Andrzej is a Senior Full-stack Developer with 10+ years of software development experience curating innovative software solutions for clients. He is proficient in React, Node.js, TypeScript, and JavaScript and writes clean and efficient code on projects. Andrzej provides top-notch customer service on client projects and solutions.
Developed an innovative social platform for sharing and discovering news and media using React, Redux, Redux Saga, Reselect, AWS (S3, CloudFront), Immutable.js, and Styled Components.
Achieved the reduction of technical debt, performance optimizations (reduction of unnecessary React rerenderings), refactorings improving code quality, and UX improvements.
Ensuring that features are being delivered efficiently and on time.
Spearheaded the development and architecture of a content creators management platform.
Designed and deployed background scraping jobs to AWS K8s cluster, conducted external API reverse engineering, and implemented performance optimizations.
Designing and building creative, usable, and compelling user interfaces on web solutions using industry best practices and integrating data from third-party APIs and back-end services on client projects.
Developing new customer-facing experiences and features on web solutions and defining the architecture for delivering improvements to different solutions with high availability, performance, and scalability.
Providing technical guidance for code reviews, troubleshooting production support issues post release, and resolving complex production issues on projects.
Solution Architect (BSCS onsite project at T-mobile Polska)
2012 - 2015 (3 years)
Warsaw, Poland
Delivered architecture artifacts that promoted re-usability, modularity, and scalability on the BSCS project.
Developed robust recommendations, proposals, and scope-of-work documents for the project and identified critical dependencies and gaps within the solution.
Planned and documented the strategy, design, and implementation of different engineering solutions on the project.
Produced and delivered customer-specific demonstrations, technical presentations, pilots, and POCs on client projects.
Developed software updates with other engineers in the company.
Engineered product features that delivered high value to customers, maintained project status reports, and participated in project status meetings with business stakeholders.
Provided frontend expertise for the Guide Human website; overseeing the implementation of new features and bug fixes using React and other supporting libraries and tools in line with industry best practices. Managed integration with the backend, handled data flow optimization tasks, performance profiling and improvement and the establishment of internal standards and ways of work - evangelizing Git branching model and workflow, deployment pipeline configurations, file structures and coding style.
Legacy's obituary-writing tool, ObitWriter, is an invaluable resource that allows users to write a complete basic obituary. It walks users through a series of questions about the deceased to generate the obituary. Developed and maintained the obituary generator web app; overseeing frontend form performance optimizations for the reduction of unnecessary React re-renderings. Worked on various refactorings to improve code quality and restructured the GraphQL queries for the solution.
Worked on an educational measurement and evaluation system through the development of a zero-downtime student evaluation platform based on QTI standards with the capacity to handle over 500 hits/s using very minimal hardware setup. Engineered the solution to be linearly scalable.
The Media Markt platform is a virtual educational space for teachers and educators. The platform has teaching materials and ready-made lesson plans, developed by professionals in the field of education. Worked on the search and registration app for the educational workshop events site held by the Polish branch of Europe's largest retailer of consumer electronics.
Actively participated in and worked on the integration and production launch of BSCS (telco billing system) and EOC (Ericsson's order management system); deployed as one BSS solution for Trans Link Systems (a public transport integrator in the Netherlands).