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35 USD / hourMechanical Design Engineer with over 7 years of experience in product development, CAD modeling, and engineering analysis. Skilled in designing manufacturable components for consumer products, industrial equipment, and electromechanical systems. Proficient in SolidWorks, Fusion 360, and other CAD tools for creating production-ready models, assemblies, and technical drawings. Experienced in sheet metal design, plastic parts, 3D printing (FDM), and DFM principles to ensure efficient manufacturing and cost-effective production. Adept at translating concepts and sketches into functional, optimized designs through iterative prototyping and engineering validation. Known for delivering precise, practical engineering solutions while maintaining strong attention to detail, aesthetics, and real-world manufacturability.Hire iamhamzazaki
15 USD / hourWe are proud to be among the ā top 1% on Freelancer.comā, recognized for our earnings and positive reviews. ā Corporate Value Proposition ⬠Patience with Clients ⬠Diversified Industry Portfolio ⬠Dedication to Client's Vision & Empowerment ⬠Proactive in Suggesting Best Practice Solutions ⬠Prioritizes Personal Privacy and Data Security ⬠Customer-Centric, Collaborative and Communicative Approach ā Our Achievements ⬠20+ Years of Experience ⬠350+ Talented IT Professionals ⬠3000+ Successful Projects ⬠Served Clients in 50+ Countries ā Our Services ⬠Custom Software Development ⬠Web & Mobile Application Development ⬠QA & Testing ⬠Support & Maintenance ⬠Staff Augmentation ⬠Cloud Services & DevOps ⬠AI/ ML ā About Narola Infotech Solutions LLP We stay ahead with the latest tools, frameworks, and programming languages to deliver high-performance, user-friendly, and scalable applications. Whether it's feature-rich websites, robust mobile applications, or comprehensive digital solutions, we turn your ideas into reality with advanced designing and QA services. Our commitment to exceptional customer service sets us apart. We prioritize clear communication, collaboration, and understanding your goals. Our team works closely with each client, offering valuable insights, expert guidance, and continuous support throughout the development process and beyond. Partnering with Narola Infotech means gaining a reliable and strategic technology partner committed to driving your business forward. We strive to exceed expectations, deliver exceptional quality, and ensure timely project completion within budget. Our goal is to help businesses thrive in the digital landscape with our expertise and impactful solutions. We have worked with notable clients such as CGI, L&T, Infosys, Biocon, TVSNext, and many others. ā Our Expertise We excel in multi-layered software designing, development, maintenance, and enhancement using OOP concepts, multi-threading, and collection framework with comprehensive QA testing. ā Tech Stack ⬠Frontend: Wireframe, UI/UX, PSD, Bootstrap, JavaScript, AngularJS, ReactJS, VueJS ⬠Backend: ASP.NET, C#, Java, PHP, WordPress, Shopify, NodeJS, Python, Django ⬠Mobile: iOS & Android, Objective-C & Java SDK, Swift, React Native, Flutter ⬠Other: MS Dynamics 365, Microsoft, Power Platform, Salesforce, DevOps, AWS, Azure, Big Data, Embedded Solutions, Bots, AI & Machine Learning ā Tools/Software ⬠Subversion, GitHub, Trello, Jira, Slack, Asana ā Our Strengths ⬠Regular Communication ⬠Daily & Weekly work update reports ⬠100% Guaranteed Plagiarism-Free Work ⬠Guaranteed Data Security & Privacy ⬠Agile Development Methodology ⬠Flexible Engagement Models: - FIXED COST - TIME & MATERIAL(Hourly) - DEDICATED TEAM - HYBRID MODEL (Fixed + Hourly) Experience the Narola Infotech advantage and unlock your business's true potential with our state-of-the-art web apps, mobile apps, and digital solutions..Hire winmaclin
25 USD / hourWe are a Canadian-Ukrainian team of highly professional IT specialists (software developers, designers, system administrators and Internet marketers) with more than 20 years expertise. OUR MAIN SPECIALIZATIONS: 1) WEB DEVELOPMENT & SOFTWARE DEVELOPMENT 1.1) FRONT-END: HTML, HTML5, CSS3, Bootstrap, TailwindCSS 1.2) JAVASCRIPT: JavaScript, ES6+, Typescript, Node.js, MEAN, MERN, MEVN, Angular, React.js, Vue.js, Nuxt.js, Next.js, Gatsby.js, jQuery 1.3) BACK-END 1.3.1) LAMP (Linux, Apache, MySQL, PHP) including Symfony, Laravel, Yii, Zend, CodeIgniter, CakePHP 1.3.2) Python (Python, Django, Flask, FastAPI) 1.3.3) .NET stack technologies (C#, ASP.NET, .NET Core) 1.4) OPEN SOURCE SOLUTIONS 1.4.1) E-commerce Platforms: Shopify, Magento, WooCommerce, Prestashop, OpenCart, BigCommerce, Shopware, osCommerce 1.4.2) CMS: WordPress, Drupal, Joomla, TYPO3 etc. 1.4.3) CRM: SuiteCRM, SugarCRM 2) MOBILE DEVELOPMENT 2.1) Android native development: Java, Kotlin 2.2) iOS native development: Swift, Objective-C 2.3) Cross platform development: Flutter, React Native, Ionic 3) DESIGN 3.1) Website Design (UI (User Interface), UX (User Experience) etc.) 3.2) Graphic Design (Creative Design, Digital Design, Advertisement Design etc.) 3.3) Corporate Identity (Brand Boooks, Business Cards, Logos, LetterHeads etc.) 4) INTERNET MARKETING 4.1) Social Media Marketing (Linkedin, Xing, Facebook, YouTube, Instagram etc.) 4.2) SEO (SEO Copywriting, SEO Auditing, White Hat SEO) 4.3) PPC Marketing (Google Adwords, Google Ads, Facebook Ads, YouTube Ads, Instagram Ads etc.) 4.4) Email Marketing 5) MANAGED SERVICES 5.1) 24/7 TECHNICAL SUPPORT 5.2) SYSTEM ADMINISTRATION SERVICES Our team of high qualified System Administrators have huge experience with technologies covering: - different distributions of OS Linux, Unix and MS Windows Server systems; - different types of virtualization (ProxMox, Virtuozzo, OpenVZ, KVM, XEN, VMware, Hyper-V); - VPN/DNS/IPTables/Firewalls/web servers/mail servers configuration and tuning etc.; - cloud solutions (AWS, MS Azure, Google Cloud, Alibaba Cloud, OVHcloud, DigitalOcean, Linode etc.). 6) HOSTING SERVICES provided by our hosting subdivision under trade mark "TanHost" 6.1) Cloud based solutions (e.g. configuration and technical support of Private Clouds); 6.2) Š”ollocation services, the providing for rent dedicated and VPS/VDS (virtual servers); 6.3) Shared Hosting; 6.4) Domain names registration services; 6.5) SSL Certificates. 7) EMBEDDED SYSTEMS 7.1) Embedded software development 7.2) Internet of Things (IoT) 7.3) Microcontrollers programming 7.4) Arduino microcontrollers programming OUR CREDO: Reputation ā is above anything else! We help our customers to grow success and we grow together with our customers! We are flexible to meet our clients' needs. We make it simple...Hire tangramua
20 USD / hourDear , We carefully studied the description of your project and we can confirm that we understand your needs and are also interested in your project. Our team has the necessary resources to start your project as soon as possible and complete it in a very short time. We are 25 years in this business and our technical specialists have strong experience in PHP, Data Processing, Data Entry, Excel, Administrative Support, Data Collection, Data Management and other technologies relevant to your project. Please, review our profile https://www.freelancer.com/u/tangramua where you can find detailed information about our company, our portfolio, and the client's recent reviews. Please contact us via Freelancer Chat to discuss your project in details. Best regards,Hire abhishekabhish30
15 USD / hourExpertise: Visual Basic, Excel, Power BI, Accounting, Xero, Finance, QuickBooks, Lead Generation, Research, MS Word, Formatting and Layout, Market Research, Financial Research, DocuSign, Salesforce, Pitch Deck, Google Sheet Automation, Gantt Chart, Smartsheet, PDF, forms, MS Access, Statistical Analysis, SPSS Statistics, Data Science, Web Scrapping, Python, Web Search, Contact person email search, Leads, Data Entry, Copy Typing, Data Transfer in Excel & Word from any source like Handwritten files, Tableau & Power BI, Data Analysis, Bookkeeping, Finance, Audio/Video Transcription, Type Form, Latex. Hablo espaƱol, inglĆ©s e hindi, lo que facilito la ejecución perfecta de todos tus proyectos sin que las fronteras teĀ obstaculicen. Satisfaction Guaranteed: 100% Areas of Proficiency and Experience: ā Data Modeling and Analysis ā Data Visualization : Tableau & PowerBI ā Accounting, Xero, Finance, QuickBooks, ā Excel VBA - Advance MS excel/access/outlook/PowerPoint VBA (Macros) modeling, VB6, Analysis and Reports, FINANCIAL Models, Account Reconciliation, Financial analysis, MIS reporting, Bookkeeping, and invoicing part, Mail Merge /Emails through Outlook-Gmail-others, Arrays, Forecasting ā VBA- Desktop Applications ā Format, Edit and Design MS Word Document. ā Google Sheet Automation, Formulas and Macros ā Power BI - reports and dashboards, Data Model with DAX development ā MS Access DB, SQL, MySQL, Database Management ā Websites Scraping (VB, Python, C#, Java) ā ZoomInfo B2B DB- 5 Millions ā Web search, Market research, Financial Research, Company Data Research, All about to search ā Personal Email Searching - (CEO, Director, President, Sales Person, Marketing person, VP etc) ā Search Google for Specific Company's Website and contact details ā Virtual Assistantā Inventory Managementā Data Entryā Product Listingā Shopify ā Copy Typingā Pdf/Word/Web to Excelā Excel to WebāExcel to XML Thank you for visiting my profile. Feel free to drop a message to initiate a chat.Hire Webxpert4u
25 USD / hourUnleashing Words, Igniting Impact: Meet Your Content Catalyst and Pro Researcher ā Unsa! With over 12+ years of immersive experience in research and content writing industry, I bring a unique blend of creativity, precision, and a touch of magic to every word. My writing style is engaging; but highly technical (if needed). I create every piece from scratch, so whether youāre a blogger, B2C, or B2B or even looking to have a thought-provoking eBook you can be sure that youāre getting exactly what you need. Do you know why I am so confident in my assertions? ⤠It is because what I do is three-fold: 1) Research a subject exhaustively, then 2) Distill complex information into an understandable content; and 3) Convey that information in a clear and conversational way. Seems interesting? Let's dive into the realm of creativity and see what unique wonders I can craft: ā eBooks ā Blog Posts and Articles ā Autobiography and Memoirs ā Novels ā Short Children Stories ā Web Copy ā Newsletters ā Social Media Posts ā Emails and Legal Letters ā ATS-Resume, Cover Letter, & LinkedIn Profile ā Business Documents (Business Plans, Proposals, Policies, Pitch decks) ā Proofreading, Rewriting, and General Editing While my experience may not span three decades, I offer a fresh perspective and a commitment to crafting enjoyable and fluff-free content that aligns with your preferences. 'HIRE ME' and let's dive into a conversation where ideas dance and possibilities flourish š May your day be blessed in many ways! Cheers, Unsa Alam. P.S.: Ā© I'm open to sign NDA for safeguarding ideas and business interests.Hire UnsaAlam
50 USD / hourExcel AI Customer Analytics Dashboard 1 Details Proposals User Avatar Work-Nix Solutions @utrathore3 Flag of Pakistan Excel | VBA | Macro | Automation | Googlesheet Replies within an hour Report Bid User Avatar Unsa A. @UnsaAlam Flag of Pakistan SPSS | PowerBI | ML&Python |OpenCV| XLS | AI | LLM Replies within a few hours Report Bid User Avatar Jean R. @JohnRikz Flag of Lebanon Power Platform | 365 Automation | Python | Excel | Replies within a few hours Report Bid User Avatar Ayaz A. @ayazakhtar75 Flag of Pakistan Excel | VBA | Macro | Analyst | Googlesheet Script Replies within an hour Report Bid User Avatar Kelvin Writer @kelvinm094 Flag of Kenya Your Go-To Freelancer: Fast, Accurate, Affordable Replies within a few hours Report Bid User Avatar Jane N. @janita24 Flag of Kenya Tableau | Power BI | ArcGIS | SQL | Geospatial Replies within a few hours Report Bid User Avatar Alok A. @finecodervw Flag of India Python, AI/ML, VBA, Google Sheets, Access Replies within a few hours Report Bid User Avatar Bristy K. @jesica46 Flag of Bangladesh in 1 day Writing/Business Plan/Financial Plan/Data Analysis Hello there, As an experienced researcher and data scientist, data analyst, my qualitative analysis skills perfectly align with your job requirements. My profound knowledge of Python and R Studio guarantees fast learning and adaptation to new tools. Moreover, my advanced skills in Excel make me highly competent in handling large datasets efficientlyāmaking me proficient in extracting the best insights from your transcripts. I fully comprehend the importance of working papers and meticulously preparing financial statements, especially within strict timelines. my sharp analytical skills and extensive knowledge of excel ensure that I leave no stone unturned in making sure every detail is covered under evaluation. My passion for quality, originality and meeting deadlines makes me an excellent choice for this project. I cannot wait to prove my extensive skills to you through providing actionable insights that will help guide your decision making regarding domestic charter flights. Best Regards Replies within a few hoursHire shathyk"\t\t\t\t"
75 USD / hour(Ł Ų§Ų“Ų§Ų”Ų§ŁŁŪ ŁŲ§ ŁŁŪ Ų§ŁŲ§ŲØŲ§ŁŁŪ) Welcome to Work-Nix Solutions ā your trusted partner for transformative business solutions designed to accelerate growth and unlock your full potential. Our team of experts delivers tailored, high-impact services that streamline operations, optimize performance, and elevate your success. Whether you're looking to automate processes, enhance your data analysis, or fine-tune your business strategies, weāve got you covered. Here's what we offer: Excel/Google sheets Mastery: - Macros/VBA - Power BI - Dashboarding - KPI Indicators - Data Analysis - Excel Forms - Pivot Tables - Financial Modeling - Excel Automations - Data Visualization PDF & Document Solutions: - PDF Conversion, Editing & OCR Processing - Interactive PDF Forms - Document Security & Accessibility - File Compression & Redactions - PDF Watermarking - PDF Digital Signatures - PDF to Image Conversion - PDF Quality Assurance and Proofreading Virtual Assistance: - Customer Support - Chat/Phone/Email Support - Data Entry - Clerical Task Management - Calendar Management - Travel Arrangements - Document Preparation - Transcription Services Accounting Brilliance: - AR/AP Management - Invoicing/Billing - Bank Reconciliation - Financial Statement Preparation - Expense Tracking - Budgeting and Forecasting - Cash Flow Management - Tax Preparation Support Data Wizardry: - Data Processing and Cleansing - Copy Typing and Formatting - File Conversions - PDF Editing and Forms Creation - Web Research and Data Mining - Database Management - Statistical Analysis - Data Visualization Graphic Design: - Logo Design - Flyer Design - Business Cards - Birthday Cards - Photo Editing Why Work With Us? Innovation. Precision. Results. Work-Nix Solutions is all about creating impactful, customized solutions that deliver measurable success. Whether it's through cutting-edge data analytics, stunning design, or efficient virtual support, weāre committed to making your business run smarter, faster, and more profitably.Hire utrathore3
50 USD / hourExcel AI Customer Analytics Dashboard 1 Details Proposals User Avatar Work-Nix Solutions @utrathore3 Flag of Pakistan Excel | VBA | Macro | Automation | Googlesheet Replies within an hour Report Bid User Avatar Unsa A. @UnsaAlam Flag of Pakistan SPSS | PowerBI | ML&Python |OpenCV| XLS | AI | LLM Replies within a few hours Report Bid User Avatar Jean R. @JohnRikz Flag of Lebanon Power Platform | 365 Automation | Python | Excel | Replies within a few hours Report Bid User Avatar Ayaz A. @ayazakhtar75 Flag of Pakistan Excel | VBA | Macro | Analyst | Googlesheet Script Replies within an hour Report Bid User Avatar Kelvin Writer @kelvinm094 Flag of Kenya Your Go-To Freelancer: Fast, Accurate, Affordable Replies within a few hours Report Bid User Avatar Jane N. @janita24 Flag of Kenya Tableau | Power BI | ArcGIS | SQL | Geospatial Replies within a few hours Report Bid User Avatar Alok A. @finecodervw Flag of India Python, AI/ML, VBA, Google Sheets, Access Replies within a few hours Report Bid User Avatar Bristy K. @jesica46 Flag of Bangladesh in 1 day Writing/Business Plan/Financial Plan/Data Analysis Hello there, As an experienced researcher and data scientist, data analyst, my qualitative analysis skills perfectly align with your job requirements. My profound knowledge of Python and R Studio guarantees fast learning and adaptation to new tools. Moreover, my advanced skills in Excel make me highly competent in handling large datasets efficientlyāmaking me proficient in extracting the best insights from your transcripts. I fully comprehend the importance of working papers and meticulously preparing financial statements, especially within strict timelines. my sharp analytical skills and extensive knowledge of excel ensure that I leave no stone unturned in making sure every detail is covered under evaluation. My passion for quality, originality and meeting deadlines makes me an excellent choice for this project. I cannot wait to prove my extensive skills to you through providing actionable insights that will help guide your decision making regarding domestic charter flights. Best Regards Replies within a few hoursHire shathyk
arhamsoftltd arhamsoftltd
USD / hour Award-Winning ISO-Certified IT firm | Among Top 1%United States65 USD / hour: ArhamSoft LLC is an ISO-certified software development company, proudly serving clients worldwide since 2007. With a strong presence across the USA, UK, Germany, UAE, and Saudi Arabia, we have delivered innovative, scalable, and business-driven solutions to organizations of all sizes. Over the years, we have had the privilege of working with Fortune 500 companies, helping them achieve digital transformation with efficiency and excellence. As trusted technology partners, we hold official partnerships with Odoo, Salesforce, and Microsoft, enabling us to deliver cutting-edge solutions powered by the latest tools and platforms. With a team of dedicated professionals and a proven track record across industries, ArhamSoft continues to empower businesses with ERP systems, custom software, AI/ML, mobile applications, and enterprise-grade solutions that drive growth and long-term success. Our Expertise: - Artificial Intelligence (AI), Machine Learning (ML), and Natural Language Processing (NLP) - Blockchain & Web3 Solutions - Mobile App Development (iOS & Android) - Web Development & Custom SaaS Platforms - ERP & CRM Solutions (Odoo, Salesforce, Microsoft Dynamics) - Cloud Computing & Enterprise Software Integration & : - Presidential Award for Best Software Company - Clutch Top IT Service Provider - Pakistan Digital Award (PDA) 2021 - P@SHA ICT Award Winner (2021) - LCCI Best Software House Award & - ISO 9001:2015 Quality Management Systems - ISO 27001:2013 Information Security Management Salesforce Partner: https://appexchange.salesforce.com/appxConsultingListingDetail?listingId=a0NHu00000p0vBtMAI Odoo Partner: https://www.odoo.com/partners/arhamsoft-13313341 Microsoft Partner ? ISO Certified for Quality & Information Security Official Odoo, Microsoft & Salesforce Partner 18+ Years of Proven Industry Experience with 500+ global clients 100% Client Satisfaction Rate backed by long-term partnerships 230+ In-house Skilled Resources across AI, Web, Mobile, and Blockchain Full-Cycle IT Services: From strategy & development to deployment & support Proven Expertise in Complex, Enterprise-Scale Projects Strong QA & Security Practices ensuring compliance and reliability Customer-Centric Approach with transparent communication Agile & Scalable Delivery Models to fit startups, SMEs, and enterprises Award-Winning Company recognized for innovation & excellence : Looking to bring your next big idea to life or optimize your business with advanced technology? Lets make it happen together. Contact us today and discover how ArhamSoft can become your trusted technology partner.Hire arhamsoftltd
hassanarshad92 hassanarshad92
USD / hour Content Writer ā Research Analyst ā Copywriter āPakistan15 USD / hourYour One-Stop Solution for Research, Writing & Strategic Content Creation High-quality research, persuasive content, and strategic insightsāall of this under one window. Now, you have come to the right place. I assure you that my unique blend of data-driven analysis and research expertise will perfectly meet your expectations. As a professional Research Analyst, Content Writer, Copywriter, and Market Research Expert, I help businesses, professionals, and startups stand out and succeed. Here is everything I can and am willing to offer: Research & Analysis ā Taking it from in-depth financial and qualitative research to cutting-edge market insights, I craft thorough reports, proposals, and feasibility studies that support intelligent decision-making. Business & Marketing StrategyāDo you Need a business plan, company profile, or pitch deck that will win over investors? I create professional, well-researched, and visually engaging content to uplift your brand (and its products/services, as well, obviously). Writing that Converts & Engages ā Whether itās SEO-optimized web content, LinkedIn profiles, blog articles, press releases, or social media posts, I write with clarity and persuasion which fits best in terms of audience engagement. Academic & Professional Writing ā Developing theses, dissertations, research proposals, and reports plus a proficient expertise with quantitative tools such as; SPSS analysis and industry-specific insights. Creative & Script Writing ā Need compelling video scripts, podcast scripts, or e-books? I bring storytelling magic to your brand and content strategy. Just convey your thoughts and Iāll put them over in pleasant words. AI & Digital Content ā Optimized writing for Web 2.0 platforms (Quora, Reddit, Pinterest), engaging infographics, and high-quality AI voiceovers. You might think that why should you work with me? So here is your answer Data-driven & Insightful expertise backed by strong research skills; I deliver factual, well-structured content. Truly SEO & Engagement- Focused on working dynamically with maximized online visibility and audience engagement. 100% Original & Tailored Content with no fluff, just content that resonates and delivers results. Deadline-Oriented & Reliable working ethics, and your project will be delivered on time, every single time. With access to paid online suites, I dedicate my work to fully complying with industry standards. My library of tools includes Turnitin, Copyleaks, Grammarly, and so on. Feel free to rely on my work without fearing plagiarism or AI detection. Letās turn your vision and expectations, most importantly, into compelling content, whether verbal or written! Whether you're an entrepreneur, researcher, or content-driven brand, Iām here to help. Letās connect and create something impactful together!Hire hassanarshad92
12 USD / hourāØ ššØš©-ššššš šššššš¦š¢š šš«š¢ššš« & šš®š¬š¢š§šš¬š¬ ššØš§š¬š®š„ššš§š | š.šā šššš¢š§š ⨠ššš+ šš®šššš¬š¬šš®š„ šš«šØš£šššš¬ | šš% šš„š¢šš§š šššš¢š¬ššššš¢šØš§ āØ šš±š©šš«š š¢š§ ššš¬ššš«šš” šš«š¢šš¢š§š , šš®š¬š¢š§šš¬š¬ & š š¢š§šš§šš¢šš„ šš„šš§š¬, šššš āØ šš«š®š¬ššš šš² šš„šØššš„ šš„š¢šš§šš¬ āØ ššš§ ššš„š¢šÆšš« šØš§ šš«š šš§š ššššš„š¢š§šš¬ Hi, Iām a results-driven Academic Writer, Business & Financial Planning Expert, and SPSS Analyst. I help students, researchers, startups, and businesses turn complex ideas into clear, well-structured, and high-quality documents that meet academic, journal, and professional standards. I have worked on research papers, literature reviews, business plans, financial projections, and data analysis projects that helped clients publish successfully, secure funding, and make data-driven decisions. āØ šš”šš š šš«š¢š§š ššØ šš”š šššš„š: ā Academic & Research Writing ā Research papers, reports, literature reviews ā Referencing Styles ā APA, MLA, IEEE, Harvard, OSCOLA ā Business & Financial Plans ā Market research, feasibility studies, company profiles ā Financial Projections ā Excel-based forecasting and models ā SPSS Analysis ā Statistical tests, data interpretation, result reporting ā Data Analysis & Visualization ā Excel analysis, charts, and presentations ā Professional Documents ā Proposals, executive summaries, pitch decks ā Resume Writing ā ATS-friendly resumes and cover letters āØ šš”š² šš„š¢šš§šš¬ šš”šØšØš¬š šš: š¹ Results-Focused & Detail-Oriented š¹ Clear Communication & Fast Turnaround š¹ SEO-Optimized & Well-Structured Content š¹ Revisions Until Satisfaction š” šššāš¬ ššØš«š¤ ššØš ššš”šš« Whether you need academic writing, business planning, or SPSS data analysis, Iām here to deliver reliable, high-quality work on time.Hire widesolutionsw
45 USD / hourDigital & Analog Electronics VHDL-Verilog-System verilog Matlab/Simulink Analog and Digital Communications Rust Python C/ C++/C# Micro-controllers Data Structures OOP Qt/ PyQt OpenCV x86 assemblyHire Lightcanon