- Hourly: $50.00 - $80.00
- Intermediate
- Est. time: Less than 1 month, Less than 30 hrs/week
Need to get a site (already built) up and running on my web server: Able to configure DNS, IIS, ColdFusion, and psbly (not required) NodeJS. Just looking for someone to guide me through a lengthy zoom session to get it done. May involve some configuring in CloudFlare. Minimum time billed: 1 to 3 hours.
- Hourly
- Expert
- Est. time: 1 to 3 months, Less than 30 hrs/week
We are looking for a senior engineer/consultant with experience building Next.js and Node.js applications hosted with AWS. The ideal candidate has worked on high-traffic sites with very large route/page counts and understands production performance, reliability, memory usage, caching, load testing, and cloud infrastructure. Experience required: Next.js / React Node.js AWS production hosting Docker/containerized deployments MongoDB OpenSearch or Elasticsearch Large-scale public sites with millions of pages We need help reviewing the application and infrastructure, identifying performance and reliability risks, diagnosing production issues, and recommending or implementing fixes. Please only apply if you have direct experience with this technology stack and websites at this scale.
- Hourly: $40.00 - $50.00
- Expert
- Est. time: More than 6 months, Less than 30 hrs/week
We’re looking for an experienced full-stack React / React Native developer to help maintain and grow our B2B SaaS platform. Yelli is a web and mobile platform used by restaurants and hospitality businesses for training, onboarding, communication, testing, and operational documentation. The platform is already live with paying customers, and we are currently focused on improving the product, shipping new features, and scaling the platform. This is not a greenfield project. You'll be stepping into an existing codebase and working directly with the founder to improve, maintain, and evolve the product. Tech Stack: - Node.js - TypeScript - React - React Native - MySQL - AWS (EC2, S3, CodeDeploy) - Firebase - GitLab CI/CD What You'll Be Doing: - Maintaining and improving an existing web and mobile application - Fixing bugs and troubleshooting production issues - Shipping new features and enhancements - Reviewing existing architecture and suggesting improvements - Participating in weekly planning and progress meetings - Communicating progress and blockers proactively - Taking ownership of assigned projects from start to finish What We're Looking For: - 5+ years of professional full-stack development experience - Strong experience with React and React Native - Strong Node.js and TypeScript experience - Experience working with AWS-hosted applications - Experience with MySQL and relational database design - Comfortable working within an existing codebase - Strong debugging and problem-solving skills - Excellent written and verbal English communication - Reliable, responsive, and self-directed Bonus Points - SaaS startup experience - Hospitality or restaurant technology experience - UI/UX experience - Experience leading projects or mentoring developers - DevOps or infrastructure experience !!Important!! Communication is extremely important for this role. We are looking for someone who can communicate clearly, participate in weekly video meetings, explain technical decisions in plain English, and provide consistent updates on progress and blockers. Engagement Details: - Part-time freelance to start - Approximately 10–20 hours per week - Long-term opportunity for the right person - Direct relationship with the company (no agencies or subcontracting) When applying, please include: - A brief summary of your React Native experience - A SaaS product you've worked on that is currently live - Your availability (hours per week) - Your hourly rate - Why you think you'd be a good fit for this role Please do not use AI-generated proposals. We are looking for thoughtful, personalized responses that demonstrate relevant experience.
- Hourly: $60.00 - $70.00
- Expert
- Est. time: 3 to 6 months, 30+ hrs/week
About Us Veru 365 is building a next-generation platform for AI agents in financial services — designed to create highly personalized, secure, and compliant user experiences that feel intelligent, proactive, and human. Our focus is agentic behavior: systems where AI agents can reason, retrieve knowledge, maintain context, and execute workflows safely. We are building on Google Cloud Platform, leveraging Vertex AI, modern RAG pipelines, secure memory systems, and production-grade infrastructure to support real-world financial conversations and workflows at scale. This is not a prototype. It's a platform for agent-based financial experiences — built for security, auditability, and scalability from day one. Role Overview We're seeking a hands-on Full-Stack Developer to architect, build, and scale our AI agent platform on Google Cloud. You will help deliver a secure, scalable system that supports high-concurrency sessions, integrates with financial APIs, and meets the operational requirements of regulated environments. We're looking for more than a contractor mindset — this is a role for someone who wants to be a true teammate, take ownership, and build something meaningful. As an early team member, you'll have major influence over product direction and execution. We value high ownership and a bias toward execution — people who are energized by building and hold themselves accountable to outcomes. Key Responsibilities 1. Agent Platform Architecture (Agentic Systems + GCP) • Design and implement the end-to-end architecture for a multi-agent AI system with shared memory, retrieval, and tool execution. • Build infrastructure enabling agents to perform tasks safely: reasoning, workflow execution, data handoff, and contextual continuity. • Create scalable backend services to orchestrate agent flows, guardrails, conversation state, and event-driven tool use. • Develop APIs and middleware for workflow automation (lead gen, onboarding, scheduling, CRM handoffs). 2. Vertex AI + RAG + Knowledge Systems • Implement retrieval-augmented generation (RAG) pipelines for financial domain knowledge (ingestion, chunking, embedding, indexing, evaluation). • Leverage Vertex AI for scalable inference, model orchestration, and agent tooling. • Build safety tooling: retrieval scoring, citation tracking, hallucination reduction, and guardrail enforcement. • Ensure consistent agent behavior across workflows and use cases. 3. Full-Stack Product Development (Production-Ready Systems) • Build and maintain the application experience (Next.js/React) and supporting backend services (Python/Node). • Implement real-time chat / streaming interfaces (WebSockets or server-sent streaming) with strong observability. • Integrate authentication, session management, and analytics (OAuth2, Google Analytics, telemetry). • Develop internal dashboards for compliance, performance monitoring, and operational support. 4. Security, Privacy & Compliance Engineering • Design secure storage and handling of confidential financial information, including encrypted databases and strict access controls. • Implement audit-ready logging: tool execution logs, conversation transcripts, timestamps, summaries, and retention rules. • Apply secure application development best practices: threat modeling, least privilege access, secret management, secure APIs. • Build privacy-first systems suitable for regulated environments. 5. Scalability & Reliability • Architect the platform for high concurrency and reliability (thousands of simultaneous sessions). • Implement caching, rate limiting, fault tolerance, and cost-controlled scaling strategies. • Build performance monitoring and alerting, with strong operational visibility into system behavior. Preferred Technical Stack / Experience Google Cloud Platform (Strong Preference) • Vertex AI (LLM orchestration / agent frameworks / model hosting) • Cloud Run or GKE (production deployment) • Pub/Sub (event-driven workflows) • Cloud Storage (document ingestion / RAG) • BigQuery (analytics / reporting) • Cloud SQL / Firestore (structured + session storage) • Secret Manager + KMS (security + encryption) • VPC, IAM, identity controls (enterprise-grade security) Languages & Frameworks • Python (FastAPI) • TypeScript / Node.js • Next.js + React • LangChain / LlamaIndex or agent frameworks • PostgreSQL, Redis • Vector DB / Vector Search (Vertex AI Vector Search, Pinecone, Weaviate) Integrations • OAuth2 • Financial APIs / brokerages / custodians • CRM integrations (Salesforce, Wealthbox) • Analytics + monitoring pipelines Qualifications • 5–10 years full-stack experience building scalable systems in production. • Strong experience on Google Cloud, including deployment and scaling patterns. • Demonstrated ability to build and secure applications handling confidential or regulated data. • Proven success integrating APIs, databases, and third-party SDKs into reliable architectures. • Experience with conversational AI, RAG, agent frameworks, and vector search. • Strong product instincts: ability to translate complex workflows into clean, intuitive UX. • Startup mindset: autonomous, high ownership, strong judgment, and bias toward execution. What We're Looking For • A builder who takes ownership and treats the product like it's theirs. • Strong security instincts and confidence working with sensitive data. • Deep interest in agentic AI systems, tools, memory, and safe workflow execution. • Someone who thrives in fast-paced environments where progress matters and the roadmap evolves quickly. • A teammate who can collaborate closely with the Founder and drive projects to completion with high ownership and accountability. If this product excites you but you don't check every box, we still want to hear from you. Apply anyway. Exceptional people don't always fit neatly into job descriptions, and we're always open to considering strong candidates for other roles on our team.
- Fixed price
- Expert
- Est. budget: $7,500.00
We are a medically backed, pre-seed healthtech platform preparing for an immediate enterprise pilot deployment. Our core user interface, interactive data features, and content architecture are functionally built utilizing modern AI-assisted development tools. We are seeking a senior, hands-on engineer with specific healthtech deployment experience to serve as our Execution Contractor for an immediate hardening sprint. You will own the backend security architecture, external cloud infrastructure configuration, and technical compliance validation required to transition our high-fidelity MVP into a secure production environment. What You’ll Do Harden Backend Security: Transition frontend route guards into strict, server-side authentication and authorization boundaries across all data-access paths. Architect Secure Infrastructure: Migrate core data architectures out of staging environments and securely provision an external, HIPAA-compliant cloud database tier. Manage Vendor & Compliance Workflows: Audit our technical vendor stack to securely embed enterprise API protocols, ensuring strict data handling and compliance alignment across all integrated platforms. Validate & Sign-Off: Run edge-case testing and performance audits to completely secure data handling pipelines, delivering a technical go/no-go sign-off for our upcoming pilot cohort. The Technical Stack Frontend: React 18+, TypeScript Backend: Node.js, Express.js Database/ORM: PostgreSQL via Drizzle ORM Environment/Tooling: WebSockets, Enterprise AI APIs, Secure Cloud Infrastructure (AWS / Supabase) Who You Are A seasoned full-stack or backend engineer with a proven track record of successfully deploying applications into live clinical, medical, or heavily regulated environments. Deeply knowledgeable in server-side encryption, data pseudonymization, and secure cloud networking. Highly comfortable inheriting, auditing, and optimizing architectures built alongside AI-assisted development workflows. An execution-focused builder who thrives in high-velocity sprints and values absolute production discipline. To Apply: Please submit your proposal directly through Upwork with a brief summary of your healthtech deployment experience, specifically highlighting your experience with secure data pipelines, PostgreSQL, and HIPAA configurations.
- 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
- Fixed price
- Intermediate
- Est. budget: $10,000.00
We are looking for an experienced Full Stack Developer to help build a SaaS MVP from the ground up. The goal is to launch a clean, scalable, and production-ready MVP that includes user accounts, subscription billing, dashboard functionality, admin controls, backend APIs, and third-party integrations. This project is ideal for a developer who has experience building SaaS platforms, startup MVPs, customer dashboards, admin panels, secure authentication systems, payment integrations, and scalable backend architecture. The MVP should be built with a clean structure so it can be expanded after launch with more features, user roles, automation, analytics, and integrations. Main features needed: • User registration and login • Subscription-based user accounts • Customer dashboard • Admin dashboard • User and role management • Stripe subscription billing • Payment plans and billing portal • Secure backend APIs • Database setup and management • Email notifications • Basic analytics/reporting • Third-party API integrations • Responsive web application • Deployment to production • Documentation and handoff Required skills: • SaaS Development • MVP Development • Full Stack Development • React.js / Next.js • Node.js / Express.js • TypeScript / JavaScript • REST API Development • Stripe Integration • Subscription Billing • PostgreSQL / MongoDB • User Authentication • Admin Dashboard Development • API Integration • Cloud Deployment • Git / GitHub Budget: Fixed price: $10,000 Suggested milestones: Milestone 1: Project setup, database structure, authentication, and core backend APIs Milestone 2: Customer dashboard, user roles, and main MVP features Milestone 3: Stripe subscriptions, admin dashboard, email notifications, and API integrations Milestone 4: Testing, deployment, documentation, and final handoff We are looking for someone who can take ownership of the MVP, communicate clearly, suggest practical technical solutions, and deliver clean, scalable code. The first version does not need to be overloaded with unnecessary features, but it should be stable, professional, and ready for real users. To apply, please include: Similar SaaS or MVP projects you have built Your recommended tech stack for this project Your estimated timeline Your experience with Stripe subscriptions Your experience with dashboards and admin panels Please start your proposal with the word “SAAS” so we know you read the full post.
- Hourly
- Expert
- Est. time: 1 to 3 months, Not sure
Full-Stack Developer Needed to Migrate Replit Calibration Lab App to Local Server Environment Project Overview We have a custom Calibration Laboratory Management application that was developed on Replit and is currently functional. We are seeking an experienced software developer to migrate the application from the Replit environment to a locally hosted solution that can run on our company computers and servers. The goal is to create a stable, secure, and maintainable deployment that operates within our organization's network while preserving all existing functionality. Responsibilities Review and assess the existing Replit codebase Migrate the application to a local/on-premises environment Configure and deploy the application on Windows or Linux servers Migrate and configure the database (if applicable) Set up user authentication and security best practices Create installation and deployment documentation Provide recommendations for long-term maintenance and scalability Assist with testing and troubleshooting during deployment Required Skills Full-stack software development Experience with Replit migrations Node.js, React, Python, or similar web application frameworks Database administration and migration Windows Server and/or Linux server deployment Networking and local server configuration Docker experience (preferred) Git/GitHub version control Deliverables Fully functioning local version of the application Configured database and server environment Deployment documentation Backup and recovery recommendations Source code repository with all changes
- Hourly: $40.00 - $85.00
- Expert
- Est. time: 3 to 6 months, Less than 30 hrs/week
I need an experienced developer to help maintain and improve our NetSuite and ERP-related integrations. The main work is around moving data cleanly between NetSuite, SQL Server, internal systems, reporting tools, and third-party platforms. We need someone who can handle API integrations, scheduled syncs, field mapping, failed records, duplicate issues, and reporting accuracy. This is not just a simple connector job. We need a developer who understands business data, finance or operations workflows, and how to make integrations reliable in production. Experience with NetSuite, .NET or Node.js, SQL, REST APIs, Azure, and ERP/e-commerce integrations would be a strong match.