Hire Top Freelance
Software Developers
in Portugal

I'm CTO, System Architect, Full-Stack developer with 10+ years of experience. I've experience of building billing systems for Internet Service Providers, Mobile Content Providers, Site Builder Systems (like a SitePlus.com, Wix.com), Learning Management System (cyber-education.az), small tools and etc. stuff. I can work alone or manage a team and work together to keep them enough mentored and motivated. Experience list (developing during work): 1. NodeJS - expert with 5+ years experience (my main serverside script interpreter that I use extensively in projects where high load and low latency is in first place), 2. PHP - expert with 10+ years experience (have rich experience with any popular framework of it, built billing systems and apps that will be supported by other developers where NodeJS devs are few), 3. Rust, C++, C#, Java, Python, Ruby - debugger and had deal with code written on these languages, writing own small projects on Rust as hobby before using it in customer's work. 4. Databases: MySQL (also Galera Cluster) - expert (installing, tuning, replication, complex queries, building optimal db solutions), PostgreSQL - expert (installing, tuning, replication, complex queries, building optimal db solutions), MongoDB - expert (currently preferred as primary db in most of projects, have rich experience on any aspect of this db), CouchBase - expert (using as secondary after MongoDB to cache, store data that is requested with high concurrency), CouchDB - expert (same as CouchBase, but I prefer CouchBase for it's active data in memory principles), RethinkDB - expert (I use it to build back communication between api micro-services and web-socket micro-services to route response to exact connection in context of multi-instance containers) 5. Frontend frameworks: AngularJS, ReactJS - have experience of supporting code written using these frameworks and experience can be developed if there is big need to work with them 6. Building micro-services and dockerizing it - I write micro-services "every day" because it's more compact, stable, flexible, scalable way of shrinking system to modular parts that will not conflict much than monolythic apps 7. Server OSs: ArchLinux, Debian, Alpine 8. Continuous Integration: CI Scripting in GitLab, Jenkins, CloudBuild 9. Team/Task management and boards in Jira 10. Cloud service providers: GCP, AWS For me nothing is impossible. Have problem - I'll find solution, only question is time. I would love the opportunity to work with you on your project!

SoftwareSoftware ArchitectureBack-EndOdinElixirMongoDBMySQLCouchbaseCouchDBWebSocketGo (Golang)FlutterGraphQLNestJSTypeScriptGoogle Cloud PlatformDocker swarmDockerKubernetesEntrepreneurshipDartPostgreSQLLinuxPHPSMPPNode.js

Problem solving enthusiast always focused on performance. Long time WordPress and PHP expert embracing the scientific way of thinking. Full stack knowledge from Linux systems administration to CSS3 Flexbox coding. Portuguese by heart, fluent in English and already visited Japan.

SoftwareReactPHPWordPressGitBootstrap

José C. Paiva is a Software Developer with 4+ years of experience in R&D. His main research interests are automated assessment of programming exercises, learning, gamification, and recommendation, in which he already published more than a dozen scientific research papers and book chapters. During these years, he has worked with tools such as Java, GWT, Javascript, Python, Redis, and HTML5/CSS3. He has also worked as a Full Stack Web Developer for 3+ years. These years provided him with experience in NodeJs, PHP, MySQL MongoDB, PostgreSQL, frontend frameworks (e.g., Vuejs and React), Wordpress, VBA, among many others. Furthermore, he has made several integrations with Zoho CRM and Zoho Creator while working in a Dutch company. During his academic years, he has demonstrated a strong ability and motivation to design and build systems that excel the initial requirements. His responsibility, quick learning, and commitment have made him a top Computer Science student. He has awarded a Computer Science degree from the Faculty of Sciences of the University of Porto as well as a Master degree in Computer Science - Specialization in Data Mining and Data Processing.

SoftwareSoftware DevelopmentData ScienceWeb Development