- Hourly: $25.00 - $75.00
- Intermediate
- Est. time: More than 6 months, 30+ hrs/week
Job description Corprex builds on-premises AI infrastructure for regulated enterprises. Think sovereign, private AI deployments for manufacturers, utilities, financial firms, and law firms. We keep sensitive data off the cloud entirely. We're a lean, fast-moving startup and we need a senior full stack developer to own a broad scope: our cloud-hosted SaaS portal, customer-facing dashboards, internal platform tooling, and integration work that ties into our on-prem Omega platform. You'll be working directly with the CEO. What you'll work on → Single-tenant cloud SaaS portal (new build) — the hosted version of our on-prem product → Customer-facing dashboards for AI usage, document access, and activity monitoring → REST API development and integration with our backend AI platform → Active Directory / SSO integration work for enterprise deployments → Demo environments and sales-facing tooling used in Fortune 500 prospect demos → Internal ops tooling as needed Requirements → US-based, available during Eastern or Central business hours → 5+ years full stack experience — strong backend required (Node.js, Python, or similar) → React or Next.js on the frontend → Cloud deployment experience — AWS, GCP, or Azure → Comfortable working in a startup environment with minimal oversight → Experience with enterprise auth (Active Directory, LDAP, SAML, or OAuth) is a strong plus → Prior work on AI-integrated products (RAG pipelines, LLM APIs, vector DBs) is a plus Engagement details Scope: Ongoing / retainer Hours: Part-time to full-time Location: US only To apply, answer these in your proposal 1.What's a backend-heavy project you've shipped end-to-end? Briefly describe the stack and your role. 2.Have you worked with enterprise auth (AD, SAML, SSO)? If yes, in what context? 3.What's your availability and hourly rate?
- Hourly: $30.00 - $40.00
- Expert
- Est. time: More than 6 months, Less than 30 hrs/week
We are seeking a Mid to Senior-level Fullstack Developer (3–5 years of experience) to not only maintain and expand our platform (Next.js frontend + Django backend) but also guide us in fully integrating AI-powered coding assistance across the full stack. The frontend is already set up for AI-assisted editing (e.g. Cursor), and we want to evolve our backend similarly. The ideal candidate will help us transition the entire development environment, so both we and the developer can leverage state-of-the-art AI coding tools. Beyond coding, you’ll act as a mentor, helping us better understand the backend’s architecture and workflows while integrating AI-driven development tools into our process. You’ll have a key role in making our stack both stable and future-ready, with AI-assisted flexibility. The Context Our frontend was recently ported to Next.js in an ad-hoc manner, leaving certain sections in need of refactoring and stabilization. We have committed to keeping our backend in Django to leverage its robust processing capabilities. You will be the point person for bridging these two environments. Key Responsibilities -Maintenance & Stability: Perform routine maintenance and optimization across the full stack. -Bug Fixing: Identify and resolve issues within the existing Next.js frontend and Django backend. -System Reliability: Provide technical support and troubleshooting during system downtime. -Feature Implementation: Build and deploy new features, ensuring seamless integration between the AI pipeline and the user interface. Required Technical Profile -3–5 years of professional fullstack experience. -Frontend: Proficiency in Next.js and React; experience cleaning up/refactoring "messy" or legacy codebases is a plus. -Backend: Strong experience with Django (Python), specifically working with complex data pipelines or API integrations. -Mindset: A pragmatic approach to coding—balancing the need for new features with the necessity of technical debt reduction.
- Hourly
- Expert
- Est. time: More than 6 months, 30+ hrs/week
⭐ JOB AD: Full Stack Java Developer (Hybrid – NJ Office Required for Initial Paid Assessment) Location: Mountain Lakes, NJ (Initial in‑office assessment required) Type: Contract → Long‑Term / Hybrid Compensation: Competitive, based on experience and performance We are expanding our engineering team as we scale our Revenue Generation Engine (RGE) and Autonomous OS — advanced AI-driven systems powering multiple client platforms. We are seeking a Full Stack Java Developer who is comfortable working across modern backend and frontend stacks, and who can execute clean, efficient, and secure development workflows. This role begins with a paid, in‑office technical assessment at our private NJ development office. This is standard procedure due to the sensitive nature of our systems and the proprietary architecture we maintain. ⭐ What You’ll Do (Initial Assessment Project) The first assignment is a small, well‑defined technical task designed to evaluate your baseline competency with standard development tools and workflows: - Setting up and running a project locally - Working with GitHub repositories - Re-establishing deployment pipelines (e.g., Netlify or similar) - Ensuring clean builds and proper CI/CD functionality These are foundational skills expected of any experienced developer. Successful completion unlocks access to larger, ongoing AI and enterprise projects. ⭐ What We’re Looking For - Strong experience with Java, Spring Boot, REST APIs, Microservices - Solid understanding of React/Angular, modern front-end workflows - Comfort with GitHub, CI/CD, cloud deployments (Netlify, AWS, GCP, Azure) - Ability to work efficiently, follow structured processes, and deliver clean execution - Professionalism, reliability, and strong communication - Ability to work on-site for the initial assessment (required) - Availability for hybrid or remote work afterward (project-dependent) ⭐ Why Work With Us - We are scaling rapidly and onboarding multiple developers - You will work directly with our architecture and AI systems team - Opportunity to grow into long-term, high-impact roles - Exposure to cutting-edge AI automation and enterprise-level systems - Competitive compensation with performance-based advancement - A culture focused on speed, precision, and innovation ⭐ How to Apply Please send: - Your resume or LinkedIn profile - Your standard rate (hourly or fixed) - Your availability for the in‑office paid assessment in Mountain Lakes, NJ Office We are moving quickly and evaluating candidates on a rolling basis.
- Hourly
- Expert
- Est. time: More than 6 months, 30+ hrs/week
About the Role We are a funded fintech startup building a first-of-its-kind platform at the intersection of digital banking and social media intelligence. Think credit scoring — but for creators and entrepreneurs. Our platform combines financial tools, OAuth-connected social data, and a proprietary scoring engine into a seamless product used by creators, small business owners, and entrepreneurs. We are looking for a Senior Full-Stack Developer to own our entire technical stack — from server infrastructure to front-end experience — and help us scale from beta into a full product launch. This is not a freelance gig. This is a full-time salaried role with real equity potential at an early-stage company that is actively raising its seed round. You will be the technical backbone of the company. You will work directly with the founding team. What You Will Be Working On A PHP/Laravel API backend serving a multi-app ecosystem across production, staging, and demo environments A vanilla JS + HTML/CSS front-end for a consumer-facing creator dashboard, public profile pages, and a verification system A proprietary scoring engine that processes consented, first-party OAuth data from platforms including X/Twitter, Instagram, TikTok, LinkedIn, and YouTube A digital banking portal for investor and user financial management (Mercury, Dwolla, Stripe integrations) A server infrastructure running on a dedicated Hetzner bare-metal server (Ubuntu 24, Plesk, Apache, MySQL, Redis) that you will own end to end An admin dashboard for internal team operations — user management, lending, capital, communications Upcoming work: CI/CD pipeline implementation, Redis migration to internal infrastructure, TikTok and Meta OAuth API wiring, mobile-responsive passes, and banking partner integration The Stack Backend: PHP 8.x / Laravel, MySQL, Redis Front-End: Vanilla JavaScript, HTML5, CSS3 (no framework — clean component-based architecture) Infrastructure: Ubuntu 24.04, Plesk Obsidian, Apache, Hetzner dedicated server Integrations: OAuth 2.0 (X, Instagram, TikTok, LinkedIn, YouTube), Dwolla, Mercury, Twilio, Firebase, Stripe, Shopify Version Control: GitHub (org-based, branch workflow) Other: QR code generation, real-time verification systems, social data normalization What We Are Looking For Must-haves: 5+ years of full-stack development experience Strong PHP/Laravel — you can read, debug, and architect Laravel apps without hand-holding Solid vanilla JavaScript — you do not need React or Vue to build clean, fast, interactive UIs Comfortable owning server infrastructure — SSH, Linux, Plesk or cPanel, Apache config, MySQL administration Experience with OAuth 2.0 integrations — connecting to social media platform APIs is second nature Familiarity with fintech concepts — payments, banking APIs, KYC/AML flows, or financial data handling Git workflow discipline — clean commits, branch management, no cowboy pushes to main Strong written communication — you document your work, you write clear commit messages, you can explain architecture decisions to non-technical stakeholders Strong pluses: Experience at a fintech startup or financial technology company Familiarity with social media platform developer programs (X API, Meta Graph API, TikTok for Developers) Experience setting up CI/CD pipelines (GitHub Actions, Forge, Envoyer, or similar) Experience with Redis configuration and migration Any background in credit scoring, data normalization, or analytics engine architecture Prior W-2 employment experience (this is not a 1099 contractor role) What You Get Full-time salaried position — compensation discussed during interview based on experience Direct access to and collaboration with the founding team The opportunity to be the lead technical voice at a company that is actively fundraising and preparing for a full public launch A codebase that is real, live, and in use — not a greenfield project, not a prototype Remote-first culture — flexible hours, async-friendly, results-driven What This Is Not This is not a short-term project or hourly contract This is not a role where you will be handed a spec and left alone This is not a company where the tech is an afterthought — the product IS the technology
- Hourly: $45.00 - $100.00
- Intermediate
- Est. time: More than 6 months, 30+ hrs/week
Location: Remote Team size: Small (you’ll know everyone’s name) Stack: Java 21 / Guice / Gradle backend + React 19 / TanStack / MUI frontend About the role QAction is a large-scale Java enterprise document, records, and workflow platform — multi-project Gradle build, ~15 modules, customer-specific deployments (USDA, Ditco, Ascension, Mayo). The backend is being modernized behind an OpenAPI v2 surface (oasv2); the frontend is being rebuilt off GWT onto React 19 + TanStack Router/Query/Start with MUI v7. We need a developer who’s equally comfortable extending a v2 endpoint in a Guice-wired Java service as they are wiring up a TanStack Query call behind a Lexical editor or a virtualized data table — and who treats Claude Code as a peer on the keyboard, not a novelty. You’ll work directly with the product lead. No layers, no JIRA theater. Ship, review, iterate. What you’ll do Own vertical slices end-to-end: OpenAPI spec → Manager/ManagerImpl + EndpointImpl in QAction Java → React 19 / TanStack Query UI → JUnit + Playwright coverage. Extend the QAction Java backend: Guice (constructor injection only), Hazelcast-aware code paths, customer-deployment-aware module wiring, JUnit under oasv2. Build Modern UI features in the React 19 stack: TanStack Router/Query/Start, MUI v7 + Emotion, React Hook Form + Zod, Lexical, dnd-kit, OIDC auth (oidc-client-ts), TypeScript with the wrapper-component discipline already in place (Button, Icon, LabeledObject, ScrollShadows, etc. — never raw MUI in features). Move features off GWT onto the React 19 stack one slice at a time, without breaking the legacy app. Pair with Claude Code daily — write prompts that ship code, review agent diffs critically, and improve our skills/agents library when the workflow has friction. Keep integration tests honest: real DB + Solr + Keycloak at the seam, not mocks. Tech direction you’ll be living in Backend Java 21, Gradle multi-project (build single modules — ./gradlew QAction:build — never clean build) Guice DI, constructor injection, Manager/ManagerImpl naming (we don’t use “Service”) OpenAPI-first v2 endpoints in oasv2, canonical error model, paginated response classes as standalone beans in oasv2.beans Hazelcast clustering, Solr search, Postgres/MSSQL, Keycloak/OIDC FileNet integration, document import/migration tooling, RMT/remote services Frontend (modern) React 19 + TypeScript, Vite 7, TanStack Router + Query + Start + Table MUI v7 + Emotion, MUI X Date Pickers + Tree View Lexical (rich text), @dnd-kit + Atlaskit pragmatic-drag-and-drop, react-virtualized, react-pdf React Hook Form + Zod, oidc-client-ts + react-oidc-context, notistack, pino File naming kebab-case, @/ path imports, theme-first styling, wrapper components over raw MUI Adjacent surfaces in scope over time qaction-vectorizer, qaction-shared (qcore / qdatabase / qcontent-search / qdomain-model), qaction-simple-api, qaction-load-tests, qaction-helm deployment What we’re looking for 8+ years shipping production app code across backend and frontend. You’ve owned services and UIs, not just one or the other. Java fluency — Guice or Spring DI, REST/OpenAPI design, JUnit. Bonus if you’ve worked in a 1M+ LOC enterprise Java codebase with customer-specific module deployments and didn’t flinch. Modern React fluency — React 18/19, TypeScript, TanStack Query (or React Query), a real opinion about effect dependency graphs, comfort with virtualized tables and rich-text editors. OpenAPI-first thinking. Specs are the source of truth, not documentation written after the fact. Claude Code power user. You write prompts that delegate well, you know when to use a subagent vs. inline, you’ve built or extended skills/hooks/MCP integrations. You can show us a recent session where Claude shipped something non-trivial under your direction. Small-team temperament. You’re allergic to ceremony. You read code before asking. You raise a small PR when it’s ready. Nice to have GWT (you won’t write new GWT, but you’ll need to read and migrate it). Workflow / BPMN, records management, e-signature, or ECM domain experience. Hazelcast, Solr, Keycloak operational familiarity. Lexical or another modern rich-text editor. Playwright (you’ll inherit a calibrated suite — we want you to improve it, not rewrite it). Podman/Docker compose stack bring-up across Postgres, MSSQL, Solr, Keycloak. Python services or Helm/Kubernetes deployment experience. How we work Small PRs. Every change ships through review. If it’s getting big, split it. Test-driven design. Tests come with the code, not after. JUnit on the Java side, Vitest + Playwright on the React side. Daily standups. 15 minutes, async-friendly, but we show up. Memory-backed Claude Code sessions — agents learn the codebase with you, not against you. To apply Send a link to a recent PR you’re proud of (any language) and a 5–10 minute Loom of you using Claude Code on a real task. We care more about the second one.
- Hourly
- Intermediate
- Est. time: 1 to 3 months, Less than 30 hrs/week
I’m going to put my thoughts here and I’d like to hear how you feel about them. I have used AI to help organize my thinking a bit, so it might sound a little strange. If something doesn’t make sense, ask me to explain: For developers (to keep space for future add ons) “I need the audio processing built as a standalone modular service with clear API integration points. I want to be able to plug in third party speech analysis tools like Azure Pronunciation Assessment and Speechace at a later stage without rebuilding the core app. Please build with that extensibility in mind from day one.” Here’s a stack for consideration: Whisper → transcription (free, multilingual) + spaCy → linguistic breakdown (free, open source) + Claude API → generate the human-friendly summary card The conversation happens → audio gets transcribed → AI analyzes the transcript → summary with nouns, verbs, and phrases is generated. Three steps, each with tool options. Value-Adds Once you sign in (both subscribers and members, you will have access to different “decks”. As we discussed previously, this should be one of the “hidden” features. In other words, it shouldn’t take away from the world map with the illuminated cities, but it should be accessible so that users can go there at any time. Each deck should hold brain games, word associations, key phrases, conversation openers, etc that won’t tell them what to say, but will train them in moving from thought to action. Decks like “key phrases”, “topical studies”, “everyday use words”, “casual speech”, and even Tone decks that help with pronunciation. All to train the mind and mouth for the active step towards conversation. Users can build their own decks and their summary cards can be accessed here (as well as being emailed). Giving users the option to build their own decks gives them more control and more understanding of sentence structures. First, they create “stacks” by putting words together to make real sentences. The stacks can then be placed in new “decks” for easy access. Giving users the power to created stacked decks will also help train them in sentence structuring and word usage. As they build and apply the decks in their conversations, they will simultaneously be leveling up in conversational skill level. This will be the advantage of using the website/app beyond the conversation.
- Hourly: $90.00 - $130.00
- Expert
- Est. time: More than 6 months, 30+ hrs/week
Job Title Full-Stack GIS Web Developer (Contingent Hire - Federal Proposal) Project Overview Clear Connect Management LLC is seeking a highly skilled Full-Stack GIS Developer for a contingent position supporting a federal contract proposal for the U.S. Army Corps of Engineers. This role is contingent upon contract award. The selected candidate will need to provide a clean resume and sign a standard, non-binding Letter of Intent (LOI) to be included in our technical proposal submission before May 27. Role Type Remote, Part-Time / On-Demand (Budgeted for approximately 80 to 100 hours per month, with required surge capacity during active emergency weather events). Hourly Rate $90.00 - $120.00 / hour (Commensurate with enterprise experience). Mandatory Requirements CompTIA Security+ active certification (or equivalent DoD 8570 IAT Level II baseline credential) is strictly required. Non-certified applicants will be automatically disqualified. Must be a U.S. citizen capable of passing a standard federal background investigation (Tier 2 / Public Trust suitability check) upon contract award. Note: An active secret clearance is a major plus but not a requirement for proposal submission. Key Responsibilities Maintain, update, and optimize map-based web applications and geographic information systems. Manage, configure, and tune map layers and spatial data using GeoServer to ensure high performance under heavy user loads. Develop responsive frontend mapping features and clean user interfaces. Maintain backend spatial databases, writing optimized queries for geographic shapes and coordinate data. Integrate real-time meteorological data feeds, data polygons, and tropical cyclone advisories into the mapping interface. Required Technical Skills Frontend: Strong experience with JavaScript/TypeScript and web mapping libraries including Leaflet, OpenLayers, or Mapbox GL JS. Backend: Proficiency in Python (Django, FastAPI) or Node.js. Database: Deep knowledge of PostgreSQL with the PostGIS extension for spatial data management. GIS Server: Hands-on experience with GeoServer management, including WMS, WFS, and map tile caching. Data Formats: Expert handling of Shapefiles, GeoJSON, KML, and live weather data feeds. Pluses Previous experience working within secure cloud environments or AWS GovCloud infrastructure. Application Requirements To be considered, you must submit an updated technical resume that clearly lists your current technical certifications. If selected for the proposal team, you must be willing to sign a simple, one-page contingent Letter of Intent stating your availability to fill this role if our firm is awarded the prime contract.
- Fixed price
- Intermediate
- Est. budget: $2,000.00
We are a Chicago based company looking for a skilled Full Stack Frontend Developer. The ideal candidate will have experience with a strong focus on full stack front end technologies with expertise in Unity. You will work closely with our team to design, implement, and optimize our web application pertaining to development of our K-5 online educational platform. This is a paid position of $1,000 per month for two months total. All ninety minute Zoom meetings will be exclusively held on Friday, but we reserve the right to request any additional meeting if needed. During the rest of the week the individual will work on developing a seamless online experience for the front end subscriber on the Unity platform. The frontend developer will also work with the current backend developer. We will share out updates as a part of a team during the weekly meetings. Please visit our website speegsmedia.com Deliverables • Integrate a web page with an online platform created in Unity. • Optimize application performance on the online platform. • Collaborate with other developer(s)
- Hourly: $50.00 - $95.00
- Expert
- Est. time: 3 to 6 months, 30+ hrs/week
Contentstack cms project with next.js fe and vercel backend. Need a strong engineer that can work full time for 4 months. Daily calls, meetings and senior level with multiple prior Contentstack projects
- Hourly: $40.00 - $50.00
- Intermediate
- Est. time: 1 to 3 months, Less than 30 hrs/week
I need a senior full-stack developer or database architect to review a detailed technical specification and provide a fixed-price or phased proposal. The role involves analyzing the specification, identifying potential issues, and suggesting improvements. Strong analytical and communication skills are essential for this task.