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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!
I’m a senior mobile + backend engineer with 20+ years in software (PHP since 2002; professional since 2005) and 10+ years building mobile apps. I help teams ship and stabilize real products—especially apps that are “almost done” but stuck on crashes, performance, flaky networking, or release blockers. What I can help you with (fast, practical): • iOS (Swift, SwiftUI, UIKit): crash fixes, performance/memory, concurrency issues, architecture cleanup • Flutter (iOS/Android/macOS): reliability, state consistency, networking/retry behavior, release readiness • Backend stability (PHP/Laravel or custom, Python/Django, Rails): idempotency, queues, DB performance, webhook safety • Firebase + mobile reliability: Auth/Firestore rules, Cloud Functions patterns, analytics/instrumentation • Monetization + shipping: RevenueCat/IAP reliability, App Store Connect/Play Console, CI/CD, rejection handling Recent work includes taking a messy iOS codebase (CakeClub) to production-ready with a Firebase Cloud Functions v2 backend, stronger security patterns, CI/release automation, and RevenueCat integration; and delivering major cross-platform Flutter work (BillBlaster) including design refinements, admin tooling, and push notification features. If you come with logs/screenshots (Crashlytics traces, network errors, repro steps), I’ll give you a clear diagnosis and a prioritized fix plan—and if it makes sense, I can execute the fixes as a focused sprint.
I am a software developer specialising in Ruby on Rails development. I have been working with this framework since version 2.0. Also I have been teaching Ruby on Rails courses at several universities.
Thrived in start-up environments and teams that do battle daily for product and customer success. I have successfully designed and built systems in various landscapes, industries, and infrastructures.
Administration of Linux servers focused on automation, using famous technologies in the market, such as Chef, Ansible, ELK, Jenkins, Docker, Python, Golang and etc. Proven experience in a critical environment with DR, multi-center cluster orchestration and easy scheduling. Good practices like 12factor, mindset like Devops and squad work. My resume is on LinkedIn: https://www.linkedin.com/in/wvoliveira/ \*Resume in portuguese :(
Over ten years of software engineering experience across full stack, back end, operations, DevOps, and SRE.
High load web projects, bespoke software development, project management experience DevOps: Ansible,Vagrant, Chef PAAS & Cloud: (AWS, Amazon beanstalk, Redhat openshift, OpenStack, Digital Ocean) Continuous integration (with Jenkins / Bamboo) Client stack (javascript core, AngularJS, HTML5 apis, jquery) Pure JS stack (Javascript, AngularJS, Node.JS, mongo) NoSQL (mongodb) LAMP stack (PHP, MySQL, Linux) Windows stack (asp.net MVC, MSSQL 2000-2008) -> DevOps & Development inquiries: http://www.softasap.com/ -> Github http://bit.ly/mygithubprofile -> Ansible roles (MIT, BSD-3 clause) on a galaxy: http://bit.ly/ansible_roles -> Get in touch: check for available 30 minutes slot http://bit.ly/calendarappointment
With 12 years of work experience as a Software Engineer, most of them at Airbnb, and now a startup Founder *(visit https://aicards.io)* I would love to share my professional knowledge to help people. I am also happy to provide AI expertise and help make some AI profile cards to showcase your portfolio and increase your **professional visibility**. On the technical side I can help with full-stack applications at micro & macro level as well as any entrepreneurship questions. If interested you are also welcome to join my newly created **"TechByte" community** for knowledge sharing *(visit https://techbyte.cards)* where you can also scroll to the bottom and AI chat with me to see my full professional profile. If you are looking for long term relationships, grow your career and projects together I would be happy to help. Feel free to reach out at any time!
Passionate about learning, adapting and using new tools, in order to solve the problems of oneself and the others. Focused on web.
I'm an experienced systems engineer focusing on highly available systems design, operation and troubleshooting. I love opensource software and have a desire for deep knowledge of all technology I work with.
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