I am a professional full-stack developer with a Specialist degree working since PHP 4 era. I write very stable and tested code for business-critical applications.

I help businesses build, fix, and scale full-stack web applications using .NET, Azure, and modern JavaScript frameworks — without needing to hire separate backend, cloud, and frontend engineers. ✔ 18+ years of enterprise software development ✔ 60+ projects delivered | 9000+ hours worked on Upwork ✔ Azure Certified (Developer Associate + Cosmos DB Specialty) ✔ Trusted by international clients including FDM, Danx, and Atea ✔ AI-assisted development (Claude/Copilot) for faster delivery with strong test coverage ⭐ WHAT CLIENTS SAY ✔ "Yasir did a great job jumping in and getting started right away... open to feedback and suggestions during code reviews." ✔ "Yasir joined us when we needed a developer immediately, he quickly understands the requirements and did quality work." ✔ "Very skilled in software development and architecture, a good communicator... a pleasure to work with." 💡 HOW I CAN HELP YOU ✔ Build scalable ASP.NET Core Web APIs & microservices ✔ Design and deploy secure Azure cloud solutions (Functions, App Services, Cosmos DB) ✔ Develop full-stack apps with Angular, React, Next.js, or Blazor ✔ Upgrade legacy .NET Framework / Web Forms apps to modern architecture ✔ Fix critical production issues and improve performance ✔ Integrate third-party APIs and automate workflows with AI tools 🛠 CORE TECH STACK ✔ C#, ASP.NET Core, .NET Web APIs, .NET 8/9 ✔ Azure (Functions, App Services, Storage, Cosmos DB, DevOps/CI-CD) ✔ Angular, React, Next.js, Blazor (WASM & Server), TypeScript ✔ SQL Server, Entity Framework, REST APIs ✔ Git, Agile, AI-assisted development workflows ☁️ CERTIFICATIONS ✔ Microsoft Certified: Azure Developer Associate ✔ Microsoft Certified: Azure Fundamentals ✔ Microsoft Certified: Azure Cosmos DB Developer Specialty I'm available to start quickly and can work independently or embed with your existing team. Whether it's a new build, a legacy upgrade, or an urgent fix — invite me to your job and let's get started.

Available up to 40 hrs a week. I help you deploy faster, scale reliably, and save money on AWS. Whether it’s setting up Kubernetes clusters, automating CI/CD pipelines, writing backends, or optimising cloud resources. I build infra that doesn’t break at 3 AM. I do my best thinking when I'm away from my desk, so hourly billing doesn't make sense for either of us🤝.

About Me I have 10+ years of experience in Project Management of Mobile App Development, specializing in Android, iOS, & Cross-Platform App Development using Java, Kotlin, Swift, Objective C, React Native Mobile, Redux Flutter, Firebase, Mongo Db, User Authentication, EHR, FHIR, HL7, HIPAA compliance, Typescripts, and AI-driven applications. My expertise spans iOS & Android development, AI-powered solutions, seamless authentication systems, and full-stack capabilities, ensuring modern, high-performance apps for businesses of all sizes. Our Agency Since July 2017, my husband, our talented 55+ team members, and I have been delivering world-class digital solutions. - 150+ apps successfully delivered across multiple platforms in the last year - $4M+ turnover on Upwork - 500+ successful projects, 15,000+ hours worked - Close to a 100% success rate - Worked with 7, 8, and 9-figure businesses Our Expertise Mobile App Development • Android, iOS, & Cross-Platform Apps (Java, Kotlin, Swift, Objective C, React Native Mobile, Flutter) Web & Full Stack Development • Front-End: React.js, Angular.js, Next.js, WebRTC • Back-End: Node.js, Firebase, MongoDB, PostgreSQL • Cloud Deployment & API Integrations E-commerce & CMS Development • Shopify Developer & Customization • WordPress Developer & WooCommerce Solutions UI/UX Design & Branding • Adobe XD, Figma, Photoshop, Sketch Digital Growth & Security • SEO & Digital Marketing Optimization • Data Security & Intellectual Property Protection Intellectual Property Services • Trademark & Copyright Assistance Why Choose SolidAppMaker? - Tailored Approach: Every project is customized to fit your needs and budget. - Agile Workflow: Regular updates, milestones, and transparent communication. - High-Quality Development: Rigorous testing & performance optimization. - Competitive Pricing: Top-tier services at fair and transparent pricing. - Proven Track Record: Experience with MVPs, SaaS platforms, AI-driven apps, and enterprise solutions. Why SolidAppMaker Stands Out - 8+ years of expertise in UI/UX, mobile apps, SaaS & web development - 510+ projects successfully completed for startups & enterprises - 10+ awards & recognitions, featured on Upwork & top design platforms - 20+ countries served, delivering top-tier prototyping & development solutions Industries We Cover Healthcare, Transport, Retail, Asset Management, Real Estate, Dating, Nature/Wildlife, Rental, Food Delivery, Fintech / Finance and Banking, Cryptocurrency, Entertainment, Hospitality, Logistics, Manufacturing, Media and Publishing, Non-Profit, Sports and Fitness, Travel and Tourism, Utilities, Wellness, Medical Dashboard, Marketplace, Advertising, Automotive, Business Innovations, Ecology, Human Resources, LegalTech, Lifestyle, Fashion, Marketing, Navigation, Education, E-learning. Highlighted Skills Project Planning, MVC Architecture and RESTful APIs, Front-end Technologies (React.js, HTML5, CSS3, JavaScript), Responsive and Mobile-first Design, Database Design and Implementation (MongoDB, Firebase), User Authentication, Integration of Third-party APIs, Deployment to Cloud Platforms (AWS), Test-driven Development, Agile Methodologies (Scrum, Kanban), Security Technologies, QR Code Scanner, GPS and Mapping, Blockchain and NFT, ChatGPT and Artificial Intelligence. React Native Mobile Developer 10+ years of experience As a Mobile App Developer and Full Stack Developer with deep expertise in SaaS Mobile App, React Native Mobile App I bring over a decade of experience in building high-performance cross-platform mobile application. As a talented React Native Mobile Developer with good knowledge of cross-platform development, I specialize in crafting high-performance mobile apps for both iOS and Android platforms. I made more than 400 apps using React Native Mobile. Reactnative Mobile is my main tech stack, making top-performing apps using React Native Mobile. IOSDeveloper AndroidDevelop As a mobile app developer and full stack developer, I specialize in building robust cross-platform solutions using Flutter, React Native Mobile, and Expo for rapid development. My projects often leverage Firebase for secure real-time data storage and user authentication, and I have hands-on experience integrating WebRTC for live video and audio communication inside mobile apps. On the backend, I frequently use Laravel to build scalable APIs and admin panels that perfectly support mobileapp solutions. ReactNative Next Steps – Let’s Build Something Amazing! 📅 Would you be available for a 30-60 minute free consultation? During this meeting, we will: - Go over your project goals, technical needs, and budget. - Provide a project plan with a timeline and cost estimate. - Discuss the best development approach to fit your vision. - Send me a message, and I’ll share the Upwork scheduler link so we can set up a time that works best for you. Looking forward to collaborating and creating something extraordinary! Best regards, Daisy VC

Looking for challenging new projects which can effectively use my talents and creativity, to generate cost effective software solutions. I'm a world class C programmer (primarily on Unix/Linux) and I'm used to making "impossible" tasks "possible". I have a great deal of expertise in: * real time embedded systems * cross compilation/software construction * source control * network programming * system administration * kernel level programming/device drivers * image processing * performance and metrics

I am a Senior Developer with 14+ Years of experience in ( PHP, Laravel, Codeigniter, Perfex CRM, WordPress , Elementor, Beaver Builder, Divi Builder, Thrive Architect, Site Origin Page Builder, WPBakery Page Builder, Themify Builder, Brizy, Visual Composer, WP Page Builder ), Application Development. My aim is always been to produce websites that look beautiful and professional, are highly functional, and provide excellent quality work on time according to client requirements. I can convert from PSD to HTML, PSD to WordPress, Wordpress Plugin Development, Theme development from scratch, Plugin editing. I am looking for business partner for long term relations beside of doing a search project by project and i understand that this is only possible if i will give them a proper communication, A Quality work output as long term business relation give comfort at Front end and Back end. My main working skill Php, Laravel, Codeigniter, WordPress , Advance Core PHP, Graphic design, Responsive web development, Strong knowledge of jQuery JavaScript and React Native. I have the following skills : • Php: Core Php, Oops, Mysqli Database, API Integration, MVC • Ecommerce: Magento, WordPress, Core Php, Shopify, Oscommerce • Frame Work: Laravel, Cakephp, Codeigniter, Smarty, Yii • Design: Web Designing, Graphic Designing Figma Design, PSD, PDF • Client Side: Html5, Css3, Bootstrap JavaScript, Jquery, Ajax • Scripting Language: Angular.js, node.js, react.Js, Vue.Js, Pathon.js, etc. • GitHub, Git-lab Bitbucket... • API Expert: Twilio SMS, Android API, Bit-coin API, Pay-pa-l API, Laravel API, send grid email API. • CMS: WordPress, Joomla, Drupal • E-commerce, SPA, RDBMS Solutions, Native APPs, Clinical Software, Healthcare Schedule System, Data Mining, Focusing on client business goal. I have also created over 10k+ websites, most of which required custom-designed extensions, themes, and coding with any control panel like AWS(S3, Ec2), Godaddy, Siteground, Hostgator, Hostwind, WHMCS, Cpanel, web-hosting, etc. I am expert also in the domain and hosting customization, installation, setup. Ready for any Interview or want to discuss anything. I am available at your comfort time and start your work. Regards Tarsem Kumar

Teams usually come to me when their backend, API, data pipeline, or AI workflow technically works — but is not reliable enough for real usage. I help stabilize systems that are already built but breaking under production conditions: inconsistent data, brittle integrations, unclear API behavior, missing validation, edge-case failures, or AI outputs that are difficult to trust downstream. My work usually falls into three areas: • Backend/API reliability — fixing brittle routes, edge cases, validation gaps, integration failures, and unclear system boundaries • Data pipelines and transformations — building ETL, integration, and transformation layers that produce consistent, validated outputs • AI workflow productionization — turning LLM/API prototypes into structured, testable systems with validation, traceability, controlled outputs, and clear handoff points I work primarily with Python, Node.js, TypeScript, SQL, MongoDB, PostgreSQL, Flask, REST APIs, and LLM/API integrations. A typical engagement might include: • Reviewing an existing backend, API, or pipeline and identifying the real failure points • Refactoring backend logic so behavior is predictable and easier to maintain • Adding validation, structured outputs, logging, and error handling • Fixing data inconsistencies across database, API, and integration layers • Stabilizing AI workflows with deterministic guardrails, retry/review paths, and traceable outputs • Writing clear documentation so the system can be maintained after the fix My Upwork history includes long-term backend/AI platform work, API middleware projects, database implementation, and technical QA engagements where clients needed clear diagnosis, reliable implementation, and strong communication. I’m a strong fit if: • Your system mostly works but fails under real-world usage • Your API, database, or data pipeline is producing inconsistent results • You built something quickly and now need to make it production-ready • Your AI workflow needs validation, structure, and reliability before users depend on it • You need someone who can step into an existing system, find the weak points, and fix them without overcomplicating the solution I’m comfortable working in existing codebases, identifying failure points quickly, and bringing structure to systems that have become hard to trust or maintain. If you’re dealing with an unreliable backend, API, data pipeline, or AI workflow, send an invite and we can define a practical first step.

Laravel developer building B2B SaaS platforms and web marketplaces for 7+ years. Top Rated on Upwork. 100% JSS. 7,000+ hours billed. $200k+ earned. Any bug in my code is fixed at no extra cost - for as long as your platform is live. That's the warranty I give every client, and it's why I've kept a 100% satisfaction rate across 32 jobs. Platforms I've shipped: Oscar Yankee Wings - aviation training SaaS (Denmark): multi-role dashboards for Head of Training, Operations, Instructor, Accountant, Student, Safety Manager; logbook system compatible with EASA standard; Dropbox integration; Laravel 8→11 upgrade with zero disruption to live users Defero - AI-driven scoring and recommendation platform (Norway): DynamicYield-based recommendation engine for personalized decision flows; gamification layer; scoring algorithm; full SaaS dashboard with admin panel and API integrations AdSplash - MarTech multi-platform data aggregator (USA): dashboards pulling from Google, YouTube, Facebook, Instagram, AppStore, Snapchat within a single interface; payment wallet integrations; role-based permissions; super-admin architecture UnderTheRadar - subscription research platform with tiered access (Australia): subscription access control with tiered membership plans; interactive portfolio manager; full dashboard rebuild, QA cycle, and production deployment MyMyCars - automotive marketplace (Ukraine): rotation system, test drive booking, AI recommendation engine for similar/competitive car models, Elasticsearch, automatic data filling via state database API integration A-link - Marketing automation SaaS (Malta): link builder, Ahrefs analysis, dashboard, filtration system, Stripe integration; Laravel + Vue.js + PostgreSQL Carma - multi-step approval workflow platform (Saudi Arabia): OTP SMS auth, document upload pipeline, financial analysis integration, end-to-end request submission and approval workflow, payment infrastructure Dance Planet - E-Commerce + ERP platform (Ukraine): multi-role booking system, supply chain management, selling automation; Laravel + Vue.js + Nuxt.js + MySQL Stack: Laravel, PHP, Symfony, PostgreSQL, MySQL, Vue.js, React, JavaScript, Node.js, HTML5, CSS, Bootstrap, REST API, Git, Docker, Redis, Stripe, DigitalOcean, Livewire What working with me looks like: architecture scoped before a single line of code is written. Daily async updates. Clean, documented, production-ready code. 30+ hours/week. Flexible on timezone. Lifetime warranty included on every project - any bug in my code, I fix it. No invoice. No argument. That's been my standard for 7 years. Building a B2B SaaS or marketplace? Send me a message.

Your AWS infrastructure should deploy in minutes, survive traffic spikes, and never wake you at 3 AM. I build and fix the systems that make that true. I'm a senior DevOps engineer (AWS Certified Solutions Architect + RHCSA, Top Rated with a 100% Job Success Score) who designs, automates, and hardens production cloud infrastructure for SaaS teams and startups. I take messy or fragile setups and turn them into infrastructure your team can deploy confidently and your finance team can budget. 🚀 What I do best: ▸ AWS infrastructure & serverless architecture: VPC, EKS/ECS, Lambda, API Gateway, RDS/Aurora, fully codified in Terraform or CloudFormation so everything is reproducible and rollback-safe. (Recently architected a 5-service serverless platform on AWS with zero-downtime deploys and full IaC.) ▸ Kubernetes that doesn't fight you: EKS design, autoscaling, zero-downtime rollouts, and the observability to catch problems before users do. ▸ CI/CD that ships in minutes: GitHub Actions / GitLab / Jenkins pipelines with testing, scanning, and automatic rollback. ▸ AWS cost optimization (FinOps): I find the waste in your bill and cut it without touching reliability. ▸ DevSecOps & hardening: IAM least-privilege, secrets management, VAPT remediation, infrastructure that passes a security review. 🤝 How I work: like a senior engineer on your team, not a ticket-taker. I tell you what's actually wrong, what it'll cost, and what I'd do if it were my money, then I document it so your team is never left in the dark. If your infrastructure is slowing you down, send me your current setup or the problem you're hitting and I'll tell you what's wrong before you charge anything.

Top-Rated Plus, Upwork Top 1 Percent, Highly recommended. What do I offer: 1- 100% work satisfaction 2- 24/7 Support 3- On-time delivery 4- Enterprise quality Cloud Architect with 7+ years of DevOps experience, specializing in scalable, platform-agnostic cloud infrastructures. Proven track record in high-scale environments. Proficient in Infrastructure as Code, automation, and scripting, with expertise in CI/CD, Cloud Services, and Infrastructure Automation. Skilled in building, deploying, and managing applications on AWS, GCP, Azure, and OCI, with a focus on robust monitoring and observability. ➜ Zazmic Inc, San Francisco, CA • Automation Tools: Terraform, Ansible • Cloud Platforms: GCP • Containerization: Docker, Helm charts • CI/CD: GitLab CI • Monitoring: HPA, Cloud Armour • Databases: Different kinds of databases on GCP ➜ Tripleseat, Concord, Massachusetts • Cloud Platforms: Azure, GCP • Containerization: Docker • CI/CD: Azure Pipelines, Azure DevOps • Monitoring: Grafana, Prometheus ➜ Century Communities, Inc., Greenwood Village, CO • Cloud Platforms: AWS, Oracle Cloud • Automation Tools: Lambda functions, Ansible • Containerization: Docker, AWS ECS, EKS • CI/CD: CircleCI, GitHub Actions, AWS CodePipeline • Monitoring: CloudWatch, CloudFront ➜ Summary: • Proficient in Kubernetes, I architect and manage clusters to facilitate agile and scalable application deployment. • Skilled in Infrastructure as Code (IaC), I employ Terraform, Ansible, and Chef to automate configuration and ensure uniform environments. • With hands-on experience in CI/CD pipeline creation and maintenance using Jenkins, GitLab CI, and Azure DevOps, I ensure the efficient and reliable delivery of software products. • Possessing a robust background in Linux/UNIX system administration, including expertise in managing RHEL environments. • Armed in scripting with Bash and Python to streamline automation processes and optimize operational efficiency. • Good Know how of monitoring and logging tools such as Elasticsearch, CloudWatch, Prometheus, and Grafana, enabling proactive monitoring of infrastructure and application health. • Experienced in VMware virtualization, proficiently managing VMs, executing V-motion operations, and maintaining Snapshots. • Adaptable to fast-paced 24/7 production environments, providing responsive on-call support, including weekends. • Successfully deployed and managed scalable microservices on Kubernetes clusters across GCP and AWS platforms. • Expertise extends to migrating on-premises workloads to the cloud, focusing on performance optimization and cost efficiency. • Possess proactive problem-solving and troubleshooting skills essential for maintaining high-quality production environments. • Strong communication and collaboration abilities, facilitating effective bridging of the gap between development and operations teams. ➜ Tools: Git, Ansible, AWS CloudFormation, ELK, GitLab, GitLab CI/CD, Terraform, Docker Compose, Grafana, Telegraf, CircleCI, Traefik, Amazon CloudWatch, Amazon Elastic Container Service (Amazon ECS), GitHub, VPN, AWS Fargate, Amazon CloudFront CDN, AWS IAM, Amazon Virtual Private Cloud, Docker Swarm, NGINX, Puppet, Jenkins, Amazon EKS, Amazon Simple Queue Service, RabbitMQ, Celery, TeamCity, Nagios, Makefile, AWS CodeDeploy, Confluence, AWS CodeBuild ➜ Platforms: Linux, Docker, Amazon Web Services, AWS Elastic Beanstalk, Amazon EC2, Kubernetes, AWS Lambda, Windows, Apache Kafka, JVM, Heroku, Azure, WordPress, New Relic, Windows Server, Google Cloud Platform, Blockchain, Rancher ➜ Storage: Amazon Aurora, Amazon S3, MySQL, MongoDB, InfluxDB, Redis, On-premise, Amazon DynamoDB, Redis Cache, Elasticsearch, MySQL, Databases, PostgreSQL ➜ Languages: Python, Bash, Java, PHP, Markdown, Go, JavaScript, SQL, TypeScript ➜ Frameworks: Flask, Django, Windows PowerShell, .NET, Serverless Framework ------------------------------------------------------------------------------------------------------ #CloudArchitect #DevOps #Kubernetes #Terraform#Azure #GCP #Docker #CI_CD #InfrastructureAsCode #CloudMigration #DevOpsEngineer #Automation #CloudInfrastructure #Microservices #CloudSecurity #NetworkSecurity #AWSCloud #AzureCloud #Serverless #AWSLambda #AzureDevOps #GitLabCI #GitHubActions #Linux #Unix #Bash #Python #GoLang #Java #Git #Ansible #Jenkins #NGINX #ApacheKafka #Databases #SQL #MySQL #PostgreSQL #MongoDB #Redis #DynamoDB #CloudStorage #S3 #CloudWatch #BackendInfrastructure #WebInfrastructure