Rholdan O.

Rholdan O.

Senior Software Engineer

Colombia
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About Me

Rholdan is a skilled Java Developer with 14+ years of experience developing highly available and scalable web and standalone applications. He has good knowledge of systems engineering, design and analysis, and full-stack web development, always striving to increase productivity, marketability, and overall business value for his projects.

Work history

UpStack
UpStack
Senior Software Engineer
2022 - Present (2 years)
Remote
  • Create and develop innovative software solutions for different clients across a broad range of industries.

  • Participate in scrums consisting of cross-functional teams, both software and hardware.

  • Ensure that features are being delivered efficiently and on-time.

Avenue Code
Avenue Code
Senior Software Engineer
2021 - 2022 (1 year)
Remote
  • Developed Prepack API using Java, Spring core, Spring MVC and Spring Data - MongoDB. Analyzed requirements and designed, developed and implemented software applications for API consumers.

  • Collaborated in a team-based, Agile environment to accomplish objectives by deadlines. Analyzed flows, data usage, and work processes, and investigated problem areas for the previous system.

  • Reviewed code and debugged errors to improve performance. Designed and coded unit/integration testing for the API.

Globant
Globant
Senior Software Engineer
2016 - 2021 (5 years)
Colombia
  • Worked on developing microservices for an oil company client portal, using Java (Spring Boot), Node.js (VanillaJS, Typescript).

  • Implemented a backend inbound processing of data stream, using Apache Kafka and Redis. Performed monitoring through Prometheus and Grafana.

  • Led the ETL's backend process using Java (Spring MVC, Data, Batch & Boot), S3, Lambda, Intellij, JUnit, Mockito, Rest API, Athena, Snowflake.

Entelgy
Entelgy
Senior Analyst
2013 - 2016 (3 years)
Colombia
  • Managed the development of the Content Server tool by gathering the required information, database analysis, documentation, and creation processes.

  • Retrieved a large amount of client information from CS by creating web services using the CS API.

  • Identified and resolved any technical issues that arose.

Stefanini
Stefanini
Senior Java Developer
2012 - 2013 (1 year)
Colombia
  • Developed and maintained the CORE Fullfirmware’s applications to interconnect TIGO app with MovieCity app.

  • Resolved immediate and potential issues with applications.

  • Ensured that written code falls in line with project objectives.

 SOMOS IT
SOMOS IT
Senior Software Engineer
2011 - 2012 (1 year)
Colombia
  • Worked on creating fields in order to attach more than one experience credit file on CRM module, using PL/SQL, Toad, SQL Tools, Oracle.

  • Developed new functionalities on the CUR AvVillas app (Claim center), using Java, PL/SQL, Oracle, Eclipse, JasperReports.

  • Ensured that code is in compliance with specifications.

Superintendencia Financiera de Colombia
Superintendencia Financiera de Colombia
Senior Java Engineer
2010 - 2011 (1 year)
Colombia
  • Led the web development of SIRI modules such as Acquisition, Constitution, Running, and others.

  • Gathered the relevant information to build uses cases and develop them.

  • Debugged and resolved any technical issues.

Various Companies
Various Companies
Java Engineer
2006 - 2010 (4 years)
Colombia
  • Acted as a Senior Java Engineer at DB System to develop the “People”, “Management Procedure” & “Use Cases” modules.

  • Developed several functionalities on PEI (Institutional Education Plan), PMI (Institutional Improvement Plan) and PAM (Support Improvement Plan) modules for the MEN (Ministry of National Education).

  • Created several modules for Hospital Meissen, including Promotion and Prevention, Billing, Treasury Chambers of Surgery, Outpatient, and Clinical History.

Portfolio

ConnectedProduction - Sensia Global
ConnectedProduction - Sensia Global

Avalon is the new name for the open digitalization platform underpinning our latest portfolio of autonomous, automated, and connected solutions. Developed different APIs using Java, Spring core, Spring MVC, and Spring Data - Postgres/Cassandra. Analyzed requirements and designed, developed, and implemented software applications for API consumers. Managed authentication of API calls utilizing SSO with Keycloak and running OAuth-proxy sidecars. Developed stateless microservices in Java for event-driven architecture.

QuantCast Choice - Quantcast
QuantCast Choice - Quantcast

Quantcast Choice is a free and powerful consent management platform built for digital publishers to meet key privacy requirements from the ePrivacy Directive, GDPR, and CCPA. Developed different APIs using Java, Spring core, Spring MVC and Spring Data - DynamoDb/Lambdas/ApiGateway/Athena/S3 on AWS. Analyzed requirements and designed, developed, and implemented software applications for API consumers.

Prepack Service-GAP
Prepack Service-GAP

Worked on creating a Prepack API using Java, Spring core, Spring MVC, and Spring Data - MongoDB. Analyzed requirements and designed, developed, and implemented software applications for API consumers. Collaborated in a team-based, Agile environment to accomplish objectives according to deadlines. Analyzed flows, data usage, and work processes, and investigated problem areas for the previous system. Reviewed code and debugged errors to improve performance. Designed and coded unit/integration testing for the API.

Education

Bachelor’s Degree, Computer Science
Bachelor’s Degree, Computer Science
Universidad Autónoma del Caribe