Samuel Rizzo

Senior Full Stack Java Developer

Kann in folgende Städte reisen: Berlin, Berlin, Hamburg

  • 52.517
  • 13.3889
  • Unverbindlicher Tarif 680€ / Tag
  • Berufserfahrung 7 Jahre und +
  • Antwortrate 100%
  • Antwortzeit Ein paar Tage
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Standort und Mobilität

Berlin, Germany
ist bereit beim Kunden vor Ort zu arbeiten
  • Berlin und im Umkreis von 50km
  • Berlin
  • Hamburg




Github : srizzo srizzo
  • 11 Follower
  • 28 Repositories
  • 3 Gists

Stack Overflow

Stack Overflow : Samuel Rizzo Samuel Rizzo
  • 1821 Reputation
  • 17 Bronze
  • 14 Silber
  • 2 Gold


  • Englisch


  • Portugiesisch

    Fließend/ Muttersprache

Fähigkeiten (13)

Samuel in wenigen Worten

I'm a freelancer specialized in Java, React, Ruby on Rails, and AWS. I have over 13 years of combined experience as a Full-stack Developer, Software Architect, and Tech Lead, accumulated across well-established companies as well as early-stage startups.

Projekt- und Berufserfahrung


Senior Full-stack Ruby on Rails Developer

Februar 2020 - März 2020

Development of a quick yet fully functional prototype to help validate an idea and choice of technologies.


Digitalagenturen & IT-Consulting

Freelancer | Senior Full Stack Developer

Berlin, Deutschland

Mai 2017 - Heute

As a contractor/consultant, I support startups and big corporations with:

  • Full Stack Development with Java / Ruby on Rails / React / Vue.js
  • Architecture and design of technical solutions
  • Prioritization and delivery of critical projects/features on tight deadlines
  • Migration/refactoring of legacy code
  • Automation of DevOps and CI/CD
  • Adoption of cloud infrastructure and services (AWS/Google Cloud).


Soziale Netzwerke

Senior Software Engineer, Ruby on Rails

Hamburg, Deutschland

September 2015 - Mai 2017

In the SEO team, designed and implemented a replacement solution for our Members Directory's engine that provided a remarkably simpler yet more solid and maintainable foundation, and served as a blueprint for the development of new directories. Advocated a Continuous Delivery culture, introduced and implemented integration tests (Capybara) and helped to implement a CI/CD pipeline (Jenkins).

In the Premium & Upsell Services team, helped maintain the platform that enables Xing to sell subscriptions to users and provides some of the Premium features, serving more than 12 million members, hundreds of requests per second. Helped with the migration of features from our legacy Perl monolith codebase to our Ruby on Rails microservices platform (REST and AMQP APIs). Mentored and onboarded multiple working students, new employees, and freelancers.

Tech Stack: Ruby on Rails, RSpec, Capybara, REST APIs, AMQP APIs, MySQL, Jenkins

Glass, Lewis & Co.

Beratung & Audit

Software Engineer, Ruby on Rails

Limerick, Irland

August 2014 - Juli 2015

In the team.

Designed and implemented a solution that enabled continuous ingestion and analysis of millions of records of financial data from FactSet, introducing big data and ETL tools (Hadoop, Hive and Sqoop), and building an AWS EMR pipeline.

Rewrote our company/investor search and matching engines (Elasticsearch) with remarkable improvements in performance and maintainability.

Tech Stack: Ruby on Rails 3 / 4, DataMapper, Elasticsearch, AngularJS, Resque, RSpec, Capybara, Hadoop, Hive, Amazon EMR

Capgemini - Capgemini Organisation


Senior Software Architect, Java EE

Rio de Janeiro, Brasilien

Oktober 2012 - Juni 2014

Worked at ANP, Brazilians’s National Agency of Petroleum, Natural Gas
and Biofuels, in the architecture team. We were responsible for the definition and enforcement of architectural standards and guidelines to be followed by internal and external development teams, and for coaching and supporting our internal teams. Tech Stack: Jenkins, Sonar, Java EE 6, CDI, Weld, JBoss Seam 3, JSF 2.1, PrimeFaces 4, JPA 2, EJB 3.1, JUnit, JBoss EAP 6.1, Oracle, SOAP and RESTful Web Services (JAX-WS and JAX-RS, JAXB), Maven

Spassu Tecnologia e Servicos


Tech Lead, Senior Software Architect, Java EE

Rio de Janeiro, Brasilien

August 2011 - April 2012

Worked at Spassu’s Software Development Center. I was responsible for the architecture and design of our projects, and for providing technical leadership and coaching to 3 small development teams. Tech Stack: JBoss Seam 2, JBoss Seam Application Framework, RichFaces 3, JBoss AS 5, MS Sql Server, Oracle



Senior Software Architect, Java EE

Rio de Janeiro, Brasilien

Dezember 2010 - August 2011

Worked at Ancine, Brazilian’s National Agency for Cinema. I was responsible for the definition and enforcement of architectural standards and guidelines, and for quality assessment of code received from external development agencies. Tech Stack: Java EE, Jenkins, JBoss Seam 2, RichFaces, JPA 1, Oracle, JBoss AS 5

1 Auftrag auf Malt

    (1 Meinung)

    Susanne - Adressmeisterei


    Sehr gute Zusammenarbeit, Samuel hat sehr zuverlässig und termintreu gearbeitet und sehr viel Know-how, gerne wieder


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