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I am a senior full-stack & DevOps developer with a track record of maintaining distributed infrastructure, recent deep experience in large-scale data pipelines and a growing skillset and interest in applied AI/LLM integration. My recent work at an e-commerce search engine startup had me building and maintaining scrapers and a data pipeline that ingested over 10M product SKUs into an OpenSearch index, which was used for hybrid vector+lexical product search, enriched with LLM signals extracted as part of the pipeline. I've used reranking techniques like RRF to enhance relevance after retrieval, and RAG/grounding for features that answered personalized user queries with recommendations grounded in real customer reviews. My earlier work was heavily full-stack and always involved infrastructure where I often built and supported systems end-to-end, very often in context of a regulated market - with great examples like Deckard (PropTech/GovTech), Sick Children's Hospital/RareConnect (Healthcare-adjacent), and Ethoca \[now MasterCard\] (FinTech). I've also led IaC initiatives at Ethoca (Chef/Ansible, in 2016-17), and even implemented IaC from scratch for two startups - Pastel Labs (Terraform automation of AWS infrastructure for a B2B SaaS and a tutoring marketplace, in 2021), and Rilara (Pulumi for AWS infrastructure of their e-commerce product, in 2025-26). My startup experience is proven track record of working independently, but I also thrive as part of a team, with most recent example of being part of Deckard's distributed remote engineering team of 25+ people spread across the US and Australian timezones. Claude Code is part of my everyday workflow, and I am happy to consider myself a relatively-older senior developer who has successfully adapted to an AI-assisted/AI-first SDLC without compromising the quality of my work. I would be very excited to continue my journey with an opportunity in healthcare or finance, where I could apply my IaC skills while continuing to explore the world of LLM applications to improve user experience in these regulated environments. Should you have any questions about any of the background I mentioned here or on the attached resume, I would be glad to answer them in an interview at a time of your convenience. Thank you!
Senior Java Developer with over 17 years of experience building scalable enterprise applications, with strong focus on backend systems, REST APIs, and distributed architecture. Hands-on expertise in Java (up to 21), Sprng , Spring Boot, React ,Angular , TypeScript ,Oracle DB,PostgreSQL, and microservices. Proven track record in insurance and finance tech domains. Comfortable working in agile environments, and highly skilled in transforming business requirements into technical solutions.
I am an ex Amazon now working on a elite hedge fund; graduated with a Master of Computer Science. I have professional experience in **multiple programming languages** and have designed multitude of application from ground up. I have a lot of experience in designing **scalable distributed systems**. I enjoy providing **thorough code reviews**. I am very keen to find design and coding bugs. I have done lot of technical interviews and has hands on experience in the recruitment process. I have a good track record **training people for technical interviews**.
Full-stack software craftsman and technical leader with over 15 years of experience. Equally adept at system design, programming, technical leadership, mentorship, and business collaboration. Have a wide breadth of technical experience, but specialize in backend API development, relational databases, and web applications. Passionate about simplicity and efficiency. I have worked at over a dozen companies large and small, in a handful of different domains. Also participated in hundreds of interviews, about half-and-half as the interviewer and the interviewee. I have given dozens of talks and training sessions on a variety of topics, mostly focusing on distributed systems, caching, and testing. My top skills are Java, SQL, testing, and refactoring. I have experience with formal academic and professional mentorship, and would love to help you skill up, solve a problem, or just nerd out with you today!
#### Empowering Developers: From Novice to Expert Are you looking to embark on your software development journey or elevate your existing skills? With expertise in Python, Java, TypeScript/JavaScript, Rust, Dart/Flutter, Haskell and Clojure. I offer comprehensive guidance tailored to your needs. My approach combines technical proficiency with essential soft skills, ensuring you're well-equipped for the industry's challenges. #### Beyond Learning: Practical Implementation For those seeking hands-on assistance, I'm available for projects of various scales. Whether it's implementing new features, debugging complex issues, or optimizing database performance with Postgres and MongoDB, I bring a wealth of experience to the table. My commitment to clean code, SOLID principles, and multi-layered architecture ensures robust, maintainable solutions. #### Navigating the AI Landscape In the rapidly evolving field of artificial intelligence, I offer insights into the workings of Large Language Models (LLMs) and their applications. From crafting effective prompts to exploring the potential of open-source models, I can guide you through the intricacies of AI integration in your projects. Let's unlock the power of AI together and push the boundaries of what's possible in software development. #### Cutting-Edge Methodologies My unique approach to software development incorporates algebraic design principles and property-based testing. By employing a multi-tiered model that seamlessly integrates declarative functional programming, object-oriented design, and imperative coding, I create systems that are both elegant and efficient. This methodology allows for clear, abstract specifications that translate into practical, high-performance code. *Technologies / Skills* - Clean Architecture - Python - Java - TypeScript/JavaScript - Rust - Dart/Flutter - Haskell - Clojure - PostGreSQL - MongoDB - SOLID principles - TDD / BDD / ATDD - LLMs - ChatGPT, Claude, Llama
https://aaronhanson.dev I fell in love with coding at age 13 and haven't looked back since. I've learned lots of languages along the way, but I'd have to say my favorites are Solidity and JavaScript. I'm a huge proponent of science/tech education, free speech and digital privacy rights.
Seasoned Java software engineer with over a decade of expertise in designing, developing, and optimizing high-performance systems. Proficient in leading technical teams and mentoring emerging talent, I have consistently delivered quality software solutions that exceed business expectations. Recognized as an active thought leader, I have spoken at international industry conferences and contributed to esteemed platforms like InfoQ and [Foojay.IO](http://foojay.io/). Armed with a comprehensive skill set that combines technical mastery, proven leadership capabilities, and extensive industry knowledge * Senior Java developers with 11+ years of experience. * Experienced back-end developer (developed a backend system for a financial application that serves 10+ million users). * Expertise in developing mobile applications * Expert in Java ( including Java 11-21, lambda expression, and stream API, Concurrency) * **Published four books** on Java ( 3 of them best-sellers) * Java User group leaders * Contributed AdoptOpenJDK project **Editorial Contributions** • Contributing Editor for the Java Queue and Architecture Queue at [InfoQ.com](http://infoq.com/). • Editorial Contributor at [Foojay.io](http://foojay.io/). **Community Leadership and Engagement** • Founder and Organizer for the Java User Group of Bangladesh (JUGBD), community meetups and conferences since 2013. • Recently joined the Jakarta EE Ambassadors Program. • JCP Associate Member: Active member of the Java Community Process. **Technical Contributions and Workshops** • Eclipse Committer for the Jakarta Starter project. • Presented talks on Java and software engineering topics. More details at [bazlur.ca/conference-talks](http://bazlur.ca/conference-talks). Twitter: [https://twitter.com/bazlur\_rahman](https://twitter.com/bazlur_rahman) LInkedIn: [https://www.linkedin.com/in/bazlur/](https://www.linkedin.com/in/bazlur/) Key Skills: Programming Language: Java (JSE, JEE), Java 8, Java 11 to Java 21, Scala, Python, Groovy, C, JavaScript Frameworks: Spring Boot, Spring Framework, Grails, Hibernate, JPA, JMS, Android Database: Oracle Database, DynamoDB, Microsoft SQL Server, MySQL, PostgreSQL Development Tools: IntelliJ Idea, Eclipse, Maven, Gradle, GIT, TeamCity(CI/CD), NeverCode CI, Middleware: Apache Tomcat, JBoss EAP, Oracle WebLogic Server, AWS (CloudFront, CloudWatch, Beanstalk, S3, SNS/SQS, Lambda, Ec2, Kinesis, Redis, Redis PubSub), jPOS Operating Systems: Mac OS X, Linux Ubuntu, Linux CentOS Others: Microservices, RESTful API design, and integration, Clean Code, Clean Architecture, OOP, SOLID, TDD, Design Patterns, Agile methodologies
I've been blessed with many wonderful opportunities throughout my career, which have helped me grow not only as a professional, but as a person. My greatest pleasure comes from witnessing the transformation of a mentoree in both confidence and knowledge! When I'm done with work for the day I transition to my own open source projects: ranging from - zero-dependency DI framework in Kotlin - persistent/immutable data structure library in Kotlin I'm learning K8s by running a raspberry pi cluster in a basement server rack for home automation. Enough about me, let's get to work on improving your current situation!
Summary: Computer Science Bachelors Degree from New York University, 2004 17 years of hands-on software engineering experience in corporate Manhattan offices. 9 years of Java programming in addition to 8 years of managing technology teams. Projects include: HBO GO (API Team, 7 years), Macmillan LaunchPad, Citigroup Private Bank, Schoology. Hands-on coding: Senior Engineer for API Design and Implementation in Java. Expert in Oracle and MySQL database design and implementation. Technology skill set: - reverse engineering old web sites - root cause analysis of hard-to-solve bugs - master in integration solutions like adding a video player or making 2+ systems talk to each other - adding shopping carts to old web sites - adding new technologies to old web sites - upgrading the look & feel of old web sites without throwing the whole thing away - adding a paywall to web sites - creating blogs - managing software engineering teams that are stuck - getting projects out the door when momentum is lacking Testing: Professional experience in continuous integration solutions for unit testing and automation: Jenkins, Bamboo, TeamCity. Management: Implementer of best practices across software engineering teams including training on: business requirements documentation, technical specifications (Confluence), test case writing, test bank management, QA testing, software task management and bug tracking (JIRA), code review (GitHub), Git branch strategies (i.e. Gitflow), Git branching and forking.
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