Viktor – .NET, Angular, CI/CD

A platform for improving math skills in children through retro games that use math problems to achieve progress in the game.

• Migrated a legacy PHP application to a .NET 8 + Angular stack (API plus three Angular apps), running a dev-to-production release flow with pre-release testing;
• Built the AWS environment from scratch: ECS services, ECR, S3 buckets, and CloudFront, replacing the prior setup;
• Set up CI/CD with Bitbucket Pipelines (build Docker image → push to ECR → deploy to ECS; static assets to S3 + CloudFront), authenticating from Bitbucket to AWS via OIDC roles with no static keys;
• Implemented encrypted nightly database backups to S3 (AES-256, automated rotation) with strict public-access blocking;
• Hardened the platform for a state data-privacy agreement (NIST 800-171): device/IP-aware login lockout, soft-delete with admin restore, SIEM alerting (Wazuh + fail2ban), and a 72-hour breach-notification policy;
• Scheduled recurring background jobs (Hangfire) for statistics and cleanup during low-traffic hours.

A cloud-native multi-tenant platform for a global provider of investment management solutions, serving as a centralized configuration manager to configure, update, and manage applications across isolated, configurable environments. The project focused on building and maintaining scalable Azure infrastructure supporting multi-instance tenant deployments, automated provisioning, and unified API delivery across regions.

• Developed .NET API endpoints implementing complex cloning logic with multi-installation handling, transactional integrity, and audit record management;
• Built Angular components and data-driven views for the investment platform UI — fund configuration screens, portfolio tables, and multi-step onboarding workflows connected to .NET APIs managing sensitive financial records;
• Implemented Angular reactive forms for tenant and account configuration screens, coordinating validation rules with backend financial calculation logic;
• Triaged and resolved edge-case defects in financial data flows by tracing discrepancies through .NET service layers, SQL calculations, and API response chains — identifying root causes independently across layered backend logic;
• Rewrote Azure DevOps CI/CD pipelines (YAML), including build, release, and teardown pipelines with approval gates and dry-run validation.
• Redesigned Kubernetes deployment workflows using ArgoCD, Helm Charts, and Terraform, enabling declarative multi-instance rollouts across environments;
• Accelerated delivery using AI-assisted development tools (Claude, GitHub Copilot) for pipeline authoring, Terraform module generation, and code review.

This project aims to create scalable and expansive virtual events through the World Indigenous Forum platform, showcasing the potential for growth and adaptability in the digital event space.

• Crafted an engaging, interactive web application with Blazor and ASP.NET Core;
• Maintained the MS SQL Server database and ensured fluid operations through Entity Framework;
• Overhauled application authorization, implementing more granular role-based access to resources;
• Containerized application workloads and deployed them to AWS ECS, with images published to ECR;
• Built and maintained CI/CD pipelines for build, release, and environment-approval gates;
• Provisioned AWS infrastructure (ECS, ECR, S3, CloudFront) with Terraform for reproducible environments;
• Served static assets via S3 + CloudFront and configured routing for the application;
• Conducted unit testing of critical logic and integrated tests into the deployment pipeline.

A prominent provider of compliance solutions for the Energy, Oil & Gas sectors, it specializes in managing Operator Qualification, Safety, and Insurance Tracking programs. Advanced software ensures regulatory compliance, supported by value-added services and targeted training for optimal workforce performance and operational efficiency. With a focus on safety and excellence, this provider is a trusted partner in navigating industry complexities.

• Implemented producer/consumer services over Apache Kafka, including Kafka connectors and Debezium change-data-capture, for reliable event-driven data flow across the compliance platform;
• Built OData API endpoints exposing operator-qualification, safety, and insurance-tracking data with flexible, queryable access for downstream consumers;
• Integrated Amazon S3 for document and data storage, handling upload, retrieval, and lifecycle of compliance records;
• Designed and maintained background services for asynchronous processing of tracking and compliance workflows;
• Provisioned and operated containerized workloads on AWS via Rancher, with CI/CD pipelines in Jenkins and BitBucket for build and release;
• Configured monitoring and error tracking with Datadog to improve reliability of data pipelines and services;
• Covered critical business logic with unit tests (MSTest), and contributed to Agile planning and estimation.

A platform that offers custom payment solutions to meet unique business needs. It is designed with an approach reminiscent of industry giants like Stripe. The platform not only handles transactions but also allows merchants to manage batched payments and maintain product listings, streamlining operations for enhanced efficiency.

• Built Angular components and services for the merchant portal — account management screens, fee schedule editors, and transaction history views — integrated with .NET APIs handling sensitive payment and processing data;
• Implemented Angular reactive forms for multi-step merchant onboarding and payment configuration workflows, with conditional validation rules tied to processing tier, merchant type, and payment method;
• Diagnosed async data discrepancies in the Angular frontend by tracing mismatches between displayed payment totals and backend SQL financial aggregations across service calls and component state — resolving issues independently across unfamiliar code paths;
• Implemented a framework for controlled batch process execution, establishing common libraries and building domain-specific processes for settlement and reconciliation flows;
• Implemented integrations with Azure Blob Storage, SFTP, and Application Insights to support batch data exchange and execution observability;
• Built business logic for the reporting module, enabling merchants to gain cost, time, and profitability insights from payment transaction data.

Solution provides specialized software tailored for the oil and gas sector. It helps track daily production rates, find and investigate production losses, calculate multiple indicators, allocate production issues, visualize vast amounts of data, and provide unique insights to oil engineers.

• Designed and built API with architectural solutions to support large data amount and keep the codebase scalable using ASP.NET Core;
• Set up infrastructure on top of Azure and Kubernetes with many application instances to handle incoming traffic;
• Covered crucial business logic with unit tests to enhance system reliability and robustness;
• Streamlined the deployment process and running of the tests with Azure Pipelines.