Hi, I'm Arya - a Senior Software Engineer with 5+ years building scalable backend systems for fintech, e-commerce, and enterprise platforms. I specialize in high-performance APIs, microservices architecture, and complex third-party integrations. What I deliver: ✅ High-scale backend systems: Architected systems handling 400-600 RPS with 99.9% uptime ✅ Complex integrations: UK HMRC Making Tax Digital, payment gateways, e-commerce platforms ✅ Performance optimization: 50-60% database latency reduction through query optimization ✅ Revenue-driving features: Built product integrations generating 100+ billion IDR monthly revenue Recent client work: UK Tax Integration - Implemented HMRC Making Tax Digital (MTD) ITSA integration for an accounting system, enabling automated tax reporting for self-employment and UK property businesses Dubai Media Platform - Developed backend for a directory-style app featuring local activities, magazine content, and gamification systems Database Optimization - Achieved 50-60% latency reduction on MariaDB/AWS RDS for a Symfony application through Doctrine query optimization Indonesian E-commerce - Led pay-later system integrations with Tokopedia, Shopee, TikTok Shop, Lazada, and Traveloka Core expertise: Backend: Java (Spring Boot), NodeJS, PHP (Laravel/Lumen/Symfony), REST APIs, microservices Databases: MySQL, PostgreSQL, MariaDB - query optimization & schema design Cloud & DevOps: AWS, GCP, Kubernetes, Docker, CI/CD pipelines Integration: Government APIs (HMRC), payment systems, e-commerce platforms Why clients choose me: Proven at scale: 5+ years at Indonesia's leading fintech (part of Djarum Group) International experience: UK, UAE, and Southeast Asian clients Complete delivery: Clean code, tests, documentation, deployment guidance Reliable communication: GMT+7 based, professional English, regular updates Industries: Fintech, E-commerce, Government/Tax, Media & Entertainment, SaaS Ready to build reliable, scalable backend solutions for your business. Let's discuss your project requirements.

I build scalable web apps, mobile apps, and AI-powered platforms for startups and businesses that need working software — not just code. Over the past 18 years, I've helped clients go from idea to MVP to production, and from clunky manual processes to automated systems that save real time and money. What I do best: Full-stack web development with React, Next.js, and Node.js (or PHP Laravel when that's the better fit) Mobile apps for iOS and Android using Flutter or React Native AI integrations — from OpenAI-powered features to custom automation workflows SaaS platforms built for scale, from database architecture to deployment API development and third-party integrations that just work Python automation and data scraping systems Admin dashboards and internal tools that make operations easier to manage Tech stack: React.js, Next.js, Node.js, Python, PHP Laravel, Firebase, Supabase, MongoDB, MySQL, PostgreSQL, AWS, REST APIs, OpenAI Why clients keep coming back: I treat every project like it's my own business — clear communication, honest timelines, and code that's built to be maintained, not just shipped. I've worked across SaaS, healthcare, real estate, booking platforms, and business automation, so I show up already understanding how to translate business goals into technical decisions. If you need a developer who can own a project end-to-end — architecture, build, and long-term support — let's talk about what you're building.

Experienced Software Developer with 10+ years in the software industry. Proficient in requirement analysis, design, implementation, testing, and management of complex software applications. Committed to delivering enterprise level software solutions with exceptional performance driven by a passion for technical innovation, consistently creating world class software applications and products. My expertise spans across cloud infrastructure, containerization, continuous integration and deliver pipelines, and automated deployment solutions. I focus on delivering high-performance, scalable solutions, while collaborating closely with teams to foster technical innovations. ⚙️ Strong knowledge of Agile Software Development process (Scrum, Waterfall, Hybrid, Agile) and Code Review processes in projects of different scale. 🤝Team player, now how to successfully interact with architects, engineers, and product management to deliver user-friendly and visually appealing results. ⭐ Enjoy producing clean, well-written and highly efficient code on my projects. Also I’m convinced that good communication is a key for creating successful products. Key technologies: ✅ Java 8/11/15/17/21 ✅ Kotlin ✅ Python ✅ GoLang ✅ Spring Boot/Spring Cloud ✅ PostgreSQL / MySQL / MariaDB / Cassandra ✅ MongoDB /Redis ✅ Apache Kafka / RabbitMQ ✅ Keycloak/ Oauth2 / Auth0 / AWS Congito ✅ Maven / Gradle ✅ WebSocket / RSocket ✅ Docker / Podman ✅ Kubernetes ✅ Ansible ✅ Terraform ✅ CI/CD (GitLab CI, GitHub Actions) ✅ Shell Scripting ✅ RESTful APIs/GraphQL/RPC ✅ LLM / AI Agents / Claude Code Key Qualifications: ⭐ Expert understanding of any programming language and trending technology ⭐ Understand needs of company of any scale ⭐ Microservices development with even driven architecture ⭐ High-performance, maintainable and reusable code ⭐ Self-starter, hard worker, organized, attentive to details and a team player ⚙ Requirements Analysis & Solution Design ✅ Led requirement analysis sessions to capture and refine technical requirements, translating them into clear, actionable development objectives. ✅ Designed scalable backend architectures using Java and Spring Boot, implementing core application logic, business services, and data layers aligned with project requirements. ✅ Defined and established RESTful API standards to ensure seamless communication between services, enforcing best practices for reliability and performance. ⚙ Building Enterprise-Level Applications ✅ Developed and maintained complex backend services, ensuring high availability and fault tolerance, crucial for enterprise-level applications with strict uptime demands. ✅ Leveraged Spring Boot with frameworks like Spring Data JPA (with Hibernate and MyBatis) and QueryDSL to build efficient data access layers, improving data retrieval speeds and reducing latency. ⚙ Database Management & Optimization ✅ Designed relational and NoSQL database schemas using MySQL, PostgreSQL, MongoDB, and Redis, aligning data structures with application needs for optimal query performance and scalability. ✅ Conducted database performance tuning by implementing indexing, query optimization, and data sharding, improving system efficiency and reducing response times for high-traffic applications. ⭐ DevOps Integration & Deployment ✅ Orchestrated automated CI/CD pipelines using GitLab CI and GitHub Actions, achieving consistent and efficient deployment processes across development, staging, and production environments. ✅ Managed containerized application deployments on Docker and Kubernetes, improving scalability and simplifying resource management in cloud-hosted environments. ⚙ Performance Optimization & Troubleshooting ✅ Optimized backend applications for low latency and high throughput, using caching strategies with Redis and implementing efficient concurrency handling within Java. ✅ Developed comprehensive monitoring and alerting systems to proactively address and troubleshoot production issues, utilizing tools like Prometheus and Grafana to identify bottlenecks and optimize system performance. ⚙️ Key Projects: ⭐ High-Performance E-commerce Platform Backend ✅ Built a scalable backend for a high-traffic e-commerce platform, handling thousands of concurrent transactions with Java, Spring Boot, and PostgreSQL. ✅ Utilized Redis for caching to optimize data retrieval times and reduce server load, achieving a 30% improvement in page load times. ⭐ Microservices Migration for Legacy System ✅ Led the migration of a monolithic application to a Microservices architecture, improving system scalability and maintainability. ✅ Implemented an event-driven communication system using Apache Kafka for efficient inter-service communication, achieving asynchronous data processing with high reliability. ⭐ Real-Time Analytics Dashboard ✅ Developed backend services for a real-time analytics dashboard, enabling users to visualize key metrics and monitor live data.

Highly motivated Full-Stack Web Development aspirant with a strong foundation in Java, C++, C, and Javascript. Currently honing my skills in the MERN Stack and am eager to contribute to a collaborative team. Built several projects utilizing the Discord API. Possesses experience managing and marketing projects, having spearheaded multiple NFT initiatives. Each project brought valuable problem-solving skills and insights into company operations. Proven ability to work independently while also thriving in collaborative environments. Eager to learn and continuously develop my programming expertise.

As a business owner, you’re probably facing challenges; 1. Developers don’t understand the real problem you're trying to solve. 2. What tech stack they should use for a web or mobile app. 3. Adding surprise cost, you never expect in project mid. 4. Your developer guy leaves an unfinished project. 5. Tired of messy code and no documentation. If you’ve had any of the 5 problems I mentioned above… congrats. It means we might be the perfect fit. Hi, I'm Aqeel Haider, Founder & CEO of Machine Intelligence 6 (Mi6). For the last 12+ years, I've helped startups, SMEs, and enterprises build scalable web, mobile, and cloud applications. So far, I’ve worked with 100+ individuals and companies, delivering $1.5M+ worth of successful projects; securely, on time, and with zero headaches. 🔥 "Aqeel and his team at Mi6 are highly professional. Their attention to detail is fantastic and their problem solving is second to none. I couldn't recommend them enough!!!" - Upwork In the last 3 years on Upwork I have built $1.5M+ worth of products serving regions all around the world. (USA, Canada, Australia, UAE, and offcourse my country Pakistan). 🔥 "Aqeel Haider is easily the best developer I’ve ever had the opportunity to collaborate with. He consistently delivers solutions that are both incredibly fast and of outstanding quality. His ability to handle complex challenges with creativity and precision is truly impressive” - Upwork My offer to you? We “put in the work”. Together. I will understand your business needs and your tech requirements so I can give you solutions accordingly… My solutions aren't magical because I only built tech for you. They are magical because I will make sure you get “10x output from your tech product” you never expected… Me and my team do meeting to brainstorm to make your product 10x better version. Why Aqeel Haider? > Worked on 100+ projects (until November 2025) > Spent 12+ years on tech industry > Team of 17+ Tech Hungry Programmers > My quality assurance team who works to make your tech product; Bug free, and efficient. To put it bluntly... I'm putting all of my 12+ years of experience on the line for you and combining it with my deep understanding of writing a neat bug free code. My goal is to become your long-term technology partner, not just complete another project. 🔥 "I had the pleasure of working with Aqeel to fix a malware issue on my WordPress website, and I highly recommend his services. Aqeel was able to quickly identify and remove the malware, and he provided helpful tips for preventing similar issues in the future. He was professional, responsive, and knowledgeable throughout the process." Thanks for reading up until now. You are amazing! I'm one DM away to know your TECH NEEDS..

Oracle Certified Professional (OCP) Senior Software Engineer specialising in AI native Java, Spring, Web, mobile apps, and SaaS products. I help startups and businesses build scalable backend systems, enterprise platforms, and white-label mobile apps, and automate their CI/CD pipelines for fast, reliable deployments. What I deliver: - Java & Spring Boot microservices - Hybrid & native mobile apps (Flutter / React Native) - SaaS and white-label multi-brand solutions - Hospital Management Systems (HMIS), EHR, HL7 integrations - High-volume transactional SMS & IVR systems - Learning Management Systems (LMS) - AI integrations & AI content generation - CI/CD automation (GitHub Actions, Fastlane, Codemagic) - App Store & Play Store deployment - Automated pipeline deployment Tech stack: Java, Spring Boot, Microservices, AWS, Docker, Flutter, React Native, CI/CD, GitHub Actions, Fastlane, Codemagic, HL7, EHR, OpenAI API, SMS/IVR systems Open for Technical partner From code to production — I build, automate, and scale.

🚀 Full Stack Developer with 10+ years of experience in Ruby on Rails, React, and AI integrations, building scalable FinTech, SaaS & HealthTech platforms trusted by startups and enterprises worldwide. 💰 $1B+ in revenue generated and saved for FinTech and HealthTech clients through optimized backend architecture and automation. 🚀 Delivered 100+ successful projects with 5⭐ feedback across SaaS, Banking, Healthcare, and Real-time platforms. 🌟 Top Rated Plus Full Stack Web & SaaS Developer on Upwork 🏅🏅🏅 🌟 Top 1% Ruby on Rails & React Developer 🌟 Top 2% in FinTech & Healthcare Product Engineering 🌟 Top 3% in Node.js & Java Spring Boot Architecture ✨ I specialize in Full Stack Web & Mobile Development, focusing on designing, building, and deploying secure, scalable, and high-performing platforms that drive measurable impact. My role often bridges product strategy and technical implementation, ensuring every feature aligns with real business outcomes. 🧠 Tech Expertise & Stack ✅ Backend: Ruby on Rails, Node.js, Laravel, Java Spring Boot ✅ Frontend: React.js, Next.js, Vue.js, TailwindCSS ✅ AI Integrations: OpenAI (GPT-4), LangChain, Pinecone, vector databases ✅ APIs & Integrations: Stripe, Plaid, Twilio, Firebase, Zapier, AWS SDK ✅ Databases: PostgreSQL, MongoDB, MySQL ✅ Cloud & DevOps: AWS (EC2, S3, Lambda, RDS), Docker, Heroku, CI/CD ✅ Mobile: Flutter, React Native, Swift 💡 Core Services I Offer: • Full Stack Web Development: Ruby on Rails + React.js + Node.js • FinTech Platforms: Banking APIs, KYC, Plaid, Stripe, data compliance • HealthTech Systems: HIPAA-compliant EHR, scheduling, telehealth portals • SaaS Applications: Auth, billing, analytics, and subscription-based dashboards • AI-Powered Features: GPT chatbots, NLP search, LangChain integrations • MVP Development: Fast, secure, investor-ready prototypes and scale-ready builds 🏥 Industries Served: FinTech | HealthTech | SaaS | AI Automation | Real-Time Collaboration Apps 🤝 Why Clients Trust Me: ✔️ Over a decade of delivering scalable, production-grade platforms ✔️ Deep understanding of FinTech & HealthTech regulations and architecture ✔️ Clean, maintainable code that balances speed with long-term stability ✔️ Proactive communication and product-driven mindset ✔️ Consistent 5⭐ client satisfaction, repeat partnerships & referrals 🌍 Trusted by global startups and enterprises for reliable execution, transparent communication, and solutions that balance innovation with precision. 💬 "Fahad is able to clearly communicate, act as a team player and a team leader, will ask the right questions and takes pride in his work. He is a capable engineer and manager and will be an amazing addition to any team who is lucky enough to work with him." — Client Feedback ✨ Key Skills: Full Stack Web Development: Ruby on Rails, React.js, Next.js, Node.js, Laravel, Java Spring Boot, TypeScript, TailwindCSS, Vue.js, Express.js, RESTful APIs, GraphQL, WebSockets, JWT, OAuth, MVC Architecture, Microservices Frontend Engineering: React.js, Next.js, Redux, TypeScript, TailwindCSS, Material UI, Ant Design, Styled Components, HTML5, CSS3, Sass, Responsive Design, UI/UX Optimization, GSAP Animations, Three.js Backend Development: Ruby on Rails, Node.js, Express.js, Laravel, Java Spring Boot, Flask, FastAPI, Sidekiq, Redis, Celery, REST API Design, Authentication Systems, Background Jobs, Server-Side Rendering SaaS & Product Engineering: Multi-tenancy Architecture, Subscription Systems, Billing Automation (Stripe, PayPal, Plaid), Analytics Dashboards, Admin Panels, RBAC (Role-Based Access Control), System Audits, Performance Optimization FinTech & HealthTech Expertise: Plaid API, Stripe, Twilio, HIPAA Compliance, Secure Data Architecture, Banking Integrations, Payment Gateways, Financial Dashboards, Record Management, Patient Scheduling, EHR Systems Cloud, DevOps & Infrastructure: AWS (EC2, S3, Lambda, RDS, EKS), Docker, Kubernetes, Heroku, CI/CD Pipelines (GitHub Actions, Jenkins), Terraform, Serverless Framework, Load Balancing, API Gateway, Monitoring & Scaling Database & Data Management: PostgreSQL, MongoDB, MySQL, DynamoDB, Firebase, Supabase, Prisma ORM, Data Modeling, Query Optimization, Caching, Redis Testing & QA: RSpec, Jest, Cypress, Selenium, Unit Testing, Integration Testing, TDD/BDD, Code Review, CI Test Automation Version Control & Collaboration: Git, GitHub, Bitbucket, GitLab, Agile Methodologies, Scrum, JIRA, Trello, Asana, Notion, Documentation Mobile Development: React Native, Flutter, Swift, Kotlin, Android Studio, Xcode, Cross-Platform App Development, API Integration Security & Compliance: HIPAA, OAuth 2.0, JWT, Data Encryption, OWASP, Role-Based Access, Secure Code Reviews, GDPR 𝐋𝐞𝐭’𝐬 𝐝𝐢𝐬𝐜𝐮𝐬𝐬 𝐲𝐨𝐮𝐫 𝐩𝐫𝐨𝐣𝐞𝐜𝐭 𝐚𝐧𝐝 𝐛𝐮𝐢𝐥𝐝 𝐚 𝐬𝐜𝐚𝐥𝐚𝐛𝐥𝐞, 𝐡𝐢𝐠𝐡-𝐩𝐞𝐫𝐟𝐨𝐫𝐦𝐚𝐧𝐜𝐞 𝐰𝐞𝐛 𝐚𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧 𝐭𝐡𝐚𝐭 𝐝𝐫𝐢𝐯𝐞𝐬 𝐫𝐞𝐬𝐮𝐥𝐭𝐬. 𝐈’𝐦 𝐫𝐞𝐚𝐝𝐲 𝐭𝐨 𝐬𝐭𝐚𝐫𝐭 𝐢𝐦𝐦𝐞𝐝𝐢𝐚𝐭𝐞𝐥𝐲.

I architect and engineer high-performance SaaS platforms, enterprise REST APIs, and intelligent automation workflows. With 6+ years of professional software engineering experience and over 130 successfully delivered projects, I specialize in bridging the gap between complex, heavy-duty backend infrastructure and seamless, high-converting user experiences. I don't just write code; I partner with businesses to build scalable, secure, and easily maintainable digital products. ► What I Build: Enterprise SaaS Platforms: End-to-end development including multi-tenant architecture, secure payment gateways (Stripe/Paddle), and subscription management. High-Traffic APIs & Backend Systems: Designing RESTful APIs capable of handling millions of daily requests with sub-100ms latency, robust authentication, and fault tolerance. AI & Workflow Automation: Integrating intelligent AI APIs (voice, communication, and routing) and custom automation solutions to streamline complex business processes. High-Performance Frontends: Building responsive, modern Single Page Applications (SPAs) focused on flawless Core Web Vitals, fast load times, and intuitive UI/UX. ► Core Tech Stack: Backend: Java, Spring Boot, Microservices, REST APIs Frontend: Angular, TypeScript, JavaScript, HTML5/CSS3 Cloud & Database: AWS, Docker, PostgreSQL, MySQL Optimization: Technical SEO, PageSpeed enhancement, GSAP animations ► The Consultant Difference: High-value projects require more than just technical skills. When you work with me, you get a product-minded engineer who prioritizes clean architecture, systematic code reviews, and transparent communication. I treat your infrastructure with the same rigor that allowed me to maintain 99.9% uptime SLAs for global enterprise clients. Whether you are a startup needing a custom platform built from scratch, or an established business seeking to optimize your architecture and automate workflows, let's connect. Send me a message with a brief overview of your project, and we can discuss the best technical roadmap to bring your vision to life.

✨ Seasoned software professional with 20+ years of experience in end-to-end software development, including 8+ years specializing in Big Data technologies and cloud-based solutions. Proven expertise in building scalable, high-performance data platforms using Apache Spark, Hadoop, Hive, Cassandra, and programming in Scala, Python, Java and C++. ✨ I focus on designing robust, enterprise-grade Big Data and Data Engineering architectures on GCP, AWS, and Azure, both in on-prem and cloud environments. My role involves solution architecture, technical leadership, and hands-on development of critical components. ✨ I am passionate about leveraging my experience to build cutting-edge data and AI solutions. Open to senior technical roles, consulting opportunities, and innovative startup environments. 🔹 Keen eye on scalability, sustainability of the solution 🔹 Can come up with maintainable & good object-oriented designs quickly 🔹 Highly experienced in seamlessly working with remote teams effectively 🔹 Aptitude for recognizing business requirements and solving the root cause of the problem 🔹 Can quickly learn new technologies 🔹 Transparency, Dedication, Qualtity and Satisfaction Guaranteed Sound experience in following technology stacks: ✨ Big Data: Apache Spark, Spark Streaming, HDFS, Hadoop MR, Hive, Apache Kafka, Cassandra, Google Cloud Platform (Dataproc, Cloud storage, Cloud Function, Datastore/Firestore, Pub/Sub), Cloudera Hadoop 5.x ✨ Languages: Scala, Python, Java, C++, C, Scala with Akka and Play frameworks ✨ Build Tools: Sbt, Maven ✨ Databases: Postgres, Oracle, MongoDB/CosmosDB ✨ GCP Services: GCS, DataProc, Cloud functions, Pub/Sub, Data-store, BigQuery ✨ AWS Services: S3, VM, VM Auto-scaling Group, EMR, S3 Java APIs, Redshift, MongoDB ✨ Azure Services: Blob, VM, VM scale-set, Blob Java APIs, Synapse, CosmosDB ✨ Other Tools/Technologies: Kubernetes, Dockerization, Terraform Worked with different types of Input & Storage formats: CSV, XML, JSON file, Mongodb, Parquet, ORC

I build AI systems that solve hard, real-world problems. Recently I developed a dual-camera computer vision system that analyzes bodybuilding exercise form in real time, tracking body keypoints, scoring movement quality frame by frame, and delivering actionable feedback through a clean interface. The client came back with more work. That's the standard I hold myself to. My focus is on the intersection of AI and practical engineering: → Computer vision and pose estimation systems → Machine learning model development and deployment → LLM integration and AI-powered applications → Python backends and data pipelines → End-to-end delivery, from model to working product I have an engineering degree and a strong foundation in mathematics and algorithms. I don't just run pre-built models. I understand what's happening inside them, which means I can debug, optimize, and adapt when things get complicated. I work with clients who have problems that are a step beyond what a typical developer can handle. If that's you, let's talk.