Need Senior Back-End Engineer
3000 USDResponsibilities
Design, develop, and optimize the architecture of core back-end systems, ensuring high concurrency, stability, and scalability.
Participate in Web3 feature development, including on-chain contract interactions, blockchain data storage, and retrieval.
Write, deploy, and maintain Solidity smart contracts, implementing business logic on Tron and other blockchain networks.
Collaborate closely with the front-end team to design and integrate APIs.
Handle casino-related API integrations, data processing, and security measures.
Develop and optimize systems for futures trading and cryptocurrency exchanges, ensuring security and operational stability.
Write high-quality, maintainable, and scalable code, and maintain related technical documentation.
Requirements
Proficient in Node.js, Go, or PHP, with a solid back-end development foundation.
Strong expertise in Web3 development, proficient in Solidity smart contract programming and optimization, with in-depth knowledge of Tron chain development.
Experience in Web3 wallet development is a plus.
Prior experience integrating casino APIs or developing gaming/betting systems is preferred.
Experience in futures trading or cryptocurrency exchange development is preferred.
Familiar with designing and optimizing systems for high concurrency and large-scale data, with knowledge of security best practices.
Strong sense of code quality, teamwork, and responsibility.
Nice-to-Haves
Open-source contributions or a portfolio of relevant work.
Familiarity with other major blockchains (Ethereum, BSC, Polygon, etc.) and cross-chain technologies.
Experience with DevOps, CI/CD, and containerized deployment.
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30 days2900 USD
146 30 days2900 USDHi, I am Blockchain Engineer with 10+ years of experience with a lot of technical expertise. I have an excellent experience. Let’s discuss the details?
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7 days3000 USD
2923 24 0 7 days3000 USDHello! I have the necessary stack and am ready to get to work, we can discuss the details in private messages.
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14 days3000 USD
217 14 days3000 USDGood day. You have an interesting task. I have extensive experience in writing the backend part using Nodejs + MongoDB. I am adding examples of projects that have a backend part: Here is an example of a car rental and booking site with registration, login, and interactive logic: https://track-rental-auth-react-ts.vercel.app/ or this one (with backend): https://water-tracker.online/; As I mentioned separately in my review, I also write FRONTEND (but that requires separate time and payment). Message me privately and we will agree on everything.
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31 days3000 USD
162 31 days3000 USDHello.
I am interested in your project. I am confident that I can deliver effective and high-quality work that meets your requirements and expectations. I have over 8 years of experience.
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11 days3000 USD
7575 13 0 11 days3000 USDHello!
I specialize in creating and supporting complex frontend projects with a focus on pixel-perfect layouts based on Figma, modular architecture, and high performance. Experience with Next.js, Tailwind CSS, Canvas, complex animations, and UI systems.
I can develop interactive graphics and visualizations from scratch, optimizing them for any devices. I am used to working closely with designers and backend developers to bring projects to perfection.
I am ready to apply my experience to make your product look and perform at the level of top solutions.
git: https://github.com/onyx144
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30 days3000 USD
573 9 0 30 days3000 USDNodejs backend developer. Hosting server administrator. DevOps. Message me privately, we will discuss in more detail.
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15 days3000 USD
2161 4 2 15 days3000 USD👋Welcome!
We are Skillwave Global LLP — a team from the United Kingdom that helps businesses launch effective digital products: from websites and online stores to complex systems.
📈We approach each task individually — we create not just a beautiful website, but a tool that works for results: attracting customers, selling, and building trust.
✅What we offer:
• Full web development (Frontend / Backend / WordPress / CMS)
• UI/UX design in Figma with a focus on conversions
• Fast loading, responsiveness, SEO — by default
… • Support and development of the project after launch
💼We work transparently, officially, and results-oriented.
Ready to discuss your project and propose a concept in the coming days!
🙌Here are our works and reviews on them, you will learn more in the presentation!
Freelancehunt
Guangzhou