Freelance Fullstack Engineers in SpringFreelance Fullstack Engineers in Spring
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Kokorick AI's avatar
Kokorick AI
Houston, USA
AI Agents | LLMs, Computer Vision & Full-Stack Dev
    90
    Followers
AI Agents | LLMs, Computer Vision & Full-Stack Dev
Cover image for AI-Powered Code Editor for Modern Developers
AI-Powered Code Editor for Modern Developers
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37
Cover image for WorkMind AI: Unified AI Workplace Platform
WorkMind AI: Unified AI Workplace Platform
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27
Cover image for Aegis FaceGuard: AI-Powered Crime Prevention
Aegis FaceGuard: AI-Powered Crime Prevention
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20
Cover image for We just built an AI system that can detect, reconstruct, cou...
We just built an AI system that can detect, reconstruct, count, and dimension timber fully automatically. What started as a computer vision challenge turned into a complete end-to-end industrial pipeline: Detect → Segment → Rebuild → Count → Measure. It’s crazy how much traditional industries can transform when AI steps in. Curious what other real-world problems AI could solve next? 👀 Would love to hear your ideas. #ArtificialIntelligence #ComputerVision #Startups
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Fullstack Engineer(8)
Travis Ziebro's avatar
Travis Ziebro
proSpring, USA
Developer/Founder at Flarework
    5.0
    Rating
    15
    Followers
Developer/Founder at Flarework
Cover image for Healthcare SaaS Website 💙 When
Healthcare SaaS Website 💙 When a complex product has too much to say That’s where the real challenge begins. This platform brings together clinic management, patient workflows, finance, automation, mobile tools, and more, so the website couldn’t afford to feel like a feature dump. I focused on turning all that complexity into a clear product story: what it does, who it helps, and why a clinic should care. SaaS Product Design · Healthcare Technology · Web Design · Responsive Design · Product Storytelling · Conversion Design Simple on the surface. A lot happening underneath. 👀 #HealthcareTech #SaaS #WebDesign #WebDevelopment
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Cover image for Turning interiors into an online experience. 🪑 This concept...
Turning interiors into an online experience. 🪑 This concept is for an interior architecture & design studio, built around the same feeling on Squarespace as the spaces themselves: quiet, warm, minimal, intentional. No loud animations. No crowded sections. Just strong imagery + typography + space doing the work. Built the visual direction with the web experience in mind from the start. 🤝 Designers | developers | studios, always open to creating something together. #interiordesign #webdesign #webdevelopment #creativecollaboration #digitaldesign #full-stack
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Cover image for One thing I’ve learned from
One thing I’ve learned from building products: a design is only the happy path. Once development starts, you have to answer everything the mockup doesn’t show: - What happens when an API fails? - What does an empty state look like? - What if the data takes time to load? - How does the layout behave on smaller screens? - What happens when a user repeats an action? These aren’t just development problems, they often change the UX too. That’s why I like working across 𝐝𝐞𝐬𝐢𝐠𝐧 + 𝐟𝐮𝐥𝐥-𝐬𝐭𝐚𝐜𝐤 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭. You can catch these problems early instead of discovering them after the handoff. A good interface shows the happy path. A good product is ready for everything else. #fullstack #productdevelopment #webdevelopment #uxdesign #reactjs #softwareengineering
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Cover image for ☀️ 𝐌𝐚𝐤𝐢𝐧𝐠 𝐬𝐨𝐥𝐚𝐫 𝐞𝐧𝐞𝐫𝐠𝐲 𝐟𝐞𝐞𝐥
☀️ 𝐌𝐚𝐤𝐢𝐧𝐠 𝐬𝐨𝐥𝐚𝐫 𝐞𝐧𝐞𝐫𝐠𝐲 𝐟𝐞𝐞𝐥 𝐥𝐞𝐬𝐬 𝐩𝐫𝐞𝐝𝐢𝐜𝐭𝐚𝐛𝐥𝐞. That was the direction behind 𝐒𝐮𝐧𝐭𝐫𝐢𝐱 I worked across 𝐝𝐞𝐬𝐢𝐠𝐧 + 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭, shaping the visual direction, responsive layouts, and turning the concept into a working website. The challenge was keeping services, projects, stats, and testimonials clear without overwhelming the experience. 𝐃𝐞𝐬𝐢𝐠𝐧 → 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 → 𝐖𝐞𝐛𝐬𝐢𝐭𝐞 ⚡ #fullstack #webdevelopment #webdesign #uidesign #uxdesign #productdesign
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Fullstack Engineer(4)
Hector Rodriguez's avatar
Hector Rodriguez
proHouston, USA
Crafting solutions with clean code and pixel-perfect design
    3x
    Hired
    4.0
    Rating
    16
    Followers
Crafting solutions with clean code and pixel-perfect design
Cover image for Building a Modern Fintech Experience
Building a Modern Fintech Experience for Bitcoin Boost Mortgage Turning a Complex Mortgage + Bitcoin Concept into a Clear, Interactive Web Experience
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Cover image for Full Stack Work Highlights
Full Stack Work Highlights
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Cover image for Websites Portfolio
Websites Portfolio
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Cover image for Lost in nature, found in
Lost in nature, found in the forest💚 Traveler: Eco-Adventure Landing Page Concept Traveler is a modern UI/UX design concept for an immersive eco-tourism and outdoor adventure platform. Designed with an emphasis on bold typography, natural color palettes, and full-bleed imagery, the interface creates an emotional connection to nature from the moment a user arrives. The layout balances clean content structure with dynamic visual cards for categories like "Forest Stay," "Treehouse," and "Tracking," offering intuitive navigation for eco-conscious travelers seeking remote, sustainable getaways.
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Fullstack Engineer(3)
Dominic Sere's avatar
Dominic Sere
The Woodlands, USA
Design Engineer: Websites, Apps & AI for Startups
    7
    Followers
Design Engineer: Websites, Apps & AI for Startups
Cover image for AI Phone Agent for Payment Calls, Compliance and Escalations
AI Phone Agent for Payment Calls, Compliance and Escalations
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Cover image for One system for a collections
One system for a collections agency's whole day: the accounts, the outreach, the payments and the paperwork. I designed and built it end to end. What I designed: • A visual workflow builder, a custom canvas built from scratch. Triggers, waits, branches, email, SMS, AI voice calls and collector tasks connect on one screen, so operations staff can change a follow-up sequence without a developer. • A manager dashboard: the monthly collection goal, cleared and post-dated payments, team performance, plans at risk and review queues. • A financial command center: a time-layered P&L from today through year to date. • An e-sign tracker with a verification view for every document: tamper check, event timeline, signing forensics and a public verification link. What runs behind it: 36 scheduled jobs handle the work nobody should do by hand, from sending campaigns and texts to warming up email domains, running payments and retrying declines, executing workflows every minute and keeping the AI dialer moving. Stack: Next.js 14, Supabase and Postgres, AWS SES, Retell, Vercel cron. All screenshots use demo data.
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Cover image for EliteDial: AI voice platform built inside a collections agency
EliteDial: AI voice platform built inside a collections agency
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7
Cover image for Trifecta Growth Partners: Brand and Website for My Agency
Trifecta Growth Partners: Brand and Website for My Agency
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5
Fullstack Engineer(3)
Haseeb P.'s avatar
Haseeb P.
proHouston, USA
Senior Mobile & Web App Developer | UI/UX Designer
    6
    Followers
Senior Mobile & Web App Developer | UI/UX Designer
Cover image for Gromuse: Transforming daily essentials into
Gromuse: Transforming daily essentials into a vibrant, high-conversion supermarket and multi-store grocery ecosystem. I crafted the mobile shopping interface and full e-commerce flow for Gromuse, a modern supermarket app designed to make everyday grocery ordering effortless. Moving past cluttered digital catalogs, the visual direction combines fresh botanical green and deep plum palettes with high-contrast produce cards, multi-store price comparisons, and custom themed lists for quick reordering. For checkout and store execution, I structured intuitive split-cart deliveries across local grocers, scheduled timeslot pickers, and a frictionless payment sheet that drives users from basket to order confirmation without dropping conversion momentum. Gromuse App • Grocery UI/UX • Shopify Storefront • Mobile Commerce • Checkout Optimization • Supermarket App Design
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Cover image for Milkinside Gen UI: Reimagining the
Milkinside Gen UI: Reimagining the mobile operating system through fluid generative cards and proactive contextual intelligence. I conceptualized and built the mobile launcher experience for Milkinside Gen UI, replacing traditional static app icon grids with dynamically generated context cards. The concept pioneers ethereal frosted-glass aesthetics, soft iridescent refractions, and contextual timeline branching that intuitively surfaces itinerary planning, medical triage prompts, or flight transit updates exactly when needed. On the implementation layer, I developed lightweight generative UI layouts that dynamically adapt to voice prompts and ambient situational changes, establishing a calm, anticipatory operating system where the device organically shapes itself around user intent. Gen UI Launcher • Milkinside OS • Generative Interfaces • Mobile OS Design • Liquid Glassmorphism • Contextual UX
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Cover image for Folkd: Bringing clarity, warmth, and
Folkd: Bringing clarity, warmth, and precision to compensation workflows with human-centric payroll management. I designed and developed the payroll module for Folkd, an HR management suite crafted to make corporate financial cycles transparent and stress-free. Drawing from warm, organic tones and frosted glass layering, I turned dense compensation data into digestible KPI cards, cost trend charts, and structured breakdown meters (Salaries, Benefits, Tax). For the front-end build, I engineered dynamic status-filtered payslip tables (Paid, Processing, Pending), inline approval mechanics, and integrated task checklists, allowing HR leads to review, calculate, and execute payroll runs with total confidence. Folkd HR Dashboard • Fintech UI/UX • Payroll Experience • Warm Minimalism • Interactive Data Tables • Web Application Development
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479
Cover image for Helix: Fast-tracking conversational AI with
Helix: Fast-tracking conversational AI with an intuitive workspace to build, simulate, and deploy autonomous voice agents. I shaped the foundational experience and responsive web application for Helix, an all-in-one console built to accelerate enterprise voice-agent deployment. Centered around a smart multi-model prompt bar, the UI enables creators to effortlessly attach documentation, switch between leading LLMs, and inspect live synthesis previews directly within the thread. Alongside the creation workflow, I implemented a dark-canvas dashboard featuring real-time call volume analytics, agent availability monitors, and third-party CRM integration readiness to keep automated customer support transparent and reliable. Helix Dashboard • Voice AI Agent UI • Conversational UX • Prompt Bar System • Enterprise AI Platform • Full-Stack Web App
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460
Fullstack Engineer(14)
Adeleke David's avatar
Adeleke David
Houston, USA
Full-Stack Developer building modern web applications and AI
New to Contra
Full-Stack Developer building modern web applications and AI
Cover image for DrGreenClub — E-commerce & Membership
DrGreenClub — E-commerce & Membership Website Designed and developed a responsive e-commerce and membership website for DrGreenClub, a Canadian cannabis brand. I built the site with Next.js, React, TypeScript, and Tailwind CSS, focusing on a modern, responsive experience across desktop and mobile. The project includes custom navigation, membership plans, product collections, retail and wholesale sections, subscription-focused pages, responsive layouts, animations, and third-party form integration. I handled the frontend implementation, page architecture, UI development, responsive behavior, and deployment-ready setup, turning the brand's requirements and visual direction into a functional web experience.
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Cover image for Legacies is a genealogy platform
Legacies is a genealogy platform designed to help people explore, organize, and connect their family histories. The project focuses on making African family history easier to document and navigate. Users can begin with information such as a family name, compound, village, Local Government Area, or state and use that information to build a structured family history. The platform is designed around family trees and shared ancestry, with the goal of helping people discover connections between relatives and preserve information that might otherwise be lost across generations. I built the application as a full-stack project, working across the frontend and backend. The backend uses Node.js and Express, with PostgreSQL for storing and organizing family data. Key areas of the project include: Family and ancestry data organization Family tree exploration Location-based family information Shared-ancestor and family connections Backend APIs and data management PostgreSQL database integration Full-stack web application development Technologies: Node.js, Express.js, PostgreSQL, JavaScript, HTML, CSS, REST APIs
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Cover image for Ria Braids Studio — Luxury
Ria Braids Studio — Luxury Brand Website A fully responsive, motion-designed website built for Ria Braids Studio, a braiding salon serving Royse City and Dallas, Texas. The brief called for a luxury aesthetic that matched the brand's existing visual identity — warm rose, coral, and gold tones extracted directly from the client's logo and marketing materials. Key features: Fixed glassmorphism navigation with mobile hamburger menu, animated hero section with twinkling star field and rotating SVG badge, scroll-triggered reveal animations throughout, service cards with hover micro-interactions, three-tier pricing layout, a step-by-step booking flow, and a contact form that pre-populates and opens WhatsApp for instant client communication. Design approach: Paired Cormorant Garamond (luxury display) with DM Sans (clean body copy) to balance old-world elegance with modern readability. Custom SVG braid-pattern dividers echo the brand's craft. All motion respects prefers-reduced-motion for accessibility. Tech: Vanilla HTML, CSS, JavaScript — no frameworks, no dependencies. Fully self-contained single file.
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Cover image for Designed and developed a full
Designed and developed a full single-page marketing website for Elite Barbers, a 4.9-star rated barbershop located in Bloomsbury, London. The site was built from scratch with a premium dark-and-gold aesthetic to match the brand's upscale positioning. What was delivered: Custom HTML/CSS single-page website — no templates, no frameworks Responsive layout optimised for desktop and mobile Embedded real customer photos (shopfront, haircut gallery) Google Reviews integration (ratings, quotes, star display) Full services section covering all 9 offered treatments Location section with address, hours, phone number, and Google Maps link Fixed navigation with smooth scroll and a call-to-action button Performance-optimised with all images embedded inline (no external dependencies) Tech Stack: HTML5, CSS3 (custom properties, grid, flexbox), Google Fonts Industry: Local Business / Grooming & Wellness Location: London, UK (Remote)
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Fullstack Engineer(2)