Otimização de Desempenho Jobs

My SaaS-style web platform is already about 90 % complete; what I need now is a seasoned full-stack developer who excels at stepping into an existing codebase and driving it across the finish line. The top priority is thorough bug fixing and system testing. I expect a balanced mix of manual exploration and automated test suites so we can catch both edge-case glitches and any regressions before launch. Scope of work • Run a full test pass, document defects, and patch them. • Validate and, where needed, correct the usage-limit logic that controls free vs. paid quotas. • Polish the UI for mobile, tablet, and desktop breakpoints so every component renders cleanly and responsively. • Integrate the remaining ad slots and confirm the affiliate and withdrawal flows func...

My Supabase-backed web application needs a solid, automated maintenance routine. The core of the project is to keep the database healthy and fast, so I want complete coverage for three areas: regular backup and reliable recovery paths, performance tuning that actually shaves time off the heavier queries, and a clean workflow for applying Supabase/PostgreSQL updates and security patches without downtime. I already have the project running on Supabase; what’s missing is the living set of scripts, schedules, and monitoring rules that turn ad-hoc admin work into a predictable process. You’ll work directly in Supabase (and the underlying Postgres layer) and can bring in any complementary tooling—pg_dump, cron, pgBouncer, Grafana, or similar—as long as it integrates smoo...

We are looking for a Senior Embedded Software Engineer with strong experience in Telecom/O-RAN to work with us on a client project. The role involves development, optimization, and maintenance of embedded software components in a Linux environment, with a focus on performance, reliability, and clean code. Responsibilities: Design, develop, and maintain embedded C/C++ modules for telecom/O-RAN systems Work on Linux-based environments, including debugging, optimization, and performance tuning Integrate and test software components within existing telecom infrastructure Collaborate with our internal engineering team and client’s technical team Write clean, maintainable, and well-documented code Participate in code reviews and propose improvements Requirements: Strong hands-on e...

Hi, I am looking for an experienced DevOps / Linux server optimization expert for a LIVE high-traffic production website. Please apply only if you have real experience handling 50,000+ concurrent users, Cloudflare setups, and strong security hardening. IMPORTANT: The website is already LIVE and fully uploaded. CyberPanel is already installed and running. I only need optimization, scaling, and security improvements (NOT fresh installation). Current Infrastructure: • Dedicated main server: 64GB RAM, 1TB NVMe () • Offshore VPS: 1GB RAM (to be used as reverse proxy/security layer) • Domain provider: • Panel: CyberPanel + OpenLiteSpeed (already installed) • Laravel/PHP website (already live) • Need full integration My Requirements: PERFORMANCE: • Extreme...

We need a senior developer (freelancer or agency) to fix critical issues and deliver production-ready updates for a mobile-first app. Tech stack - Backend: ASP.NET Core Web API (C#) - Database: PostgreSQL - Realtime/chat: Firebase Firestore - Mobile: Flutter - Web/admin: React (nice-to-have) Must deliver (priority scope) - Password reset emails not delivered: diagnose provider/config/deliverability and make it reliable. - CV/PDF download shows “success” but file does not download/open: fix file storage + delivery flow (streaming or signed URL) and correct response headers. - Payment flow redirects/loops and the app cannot return after payment: fix return URL/deep link/callback handling and make the flow consistent. - Performance: Improve response times using pagination, index...

The goal of this project is to significantly improve the website’s loading speed and overall performance, ensuring a load time of under 3 seconds on both mobile and desktop devices. Faster website performance will enhance user experience, reduce bounce rate, and improve SEO rankings and conversion rates. Project Objectives • Achieve page load time below 3 seconds on mobile and desktop • Improve Google PageSpeed Insights, Core Web Vitals, and Lighthouse scores • Optimize website for better user experience and search engine performance • Ensure smooth performance without affecting design or functionality Scope of Work • Image optimization and next-gen format implementation (WebP/AVIF) • Minification of CSS, JavaScript, and HTML files • Browse...

My existing Power BI report pulls several large tables from Microsoft Dynamics 365 Business Central through the standard API. The model works, but the scheduled refresh now fails with frequent time-outs; reliability is my biggest concern. So far I have: • enabled incremental refresh on the largest tables • tuned a handful of queries • experimented with splitting data into smaller API calls None of these measures has eliminated the failure. I need an expert who can: 1. pinpoint the exact bottleneck within the current data model, gateway settings, or API calls 2. redesign the retrieval strategy so the report finishes every refresh window without timing out 3. leave me with a clean, documented PBIX (or dataflow) that follows best practice for query folding, pa...

Tengo un sistema de facturación electrónica para Ecuador escrito completamente en Java. Funciona bien a nivel de interfaz y cálculos, pero la lógica de negocio se vuelve lenta justamente en el paso de envío de la factura al SRI; allí aparecen cuellos de botella que provocan demoras y, en ocasiones, time-outs. Necesito que revises a fondo ese módulo, identifiques la causa del problema de rendimiento y entregues una solución limpia que mantenga compatibilidad con los requisitos del SRI. Me interesa especialmente: • Perfilado y diagnóstico claro del código existente. • Refactor o ajustes puntuales que mejoren la velocidad de conexión y respuesta. • Pruebas unitarias y de integración que de...

I’m refining an existing EdTech platform whose backend is built on Laravel and whose user-facing layer runs on Angular. I need a full-stack developer (7+ years of experience ) who can slip into the current codebase, resolve a handful of blocking bugs, and then roll straight into feature work and performance tuning. Ability to convert functional requirements into technical requirements, familiarity with API integrations, AI and automations is a must have. Deliverables • Fix the critical issues • Implement the new features and enhancements • Provide ongoing support Weekly commitment of 20hours/week.

The codebase is a React front end that relies on Supabase for authentication, data storage, and real-time updates. A series of stubborn bugs have crept in—misfired auth callbacks, occasional data mismatches after writes, and visibly broken UI states when the websocket drops. Your first mission is to isolate and eliminate those issues so the app runs cleanly, with no console errors and all existing unit tests green. Once the core bugs are gone, I’d like a quick pass on the database schema (a couple of tables need index tweaks and a foreign-key adjustment) and help preparing a production deployment workflow. The stack is already wired to GitHub; I deploy to Vercel, but I’m open to your preferred routine as long as rollbacks are painless. Everything needs to be wrapped up ...

I need Cloudflare configured so my site automatically blocks malicious or nuisance traffic rather than legitimate visitors. The immediate headache is spam-driven form submissions and crawlers hammering the same pages hundreds of times a minute, so the goal is to stop those two behaviours without slowing genuine users. I already have a Cloudflare account in place; what I’m missing are the right firewall rules, bot management settings, and rate-limiting thresholds. You’ll review my current WAF/Bot Management setup, identify the loopholes that allow automated form posts and excessive page requests, then implement Cloudflare features such as Bot Fight Mode, custom WAF rules, Challenge or Turnstile for forms, and sensible request limits. Deliverables • Documented list of ...

I have a working script that only finishes when it can grab more than 100 GB of RAM. Right now I keep it online by renting several VPS instances, which already drains well over $500 every month and still doesn’t let me scale efficiently when workload spikes. I’m absolutely open to revisiting the way the program uses resources. What I need first is a sharp mind that can study the current setup, pinpoint where memory is wasted, and outline a smarter resource-management strategy. Whether the answer ends up being sharding the job across nodes, streaming data in smaller chunks, redesigning the in-memory structures, or off-loading parts to a managed cloud service, I’m ready to explore it—as long as we end up with a solution that scales without blowing up the budget. ...

I already have a functioning codebase that reaches Amazon endpoints, but I now need to harden and streamline the network layer. The top priority is Optimized Proxy Deployment: spinning up several proxy servers on AWS, each tied to its own Elastic IP and placed in regions nearest to the Amazon infrastructure we query. The target footprint is roughly 100 static IPs—half reserved for one domain and half kept in a common pool. Every outbound call must rotate to the next address so no two consecutive requests share the same IP, keeping average round-trip latency between 150 ms and 300 ms. When Amazon responds with a 429, the system should swap both the IP and candidateId instantly, with zero observable delay to the application. A second goal is lowering the overhead around our creat...

I’ve just purchased a Windows-based desktop for my apartment in the West Village and need a technician who can handle the full hand-over from my aging machine to the new one—about 200 MB of data in total. The job is straightforward but I want it done right: transfer all of my documents, personal files, and any system settings or preferences that will make the new PC feel instantly familiar. Because I’m not locked into a particular migration tool, I’ll rely on your recommendation for the most reliable software or direct-connect method. Once the copy is complete I’d like you to walk me through a quick check so we can confirm everything opens correctly and that user profiles, desktop layout, and network settings have carried over. Deliverables • Unbox or...

My VPS on Hostinger’s KVM line has started to crawl and I can’t pinpoint why. I’m looking for someone who already knows their way around the Hostinger panel, KVM virtualization, and typical Linux performance-tuning tools to jump in, diagnose the bottlenecks, and restore normal speed. Scope • This is strictly troubleshooting and ongoing maintenance; the server is already live. • The main pain point is degraded performance—slow response times under even light traffic. No connection drops or software errors have shown up, only sluggishness. • I need action right away, so please be ready to begin as soon as access is granted. Deliverables - A clear diagnosis of the root cause (CPU, I/O, memory, network, misconfiguration, etc.). - Applied fixes...

Title: Expert DevOps Needed: Ultra-Fast Laravel Reverse Proxy Setup for 50k Concurrent Users (From Scratch) Description: I am looking for an elite Server Administrator / DevOps Engineer to completely wipe my current server infrastructure and build a highly secure, lightning-fast architecture from ZERO. My project is a high-traffic Laravel-based crypto/investment platform. There should be absolutely zero delay, no lag, and no loading issues. The setup MUST handle 50,000 active concurrent users smoothly. What I have: * Main Server: 64GB RAM Dedicated Server (Offshore/Bulletproof). * Frontend VPS: To be used as a Reverse Proxy to hide the Main Server IP. * Domain: Registered on Njalla (Cloudflare DNS). What You Need To Do (From Scratch): * Complete Wipeout: Delete the entire current OS/Setup ...

I'm seeking an experienced WordPress developer to migrate my IDX Broker site. The main goal is to improve website performance, specifically page load speed. Key issues include slow loading of images and media. Ideal Skills and Experience: - Expertise in WordPress and IDX Broker - Strong knowledge of website performance optimization - Experience with image and media loading speed improvements - Familiarity with SEO best practices to maintain or improve rankings during migration - Proven track record of successful migrations with minimal downtime Please share relevant experience and approach.

## **Project Title: Senior WordPress Performance Engineer – WPresidence Theme Optimization** ### **Project Overview** We are seeking a highly skilled WordPress Performance Specialist to optimize a real estate website built on the **WPresidence theme**, hosted on **WP Engine**, and utilizing **Cloudflare**. Our primary challenge is a high **Time to First Byte (TTFB)** and sub-optimal mobile performance. We are looking for deep, manual optimization—not just the installation of "all-in-one" speed plugins. You must be comfortable working within the restricted environment of WP Engine (where many caching plugins are disallowed) and configuring Cloudflare for maximum edge performance. --- ### **Technical Environment** * **Theme:** WPresidence (Heavy real estate theme ...

I already have a working Python-based OCR pipeline that converts Tamil voter-list PDFs into Excel, then pushes the sheets to S3 for further processing. The PDFs are purely image-based. When I run the job in parallel on AWS today, the script sometimes skips entire voter entries and often mangles door numbers and other data. I need these two pain-points eliminated and the whole flow hardened so it can run unattended across hundreds of constituency files. Optimising to the least cost of Extraction in AWS bill is also required. Your task is to review and refactor the existing code, tune the Tamil OCR (Tesseract, AWS Textract, or any library you find more accurate), modify the parsing logic, and make sure parallel execution on my current ECS setup completes without a single missed record. Onc...

I have a live mobile app on both iOS and Android that needs a full refresh. My priorities span three areas at once: • Sharpen the User Interface so the screens feel modern, consistent and intuitive. • Optimise Performance—faster load times, smoother animations, lower memory use. • Add a short list of new features that I will share once you have reviewed the current build. I’ll give you access to the existing repositories and an overview of the current architecture. After an initial code and design audit, I’ll need a clear action plan with milestones, then iterative builds I can test on TestFlight and internal Android tracks. Deliverables 1. Updated source code with in-line comments and a brief change log. 2. New UI assets integrated and pixel...

My desktop and laptop have both become sluggish and unstable. Outlook is now crashing several times a day and I suspect the 30,000-message mailbox is the chief culprit. I want to bring that mailbox back under control by archiving older threads, deleting anything truly unnecessary, and then re-optimising Outlook so it launches and searches quickly again. While we are at it, both machines have hit their disk-space limits. Google Drive and OneDrive are syncing far more files than I actually need offline, and the growing local cache is eating the last gigabytes on each device. I’d like you to review the sync configuration for both platforms at the same time, ensure only the essential folders stay local, and confirm that SharePoint libraries linked through OneDrive are also syncing prope...

Title: Expert DevOps Needed: Ultra-Fast Laravel Reverse Proxy Setup for 50k Concurrent Users (From Scratch) Description: I am looking for an elite Server Administrator / DevOps Engineer to completely wipe my current server infrastructure and build a highly secure, lightning-fast architecture from ZERO. My project is a high-traffic Laravel-based crypto/investment platform. There should be absolutely zero delay, no lag, and no loading issues. The setup MUST handle 50,000 active concurrent users smoothly. What I have: * Main Server: 64GB RAM Dedicated Server (Offshore/Bulletproof). * Frontend VPS: To be used as a Reverse Proxy to hide the Main Server IP. * Domain: Registered on Njalla (Cloudflare DNS). What You Need To Do (From Scratch): * Complete Wipeout: Delete the entire current OS/Se...

I’m starting a fresh Minecraft Survival server and already have the hosting and premium plugins covered on my end. What I need now is an experienced hand to turn this blank canvas into a polished, one-of-a-kind world players will remember. The work revolves around full configuration and fine-tuning: installing the chosen plugins, balancing them so gameplay feels natural, setting up permissions, economy, crates, ranks, and any quality-of-life add-ons that elevate a Survival experience. I’m looking for creative ideas too—custom messages, unique spawn layout guidance, maybe a few bespoke scripts or configurations that differentiate us from every other “copy-paste” server. Performance matters. I’d like you to optimize the backend (paper/spigot/purpur, your...

I need a skilled WordPress developer to clean up my site. I am getting a 500 error whenever I try to save updates to my homepage. Tasks include: - Backup site before cleanup - Remove unused plugins and themes - Clean up the database - Install or update security plugins Ideal skills and experience: - Expertise in WordPress - Experience with site backup and restoration - Knowledge of database optimization - Familiarity with security plugins and best practices Please ensure the site is functional and secure post-cleanup.

Senior Laravel Developer Needed for Gaming API Development (Complex Business Logic) We are looking for an experienced PHP Laravel developer to build a robust Gaming API system involving complex business logic, statistical computations, and dynamic result generation. This is a backend-heavy project requiring strong analytical skills and experience implementing structured business rules. The frontend will be developed in React JS, and the database will be MySQL. Technology Stack (Mandatory) : - Backend: PHP (Laravel Framework) Frontend: React JS (API consumption only) Database: MySQL API Type: RESTful APIs Architecture: Clean, scalable, and well-documented Scope of Work : - The developer will be responsible for: Designing and developing secure Gaming APIs in Laravel Implementing...

I have an existing web application built using an AI website builder (Creo). The UI and overall user flow are already designed, and I have the full exported source code and GitHub repository. However, several core features are not functioning correctly and need to be debugged, completed, and made production ready. ​ I am looking for an experienced full stack web developer who can: Review the current codebase and architecture (front end and back end). Fix broken or incomplete functionality so the existing flows work end-to-end. Implement missing logic for key features (forms, data handling, API calls, etc.). Improve stability, performance, and error handling. Set up a clean Git workflow and help prepare the app to be easily maintained going forward. ​ Tech stack / skills: Strong Jav...

I have a live mobile app on both iOS and Android that needs a full refresh. My priorities span three areas at once: • Sharpen the User Interface so the screens feel modern, consistent and intuitive. • Optimise Performance—faster load times, smoother animations, lower memory use. • Add a short list of new features that I will share once you have reviewed the current build. I’ll give you access to the existing repositories and an overview of the current architecture. After an initial code and design audit, I’ll need a clear action plan with milestones, then iterative builds I can test on TestFlight and internal Android tracks. Deliverables 1. Updated source code with in-line comments and a brief change log. 2. New UI assets integrated and pixel...

We are a small software development team looking for an experienced Azure Administrator (AZ-104 certified) who can support us on a low-hours monthly retainer basis. The primary requirement is to associate your active AZ-104 certification with our Microsoft Partner tenant and be available for occasional architecture and infrastructure questions. You should be comfortable working in a mostly advisory role, where some months might be quiet and other months we may reach out with a few days’ notice for help. Responsibilities: Associate your current AZ-104 (Azure Administrator Associate) certification with our Microsoft Partner tenant Provide ad-hoc guidance on: Azure RBAC, permissions, and access control Virtual networks, subnets, NSGs, private endpoints, and related networking Bes...

My Mikrotik-based network has started dropping connections throughout the day. Speeds are fine when the link is up, but users complain about frequent disconnections that force them to reconnect to services. I need an expert who already works comfortably with RouterOS, WinBox and basic CLI to dive in, locate the root cause and tune the configuration for consistent performance. Scope of work • Analyse current RouterOS settings (queues, bridges, firewall, wireless, CAPsMAN if present) • Isolate the trigger behind the disconnections—whether it is interface flapping, DHCP lease issues, NAT rules, routing loops, or CPU/RAM spikes • Optimise performance parameters without disrupting existing production traffic • Provide a brief hand-over note summarising the cha...

My Mikrotik-based network has started dropping connections throughout the day. Speeds are fine when the link is up, but users complain about frequent disconnections that force them to reconnect to services. I need an expert who already works comfortably with RouterOS, WinBox and basic CLI to dive in, locate the root cause and tune the configuration for consistent performance. Scope of work • Analyse current RouterOS settings (queues, bridges, firewall, wireless, CAPsMAN if present) • Isolate the trigger behind the disconnections—whether it is interface flapping, DHCP lease issues, NAT rules, routing loops, or CPU/RAM spikes • Optimise performance parameters without disrupting existing production traffic • Provide a brief hand-over note summarising the cha...

I’m looking to give my existing FiveM server a thorough tune-up. The main goal is to squeeze out every bit of performance while cleaning up and updating any scripts that have fallen behind. Here is what I need: • Performance tuning – reduce latency, smooth out tick rate issues, and identify any heavy resources that can be refactored or removed. • Database optimization – review and streamline MySQL queries, indexes, and connections so server calls are lightning-fast under load. • Script audit & updates – we’ll jump in together, catalogue every resource, and decide which gameplay, admin, or economy scripts need version bumps or rewrites. If something is broken or inefficient, I want to know the fix or replacement. You’re free to...

My WordPress site is still painfully slow to load even though I already have WP Rocket installed and active. Page-load speed is the single, pressing issue I need resolved. I suspect that my current WP Rocket configuration isn’t fully optimized; however, I’m open to any complementary tweaks or lightweight alternatives that work well alongside it. Here’s the situation: • Current tool: WP Rocket only • Main pain point: slow website load time despite the plugin What I need from you: 1. Audit my existing WP Rocket settings, server environment and theme/plugin stack. 2. Apply best-practice adjustments inside WP Rocket—caching rules, preloading, file optimization, database cleanup, CDN hooks, and any exclusions that eliminate conflicts. 3. Implement a...

My Shopify store is dragging its feet and Google PageSpeed Insights confirms the issue: the theme’s HTML / CSS files have become far too heavy. I’d like an experienced Shopify developer to audit the codebase, remove bloat, and implement best-practice performance tweaks so pages render quickly on both desktop and mobile. Key goals • Slim down or refactor large HTML and CSS files without breaking design or functionality • Minify and consolidate remaining assets, enabling compression, caching, and critical-CSS loading • Reduce or replace any theme features that secretly inject bulky code or unused styles • Deliver a clear before-and-after PageSpeed Insights report so I can measure the gains I already monitor performance through Google PageSpeed Insigh...

Por favor, Cadastre-se ou Faça Login para ver os detalhes.

My WordPress site is dragging on shared hosting and I have not attempted any kind of optimisation yet—no plugins, no code tweaks, nothing. I need a specialist who can take it from sluggish to snappy without asking me to upgrade the server first. What I expect • A quick audit using tools such as Google PageSpeed Insights, GTmetrix or similar so we have a clear “before” benchmark. • Smart, lightweight fixes—caching, image compression, script and style minification, database tidy-up, lazy loading, CDN setup if it helps—implemented directly on the site. • Clear documentation of every change so I can maintain the gains. Acceptance criteria • A measurable improvement in core web vitals and an overall page-load time that feels fast on typica...

I am seeking an experienced Salesforce B2B and B2C Commerce Developer to design, develop, and implement scalable Salesforce Commerce and Experience Cloud solutions for global enterprise clients. This is a remote contract role requiring availability during Eastern Standard Time (US 8am–5pm). Responsibilities Design and develop solutions using Salesforce B2B Commerce Cloud and B2C Commerce Cloud (SFCC) Build scalable, high-performing storefronts Develop custom components, controllers, pipelines, cartridges, and integrations Implement business logic using Apex, JavaScript, and Salesforce APIs Configure and customize Salesforce Experience Cloud for B2B portals Integrate Salesforce Commerce with external systems (ERP, OMS, Payment, CRM, etc.) Ensure performance, scalability, and ...