Marceli Wac
Software Engineer at University Hospitals Bristol and Weston NHS Foundation Trust
United Kingdom
Summary
👤
Senior🎓
Top SchoolMarceli Wac is a software engineer based in the UK with nine years of hands-on experience building cloud-native, full-stack systems for healthcare, research, and ecommerce. He combines academic rigor (PhD in Digital Health and Care) with practical product delivery, having led projects from NHS dashboards used in critical care to a commercial tenancy-management platform and a research-grade ESM study platform with cross-platform mobile apps. Marceli is strong on backend architecture and DevOps—migrating systems to AWS, implementing serverless and microservice patterns, and establishing CI/CD pipelines—while also shipping polished React and Flutter front-ends. He contributes to notable open-source work on the Moleculer TypeScript microservices framework, improving type safety and developer experience. Known for moving quickly from interviews and requirements to production, he often owns end-to-end delivery single-handedly on high-impact projects.
9 years of coding experience
7 years of employment as a software developer
Bachelor’s Degree, Computer Software Engineering, Bachelor’s Degree, Computer Software Engineering at Swansea UniversityDoctor of Philosophy - PhD, Digital Health and Care, Doctor of Philosophy - PhD, Digital Health and Care at University of Bristol
Polish, English
Stackoverflow
377reputation
13kreached
12answers
6questions
Github Skills (20)
microservice-framework10
typescript10
microservices-application10
moleculer10
typescript-types10
nodejs10
typescripts10
microservices10
distributed-systems9
test-automation9
javascript8
serverless-offline6
knexjs6
objectionjs6
airplay6
Programming languages (14)
Github contributions (5)
moleculerjs/moleculer
Feb 2024 - Mar 2025
:rocket: Progressive microservices framework for Node.js
Role in this project:
Back-end Developer
Back-end DeveloperContributions:1 review, 2 PRs, 10 comments in 1 year 1 month
Contributions summary:Marceli primarily contributed to the TypeScript-based microservices framework, Moleculer. Their work focused on enhancing the type safety and developer experience by adding types for service lifecycle handlers and hooks within the `ServiceSchema`. The user updated and expanded the TypeScript tests to validate the new type definitions and features. This involved modifications to service definitions and testing logic to ensure proper usage and functionality.
moleculersoanode-jsframeworkmicroservice-framework
marceliwac/web-softwaretools-react
Mar 2021 - Oct 2022
React website created for the software tools module at University of Bristol.
Contributions:1 PR, 1 push in 1 year 6 months
reactbristolsoftware-toolsreactjsreact-website
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