Jacek Różański

Built a document-management SaaS from scratch with Symfony, Doctrine, MariaDB and DDD. Led React 18→19 and CRA→Vite modernization; implemented JWT, six-role RBAC, APIs, migration and CI/CD.

Built multi-tenant Symfony APIs with JWT, CQRS, OpenAPI, async workers and Mercure live updates. Developed five-database integration, legacy sync and migration tools; led PHP 8.4 / Symfony 7.4 upgrade.

Reviewed enterprise architecture and scalability; advised on feature flags, CI/CD, Docker, release management and workflows.

Sole backend owner of 11 Symfony/PHP microservices with CQRS, Messenger, DDD and SNS/SQS event integrations. Operated AWS ECS/Fargate, Aurora, Cognito, S3, Lambda, Redis and CloudFront; maintained ~216 Terraform resources.

Delivered backend/frontend features, REST/SOAP integrations, BankID, payments and batch image/PDF processing. Over two years of commercial Angular development, database optimization and infrastructure support.

Full lifecycle development of EU-grants, bulk-mail and CMS systems.

Designed a production Symfony MCP server with 14 read-only tools exposing listing and broker data to AI assistants. Implemented OAuth 2.1/PKCE, consent, scoping, output allowlists, privacy masking and injection mitigation; 60+ E2E JSON-RPC tests.

Postgraduate studies in Software Engineering at AGH University of Science and Technology, Kraków, from 2008 to 2009.

Master's degree in Economic Computer Science from the University of Economics in Katowice, completed in 2008.