성능 튜닝 Jobs

I am in the final stretch of launching the Trade Not Aid mobile app and need experienced technical support to make sure everything goes live without a hitch. We need an equity partner to help us launch the Trade NOT App in Africa. Marketing and onboarding are already covered internally—what I need now is hands-on help in three critical areas: • Bug fixing & troubleshooting • Server and database management • App optimisation & performance tuning •Customer onboarding and support The codebase is feature-complete but still gathering last-minute edge-case bugs and performance spikes. Your mission is to stabilise the build, harden the back-end, and squeeze every millisecond you can from the front-end before we submit to the stores and flip the production...

I have an iOS fractal explorer written in Swift that uses Metal for GPU rendering. It already implements a deep-zoom Mandelbrot path based on perturbation and float-float style precision splitting (reference orbit + shader-side deltas). At moderate zoom levels the app behaves well, but beyond roughly 1e5 magnification the two Mandelbrot paths begin to fail in different ways: - The normal Mandelbrot renderer becomes visibly pixelated and resolution-limited. - The deep Mandelbrot renderer based on perturbation does not merely become pixelated; instead, it starts to lose fine structural detail. Regions that should contain rich micro-structure turn into flat, smoothed, or incorrect-looking areas, sometimes with visible tile artefacts. During continuous zooming and panning, performance also d...

We need to fix our Shopify ecommerce store that uses GemPages as the page builder. Load times are currently poor and we need an expert who can first pinpoint the root cause(s), then implement the fixes. This is a two-phase engagement - diagnosis before any work begins. We are not looking for generic speed tips. We need someone who can audit our specific setup, explain what is causing the slowdown in plain language, and execute a fix with measurable results.

I need a specialist to install and fully configure macOS on a machine that is currently blank. The job covers preparing the drive, running the installer, applying the latest updates, and making sure the system boots cleanly every time. Once the OS is live, I need the basic user account created with administrative rights, standard security settings enabled, and essential preferences (keyboard, trackpad, regional) tuned so the system is ready for everyday use. I will supply the hardware, the official macOS image, and any required licences; you bring the know-how to get everything running smoothly. A brief hand-over call or concise step-by-step summary at the end will confirm the setup and let me maintain the machine going forward.

I'm looking for an experienced SQL Server professional to provide robust application support for our desktop software. Key requirements: - Primary focus on data backup and recovery. - Ensure data integrity and availability. Ideal skills and experience: - Strong background in SQL Server management. - Expertise in data backup and recovery processes. - Experience with desktop application support. Please include relevant experience in your bids.

Project Title: Android App Development – Minimal Position Size Calculator (Kotlin + Jetpack Compose) Project Overview I am building a minimal Android trading utility that calculates position size based on risk management. The goal is to create a fast, clean, and reliable calculator used by traders before entering a trade. This is Version 1 of the app, so the scope is intentionally small. The focus is on excellent UX, performance, and code quality, not on feature quantity. Future versions will expand into a full trading journal, so the codebase should be clean and extensible. Key Requirements The app must be: Native Android Smooth and responsive Minimal and aesthetically clean Fully offline Privacy-first (no login, no tracking) Technology Requirements Please use: Kotlin...

I have a working ROS 1 codebase that now needs to run on ROS 2. During the port I also want to tighten the overall architecture. My top priorities are: • Better performance – specifically lower CPU / memory use and more robust error handling so that unexpected node failures are isolated instead of crashing the whole graph. • Enhanced modularity in the communication interfaces: each topic, service, and action layer should live in its own cleanly separated package so that future protocol or middleware swaps are painless. Scope of work 1. Migrate all existing ROS 1 nodes, launch files, and custom messages to ROS 2 (Foxy or later). 2. Replace catkin build system with colcon and update CI scripts accordingly. 3. Profile the new build, identify bottlenecks, and refactor...

I have a Wordpress website with Astra theme. Use Namecheap hosting, and have extremely poor load time. Used to be extremely fast, I changed to Cloudflare but that didn’t help at all.

I need an Azure Databricks specialist to re-architect my small batch-processing cluster (1-10 nodes) so it reliably runs on spot instances and trims our monthly bill. The objective is simple: reduce overall operational costs without sacrificing job completion time or data integrity. What I expect from you: • Analyse the current workspace, jobs and autoscaling behaviour. • Design and apply an optimal spot-instance strategy (instance mix, bid price, fault-tolerant settings, pool configuration, autoscaling rules). • Implement job-level tweaks such as task parallelism, cluster reuse and termination timing to prevent idle burn. • Set up cost-tracking dashboards or alerts so I can see savings in real time. • Deliver a short hand-off guide that explains the n...

Our production file-share runs on AlmaLinux with Samba and I’m seeing sluggish transfer speeds that vary wildly across mixed file types. I’ve ruled out basic network congestion, so the bottleneck is almost certainly in the current Samba configuration. Here’s what I need: • Pinpoint and eliminate any configuration errors that could be throttling throughput. • Tune and related system parameters for consistently fast transfers of both large binaries and many small documents (the workload is truly mixed). • Document each change, why it was made, and the performance delta observed after the adjustment. Acceptance criteria: after your tweaks, average transfer speeds for a representative mixed-file batch must meet or exceed gigabit-line expectations,...

I need my existing SolarWinds Orion environment tuned so the main dashboards instantly surface the data my team relies on: network performance, application-level metrics, and the key alerts and reports that stem from them. Right now the out-of-box views bury the most useful information; I want streamlined, role-based pages that load fast, highlight anomalies, and let us drill down without extra clicks. Scope • Build or modify SolarWinds dashboards that clearly present: – Network performance (latency, bandwidth, interface errors, etc.) – Application metrics – Corresponding alerts and related historical reports for quick context • Apply best-practice visual layouts (maps, summary widgets, custom SWQL queries) so each widget earns its screen space....

I run a production site on a Node.js + MongoDB stack and I’m looking to smooth out several pain-points in a single sprint. Performance is my top priority. The biggest bottleneck is database-side: query times keep climbing because of missing or poorly chosen indexes. I need someone who can audit the current collections, design the right compound indexes, and refactor slow aggregation pipelines. While you’re in there, I’d like basic search functionality so visitors can quickly surface records instead of scrolling through endless lists. Alongside the back-end tuning, there are a few infrastructure and UI tasks that will set the platform up for the next phase: • SSL certificate: generate or import the cert, configure it on the server, force HTTPS, and verify no mixed-...

My WordPress site already looks the way I want, but its Core Web Vitals are holding it back. I need a developer who can boost page-load speed and mobile responsiveness while leaving the front-end design intact. Your focus will be on all three key metrics—Largest Contentful Paint, First Input Delay and Cumulative Layout Shift. I am open to any behind-the-scenes solutions you feel are best: asset minification, critical CSS extraction, lazy-loading, server-level tweaks, plugin audits or even a clean rebuild on a lightweight framework, as long as the visual layout and content stay exactly the same. Please tell me how you plan to hit passing scores on PageSpeed Insights and how you will verify those results. If you have before-and-after examples or diagnostics from similar projects, inc...

PROJECT OVERVIEW We need a freelance engineer to help design and build core components of a prediction markets platform. The focus is correctness, consistency under load, and clean data models that support both UI and analytics. SCOPE OF WORK / RESPONSIBILITIES 1. Prediction market mechanics - YES/NO outcome tokens and implied probability mapping (price ≈ probability) - Liquidity/spreads via order book and/or AMM-style curve - Market lifecycle: open → trading → resolution → settlement - Resolution/oracle inputs, dispute windows, final payout logic 2. Backend + API development - Market discovery/browsing endpoints - Real-time pricing/market updates (WebSockets and/or streaming) - Order placement and cancellation - Idempotent order/trade submission (idempotency keys, re...

I need an experienced instructor who can take me through advanced-level administration of both Oracle Core databases and Oracle E-Business Suite. I already work daily with the technology; what I’m missing is a structured, in-depth programme that ties together best practices, real-world troubleshooting, and the latest features. Scope • Oracle Core DBA topics: upgrade paths (12c-19c), RAC configuration, Data Guard, RMAN backup/recovery, performance tuning, and diagnostic utilities. • Oracle E-Business Suite: architecture, cloning, patching with adop, concurrent manager tuning, and secure configuration. Training Style We will meet online in live, interactive sessions that mix white-board style explanations with hands-on labs I can reproduce on my own VM. I prefer short...

I need an experienced instructor who can take me through advanced-level administration of both Oracle Core databases and Oracle E-Business Suite. I already work daily with the technology; what I’m missing is a structured, in-depth programme that ties together best practices, real-world troubleshooting, and the latest features. Scope • Oracle Core DBA topics: upgrade paths (12c-19c), RAC configuration, Data Guard, RMAN backup/recovery, performance tuning, and diagnostic utilities. • Oracle E-Business Suite: architecture, cloning, patching with adop, concurrent manager tuning, and secure configuration. Training Style We will meet online in live, interactive sessions that mix white-board style explanations with hands-on labs I can reproduce on my own VM. I prefer short...

My WordPress site has become sluggish across the board—homepage, product pages, and even blog posts now take far too long to appear. After adding a few new plugins, Google PageSpeed Insights scores have dropped and the user experience is suffering. The job is straightforward: • Diagnose every bottleneck affecting the homepage, product pages, and blog posts. • Optimise code, images, database queries, and remove or replace any plugin that slows things down. • Configure caching, minification, lazy-loading, and the other best-practice speed tweaks that work for WordPress. • Deliver a clear before-and-after report from Google PageSpeed Insights (mobile and desktop) showing substantial improvement. Everything must remain fully functional once you are done, with ...

My site works, but it feels slow. I need an experienced developer to dig in, streamline the code, and cut the page-load time dramatically—loading speed is the top priority. While you are under the hood, I also want you to apply modern SEO best practices and be sure every improvement holds up on mobile, tablet, and desktop. If an idea boosts UX or search visibility without compromising speed, I am open to it. Here is what I expect: • A clear audit of current bottlenecks (caching, image weight, script order, server settings, etc.) • Concrete performance gains—sub-2-second first meaningful paint on the home page and solid Core Web Vitals that pass Google Lighthouse. • No broken layouts or lost functionality; the site must remain responsive across devices. &...

I have a live SwiftUI-based social app that already ships chat, video feeds, stories, live scenes, an in-app currency (stars) and subscription flow. The code follows MVVM, talks to a set of REST back-ends and is in the store today. What I need now is an experienced iOS engineer who can drop into the existing project, diagnose issues quickly and raise the overall quality bar. The immediate focus is three-fold: • First, do a thorough walkthrough of the current codebase so you understand our MVVM layers, networking helpers and IAP logic. • Next, remove bugs that are spiking our crash reports and tighten up general stability. • Finally, tune performance in the chat and media areas, then layer in a handful of small feature requests we already have queued for those modules....

I’m expanding our infrastructure team and need an India-based engineer who already lives and breathes Zabbix. This is a permanent role, not a short contract, so I’m looking for someone who can take full ownership of our monitoring platform and grow it with us. To hit the ground running you will: • Build and fine-tune end-to-end system monitoring on fresh and existing hosts. • Create intuitive, real-time dashboards that speak to both ops engineers and executives. • Craft actionable alert rules that work consistently across Linux, Windows and macOS environments. Only an expert level of Zabbix experience will work here; you should be comfortable architecting high-availability setups, optimizing proxies, and scripting advanced item prototypes without hand-hol...

I’m looking for ongoing, month-to-month care that keeps my WordPress site running fast and smoothly. My top priority is overall site performance, and the quickest win will come from tightening up server-side efficiency. Each month I’d like you to review performance metrics, implement back-end tweaks, and leave the front-end feeling effortless for visitors. Typical tasks include checking and updating plugins and themes, configuring caching layers, refining database queries, and fine-tuning any server-level settings that influence time-to-first-byte. I frequently monitor Google PageSpeed Insights and GTmetrix, so your work should show measurable gains there. You’re free to bring in tools like WP Rocket, Cloudflare, or custom Nginx/Apache rules—whatever best lifts rea...

I am looking for an experienced WordPress developer who can diagnose and fix performance issues on my website. My website has recently become very slow and takes a long time to load. I suspect there may be a file conflict, plugin conflict, or another technical issue causing the problem. The task includes: Identifying the root cause of the slow performance Fixing any plugin, theme, or file conflicts Optimizing the website to improve loading speed and overall performance This task is urgent, so I am looking for someone who can start immediately and resolve the issue quickly. . You will need to: • Profile the installation to uncover the bottleneck—whether that’s a rogue plugin, theme conflict, bloated queries, or an oversized asset. • Resolve the conflict or mis-conf...

Ich setze das Amalia Booking Tool produktiv ein und kämpfe aktuell mit zwei Hauptproblemen: spürbare Performance-Einbrüche sowie Störungen in der Benutzeroberfläche (Darstellungs­fehler, Buttons reagieren verzögert usw.). Ich brauche deshalb gezielte Fehlerbehebung und fortlaufenden Support durch eine Person, die Amalia aus der Praxis kennt. Dein Auftrag umfasst: • Analyse der Ladezeiten und Identifikation der Performance-Flaschenhälse • Behebung der erkannten Ursachen (z. B. Datenbank-Optimierung, Caching, Skript-Anpassungen) • Korrektur der UI-Probleme, sodass sämtliche Buchungsschritte wieder flüssig und intuitiv ablaufen • Abschluss-Tests und kurze Dokumentation der vorgenommenen Änderungen Ich stelle a...

I'm looking for an experienced SQL Server optimization specialist to improve performance on my SQL Server 2019 instance. Key Areas of Focus: - Query performance - Indexing strategies - Database design Ideal Skills and Experience: - In-depth knowledge of SQL Server 2019 - Proven track record in optimizing SQL Server databases - Strong analytical skills to identify bottlenecks - Expertise in indexing and query optimization techniques - Familiarity with database design best practices Please provide examples of previous work and success metrics.

I need a seasoned LUA developer who also speaks the language of audio engineering to extend the processing palette on Symetrix, RANE and Allen & Heath DSP platforms. The work sits squarely inside each manufacturer’s SDK, so the GUI framework is already included what we need from you is efficient signal-flow code that drops straight into the existing interface. Primary tasks • Write well-commented LUA modules for DSP • Add pitch and general frequency-management routines that can be chained with, or operate independently of, the above effects. • Optimise code and supply test files that we can provide feedback on Further details on request..

I’m looking for a Swift-savvy iOS developer who can turn my finished Google AI Studio design (supplied as TSX files) into a production-ready SwiftUI application that downloads video and audio from popular social networks. Here is the full scope of work: • SwiftUI build: translate every screen from the existing TSX design into clean, maintainable SwiftUI code, keeping the original look and feel intact and making sure the layout is 100 % iPhone-compatible, all the way back to the oldest iOS version still accepted by the App Store. • Background downloading: implement reliable, resumable downloads so users can leave the app while large files finish in the background. • No login flow: the app must work without any form of user authentication. • Local storage ...

Tengo una base de datos MySQL 5.7 (compatible con MariaDB) que alimenta una aplicación PHP / Laravel con tablas de millones de registros. El principal dolor que quiero resolver son las consultas lentas; necesito que el sistema responda con la agilidad que nuestros usuarios esperan. Busco a alguien con experiencia probada en entornos de alto volumen que analice a fondo la base, detecte cuellos de botella y me entregue soluciones listas para producción. Valoro el dominio de EXPLAIN, performance_schema y cualquier otra herramienta de análisis de consultas. Quiero trabajar específicamente en: • Optimización de consultas • Revisión de índices • Revisión y ajuste de la configuración de MySQL Entregables espera...

We are looking for an experienced GraphQL Engineer with strong skills in C# .NET and Microsoft Azure to help design and build scalable GraphQL APIs for distributed systems. The main focus of this role is GraphQL API ownership, backend development, and Azure cloud operations. Experience with Kafka or event-driven systems is a plus but not required. Responsibilities Design, develop, and maintain GraphQL APIs Define and evolve schemas, resolvers, and data models Integrate multiple backend services into a unified GraphQL layer Optimize API performance (N+1, batching, caching) Build backend services using C# .NET Deploy and operate applications on Microsoft Azure Collaborate with frontend teams consuming the API Requirements 5+ years of software engineering experience Strong experie...