Available to hire
I’m a backend and DevOps engineer with 20+ years of experience building cloud-native, secure systems across Fintech, SaaS, and Gaming. I design scalable APIs, CI/CD workflows, and containerized microservices using Python, GoLang, Laravel, Docker, and AWS. I am also comfortable with frontend work (React, Vue, Angular) and I place a strong emphasis on authentication, performance tuning, and production observability.
I thrive in collaborative environments, translating business requirements into robust architectures, writing maintainable code, and mentoring teammates. I enjoy building blueprints for multi-tenant platforms, ensuring regulatory compliance, and delivering high-availability systems in fast-paced settings.
Experience Level
Work Experience
Senior Backend & DevOps Engineer at AltBank Technologies GmbH
January 1, 2019 - PresentDesigned and developed a multi-tenant SaaS banking platform using Laravel and FastAPI, supporting modular APIs for account management, KYC, and transaction services. Created isolated service boundaries using Docker containers with ECS orchestration and ALB path routing on AWS. Built PostgreSQL-backed microservices with tenant-level data separation and row-level security. Integrated Keycloak for authentication and authorization with dynamic realm creation per client, token refresh, OIDC, and RBAC. Developed React dashboards for internal banking operations and implemented CI/CD pipelines using GitHub Actions for test automation, schema migrations, and blue-green deploys. Used Redis Streams for asynchronous workflows and maintained S3-based storage for regulatory documents. Defined IAM policies to ensure least privilege, created tooling for backfills and data sync, participated in security reviews, and built a custom Laravel permission system. Managed observability with Prometheus, Loki,
Senior Full Stack Developer at CareSync Solutions
December 31, 2018 - July 21, 2025Developed core modules for a collaborative healthcare platform enabling coordinated care. Implemented RESTful APIs in Symfony with secure token-based access and encrypted PHI data models. Created Vue.js components for clinical workflows and used AWS ECS for containerized backend deployments with fine-grained IAM roles. Integrated Redis queues for real-time updates and managed MySQL schema evolution with versioned migrations. Designed serverless workflows with AWS Lambda for reporting and data syncs. Configured S3 for compliant medical document storage. Developed patient-facing portals with role-based views and data masking. Implemented two-factor authentication and device-aware login detection. Refactored legacy code, built scheduling engine, integrated third-party APIs, set up CloudWatch alerts, and enhanced test coverage with unit and E2E tests. Led onboarding and provided technical support for hospital IT teams.
Senior Full Stack Developer at Arcadia Interactive
March 31, 2014 - July 21, 2025Developed core backend services with Laravel and Flask for account management, matchmaking, user inventory, and rewards across multiple online games. Implemented JWT-based authentication APIs for cross-platform login. Built real-time React interfaces for player profiles and match statistics. Created AngularJS tools for game masters and designed MongoDB schemas for gameplay data. Deployed backend services to Azure App Services using slot-based deployments. Developed Flask microservices for loot drops, match results, and economy balancing. Authored job queues and cron jobs for quests and events. Built admin dashboards for live game configuration and analytics collectors for player behavior. Integrated Discord for event announcements and social sharing features. Supported in-game purchases with secure workflows and created test tools for QA load simulations. Designed scalable WebSocket layers for chat and live feeds. Contributed to clan/guild system and refactored legacy UI to React + Red
Senior Backend & DevOps Engineer at AltBank Technologies GmbH
January 1, 2019 - PresentDesigned and developed a multi-tenant SaaS banking platform using Laravel and FastAPI with modular APIs for account management, KYC, and transactions. Created isolated Docker containers orchestrated with AWS ECS and ALB routing. Built PostgreSQL-backed microservices with tenant-level data separation and row-level security. Integrated Keycloak for advanced authentication and authorization with dynamic realm creation per client. Developed React dashboards for internal operations. Implemented CI/CD pipelines via GitHub Actions, blue-green deploys, and rollback safety. Managed asynchronous workflows using Redis Streams and maintained S3 storage for regulatory documents with lifecycle policies. Defined strict IAM policies for least privilege access. Created tooling for data backfills and syncs, participated in security reviews including audit trail setups. Developed a custom permission system linked to Keycloak roles. Optimized PostgreSQL queries and onboarding automation, delivered high-th
Senior Full Stack Developer at CareSync Solutions
December 31, 2018 - July 31, 2025Developed core modules for a collaborative healthcare platform using Symfony and Vue.js enabling coordinated care among providers. Implemented secure RESTful APIs with token-based access and encrypted PHI data. Utilized AWS ECS, Lambda, and S3 with fine-grained IAM roles for backend services and compliant medical document storage. Built real-time Redis queues for lab updates and reminders. Managed MySQL schema evolution with Doctrine migrations. Designed serverless workflows for reporting and EHR data syncs. Created patient portals with role-based data masking and implemented two-factor authentication. Refactored legacy code, developed scheduling engines, UI builders, and integrated third-party APIs. Configured CloudWatch alerts and built dashboards for care team metrics. Wrote extensive tests increasing coverage, supported audit logging for HIPAA compliance, and led onboarding sessions. Delivered multi-region failover infrastructure, automated compliance exports, and led integration w
Senior Full Stack Developer at Arcadia Interactive
March 31, 2014 - July 31, 2025Developed backend services with Laravel and Flask for games supporting account management, matchmaking, and in-game rewards. Implemented JWT authentication enabling cross-platform login. Built React and AngularJS interfaces and tools for players and game masters. Designed MongoDB schemas for event-driven gameplay data. Deployed services on Azure with slot-based deployment. Created Flask microservices for loot, match results, and economy logic. Managed job queues and cron jobs for daily quests and events. Built admin dashboards for live game configuration. Developed analytics collectors for player behavior and latency. Integrated Discord and social sharing features for viral growth. Supported in-game purchase workflows with refund-safe states. Created QA testing tools, scalable WebSocket layers, and helped refactor legacy UI widgets. Led migration to React+Redux and worked on feature flags, referral systems, and documentation. Conducted load testing and collaborated with community manag
Senior Backend & DevOps Engineer at AltBank Technologies GmbH
January 1, 2019 - PresentLed the design and development of a multi-tenant SaaS banking platform using FastAPI and Laravel, supporting modular APIs for account management, KYC, and transactions, with strict tenant-level data security. Created Docker containerized services orchestrated by AWS ECS with path-based routing and implemented Keycloak-powered authentication and authorization. Developed internal React dashboards for banking operations, CI/CD pipelines with GitHub Actions, asynchronous workflow management with Redis Streams, and compliance export tools. Managed AWS infrastructure provisioned with Terraform and automated tenant onboarding with Ansible. Ensured observability using Prometheus, Grafana, and Loki, improved performance with optimized queries and lazy-loading, and led incident response and security audits. Mentored junior engineers and conducted internal knowledge sharing sessions.
Senior Full Stack Developer at CareSync Solutions
December 31, 2018 - August 20, 2025Developed internal admin and patient-facing healthcare SaaS applications using Django and Symfony, creating secure RESTful APIs for PHI access and clinical workflows. Built Vue.js components for care logs and medication tracking, and managed containerized deployment on AWS ECS with fine-grained IAM roles. Automated reporting and EHR data sync with AWS Lambda. Enforced compliance through audit logging, two-factor authentication, and device-aware security. Maintained MySQL databases with Doctrine migrations and developed multi-region failover infrastructure. Led integration with EHR vendors, enhanced monitoring with CloudWatch, improved test coverage using PHPUnit and Cypress, and supported onboarding and mentoring of hospital IT teams.
Senior Full Stack Developer at Arcadia Interactive
March 31, 2014 - August 20, 2025Built core backend services for online gaming platforms using Laravel and Flask including account management, matchmaking, and in-game rewards with JWT authentication and session management. Created real-time React and AngularJS interfaces for player profiles, game monitoring, and administrative tools. Designed MongoDB schemas for gameplay telemetry and deployed services on Azure with slot-based deployments. Developed Flask microservices for game economy and events, implemented job queues for quests and leaderboards, and integrated social sharing and Discord. Led clan system architecture, migration to React+Redux UI, game telemetry dashboards, test load simulations, and production feature flags. Provided API documentation, conducted load tests, and collaborated closely with community managers and game developers.
Senior Software Developer at DXC Technology
November 1, 2022 - PresentDesigned and developed a multi-tenant SaaS banking platform using FastAPI and Laravel, with modular APIs for accounts, KYC, and transactions. Created isolated service boundaries via Docker and ECS, with ALB-based path routing. Implemented strict tenant-level data separation and row-level security in PostgreSQL for regulatory auditing. Integrated Keycloak for authentication and RBAC with dynamic realm creation, token refresh, and OIDC. Built React dashboards for onboarding and health summaries; established CI/CD with GitHub Actions and blue-green deploys; used Redis Streams for asynchronous workflows and S3 for regulatory documents.
Software Programmer at Montrose Software
October 1, 2022 - September 29, 2025Developed internal admin tools with Django for patient records, staff roles, and compliance workflows; built RESTful APIs for mobile health apps; implemented serverless reporting and EHR data syncs with AWS Lambda; created Vue.js components for care workflows; deployed containerized services on AWS ECS; integrated Redis queues for real-time updates; ensured HIPAA-compliant data handling and cross-region failover with VPC peering and DNS routing.
Senior Software Developer at Infolet Sp. Z o.o.
August 1, 2021 - September 29, 2025Developed backend services using Laravel and Flask for account management, matchmaking, user inventory, and in-game rewards; implemented JWT-based authentication and secure data models; built real-time React interfaces and AngularJS GM tools; designed MongoDB schemas for gameplay data; deployed on Azure App Services with Blob storage and slot-based deployments; supported AWS Lambda-based periodic reporting and data syncs; established auditing and compliance practices.
Senior Software Developer at Sabre Airline Solutions
August 1, 2021 - September 29, 2025Developed backend services for account management, matchmaking, user inventory, and in-game rewards across online games; implemented JWT authentication and cross-platform session management; built real-time React interfaces for profiles and statistics; created AngularJS tools for live monitoring; designed MongoDB schemas for event-driven gameplay data; deployed on Azure App Services with Blob storage and serverless components; authored queues and cron jobs for daily quests and leaderboard resets; configured monitoring with Azure Monitor.
Senior Software Developer at Luxoft
May 1, 2018 - September 29, 2025Developed core backend services for account management, matchmaking, user inventory, and in-game rewards; implemented JWT authentication; created admin dashboards, feature flags, and remote config toggles; integrated Discord for event announcements; supported in-game economy balancing and data-driven tuning; documented APIs and conducted load tests; deployed Terraform-managed Azure infrastructure.
Software Developer at Software MacKiev
March 1, 2015 - September 29, 2025Contributed to backend services for accounts, matchmaking, and rewards; implemented JWT authentication and cross-platform login; built React UI components for profiles and stats; deployed on Azure App Services; supported Flask microservices for loot drops, match results, and economy logic; helped maintain CI/CD pipelines and created analytics dashboards.
Senior Software Developer at DXC Technology
November 1, 2022 - PresentDesigned and developed a multi-tenant SaaS banking platform using FastAPI and Laravel, with modular APIs for account management, KYC, and transaction services. Created isolated service boundaries with Docker containers orchestrated by ECS and ALB path routing on AWS. Implemented tenant-level data separation in PostgreSQL, integrated Keycloak for authentication and authorization, built React dashboards for internal banking operations, and defined CI/CD pipelines with GitHub Actions for testing, migrations checks, and blue-green deployments. Built Redis Streams for asynchronous workflows and managed regulatory document storage on S3 with auto-expiry; tuned IAM, VPCs, and private networking; enabled zero-downtime deploys and robust rollback. Led security reviews and implemented audit trails; developed a Laravel-based custom permission system mapped to Keycloak roles; optimized PostgreSQL indexing and analytics queries; automated tenant onboarding, and delivered APIs handling 500+ concurre
Software Programmer at Montrose Software
October 1, 2022 - September 29, 2025Developed internal admin tooling with Django for patient records and compliance workflows; created RESTful APIs to support mobile health apps; built serverless data-sync and reporting workflows using AWS Lambda; containerized services with AWS ECS and fine-grained IAM roles; implemented Redis queues for real-time updates and managed MySQL schema migrations with Doctrine; deployed client-facing portals with RBAC and HIPAA-aligned data masking; introduced 2FA for sensitive healthcare access and data privacy improvements; built a scheduling engine and a dynamic UI builder.
Senior Software Developer at Infolet Sp. Z o.o.
August 1, 2021 - September 29, 2025Developed core backend services with Laravel and Flask for account management, matchmaking, and in-game rewards; implemented JWT-based authentication and secure data models; built real-time dashboards with React and conducted data visualization; deployed on AWS using ECS, Lambda, and S3; managed PostgreSQL, MongoDB, and Redis for scalable game state and telemetry; designed multi-region architectures, Terraform-based infra, and Ansible configuration for secure deployments; implemented logging and compliance exports.
Senior Software Developer at Sabre Airline Solutions
August 1, 2021 - September 29, 2025Developed backend services for enterprise solutions including account management, telemetry integration, and data workflows; JWT authentication and session management; built real-time React interfaces for profiles and metrics; deployed on Azure App Services with Blob Storage; authored job queues and cron jobs for daily operations; designed multi-region failover networking and secure access controls; implemented auditing and compliance-oriented logging.
Senior Software Developer at Luxoft
May 1, 2018 - September 29, 2025Developed backend services for account management, matchmaking, user inventory, and in-game rewards; JWT-based authentication and session management; containerized deployments on Azure App Services with IAM per service; Redis queues for real-time events; MySQL schema migrations with Doctrine; serverless workflows with AWS Lambda for periodic reporting and data sync; monitoring with Azure Monitor and automated alerting.
Software Developer at Software MacKiev
March 1, 2015 - September 29, 2025Contributed to backend services for account management, matchmaking, and in-game rewards; implemented JWT authentication; built React UI components for profiles and statistics; deployed on Azure App Services with Blob Storage for assets; Flask microservices for loot drops and economy logic; CI/CD pipelines and feature flags for production readiness; supported admin dashboards and event-driven tooling.
Senior Software Developer at DXC Technology
November 1, 2022 - PresentDesigned and developed a multi-tenant SaaS banking platform using FastAPI and Laravel, supporting modular APIs for account management, KYC, and transaction services. Created isolated service boundaries using Docker containers with ECS-based orchestration and ALB path routing on AWS. Built PostgreSQL-backed microservices with strict tenant-level data separation and row-level security for financial auditing. Integrated Keycloak for authentication and authorization, configuring dynamic realm creation per client with token refresh, OIDC, and RBAC. Developed React dashboards for internal banking operations including transaction tracking, user onboarding, and account health summaries. Implemented CI/CD pipelines using GitHub Actions for test automation, schema migration checks, and blue-green deploys with rollback safety. Used Redis Streams to manage asynchronous workflows such as ledger closing, email notifications, and scheduled fund transfers. Managed S3-based storage for regulatory docum
Software Programmer at Montrose Software
October 31, 2022 - September 29, 2025Developed internal admin tools using Django for managing patient records, staff roles, and compliance workflows, streamlining healthcare operations for clinical teams. Created RESTful APIs in Django to support mobile health apps, enabling secure access to treatment plans, visit logs, and medication history for patients and caregivers. Developed core modules for a collaborative healthcare platform, enabling coordinated care across physicians, nurses, and case managers. Implemented RESTful APIs in Symfony with secure token-based access and encrypted data models for PHI. Created Vue.js components for daily care logs, medication tracking, treatment plan creation, and clinical notes. Used AWS ECS for containerized deployments of backend services with fine-grained IAM roles per service. Integrated Redis queues to support real-time lab result updates, appointment reminders, and patient form submissions. Managed MySQL schema evolution using Doctrine migrations, versioning every change to meet
Senior Software Developer at Infolet Sp. Z o.o.
August 31, 2021 - September 29, 2025Developed core backend services using Laravel and Flask for account management, matchmaking, user inventory, and in-game rewards across multiple online games. Implemented JWT-based authentication and session management APIs, enabling cross-platform login from mobile, desktop, and web clients. Built real-time React interfaces for player profiles, achievement tracking, and match statistics, integrating directly with telemetry data. Created AngularJS tools for game masters (GMs) to monitor live player sessions, moderate chats, and enforce disciplinary actions. Designed MongoDB schemas to store nested, event-driven gameplay data including matches, events, kills, damage dealt, and chat logs. Deployed backend services to Azure App Services, using slot-based deployment strategies and Blob Storage for versioned static asset delivery. Developed Flask microservices to handle loot drops, match result submissions, and in-game economy balancing logic. Authored job queues and cron jobs to manage dai
Senior Software Developer at Sabre Airline Solutions
August 31, 2021 - September 29, 2025Developed core backend services using Laravel and Flask for account management, matchmaking, user inventory, and in-game rewards across multiple online games. Implemented JWT-based authentication and session management APIs, enabling cross-platform login from mobile, desktop, and web clients. Built real-time React interfaces for player profiles, achievement tracking, and match statistics, integrating directly with telemetry data. Created AngularJS tools for game masters (GMs) to monitor live player sessions, moderate chats, and enforce disciplinary actions. Designed MongoDB schemas to store nested, event-driven gameplay data including matches, events, kills, damage dealt, and chat logs. Deployed backend services to Azure App Services, using slot-based deployment strategies and Blob Storage for versioned static asset delivery. Developed Flask microservices to handle loot drops, match result submissions, and in-game economy balancing logic. Authored job queues and cron jobs to manage dai
Senior Software Developer at Luxoft
May 31, 2018 - September 29, 2025Developed core backend services using Laravel and Flask for account management, matchmaking, user inventory, and in-game rewards across multiple online games. Implemented JWT-based authentication and session management APIs, enabling cross-platform login from mobile, desktop, and web clients. Created admin dashboards to configure live game parameters, push news updates, and toggle seasonal events without code changes. Enabled Discord integration for automated event announcements, top player updates, and friend invites. Integrated social sharing features for post-match content and video thumbnails to drive growth. Supported in-game purchase workflows with receipt verification, cooldown timers, and soft-lock safeguards. Developed feature flags and remote config toggles to enable/disable features in production. Helped launch a player referral system with invite tracking, multi-step rewards, and abuse prevention logic. Documented APIs and tooling with Markdown, Swagger, and internal dev po
Software Developer at Software MacKiev
March 31, 2015 - September 29, 2025Assisted in developing backend services with Laravel and Flask for account management, matchmaking, and in-game rewards. Implemented JWT authentication and session handling for mobile, desktop, and web logins. Built React UI components for player profiles, achievements, and match statistics, working with telemetry data. Supported AngularJS tools for game masters to monitor live sessions and moderate chats. Wrote MongoDB queries and schemas for storing gameplay events such as matches, kills, and chat logs. Helped deploy services on Azure App Services, learning about slot deployments and static asset delivery. Contributed to Flask microservices for loot drops, match results, and game economy logic. Assisted in writing cron jobs for daily quests, leaderboards, and timed events. Helped maintain admin dashboards and seasonal event management. Collected basic analytics data like heatmaps and latency reports and supported Discord integration for event announcements. Participated in load testi
Education
Bachelor’s Degree at Kraków University of Economics
January 1, 2007 - December 31, 2011Bachelor’s Degree at Kraków University of Economics
January 1, 2007 - December 31, 2011Bachelor’s Degree Computer Science at Kraków University of Economics
January 1, 2007 - January 1, 2011Master Degree at National Technical University of Ukraine 'Kyiv Polytechnic Institute'
January 1, 2002 - January 1, 2006Master's Degree in Computer Engineering at National Technical University of Ukraine 'Kyiv Polytechnic Institute'
January 1, 2002 - January 1, 2006Master Degree in Computer Engineering at National Technical University of Ukraine 'Kyiv Polytechnic Institute'
January 1, 2002 - January 1, 2006Qualifications
Industry Experience
Financial Services, Software & Internet, Healthcare, Gaming, Media & Entertainment, Professional Services
Experience Level
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