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Seasoned Web Developer and Blockchain enthusiast with a proven track record in the IT and services industry. Expertise in Research, PHP, HTML, JavaScript, and Blockchain development, including Smart Contracts. Skilled in automation, application testing, and cybersecurity analysis for web and mobile apps.
I have a great passion for solving problems and can help people with various programming languages, databases, information systems, software related projects.
Senior data engineer specializing in financial data infrastructure, large-scale pipeline architecture, and cloud data systems on AWS/GCP/Snowflake. I build and fix data pipelines that handle real stakes — regulatory reporting, trading infrastructure, high-volume financial data — and I have a track record of measurable improvements: full data loads from 3 weeks to 6 hours, ingest times from 45 minutes to 3, query runtimes improved 500%. Recent work: 🏦 Lead data engineer at MSRB (US federal regulator, $4T municipal bond market): 30 ETL pipelines supporting $9B+ in daily trades, pricing data availability increased 800% across 2.7M securities 📦 Data infrastructure at Trafigura: serverless pipelines processing ~500GB of multi-domain financial, industrial, and geopolitical data 📑 Greenfield SEC filing pipeline: 20 years of filings across 4,000+ companies, structured for LLM querying ⚙️ DataPraxis: container-based ingestion platform (GCE/Docker/Kubernetes) reducing ingest time from 45 minutes to 3 🌍 Catalist: Productionizing machine learning models at 1,000,000x scale and implemented Cloudera colocation -> BigQuery transtion MS Applied Mathematics & Statistics, Johns Hopkins University.
Mobile app architect with 19 years of industry experience and 14+ years building iOS \Android applications: from greenfield architecture to rescuing legacy codebases. I've led teams of 15+ developers, shipped apps for high-profile clients, and specialize in turning complex requirements into maintainable, well-tested Swift, Kotlin, Java, C\C++ and Objective-C code. My technical foundation runs deep: memory management, multi-threading, comprehensive Unit and UI testing, and full project lifecycle ownership from conception to App Store deployment. I've also worked extensively with C/C++ and C# on Windows platforms, and apply Python and JavaScript where they fit the job. As a team leader since 2013, I've grown teams, built personalized developer growth plans, and helped multiple engineers advance to senior and tech lead roles. I bring the same rigor to people as I do to code. I'm known for modernizing development workflows, driving cross-team collaboration, and delivering under pressure without sacrificing quality.
I love building high-impact products that push me to think creatively and solve complex problems. I have designed and developed **large-scale, highly available systems** from scratch, delivering **high-throughput, fault-tolerant applications** that serve millions of users. My expertise spans **Java**, **NoSQL**, **Serverless Computing**, and **distributed systems**, with a strong focus on scalability and reliability. I’m equally passionate about **mentoring**, having guided 100+ students and professionals in **DSA, system design**, and interview preparation.
Hi! I love Java, Python, Javascript, distributed systems, large scale systems, machine learning, natural language processing and image processing. My work has been featured on the AWS blog (https://tinyurl.com/chaosrunner), The Guardian (https://tinyurl.com/topvocab) , Billboard.com (https://tinyurl.com/topprofane) and other print/digital publications. I also own Amazon's chaos testing framework called AWSSSMChaosRunner (https://github.com/amzn/awsssmchaosrunner). I am a Senior Engineer at Amazon's Prime Video and have worked on scaling backend systems to millions of transactions-per-second, utilising various cloud technologies and primarily working with Java, Kotlin and Javascript. This involves image/audio/text processing systems, creating & managing databases/APIs for mobile/web applications and everything in between. I have 15yrs+ experience with backend engineering, cloud tech, nlp, signal processing and image processing. I can help you with any of these topics. I also love hackdays and have attended 20 hackdays in Europe in the last couple of years and collaborated with beginners/experienced developers on different kinds of projects. Thanks for reading and hope to talk to you soon!
12 years of experience in software development. I am a Senior Frontend Engineer with extensive experience in React, JavaScript, and TypeScript, working on building scalable and user-friendly web applications. I’ve spent the past years working with technologies like React, Vue.js, and React Native, which have helped me develop a strong understanding of frontend architecture and optimizing performance for large datasets. I am passionate about collaborating with cross-functional teams and have led initiatives to improve UI/UX in previous roles. My background includes not only frontend work but also backend and ensuring seamless user interactions with complex systems. Development Specialities & Experience: -iOS •Languages: Swift and Objective-C •Hybrid application platforms: React Native, Xamarin •Libraries and Frameworks: CoreAnimation, CoreData, CoreLocation, CoreImage, Audio Framework, Cocoapods, Mapkit -Android •Languages: Java and Kotlin •API: Location, Map API, Search API, Media API, Widget API, Web API •Data Storage: Sqlite, File Storage -Google Map Service, SLC, OpenStreetMap SDK, Yandex Map SDK; -Social networks API: Facebook, Twitter, LinkedIn, Instagram, Google+, Tumblr, Foursquare, Flickr, Weibo, Wechat; -Flurry, TestFlight, Analytics, Admob, Push Notification, In-App Purchase Websites Development: -React -Symfony -Javascript -Jquery -Bootstrap -Woocomerce -Lavel framework
I have over 8+ years of full-stack experience building scalable and reliable systems using **[ASP.NET](http://asp.net/) Core**, **React with TypeScript**, and **AWS**. In my current role as a Lead Software Engineer at Cimpress, I’ve designed and built multiple microservices from scratch in **.NET Core**, and more recently upgraded services to follow **.NET 8 standards**, improved middleware pipelines, and performance optimizations. On the frontend, I’ve worked extensively with **React + TypeScript**, building components, architecting state management, and creating production-ready UI applications deployed globally. I collaborated closely with designers and product teams while ensuring a strong typing system using TypeScript to reduce runtime issues and improve maintainability. On the cloud side, I’ve deployed and maintained services on **AWS** using **Elastic Beanstalk, EC2, S3, CloudFront, RDS, Lambda, Route53, and CloudWatch**. I’ve implemented CI/CD pipelines, improved monitoring and alerting, and introduced proactive tracking using dashboards and structured logging via **CloudWatch, Kibana, and Serilog**. **Code quality and scalability** have consistently been central to my work: * I enforce clean architecture principles, separation of concerns, SOLID, and domain-driven thinking where appropriate. * I conduct and lead code reviews with a strong focus on readability, simplicity, and maintainability. * I use **unit testing, integration testing, mocking frameworks, and automation** to ensure reliability before code reaches production. * I migrated a major enterprise product from Telerik ORM to **EF Core**, which boosted performance by 40% and reduced long-term maintenance cost. * I evaluated multiple load-testing tools and standardized **k6** for performance and stress testing of mission-critical microservices. * I’ve designed services with async patterns, caching, and proper DB indexing to support high load and low latency requirements. * I work closely with product and stakeholders to identify potential risks early and design scalable, fault-tolerant solutions. I’m comfortable taking ownership end-to-end—design, build, test, deploy, monitor—and I enjoy collaborating with frontend-heavy engineers as well. At the same time, I can work independently, communicate clearly, and ship improvements quickly in a remote environment. Overall, my experience aligns well with this role’s need for strong backend engineering in **ASP.NET 8**, paired with solid React/TypeScript experience, AWS cloud expertise, and a strong focus on correctness for high-stakes applications
I love to solve problems
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