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  • Fixed price
  • Expert
  • Est. budget: $300.00

Important: Our website consists of JavaScript-rendered pages, and we are implementing Prerender.io to serve pre-rendered HTML versions to search engine crawlers for improved indexing and SEO performance. We are only interested in candidates who have direct, hands-on experience successfully installing and configuring Prerender.io in a production environment. Project Overview We operate a large content-driven website containing approximately 300,000 pages. We need an experienced developer to implement, configure, test, and optimize Prerender.io within our AWS infrastructure. Responsibilities Install and configure Prerender.io Configure crawler detection and prerendering rules Set up and optimize caching strategies Configure AWS infrastructure to support prerendering at scale Ensure proper indexing by Google, Bing, and other search engines Test and validate rendered output across page types Optimize performance and minimize rendering costs Document implementation and deployment processes Troubleshoot rendering and indexing issues Current Tech Stack Infrastructure AWS CloudFront Route 53 EC2 / ECS S3 CloudWatch Backend Node.js Express.js REST APIs Frontend React JavaScript / TypeScript Data MongoDB PostgreSQL Required Experience Must have previously installed and configured Prerender.io in production Strong AWS architecture and deployment experience Experience supporting large websites (100,000+ pages preferred) Technical SEO expertise related to JavaScript-rendered websites Experience with React and Node.js applications Knowledge of CloudFront caching and CDN optimization Strong troubleshooting and performance optimization skills To Apply Please provide: Details of your Prerender.io implementation experience Links or examples of websites where you implemented it Relevant AWS experience Your proposed implementation approach Estimated timeline and availability Applications without prior Prerender.io implementation experience will not be considered.

  • Hourly
  • Expert
  • Est. time: 1 to 3 months, Less than 30 hrs/week

I’m looking for an experienced Full-Stack Web Developer to help build and improve a business website while adding interactive mapping functionality. The ideal candidate should be comfortable with both front-end and back-end development and have experience integrating map-based tools into websites. What I’m Looking For: * Website design and development * Mobile-responsive layouts * Fast-loading, modern user experience * Lead capture forms * Database integration * Interactive maps * Territory or area selection tools * Location-based functionality * API integrations * Ongoing improvements and feature development Preferred Skills: * React, Next.js, or similar frameworks * Node.js or other back-end technologies * Database management * Google Maps API, Mapbox, or similar mapping platforms * UI/UX design experience * Strong problem-solving skills

Posted 2 weeks ago
  • Fixed price
  • Entry Level
  • Est. budget: $250.00

We are looking for an entry-level Software Engineer who is strong in computer science fundamentals and algorithms. You will work on real-world software problems. This role suits someone who enjoys bridging theory and practice: thinking carefully about problem formulation, writing clean and efficient code, and taking ownership of results end-to-end. ROLE OVERVIEW You will work within a small, cross-functional team to build software. You will be expected to think algorithmically, write quality code, and communicate your findings clearly to non-technical stakeholders. KEY RESPONSIBILITIES Analyse product and business requirements provided by the team. Select appropriate algorithms and architectures based on data characteristics, constraints, and performance requirements. Design and implement efficient data structures and algorithms. TOOLS & STACK Knowledge in these areas are preferred. Postgres and Mongo DB Machine learning and LLM frameworks Middleware and mobile concepts especially React-Native and Javascript/NodeJS Infrastructure: Basic familiarity with GCP or AWS Version control: Git QUALIFICATIONS Bachelor's degree in Computer Science is preferred Strong foundations in algorithms and data structures — able to reason about complexity and write efficient code. Good understanding of machine learning and LLM concepts Clear written and verbal communication; able to explain model behaviour and trade-offs to non-specialists.

  • Hourly: $35.00 - $50.00
  • Expert
  • Est. time: 1 to 3 months, Less than 30 hrs/week

Looking for a skilled full-stack developer to help build and refine an early-stage SaaS platform currently in MVP development. The platform combines guided workflows, AI-assisted functionality, user dashboards, and subscription-based features within a modern web application experience. We're looking for someone who can help transform an existing concept and partial prototype into a polished, scalable product. Ideal for developers interested in: SaaS platforms AI integrations Scalable web applications Subscription products Startup environments Responsibilities: Frontend and backend development Authentication and user dashboards Stripe/payment integration Database architecture API integrations Responsive UI/UX refinement Scalable application structure Deployment and production setup Preferred Stack: React / Next.js Node.js PostgreSQL Tailwind CSS Stripe REST APIs OpenAI or similar AI integrations Ideal Candidate: Strong full-stack development experience Experience building SaaS products Comfortable working independently Understands scalable architecture Good communication skills Startup mindset Bonus: Experience with AI-powered applications Experience with multilingual platforms Project Stage: Early-stage MVP Potential long-term collaboration Please send: Portfolio or GitHub Relevant projects Preferred stack Hourly rate or project estimate Availability

  • Fixed price
  • Intermediate
  • Est. budget: $6,000.00

Summary Senior Full-Stack Developer with experience in JavaScript, python, nodeJS, php.

 We are building a multi-tenant AI-powered marketing operating system for SMBs. 

This is NOT an autonomous AI agent project.

 The platform uses deterministic workflow orchestration enhanced with AI services for:

* content generation,
* approvals,
* publishing,
* engagement analysis,
* brand-style learning,
* multi-platform social posting, * social media campaign.

 We need a senior engineer who understands production SaaS architecture, workflow reliability, API integrations, queues/retries, and AI integrations.

 REQUIRED EXPERIENCE:

* Multi-tenant SaaS applications
* Queue/retry systems
* Webhook reliability
* Idempotency / duplicate prevention
* API integrations (multiple social media platforms)
* Structured AI outputs (JSON schema validation)
* Background jobs / async workflows
* Production-grade backend architecture

 YOU SHOULD UNDERSTAND

* deterministic workflow orchestration,
* retries/backoff,
* distributed locks,
* tenant isolation,
* workflow state management,
* structured AI pipelines,
* cost governance,
* approval workflows.

 DO NOT APPLY IF YOUR EXPERIENCE IS MOSTLY:

* autonomous AI agents,
* chatbot-only projects,
* prompt engineering only,
* no backend SaaS experience.

 Project Scope:

* starting with 50 concurrent clients
* AI-generated social content
* approval-gated publishing
* multi-platform posting
* adaptive brand memory
* analytics + engagement tracking * paid social media campaigns

 To apply, please provide:

 1. Relevant SaaS/backend projects
 2. Experience with OpenAI structured outputs
3. Your preferred architecture approach for scalable workflow systems

  • 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
  • Expert
  • Est. time: 1 to 3 months, Less than 30 hrs/week

Job Description: We are seeking a highly experienced developer to convert a completed Figma design into a production-ready web application that can be embedded via iframe. This is an insurance quoting platform with a multi-step user flow, so performance, reliability, and clean architecture are critical. The application must support a seamless end-to-end experience from quote intake through binding and confirmation. This is a fast-turn, high-priority project with a strict 7-day deadline. Technical Scope: Convert Figma designs into a responsive, pixel-perfect front-end Build a modular, responsive, scalable front-end architecture Develop backend to call APIs to support quoting workflow Implement multi-step form flow with validation, state management, and error handling Enable iframe embedding with proper handling of: Responsive resizing within iframe PostMessage communication (if needed) Optimize performance (fast load times, minimal bundle size) Deploy to production Core Functionality Requirements: Multi-step quote intake form Data capture + storage (database or structured backend) Quote summary / confirmation page Ability to expand into bind + payment flow (if not fully implemented, structure should support it) Admin/back-end access to view submitted quotes (light dashboard or database access is acceptable) Technical Requirements: Strong experience with React / Next.js (or similar modern framework) Backend/API development experience (Node.js, Express, serverless functions, etc.) Experience building embedded applications (iframe environments) Understanding of CORS, security best practices, and session handling Experience with form-heavy applications and user workflow optimization Ability to structure code for scalability and future API integrations Nice to Have: Experience with insurance, fintech, or quoting systems Experience integrating third-party APIs (rating engines, payments, CRM) Project Details: Timeline: 7 days (strict, non-negotiable) Start: Immediate Budget: Flat fee – please include total cost in your proposal Communication & Process: Daily progress updates required Ability to collaborate quickly and make real-time adjustments Clear documentation and clean code expected Next Steps / Application Requirements: Please include the following in your proposal: Relevant project examples (especially embedded apps or iframe-based tools) Your proposed flat fee Confirmation you can meet the 7-day deadline Your availability over the next 7 days We would like to get on a call to discuss the project immediately upon reviewing your proposal.

  • 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
  • Expert
  • Est. time: 1 to 3 months, Less than 30 hrs/week

We are looking for an experienced Full Stack Developer to help build and enhance a custom business web application with admin dashboard functionality, user management, API integrations, database-driven features, and a modern responsive frontend. This is not a SaaS project. The application is a custom internal/business platform designed to improve operations, manage users, organize data, connect third-party services, and provide a clean dashboard experience for internal teams and business users. The ideal developer should be comfortable working across the full stack, from frontend UI development to backend API architecture, database structure, authentication, role-based access, third-party integrations, and deployment support. Key responsibilities include: • Build and improve custom web application features • Develop clean, responsive frontend interfaces • Create and enhance admin dashboard functionality • Implement user management and role-based access control • Build secure backend APIs and database-driven workflows • Connect third-party APIs and business tools • Create forms, filters, tables, reports, and dashboard views • Improve application performance and user experience • Work with authentication, authorization, and protected routes • Support deployment and final project handoff • Document completed work and technical decisions Required skills: • Full Stack Development • Web Application Development • React.js • Next.js • Node.js • Express.js • TypeScript • JavaScript • REST API Development • API Integration • Admin Dashboard Development • User Management • Role-Based Access Control • Database Management • PostgreSQL / MongoDB / MySQL • Responsive Web Design • Git / GitHub Nice to have: • Experience building business management platforms • Experience with internal tools and admin dashboards • Experience with CRM, payment, email, or third-party integrations • Experience with AWS, Docker, CI/CD, or deployment workflows • Strong understanding of clean, scalable application architecture • Ability to work independently and provide clear progress updates Project expectations: We are looking for someone who can take ownership of assigned features, understand business requirements, and deliver clean, maintainable, production-ready work. The right developer should be able to think beyond individual tasks and help suggest better ways to structure features, improve workflows, and create a more reliable application. This project may include ongoing work if the initial collaboration goes well, including additional features, dashboard improvements, API integrations, automation workflows, and long-term application enhancements. To apply, please include: - Your experience with custom web applications - Examples of admin dashboards or internal tools you have built - Your strongest frontend and backend stack - Your experience with API integrations - Your availability this week We are looking to start soon and would prefer someone who can communicate clearly, work independently, and deliver high-quality full stack development work.

Posted last month
  • Hourly
  • Expert
  • Est. time: 1 to 3 months, Less than 30 hrs/week

Servicing System The project involves building an integration between two cloud-based financial software platforms using their existing REST APIs. The Work: Review and map API endpoints between Abrigo (Sageworks) Loan Origination Software and a to-be-confirmed Loan Servicing platform Design and build the integration layer to sync loan data between the two systems (triggered or scheduled) Handle OAuth 2.0 authentication for both platforms Implement error handling, logging, and basic alerting Document the integration for handoff to the client's internal team Ideal Skills and Experience: Proven REST API integration work, ideally in fintech or financial services Experience with middleware or iPaaS tools (Azure Logic Apps, Make, Zapier, MuleSoft, or similar) OR custom integration development in Python, Node.js, or similar Familiarity with OAuth 2.0 and API authentication patterns Ability to read and work from Swagger/OpenAPI documentation Financial data handling experience a plus (loan records, borrower data, collateral) Strong communication -- you will interface with our team and potentially the end client Project Structure: Phase 1: Discovery and API assessment (paid, fixed price) Phase 2: Build and testing (milestone-based) Phase 3: Documentation and handoff

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