Sharélison Caldera
Verified Expert in Engineering
JavaScript Developer
Willemstad, Curaçao, Curaçao
Toptal member since November 21, 2025
With over 8 years of experience working as a software engineer mainly in the Netherlands, I have acquired a lot of knowledge and experience. I've worked for several big companies like Rabobank and ABN Amro. I'm more specialized in back-end development, but I'm also proficient in front-end development. I also have a bachelor's degree in computer science, which gave me a very good foundation and understanding of software engineering.
Portfolio
Experience
- Java - 8 years
- Spring Boot - 8 years
- JavaScript - 8 years
- Docker - 7 years
- Jenkins - 5 years
- Kubernetes - 5 years
- Angular - 4 years
- Azure Cloud Services - 3 years
Preferred Environment
Java, Spring Boot, Kubernetes, Azure Cloud Services
The most amazing...
...application I’ve built is a real-time banking information service at the center of the bank’s internet banking, processing more than 5 million daily requests.
Work Experience
Senior Software Engineer
Shartech
- Developed an application that's responsible for handling SWIFT messages for outgoing and incoming payments. The application supports SWIFT FIN and SMX and uses the H-TCP protocol (and REST) to send and retrieve messages.
- Created the first Jenkins CI/CD pipeline for the company to be able to build and release applications automatically.
- Deployed and tested the applications for multiple bank environments.
Senior Software Engineer
ABN AMRO Bank
- Developed multiple BFFs (back end for front end) for the mobile banking app.
- Helped develop and test the 3DS application of ABN for Mastercard payments.
- Used Azure DevOps to create and improve different pipelines.
Senior Software Engineer
Rijkswaterstaat
- Built several applications/microservices to analyse, process, and store traffic data as a member of the Big Data/Analytics team.
- Developed an API that aggregates historical traffic data of vehicles driving on the roads of the Netherlands.
- Managed and maintained the Kubernetes cluster and monitoring of all applications.
- Created and improved Azure DevOps pipelines for the deployment of applications as well as infrastructure.
Engineer Container Management Platform
Council for the Judiciary
- Helped maintain and install the OpenShift platform (on-prem) that is used organization-wide.
- Developed a full-stack application with Java (back end) and Angular (front-end) to give the team insight into the usage and costs of each development team within the organization.
- Helped out developers and teams within the organization to onboard to the OpenShift platform.
Software Engineer
Rabobank
- Developed and maintained back-end account information services that were at the center of internet banking and handled more than 5 million requests a day.
- Developed the new PSD2 APIs for the bank that made it possible for third parties to gain access to consented customer information.
- Created and maintained CI/CD pipelines with Jenkins as well as Azure DevOps.
Experience
Developed PSD2 APIs for Bank
Payment Processing Application
Education
Bachelor's Degree in Computer Science
Rotterdam University of Applied Sciences - Rotterdam, the Netherlands
Certifications
Oracle Certified Professional
Oracle
Oracle Certified Associate
Oracle
Skills
Libraries/APIs
AMQP, Stripe
Tools
Jenkins, Git, Azure App Service, Elastic, JDK 8, Docker Compose
Languages
Java, JavaScript, C#, Python, PCF, Kotlin, SQL, Python 3, Python 2
Frameworks
Spring Boot, Spring Security, Spring 4, AngularJS, Angular, Apache Camel, Camel, JSON Web Tokens (JWT)
Paradigms
Automation, Agile, Azure DevOps, Scrum
Platforms
Kubernetes, Docker, Linux, Azure, OpenShift, Red Hat OpenShift
Storage
Azure Cloud Services, Databases, Redis
Other
Back-end, Programming, APIs, Full-stack Development, Data Collection, Proxies, Cloud Infrastructure, Monitoring, Quarkus, Front-end, Proxy Servers, Data Scraping, Web Crawlers
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