -Designed the platform using modern web technologies with a focus on performance and smooth user experience. -Integrated simulation and rendering concepts to create futuristic and educational space experiences. -Explored the intersection of quantum technology, astrophysics, and interactive web development.
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Quantum Engineer(1)
Christian Neureuter's avatar
Christian Neureuter
Lockport, USA
InSite Tech Solutions: Websites, Software & More
InSite Tech Solutions: Websites, Software & More
Cover image for QAOA Implementation for MAX-SAT Problems
QAOA Implementation for MAX-SAT Problems
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Cover image for Launch of InSite Tech Solutions
Launch of InSite Tech Solutions
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Cover image for PyCAT-Napari Bio-image Analysis Platform
PyCAT-Napari Bio-image Analysis Platform
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Cover image for Biophysics Lab Website and Branding
Biophysics Lab Website and Branding
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Quantum Engineer(1)
Purva Patel's avatar
Purva Patel
proRajkot, India
Concept to Growth with Design, Development & Marketing
5.0
Rating
58
Followers
Concept to Growth with Design, Development & Marketing
Cover image for Discover Prism: The Future of Transparent Quantum Devices
The "Prism" Translucent Quantum Device The Product: A pocket-sized, completely transparent glass-slab device with visible, shifting photonic circuits inside. Visual Style: Prismatic light refractions, studio caustics, architectural minimalism, and sharp white or silver UI overlays.
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Cover image for Explore Monolithic Sci-Fi Luxury with Mag-Lev Neural Core
The "Monolith" Mag-Lev Modular Neural Core The Product: A high-end desktop quantum computer or data drive shaped like a flawless, obsidian monolithic tower. It operates using zero-gravity magnetic levitation to separate its components when processing data. Visual Style: Monolithic sci-fi luxury, perfect mirror reflections, intricate internal mechanics, and intense golden particle simulations.
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Cover image for Built a complete multi-page digital
Built a complete multi-page digital experience using Google Stitch. For this project, I designed and prototyped Eternal Maven, a modern AI and technology agency website focused on communicating technical expertise, credibility, and premium brand positioning. What I created: • Homepage with a bold, future-focused visual identity • AI Development, Web Development, and Solutions pages • Case Study section featuring project outcomes and impact metrics • Industry-specific expertise showcase • Technology Stack page highlighting modern tools and platforms • Portfolio gallery for featured work • Blog & Insights hub for thought leadership content • Contact and conversion-focused lead generation experience How I used Google Stitch: I leveraged Stitch to rapidly generate, refine, and prototype high-fidelity screens while maintaining a consistent design system across the entire experience. The platform made it easy to explore ideas, iterate quickly, and build a cohesive multi-page user journey. Design Direction: Dark immersive UI, electric blue accents, glassmorphic elements, modern typography, and premium visual storytelling designed for a 2026-ready digital presence. Prototype: https://stitch.withgoogle.com/preview/10522833652304720789?node-id=98d3602ef68e4bcb88b235a2ac03a4d0 #GoogleStitch #WebDesign #UIDesign #UXDesign #AI #ProductDesign #Prototype #DigitalExperience #Contra
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Cover image for I redesigned the website with
I redesigned the website with a modern, premium, and conversion-focused layout. • Homepage: Full-width hero background with clear messaging and CTAs for a strong first impression • Services: Clean, card-based layout for easy browsing and better UX • Driveways Page: Interactive visuals (carousels / before-after) to showcase work quality • Request a Quote: Streamlined, premium form design to boost completions Built to improve user experience, elevate brand perception, and drive more inbound leads.
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Quantum Engineer(2)