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I’m building a production-grade mempool service on EVM chains and need a partner who has already shipped similar, high-throughput Web3 products. The stack is fixed: [login to view URL] on the front end, Web3 libraries for chain interaction, a SQL database for persistence, and direct hooks into Noves API plus Speedy Nodes for fast, reliable RPC access. Core feature set • Real-time data tracking: the app must capture pending transactions, decode them with Noves, enrich them, and push live updates to the UI with sub-second latency. • Stable SQL schema: tables for raw mempool events, decoded payloads, user watchlists, and audit logs. The schema should be migration-ready. • Seamless Noves / Speedy Nodes integration: environment-driven configuration, automatic fail-over handling, and rate-limit awareness baked in. Deliverables 1. Source-controlled [login to view URL] project with typed Web3 utilities and clean component structure. 2. SQL migration scripts and seed data. 3. Integration layer for Noves API and Speedy Nodes, wrapped in concise services. 4. README covering local setup, deployment, and monitoring hooks. 5. Short loom (or similar) walkthrough demonstrating real-time tracking in action. Acceptance criteria • First page load returns live mempool entries within two seconds. • Removing network or API keys instantly falls back or displays graceful errors—no hard crashes. • All code is human-written; autogenerated or copied snippets are rejected. • Unit tests cover critical parsing and database routines (80 %+). If your background includes deep EVM work, high-frequency data systems, and you can stand behind every line of code, let’s talk details and timelines. Current : [login to view URL] [login to view URL]
Project ID: 40402310
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109 freelancers are bidding on average $33 USD/hour for this job

Hi, This is Elias from Miami. I checked your project description and understand you’re looking to build a production-grade mempool service on EVM chains. This service will be crucial for managing transactions efficiently within the blockchain ecosystem. I’ve worked on several similar platforms and understand the key technical challenges involved. My experience with SQL and API integration will ensure a robust and scalable solution. I’d be happy to go through the details and suggest the best technical approach. Here’s how I plan to tackle the project: I will start by analyzing the specific requirements for the mempool service, design the database structure, and then integrate the necessary APIs for seamless operation. I have a few questions to get a better understanding: Q1 – What specific EVM chains are you targeting for this mempool service? Q2 – Are there any existing systems that this service needs to integrate with? Q3 – What user roles do you envision for this service, and will there be a need for user authentication? Looking forward to hearing from you.
$50 USD in 10 days
7.9
7.9

With over a decade of experience in high-scale systems and EVM development, I understand your need to build a production-grade mempool service on EVM chains. My background in handling high-complexity projects, such as scaling for over 1 million users, directly applies to the challenges of real-time data tracking and stable SQL schema requirements for your project. A strategic insight for ensuring scalability is to implement environment-driven configuration and automatic fail-over handling, which I have successfully utilized in past projects. For instance, I have integrated similar services with a sub-second latency for real-time tracking, showcasing my ability to handle high-frequency data systems effectively. I invite you to discuss the roadmap further and explore how I can contribute to the success of your EVM Mempool Web3 Development project. I am eager to bring my expertise in EVM work and Web3 development to the table to ensure the timely delivery of quality results.
$40 USD in 15 days
7.5
7.5

Hello Greetings, After reviewing your project description, I am confident and excited to work on this project for you. I have some crucial points and questions to clarify. Please leave a message in the chat to discuss this, and I can share my recent work that is similar to your requirements. I am excited to hear from you soon. Thank you!
$38 USD in 40 days
4.7
4.7

Hello! This is James from Hollywood, and I’m excited about the opportunity to partner with you on your EVM mempool service project. I’ve carefully read your project description and fully grasp the requirement for a production-grade solution on EVM chains. With over 15 years of experience in software development, including extensive work with SQL, API integration, and blockchain technologies, I’m confident I can deliver a solution that meets your needs. Could you please clarify the following questions to help me better understand the project? 1. What specific EVM chains are you targeting for the mempool service? 2. Are there any existing systems or APIs you plan to integrate with? To ensure the project's success, I suggest we start with defining the architecture, followed by database design, and then proceed to API integration and testing. My approach combines technical expertise with a focus on practical, maintainable solutions. Let’s connect to discuss how I can contribute to your project! Looking forward to your response.
$50 USD in 10 days
4.7
4.7

Hi, With extensive experience in high-throughput Web3 development and building real-time mempool services on EVM chains, I am confident in delivering a production-grade solution tailored to your stack. I will ensure sub-second latency, robust API integrations, and a scalable SQL schema that aligns with your core features. What is your preferred timeline for deploying the first working prototype and conducting user testing? Thanks, Juan Aponte
$25 USD in 44 days
3.3
3.3

As a web and software developer who has built a range of digital solutions for various industries and clients around the world, I bring a skillset encompassing much of what you're looking for. Through my work, I've gained considerable experience in EVM systems, high-frequency data management, and the Web3 stack. My commitment to quality craftsmanship and efficient yet reliable code aligns perfectly with your requirements of stable SQL schema, real-time data tracking, and seamless API integration. I focus on creating robust systems that can withstand heavy usage while also delivering accurate data quickly to ensure minimal latency on user interfaces. By choosing me for this project, you'd not only secure quality product development but a collaborative partner who strives for long-term success. My approach revolves around understanding business goals - not just technical requirements - which means I'm dedicated to not just writing code but delivering value.
$30 USD in 40 days
3.4
3.4

Hello Here's a 49-word proposal: "I specialize in EVM mempool development, architecting production-grade services demanding real-time data processing and high reliability. My expertise ensures your mempool handles throughput, latency, and MEV considerations effectively. Let's discuss how my web3 development skills can accelerate your robust, scalable mempool service, delivering the critical insights you need." Giáp Văn Hưng
$32 USD in 7 days
3.3
3.3

Hello, The main technical challenge in building a production-grade mempool service on EVM chains is ensuring real-time data tracking of pending transactions with sub-second latency. This is critical because delays can lead to missed opportunities or outdated information for users, impacting the service's reliability. To mitigate this risk, a robust caching mechanism could be employed to handle spikes in transaction volume while maintaining low latency. Your project requires a partner who understands the intricacies of high-throughput Web3 products, particularly in the context of SQL schema design and API integration. My experience in developing scalable Web3 applications aligns well with your needs, particularly in terms of establishing efficient SQL schemas and seamless API connections. In previous projects, I have focused on creating high-performance applications that involve real-time data processing and have successfully implemented SQL databases for managing complex event data. By ensuring that the SQL schema was optimized for read and write operations, I achieved significant improvements in data retrieval times, which is essential for maintaining low latency in transaction tracking. My approach would involve an initial discovery phase to define the requirements and identify potential challenges, followed by iterative development cycles to implement the SQL schema, API integration, and real-time tracking features. I would prioritize unit testing to ensure that critical routines meet the 80% coverage requirement while maintaining graceful error handling throughout the process. What are your key priorities regarding the SQL schema design and API integration? Do you have specific latency benchmarks or performance metrics that you're aiming for beyond the two-second threshold? Thank you, Shaun
$30 USD in 7 days
1.5
1.5

Hello, I won’t go into my previous projects, you’ve probably seen plenty of similar proposals, and they tend to feel repetitive. Instead, I’d like to share how I approach my work. I understand that deciding to post a job isn’t easy. Every dollar comes from your time and effort, and I respect that. If a developer doesn’t treat a project like their own, it’s unlikely to succeed. That’s exactly how I work. I take responsibility, I care about the outcome, and I do my best to deliver something you’ll be happy with. Yurii
$38 USD in 40 days
0.0
0.0

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