I am a Senior Software Developer with 3+ years of experience building scalable backend systems, production-grade APIs, distributed services, and AI-powered applications. My expertise lies in designing end-to-end software solutions, translating complex business requirements into reliable systems, and delivering measurable improvements in performance, automation, and operational efficiency. I specialize in backend development using Python, TypeScript, Node.js, and NestJS, with hands-on experience in REST APIs, microservices, asynchronous processing, event-driven architectures, and database optimization. I have worked on systems supporting millions of daily transactions across thousands of facilities, with a strong focus on scalability, reliability, data integrity, and maintainability. My recent work includes architecting an automated workforce planning engine spanning APIs, orchestration services, and data warehouse pipelines. The solution replaced manual spreadsheet-based planning, supported 50+ work-area and workstation combinations per facility, and reduced planning cycle time by 62%. I have also designed and developed an AI-powered visual matching platform using Gemini Vision and FastEmbed ONNX. The system extracts visual metadata, generates embeddings, and ranks candidate matches to automate the resolution of previously unlabelled items, improving operational throughput by approximately 88%. My experience extends to cloud infrastructure and DevOps, including AWS, Docker, Kubernetes, CI/CD pipelines, Redis, PostgreSQL, MySQL, DynamoDB, Elasticsearch, and observability tools. I have contributed to microservice migrations, infrastructure cost optimization, performance tuning, and integrations involving external systems and hardware automation. I am particularly interested in applying AI and automation to practical business problems. I enjoy combining conventional software engineering with LLMs, computer vision, embeddings, and intelligent workflows to build solutions that go beyond prototypes and work reliably in production. I bring an ownership-driven approach to freelance projects, from requirement analysis and system design to implementation, testing, deployment, and ongoing improvements. My focus is on writing clean, maintainable code and delivering secure, scalable, and cost-effective solutions that solve real problems.

I’m a Software Engineer with a strong interest in building products that solve real-world problems. Over the last couple of years, I’ve had the opportunity to work on different types of products, from mobile and web applications to AI-powered platforms, real-time systems, and 3D geospatial applications. My core experience is with Flutter, React, TypeScript, FastAPI, and modern backend and cloud technologies. I’ve worked on products where I was involved not just in writing code, but in taking features from an idea or requirement all the way to production. For example, I’ve worked on EdTech platforms where I built mobile applications and web panels, integrated 70+ APIs, implemented real-time chat and notifications, and worked with payment systems such as Apple Pay, Google Pay, in-app purchases, and other payment gateways. I’ve also been involved in production deployments and app-store releases, which helped me understand that building a good product is about much more than just writing code. I’ve also worked on AI-focused products, where I’ve built features around LLM-powered search, document citations, authentication, real-time communication, and AI-driven workflows. This experience taught me how to take AI capabilities and turn them into practical features that users can actually interact with. Another interesting part of my experience has been working with 3D geospatial applications using technologies like CesiumJS and Resium. I’ve worked on terrain-aware visualizations, altitude handling, sensor data, and interactive map-based workflows. These projects gave me experience working with complex technical requirements while keeping the final experience simple and usable. I also put a lot of importance on reliability and maintainability. I’ve worked with Jest, Vitest, Testing Library, Cypress, and Patrol for automated and end-to-end testing, and I try to write code that is clean, scalable, and easy for other developers to understand and build on. The kind of problems I help clients solve are usually around turning ideas into working products, improving existing applications, integrating APIs and third-party services, adding AI or real-time capabilities, improving reliability, and taking products from development to production. What I bring is a combination of development experience and a product-focused mindset. I like understanding the actual problem first, then choosing a practical technical solution rather than overcomplicating things. My goal is to build software that works well today, provides a good user experience, and can continue to grow as the product evolves.

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I’m a Full Stack Software Developer with 4+ years of professional experience building and maintaining production-ready web applications, ERP systems, REST APIs, and business solutions using Python and Django. My primary expertise is backend development with Django and Django REST Framework, with strong experience in designing REST APIs, database architecture, authentication, business logic, and PostgreSQL optimization. I also work with React for frontend development and have experience integrating modern web interfaces with scalable backend services. In my current role, I’ve contributed to and developed 30+ applications and business systems used across different departments and real-world client projects. My work includes ERP and HR systems, mentoring platforms, appointment and content-management systems, examination automation, reporting platforms, and other workflow-based applications. I focus on building solutions that are reliable, maintainable, and practical for real business requirements. I have developed 25+ production APIs and worked on applications supporting thousands of concurrent users. Through database optimization, query improvements, caching, and backend performance tuning, I have helped improve API response times by approximately 30–40% in specific applications. My core expertise includes: • Python & Django • Django REST Framework (DRF) • REST API development and integration • PostgreSQL & database optimization • React.js • Authentication and role-based access control • Redis and caching • Celery and asynchronous task processing • HTML, CSS, JavaScript and Bootstrap • Git and collaborative development • API performance optimization • ERP and workflow I can help with developing a new application from scratch, improving an existing Django project, building REST APIs, integrating frontend applications, optimizing database queries, fixing backend issues, or converting business requirements into a reliable software solution. I approach projects with a strong focus on clean code, clear communication, maintainability, performance, and delivering solutions that solve the actual business problem—not just implementing technology for its own sake.

Cloud and Infrastructure Engineer with hands-on experience in designing, automating, and supporting scalable cloud infrastructure and CI/CD environments. Experienced in Microsoft Azure, Kubernetes/AKS, Docker, GitHub Actions, Linux, and cloud automation, with a strong focus on infrastructure reliability, deployment automation, and DevOps practices. Core Expertise * Cloud Platforms: Microsoft Azure, Azure Kubernetes Service (AKS), Azure Container Registry (ACR) * Containerization & Orchestration: Docker, Kubernetes, AKS, containerized application environments * CI/CD & DevOps: GitHub Actions, automated build and deployment pipelines, workflow automation * Infrastructure Automation: Infrastructure provisioning, configuration automation, environment setup, deployment automation * Scripting & Automation: Python, Shell scripting, automation of repetitive infrastructure and deployment tasks * Version Control: Git, GitHub, repository and branch management * Cloud Infrastructure: Compute, networking, storage, container infrastructure, environment configuration and troubleshooting * Monitoring & Troubleshooting: Application and infrastructure troubleshooting, pipeline/log analysis, failure investigation and resolution * Security & Access: Cloud access management, authentication, credentials/tokens, secure CI/CD practices * Automation & Integration: REST APIs, automated job execution, API-based pipeline integration, data processing and reporting * Linux & DevOps Environment: Linux-based systems, command-line tools, Docker environments, build and deployment infrastructure Professional Focus * Building and maintaining reliable cloud infrastructure and Kubernetes environments * Automating CI/CD pipelines and infrastructure workflows * Improving deployment efficiency through Python and scripting automation * Troubleshooting complex cloud, container, pipeline, and infrastructure issues * Designing scalable and maintainable DevOps and cloud solutions * Supporting migration and modernization of workloads toward cloud-native infrastructure * Implementing repeatable and automated processes for software delivery and infrastructure operations

I’m a Flutter Developer with 5+ years of experience building production-ready mobile and web applications. I specialize in Flutter, Dart, Firebase, REST APIs, BLoC, and AI integrations. I’ve built and shipped applications across business, education, POS, and AI use cases. I focus on clean architecture, smooth user experiences, reliable integrations, and delivering features that are ready for real users. Whether you’re building a new product or improving an existing app, I can help turn your requirements into a scalable, production-ready solution.on-ready application.

I’m Abhishek Dana, a software engineer and frontend developer with experience building and improving web and mobile applications. I enjoy turning product ideas and designs into clear, reliable user experiences, and I’ve worked across the full development cycle—from understanding requirements and shaping interfaces to implementation, deployment, and ongoing support. My core expertise is frontend development with Angular, React, TypeScript, JavaScript, HTML, CSS, and Tailwind CSS. I’ve also built mobile applications using Ionic, Capacitor, Flutter, and native Android technologies. I work with tools and libraries such as React Query, React Hook Form, Zod, and Radix UI to create responsive interfaces and maintainable application structures. In my professional roles, I’ve helped develop and maintain mobile applications, implement features from Figma designs, resolve production issues, and collaborate with product, design, and engineering teams. At Hero Vired, I took ownership of a major application redesign and supported releases to the App Store and Google Play. At Xebia, I’ve contributed to the development and maintenance of mobile applications for Yes Bank, including new features, UI improvements, and defect fixes. I’m also comfortable working across the stack when a project calls for it. My experience includes building APIs with NestJS, working with PostgreSQL and Supabase, and integrating services for authentication, payments, email, and notifications. I’ve worked with Firebase, MySQL, Oracle, and MongoDB, as well as deployment and development tools including GitHub, Docker, Vercel, and Netlify. Across freelance and personal projects, I’ve worked on products spanning education, recruitment, finance, health, and loyalty programs. These projects have strengthened my ability to adapt to different product needs, take ownership of features, and balance thoughtful UI design with practical engineering decisions. I hold an MCA from Amity University Noida, completed in 2023. I’m interested in building useful products, improving the details that make software easier to use, and continuing to grow as an engineer across modern frontend and full-stack technologies.

I’m a Full Stack Developer with hands-on experience building mobile applications, web platforms, backend systems, and production deployments. My primary technologies are Flutter, Django, Django REST Framework, React.js, PostgreSQL, Firebase, and AWS. I have worked on healthcare platforms, business applications, admin dashboards, booking systems, inventory management, and real-time communication features. At Techfifo Innovations, I worked on Denze, a multi-portal healthcare platform built with React.js, Django, DRF, PostgreSQL, and JWT. My work included role-based access control, REST APIs, reusable frontend components, appointment and billing workflows, inventory management, patient management, and clinical features such as an SVG-based dental charting system. I also worked with PostgreSQL transactions and row locking for safer inventory operations. Flutter is another major part of my experience. I have developed cross-platform applications for healthcare, business, IoT, and other use cases. I have worked with Firebase Authentication, Firestore, Cloud Storage, FCM notifications, native Android services using Kotlin, Bluetooth printers, and location-based features. I also have experience with real-time technologies. I have worked with WebSockets and independently built Privtalk, a Flutter-based communication application using WebRTC and Firebase for messaging, audio and video calling, push notifications, background call handling, and reconnect logic. On the backend and infrastructure side, I have developed REST APIs using Django, DRF, and FastAPI and deployed applications on AWS EC2 using Nginx, Gunicorn, Linux, and Let's Encrypt SSL. I have also worked with GitHub Actions for CI/CD and production deployments. Alongside application development, I have explored AI and machine learning using PyTorch and HuggingFace Transformers. My projects include a physics-informed neural network, a fine-tuned conversational model, and a multilingual audio transcription API using Google Cloud Speech-to-Text. I like working on practical problems and understanding how the different parts of a system fit together. My current focus is on becoming stronger in backend engineering, cloud and DevOps, system architecture, real-time applications, and AI/ML while continuing to build and deploy real-world software.

Portfolio: https://vaishnavdatir.github.io/Portfolio/ I’m a Senior Full Stack Developer with 3.5+ years of professional experience building scalable, reliable, and production-ready software solutions. I specialize in Java, Spring Boot, Spring Batch, REST APIs, microservices, React.js, Flutter, and modern database systems including Oracle and MySQL. My expertise spans the complete development lifecycle, from designing backend architectures and optimized APIs to building responsive user interfaces, integrating databases and messaging systems, and deploying cloud-ready applications. I have hands-on experience with Kafka, Azure, Docker, Kubernetes, CI/CD, and enterprise integrations. I focus on writing clean, maintainable code and building solutions that are performant, secure, and easy to scale. Whether it’s developing a full-stack application, modernizing an existing system, integrating third-party services, or solving complex backend problems, I bring a practical, engineering-focused approach from requirements to production.

Results-driven and highly proficient Senior Android Developer with 8.5 years of professional experience designing, developing, and scaling robust mobile applications for international markets, including the United States, Australia, and Germany. Adept at translating complex business requirements into intuitive, high-performance, and user-centric mobile solutions. Possesses deep technical expertise in modern Android development frameworks, architectural patterns, and full software lifecycle management across a diverse portfolio of industry domains. ​Core Technical Competencies ​Programming Languages: Kotlin (Expert), Java (Proficient) ​UI Frameworks & Tooling: Jetpack Compose, XML Layouts, Material Design 3, ConstraintLayout, Custom Views, View Binding, Data Binding ​Architectural Patterns: MVVM (Model-View-ViewModel), MVI (Model-View-Intent), Clean Architecture, Repository Pattern, Dependency Injection (Hilt, Dagger) ​Jetpack Components & Libraries: ViewModel, LiveData, StateFlow, Room Database, Paging, Navigation, WorkManager, CameraX ​Networking & Data Handling: Retrofit, Ktor, OkHttp, GraphQL, RESTful APIs, JSON/XML parsing, Protocol Buffers ​Asynchronous Programming: Kotlin Coroutines, Flow, RxJava ​Testing & Quality Assurance: JUnit, Mockito, MockK, Espresso, UI Automator, Code Coverage tools (SonarQube) ​CI/CD & DevOps: GitHub Actions, GitLab CI, Bitrise, Fastlane, Firebase App Distribution, Automated Testing Pipelines ​Cloud & Backend Integration: Firebase (Firestore, Cloud Messaging, Crashlytics, Analytics, Authentication), AWS Mobile Services ​Methodologies: Agile, Scrum, Kanban, Jira, Confluence, TDD (Test-Driven Development), CI/CD practices ​Professional Domain Experience ​Leveraging versatile engineering principles, I have successfully delivered high-impact products across multiple complex industries: ​Healthcare: Developed secure, HIPAA-compliant applications focusing on patient data management, real-time appointment scheduling, and telehealth integration with strict emphasis on data security and privacy. ​Insurance: Built secure policy management, claims submission, and real-time document verification tools requiring robust offline capabilities and encrypted local storage. ​Food Delivery: Engineered high-concurrency, low-latency client and delivery partner applications featuring real-time map tracking (Google Maps SDK), live order status streaming, and seamless payment gateway integrations. ​E-Commerce & C2P (Classifieds / Selling Old Stuff): Architected dynamic catalog listings, in-app chat systems, advanced search/filter modules, and secure peer-to-peer transaction workflows. ​School Management: Designed multi-role administrative and parental portals for attendance tracking, grade reporting, fee payments, and push notification-based announcements. ​Telecom: Created self-care applications enabling users to monitor data usage, manage billing, purchase plans, and troubleshoot network connectivity through diagnostic utilities.