13 years shipping backend systems. The last 3 focused on AI agents, LLM integrations, and serverless architectures. I connect Claude and OpenAI to real business data — fast, clean, and production-ready. I work at the intersection of applied AI and backend engineering. That means I can take an AI integration from spec to live deployment — API design, auth, edge infrastructure, and connector setup included. What I build: - AI agents and LLM workflows (Claude, OpenAI, custom MCP servers) - Serverless backends: Cloudflare Workers, AWS Lambda, edge APIs - IoT and real-time data pipelines - Full-stack platforms: Next.js, Node.js, TypeScript - Enterprise SaaS and cloud accounting systems - Generative AI integrations across IaaS and SaaS platforms How I work: - Claude Code and Cursor are core to my workflow — senior-level output, delivered faster - Async-friendly: written updates throughout, no black-box development - I flag real issues before touching scope — never surprise changes - Clean code, deployment docs, and handoff notes every time A few things I've shipped: - Autonomous drone platform with real-time telemetry and control backend - IT talent matching portal for high-volume enterprise use - IoT energy tracking system with multi-sensor data pipelines - Cloud accounting platform with multi-entity financial reporting If you're building an AI-powered product, an enterprise backend, or a custom LLM integration — let's talk.

Hands on Data architect & Lead data engineer, with 12+ years of experience in designing & building end to end high velocity, high volume peta byte real time & batch data platforms from scratch on clouds & on-prem. Kubernetes native development from the beginnig. I develop distributed & scalable back-end systems using using languages like goLang, Rust & python. Lately Started working on integration of AI, RAG, MCP Servers & MLops Platforms into data platforms. Developed self hosted llms applications using Ollama and llm observability using langfuse. Mordenize existing data platforms with AI first approach. Hybrid semantic mapping layers or unstructured and structured data using heuristics, memory and LLMs. Built & worked on peta byte scale streaming, batch data & AI platforms in top companies. An open source contributor to data technologies & products like Airbyte etc. Love working on database internals, performance and optimizations. I have experience working with telemetry data, payments data, video data, sports data, eCommerce data & affiliate marketing data, logs data, clickstream data. Skill Set: Big Data Technologies: Spark, Kafka, Flink, Presto, Dremio, Hudi, Deltalake Data warehouses: Snowflake, Druid, Clickhouse, Redshift, SingleStore(Memsql), Quest Databases: Postgres, Mysql, Cassandra, DynamoDB, DuckDB Programming languages: Golang, Python, Rust, Scala, Java Visualization: Tableau, Apache Superset, Zoomdata Data Technologies - Airbyte, Fivetran, Dagster, Airflow, Nifi, Kubeflow, ElasticSearch, OpenSearch Platforms: Databricks, Snowflake, Cloudera, Supabase, Aiven Ops: Kubernetes, Docker Cloud: AWS, GCP, Azure

Expert-Vetted AI & Full-Stack Engineer | 100% Job Success | 30+ Projects | $170K+ Earned Past Experience : Goldman Sachs, Morgan Stanley, KPMG, Oracle & Others I help startups and enterprises ship AI products and the backend systems behind them — from RAG chatbots and LLM integrations to scalable APIs, data pipelines, and production deployments. 10+ years building software. 30+ Upwork projects, all 5-star rated. Expert-Vetted (top 1%). One engineer who can own the problem from architecture to live product — clear communication, on-time delivery, code that scales. WHAT I BUILD AI & LLM • RAG chatbots and knowledge assistants over PDFs, docs, wikis, Notion, and internal APIs • LLM integration with OpenAI (GPT-4o, GPT-4), Anthropic Claude, and Google Gemini • AI agents with tool use — CRM, email, Slack, webhooks — plus guardrails and human approval • Streaming chat UIs with conversation memory, citations, and admin dashboards • LangChain, LlamaIndex, vector search (Pinecone, pgvector, Chroma, Weaviate, Qdrant) Backend & APIs • REST and GraphQL APIs in Python (FastAPI, Django, Flask), Node.js, and Java/Spring Boot • Microservices, event-driven architecture, authentication, and third-party integrations • PostgreSQL, Redis, MongoDB — schema design, optimization, migrations • Data pipelines with Kafka, Spark, and Airflow for analytics and ETL Frontend & Cloud • React, TypeScript, Next.js, Angular — SaaS dashboards and polished product UIs • AWS, GCP, Azure — Docker, CI/CD, monitoring, production hardening WHY CLIENTS HIRE ME Most AI projects break at the seams — weak APIs, messy data ingestion, no real UI, nothing deployed. I deliver the full path: data in → embeddings & retrieval → LLM → API → frontend → cloud.

Full Stack Developer with: * Exceptional 5.0⭐️ feedback * 100+ happy clients with 100% Success Score [WHAT SETS ME APART] ⚡ No one-size-fits-all solutions. Every product is unique, and so is the approach Let me tailor your project for scalability, efficiency, and long-term success ⚡ Value Upfront with Business Analysis. Before a single line of code is written, the best strategy, key workflows, and feature prioritization should be mapped out. ⚡ End-to-End SDLC Expertise. From discovery to deployment, let me and my team cover all stages of the software development lifecycle SDLC - minimizing risks and maximizing efficiency ⚡ Transparent & Agile. Expect weekly updates and a results-driven approach - so you always know where your project stands. Great products don’t build themselves. Let’s make yours happen - drop me a message, and we’ll kick things off! P.S. For new users: click the “Invite” button in the top-right corner of this page, and our discussion will start right away ⚡ [BONUS PACKAGE]: As the Founder & CEO of Softonix, I’ve helped over 100 clients navigate complex tech challenges - balancing speed, scalability, and cost-effectiveness. Having a team of engineers behind me means clients get the best of both worlds - the flexibility of a freelancer with the reliability of a full-scale team when needed. Flexible engagement options based on your web development project needs: 🔹 Staff Augmentation – Need extra hands on your project? Or specifically a React developer for a specific period? Get an experienced developer embedded into your existing team, ensuring a smooth workflow and increased development velocity. 🔹 Turnkey Project - Looking for a fully managed, end-to-end development solution? From architecture to deployment, let me handle everything - delivering a market-ready product with a structured, milestone-based approach. SEO Keywords section: Looking for a web developer? I work as a Full Stack Developer and web developer, take on front-end projects as a React developer, support CMS sites as a WordPress developer, and build cross-platform apps as a mobile app developer. Though temporarily I do not have blockchain developer capacity, I’m focused on one particular pet project built on React Full Stack Web Developer at your service with 15 years of experience with Vue, React, Node expertise and .net developer as a .net software engineer proficient with .net core angular I have a mobile app developer capacity in my team RN along with Full Stack Developer react So if you`re looking for mobile app developer - let`s connect Industry-Specific Terms for me as Full Stack Developer ASP.NET backend Vue* frontend E-commerce Development: Specializing in building scalable and secure e-commerce platforms. Fintech Solutions: Experience in developing financial technology applications with a focus on security and compliance. Healthcare IT: Expertise in creating healthcare applications that prioritize data privacy and user experience. North America and USA Providing web development services to clients across the United States and Canada as Full Stack Developer Europe Collaborating with European businesses to deliver tailored software solutions as a Senior Full-Stack Developer needed for your SaaS project? Engaging with clients in the Asia Pacific region for innovative tech projects as a Fullstack Developer My team composition: Full-stack developer, Full-stack developer , Full-stack developer, and Full Stack developer, Full Stack developer and Full Stack developer, fullstack and fullstackdeveloper, + fullstack developer If you’re looking for a fullstackdeveloper who can everything from front-end interaction to backend architecture, you’re in the right place. As a wordpressfullstack expert and fullstackweb developer, I build fast, secure, and scalable websites tailored to your business goals. With 10 years of experience as a seniorfullstackdeveloper, I specialize in creating custom solutions including ux ui design and ui ux design. Whether you need advanced functionality or clean, optimized code, my javascriptfullstack skills ensure your project performs flawlessly across platforms and all timelines with TailwindCSS for SPA and PWA on web app reactdeveloper Lately my team shifted from Unity to Swift and SWIFTUI for mobile app and Lovable for rapid prototyping of small MVP rapidly Full stack developer ai with 15 years of experience in ASP.Net core and .Net back-end with Azure microservices and IoT devices with BLE connection long term invite using Claude code AI on vue nuxt Proficient in LLM Integrations and AI API integration 10 years of .NET, dotnet, *net and net* backend experience using asp.net and mvc full stack development + Azure Nuxt SEO SSR on Upwork

🏆 Tailor My Services to Fit Your Goals! Specializing in GenAI, MLOps, DevOps, Cloud & Security with a great knowledge and experience. Looking for challenging new projects where I, Harshit Wadhawan can utilize my complete potential and skills up to the mark and provide industry required solutions. Well-versed in the latest AI models, operating systems, network and system administration & devops techniques, hence seeking for a position where my hands-on self motivating passion with technology provides me with a unique understanding of how to balance conflicting requirements and bring complex enterprise level IT projects to successful completion. I Harshit Wadhawan, have the ability to work individually as well as co working with a team, Harshit Wadhawan with demonstrated results in a leading and contributing to projects. I am a quick learner and have a vast skill set and have great troubleshooting skills to assist in any kind of necessity, as long as it is running on computer. * DevOps skills: — Automation for build and deploy of your app from Git repository to AWS, GCP, Azure, Digital Ocean etc. — Develop automation for Unix/Linux infrastructure with Bash scripting. — Develop Shell/Chef/Ansible code to automate server builds, OS patches, and deployment of applications to dev, test, and production environments. — Design reliable infrastructures for IT products that are migrated from on-premise or developed for AWS platform using infrastructure-as-a-code concept with tools like Terraform. — AWS CDK - Python, Typescript cdk infra 3 tier applications using services like ECS, RDS, S3, ALB, Secrets manager etc. — Write a custom monitoring and integrated monitoring methods into deployment processes to develop self-healing solutions on Linux VMs — Manage multiple AWS accounts, enforced network security, user/group permissions, service performance and cost. —Kubernetes - Creating/Managing clusters GKE, EKS, AKS. Deployment & management of workloads on K8s using helm charts. * AWS skills: — Designing and deploying scalable, highly available, and fault tolerant systems on AWS — Lift and shift of an existing on-premises application to AWS — Ingress and egress of data to and from AWS — Choosing the appropriate AWS service based on data, compute, database, or security requirements — Identifying appropriate use of AWS architectural best practices — Estimating AWS costs and identifying cost control mechanisms — Correctly using spot-instances in your project what makes your EC2 (ECS, EKS, EB) usage up to 80% cheaper! - GenAI, RAG, Gpt-4, PaLm, Llamha, Claude & other LLM models. - AI Agents with n8n, workflows, Automations - Vector DB like Milvus, ChromaDB etc.. * Common jobs that I have done: — Introduce startups and individuals to the benefit of AWS. — Containerize native applications (PHP, Python, Nodejs, Java, Scala, Ruby etc.) to run with AWS ECS/Docker including 1 step build & deploy (git push) using CICD tools (Jenkins, GitlabCI, AWS CodeCommit). — Troubleshooting VPC/Networking issues, communication between AWS resources, like Lambda and private RDS/ElastiCache/EC2/etc. — Harden security (IAM, VPC, Security Groups, S3 ACL, WAF, CloudTrail, etc.). — Setup serverless stack (Lambda, DynamoDB, S3, CloudFront). — Review proposed or existing AWS architecture for security, cost-optimization, HA, Backup, Performance, etc. — Setup secured access (openVPN, SSH tunnel) between on-premise and private subnets (VPC). Setup VPC Peering connection — Create CloudFormation templates for quick replication of AWS stack (deploy to multiple regions, easy to create and remove resources, etc.) OS: Linux (Redhat, Ubuntu, Debian, CentOS, FreeBSD), Windows (2008R2, 2012 R2, 2016) Web Servers: Apache, Nginx, Tomcat, JBoss. Databases: MySQL, MongoDB, PostgreSQL . Linux Administration - Server Setup, LAMP setup, Bash Scripting. Security Performance : IP filter, Fail2ban, IDS, WAF. Cloud Platforms: - AWS - Azure - GCP Web Hosting Platforms : - Cpanel - Plesk - DigitalOcean - Hostgator Networking - IPv4, DNS, DHCP, Design & Implement different network solutions based on the environment. Virtualization - Vmware ESX-i server setup, machine creation, backup etc. Citrix Xen server.

I build production GenAI systems and large-scale data platforms for defense contractors, Fortune 500s, and high-growth startups. Not prototypes — production. Current engagements: • Databricks SME — embedded with a Fortune 100 entertainment customer (NDA) • Data Lead on a General Dynamics defense program — LLM knowledge graphs, Airflow/Spark/AWS at terabyte scale (via NDA'd prime subcontractor) GENAI & LLM SYSTEMS — RAG architectures with LlamaIndex, Microsoft GraphRAG, and Qdrant (hybrid search, not toy demos) — Multi-agent AI workflows (CrewAI, AWS Bedrock) for stateful automation — LangChain tool development — built and published an open-source SEC data plugin — Computer vision (USPTO-patented algorithm) DATA PLATFORMS & DATABRICKS — Databricks SME — embedded at a Fortune 100 entertainment customer (NDA). I know the platform at the internals level. — Apache Spark pipelines at terabyte scale — $3M/year in compute savings at Riot Games — Real-time streaming: Kafka clickstream platform at 3M+ records/hour — Full AWS stack: S3, Athena, RDS, Kinesis, Lambda, SageMaker, Airflow, Glue — Python, Scala, Golang — production code in all three WHERE I'VE DONE IT — Databricks (current) — SME, embedded at a Fortune 100 entertainment customer (NDA) — General Dynamics defense program (current) — GenAI knowledge graphs (via prime subcontractor, NDA) — Riot Games (3 yrs) — Senior Data Engineer, $3M/yr Spark savings, GenAI hackathon winner — Torchlight (3 yrs) — geospatial intelligence, petabyte-scale behavioral analytics — Adyton PBC — real-time behavioral pipelines for security & defense 100% Job Success · 4,400+ hours · Patent holder · UC Riverside CS · DoD Secret clearance — interim (lapsed 2026, reinstatement eligible)

❇️ Experienced Software Engineer (TS, Java, Scala) ❇️ Technical Leader ❇️ Expert in Enterprise Web Apps, Microservices, Serverless, Full-stack, Functional programming

I am a full-stack software engineer with deep expertise in Scala, backend architecture, concurrency, and functional programming. My Scala background has given me strong foundations in building correct, maintainable, and high-performance systems, which I also apply across Java, JavaScript, and full-stack projects. Over the course of my career, I have built a wide range of systems, including a SoftBank-backed farming yield predictor, the first Ripple crypto gateway in Japan, an order routing system for the Thai stock exchange, and a California-based SaaS kitchen management platform. Key strengths - Strong full-stack range across Scala, Java, JavaScript, React, Next.js, Vue, Nuxt.js, Android, and Flutter - Deep Scala expertise with strong foundations in functional programming, concurrency, and maintainable backend architecture including Cats, Akka, Zio, Monix, and Spark - Experienced backend and API developer across Spring, Play, Vert.x, and AWS Lambda environments - Experienced with AWS and GCP infrastructure, configuration, and cloud-based system design - Focused on building testable, maintainable systems with low technical debt - Solid background in multithreaded systems, memory optimization, and data pipelines - Certified AWS Solutions Architect Associate, Oracle Java 8 Associate Programmer - Top 5% on Stack Overflow.

A small boutique firm (meghgen.com) delivering exceptional results in the Cloud and Data Engineering world - Harnessing the power of AI/Gen AI to Reimagine how Cloud and Data Engineering projects should be done and executed. - Passionate and skilled in Google Cloud and Data Engineering across AWS, GCP, Azure, Snowflake, and Databricks - Diverse industry experiences spanning Retail, Fintech/Banking, Healthcare/Life Sciences Tech Expertise ------------------ ● AWS Cloud Platform - Amazon Kinesis, Redshift, Amazon EMR, Athena, Glue, S3, RDS, EKS, Airflow ● Google Cloud Platform - Apache Beam/Dataflow, Dataproc with Spark, Airflow/Cloud Composer, BigQuery, Data Studio, Jupyter Notebooks/AI Notebooks, GCS, etc. ● Azure - Data Pipelines ● Programming languages: Python, Scala, Java ● Kafka: Expertise in building event processing data data pipelines using Kafka, ZooKeepers, KSQL, KStream and Kafka Control Center ● Debezium - CDC ● Apache Iceberg

🔝 𝐓𝐨𝐩-𝐑𝐚𝐭𝐞𝐝 𝐅𝐫𝐞𝐞𝐥𝐚𝐧𝐜𝐞𝐫 𝐨𝐧 𝐔𝐩𝐰𝐨𝐫𝐤 🚀 𝗦𝘁𝗿𝘂𝗴𝗴𝗹𝗶𝗻𝗴 𝘄𝗶𝘁𝗵 𝘀𝗹𝗼𝘄 𝗱𝗮𝘁𝗮 𝗽𝗿𝗼𝗰𝗲𝘀𝘀𝗶𝗻𝗴 𝗼𝗿 𝘂𝗻𝗿𝗲𝗹𝗶𝗮𝗯𝗹𝗲 𝗘𝗧𝗟 𝗽𝗶𝗽𝗲𝗹𝗶𝗻𝗲𝘀? 𝗜 𝗯𝘂𝗶𝗹𝗱 𝗮𝗻𝗱 𝗼𝗽𝘁𝗶𝗺𝗶𝘇𝗲 𝗵𝗶𝗴𝗵-𝗽𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 𝗱𝗮𝘁𝗮 𝘀𝘆𝘀𝘁𝗲𝗺𝘀 𝘁𝗵𝗮𝘁 𝘁𝘂𝗿𝗻 𝗺𝗮𝘀𝘀𝗶𝘃𝗲 𝗱𝗮𝘁𝗮𝘀𝗲𝘁𝘀 𝗶𝗻𝘁𝗼 𝗮𝗰𝘁𝗶𝗼𝗻𝗮𝗯𝗹𝗲 𝗶𝗻𝘀𝗶𝗴𝗵𝘁𝘀. With 4+ years of professional experience, I have worked as a Data Engineer at world-class tech giants Xiaomi (Fortune Global 500) and Shopee ($80B Market Cap). My expertise lies in transforming complex data challenges into seamless, efficient, and scalable data workflows. ⭐ How I Can Elevate Your Business: ✔ End-to-End ETL/ELT Pipeline Development: I architect and build fully automated data pipelines using Airflow and Apache Spark (Scala/Python/Java), ensuring timely and accurate data for your analytics and machine learning models. ✔ Spark Performance Tuning & Optimization: Is your Spark job running slow or failing? I specialize in deep-diving into Spark applications to diagnose bottlenecks, optimize resource utilization (memory/CPU), and significantly cut down processing time and cost. ✔ Big Data Architecture & Solutions: Leveraging modern data stack tools like Kafka, Flink, Hadoop (HDFS, Hive), and Druid, I design and implement scalable Data Lakes and Data Warehouses tailored to your specific business needs. ✔ Data Quality & Integrity: I implement rigorous data cleaning and validation processes, transforming raw, messy data into a pristine, reliable asset for your decision-making. ⭐ Core Technical Skills: ✔ Big Data Ecosystem: Apache Spark, Airflow, Kafka, Flink, Hadoop, Hive, HDFS, Druid ✔ Programming: Scala, Python, Java, SQL ✔ Databases: HBase, Redis (NoSQL), Relational SQL Databases ✔ Platforms: Data Lake, Data Warehouse, AWS, GCP ⭐ What Sets Me Apart: ✅ Problem-Solver, Not Just a Coder: I focus on understanding your business goals first, then architect a solution that delivers real value. My work at Xiaomi was praised for not just meeting, but exceeding expectations by foreseeing future needs. ✅ Proactive & Clear Communication: You will always be in the loop. I believe in transparent, frequent updates to ensure the project aligns perfectly with your vision. ✅ Partnership & Kindness: I see my clients as partners. I am committed to working collaboratively and kindly to make your project a success and your life easier. Ready to build a data infrastructure that drives your business forward? 𝗝𝗨𝗦𝗧 𝗖𝗟𝗜𝗖𝗞 𝗢𝗡 𝗜𝗡𝗩𝗜𝗧𝗘 𝗕𝗨𝗧𝗧𝗢𝗡 and let's have a quick chat about your project goals.