We are looking for an experienced Java Spring Boot developer to optimize WebSocket connections in our REST API. The goal is to handle up to 5000 concurrent users, with connections scaling up every second.
Project Requirements:
> Implement and optimize WebSocket connections for real-time communication. > Ensure efficient handling of up to 5000 concurrent users. > Optimize performance and scalability to industry standards. > Optimize API services for real-time message broadcasting to all connected users. > Provide comprehensive documentation for the implementation. > Offer maintenance support post-completion.
Technology Stack: > Backend: Java 17, Spring Boot > API: REST API > WebSockets: Persistent connection handling
Business Cards & Email Signatures Design Category: Adobe Illustrator, Adobe InDesign, Branding, Business Card Design, Graphic Design, Print Design, Stationery Design, Web Design Budget: $250 - $750 NZD
16-Mar-2026 23:04 GMT
Modern Large Framed Artwork Category: 2D Drawing, 2D Layout, Art Consulting, Art Installation, Creative Design, Illustration, Painting Budget: $250 - $750 USD
16-Mar-2026 23:04 GMT
Freelance Video Maker – Instagram Reels & TikTok Category: After Effects, Cinematography, Social Media Marketing, Video Editing, Video Post Editing, Video Production, Video Services, Videography Budget: €8 - €30 EUR
Arduino Control with Python Category: Arduino, Automation, Circuit Design, Electronics, Embedded Systems, Prototyping, Python, Robotics, Signal Processing, Software Architecture Budget: $750 - $1500 USD
16-Mar-2026 22:53 GMT
Refining UX/UI for Live Web Platform Category: Figma, Graphic Design, SaaS, UI / User Interface, User Interface / IA, UX / User Experience, Web Design Budget: $200 - $300 USD
Personal Digital Presence Setup -- 2 Category: Animation, Content Management System (CMS), Graphic Design, User Interface / IA, Web Design, Web Development, WordPress Budget: $15 - $25 USD