Castillians

Cloud Engineer

• Design, deploy, and manage AWS infrastructure using Infrastructure as Code (IaC) tools such as Terraform or AWS CloudFormation.
• Build and maintain robust CI/CD pipelines using Jenkins, GitLab CI, GitHub Actions, or AWS CodeSuite to streamline application delivery.
• Manage containerized applications using Amazon EKS (Kubernetes) or ECS (Fargate/EC2) in production environments.
• Implement comprehensive monitoring, logging, and alerting strategies using CloudWatch, Prometheus, Grafana, or the ELK Stack to ensure system reliability and performance.
• Enforce cloud security best practices including IAM least privilege, VPC security groups, encryption (KMS), and assist in compliance audits (SOC2, ISO).
• Optimize AWS services (EC2, RDS, Lambda, S3) for high availability, scalability, and cost efficiency through right-sizing and purchasing strategies.

Senior AWS Cloud Engineer

Network Engineer

• Design, implement, and maintain Cisco-based network infrastructure.
• Configure and support Cisco routers, switches, wireless solutions, and security devices.
• Monitor network performance and ensure high availability of services.
• Troubleshoot network connectivity, routing, switching, wireless, and security issues.
• Manage VLANs, VPNs, QoS, STP, OSPF, EIGRP, BGP, and network segmentation.
• Support Cisco Meraki, Catalyst, Nexus, and other Cisco technologies as applicable.
• Conduct health checks and performance assessments of network environments.
• Implement network security best practices and compliance requirements.
• Collaborate with client stakeholders and third-party vendors.
• Prepare technical documentation, network diagrams, and operational procedures.
• Provide recommendations for network improvements and modernization.
• Support migration, deployment, and infrastructure upgrade projects.

Backend Engineer

• Providing technical guidance and expertise to the team.
• Supporting architectural and technology-related decision-making throughout the project lifecycle.
• Mentoring team members on a regular basis to promote professional growth and knowledge sharing.
• Fostering a culture of empowerment, innovation, and effective problem-solving within the team.
• Participating actively in code reviews to ensure high standards of code quality and maintainability.
• Taking part in Agile ceremonies and contributing to continuous team improvement.
• Identifying, assessing, and helping resolve technical risks, issues, and project impediments.
• Delivering constructive technical feedback and conducting reviews to support team success.
• Resolving technology-related challenges that may hinder development progress.

Senior Software Engineer – .NET, React, Azure

Data Scientist

• Design, develop, and deploy machine learning and data science solutions using Python.
• Build and maintain reusable Python libraries and analytical frameworks.
• Develop machine learning models, data visualization solutions, and analytical dashboards.
• Build and deploy APIs and cloud-based applications.
• Implement and maintain CI/CD pipelines for machine learning workflows.
• Deploy, monitor, and optimize machine learning models on Microsoft Azure.
• Collaborate with business stakeholders to translate business requirements into technical solutions.
• Maintain technical documentation and follow software engineering best practices.
• Stay up to date with emerging technologies and industry trends relevant to the role.

DevOps Engineer

• Design, deploy, and manage enterprise-grade Azure environments (Landing Zones).
• Architect and maintain Azure Kubernetes Service (AKS) or Azure Container Apps.
• Leverage deep working knowledge of Azure PaaS technologies (App Services, SQL Database, Storage Accounts, Service Bus).
• Implement advanced Azure networking (VNet, Private Link, Hybrid Connectivity, ExpressRoute, Firewall).
• Build and maintain large-scale platforms using a code-first approach.
• Develop Infrastructure as Code using Terraform and Azure Bicep (or Pulumi).
• Utilize Azure CLI and Azure PowerShell alongside Bash and PowerShell scripting for automation.
• Design and implement robust CI/CD pipelines using Azure DevOps and/or GitHub.
• Develop automation pipelines for both infrastructure deployments and application delivery.
• Manage branching strategies (GitFlow/GitHub Flow) and artifact repositories.
• Implement monitoring and observability using Azure Monitor, Application Insights, and Log Analytics.
• Define SLIs, SLOs, and lead incident response and Root Cause Analysis (RCA) for customer environments.
• Implement Azure Security Center / Defender for Cloud.
• Manage identity and access management (Azure AD, RBAC, Managed Identities).

Senior DevOps Engineer

Software Engineer

• Configure and manage Citrix NetScaler Gateway for secure remote access, SSL offloading, and traffic management.
• Implement Global Server Load Balancing (GSLB) and high availability (HA) solutions across multiple data centers.
• Deploy and maintain Secure Private Access hybrid environments, ensuring integration with Citrix Workspace and StoreFront.
• Configure SSL/TLS certificates for NetScaler Gateway, ensuring compliance with enterprise FQDN and certificate policies.
• Implement Application Firewall (AppFW) and traffic policies to protect against web application threats.
• Manage authentication profiles and integrate with OIDC/SAML IdPs for secure identity management.
• Monitor ADC performance, troubleshoot latency issues, and optimize traffic flows.
• Maintain system requirements: NetScaler versions 13.1/14.1 or later, Windows Server 2019+, SQL Server 2019/2022 for logging and monitoring.
• Ensure communication ports and callback URLs are correctly configured for Secure Private Access.
• Work closely with network, security, and application teams to align ADC solutions with business needs.
• Document configurations, policies, and provide training to operations staff.

Senior Citrix Netscaler Engineer

Data Engineer

• Improve code base and data model of the data estate
• Assist with maintenance tasks and daily data operations
• Monitor data loading process for Datawarehouse ETL/ELT
• Migrate Central Backend to Central repository
• Collaborate on migration of architecture to Microsoft Fabric
• Involve in web scripting data analytics project
• Enhance data pipeline and auditing processes
• Support production issues across pipelines
• Conduct ad hoc data analysis for business stakeholders

Android Engineer

• Designing and developing mobile applications for Play Store and AppStore
• Ensuring optimal performance and user experience
• Writing clean and testable code
• Collaborating with colleagues to innovate app functionality
• Managing and troubleshooting client-reported issues
• Staying updated with best practices in mobile app coding

Senior Mobile Engineer – Native iOS, Android

Frontend Engineer

• Enhance client’s business websites
• Fix bugs and refactor chat widget
• Handle reports upgrades for B2B and B2C websites
• Improve Customer 360 application
• Migrate application to Angular
• Implement Two-Factor Authentication

Senior Front End Engineer, Angular

AI Engineer

• Develop documentation processes and guidelines for AI policy
• Work on AI initiatives involving chatbots and document control
• Design and maintain AI chatbot functionalities
• Collaborate with stakeholders for requirement finalization
• Automate internal operational pipelines

Engineer

• Designing, maintaining, and upgrading ISP access/core/distribution/transit infrastructure
• Supporting enterprise networks for corporate clients
• Managing migrations from Cisco to Harmonic systems
• Resolving issues during client migrations
• Working with internal teams and vendors to ensure proper configuration
• Monitoring migration progress and maintaining timelines.

DocSis Engineer

• Continuing conversations with one of their clients to gather additional information to finalize the network diagram and start configuring and finalizing the nodes.
• Performing final fine-tuning on the completed CEE upgrade while executing required night activities as part of ongoing project work.
• Providing ongoing operational support by actively handling and resolving tickets, including CDR-related, IoT, and ChirpStack issues.
• Planning and coordinating the BSP upgrade with the vendor.
• Collaborating with cross-functional teams, vendors, and clients to coordinate project activities, exchange technical information, and support smooth execution of operational and upgrade tasks.
• Researching, recommending, and implementing technical solutions to improve mobile network performance and reliability.
• Supporting the UAT and troubleshooting of issues found and taking timely corrective action.
• Introducing new equipment while maintaining equipment under responsibility.
• Generating reports and analyzing data on the assigned projects.
• Monitoring and analyzing technical reports.
• Preparing technical procedures to execute the task, while also collaborating closely with the vendors and customers for the information required.

Mobile Network Engineer

• Support migration of applications from legacy to .NET
• Develop and implement new features for sports betting system
• Troubleshoot and fix development issues
• Collaborate on regional expansion and market addition

Senior Frontend Developer

• Create a tailored portal for clients
• Block traffic from specific regions
• Implement and manage security measures
• Conduct security assessments and audits
• Train team on security best practices

QA Engineer

• Perform manual and automated testing for server and client migration
• Design, develop, and maintain automated testing scripts and frameworks
• Identify and prioritize test cases for automation
• Collaborate with teams to review test cases and align activities