
Marius Marin
Verified Expert in Engineering
Angular Developer
Bucharest, Romania
Toptal member since March 3, 2022
Marius is a full-stack developer with 8+ years of experience specializing in .NET and Angular. He has a proven track record within the banking and financial industries, corporate applications, and highly dynamic configurable applications systems, such as a content management system written from scratch. Marius is also comfortable working with cross-platform web and mobile development, embracing new technologies, and following the industry’s best practices.
Portfolio
Experience
- JavaScript - 8 years
- SQL - 8 years
- Angular - 6 years
- .NET - 4 years
- Azure DevOps - 3 years
- PrimeNG - 3 years
- Team Leadership - 2 years
- Microservices Architecture - 2 years
Availability
Preferred Environment
Visual Studio, Visual Studio Code (VS Code), Microsoft
The most amazing...
...thing I've achieved is architecting, planning, coordinating, and implementing a legacy application migration to a new and modern technology stack.
Work Experience
Senior FE Developer
Crowdstrike
- Developed an application similar to ChatGPT that integrates multiple LLMS (Claude, Lama, etc).
- Worked closely with the UX and back-end teams to develop multiple functionalities for the LLM chat.
- Contributed to the application from its early stages and helped it become adopted by the company, reaching 2,000 users within a couple of months.
Senior Angular and .NET Engineer
Odido Netherlands
- Increased user satisfaction by over 100% by implementing new features and services management and improving the existing user experience.
- Increased company revenue by €150,000 within three months of launching a new service product (Home Save Online and Thuis Safe Online) with over 10,000 new user subscriptions.
- Ensured stakeholders' satisfaction of over 100% by implementing the complete rebranding from T-Mobile to Odido. Implemented the project discreetly on an entirely new infrastructure and provided a timely launch.
- Ensured application and business security by decommissioning the old servers and keeping the technology stack up to date.
Cross-platform Mobile Developer (AngularJS)
MTS Systems - Main
- Owned the development, deployment, and automatic update process for a legacy application with poor documentation, built by different teams for Windows, Android, and iOS.
- Tracked and fixed bugs using Trello as a reporting tool.
- Improved the development process by organizing code repositories and branches, setting up documentation, and training internal personnel to be independent once the engagement ends.
- Set up a migration plan to drastically improve deployment speed (up to 24 times, from around six hours to 15 minutes) and enhance the performance and security of the application by removing deprecated and unsupported technologies.
Senior Angular and .NET Engineer | Team Lead
Sustainalytics
- Ensured user satisfaction of over 100% and increased loading speed more than 33 times by implementing a clear and efficient roadmap for migrating from the existing hybrid technology stack to a clean and modern one.
- Saved more than €200,000 per year for the client by increasing the development speed of similar functionalities more than three times and implementing an Angular dynamic library.
- Elaborated a transparent and efficient roadmap for migrating from the existing hybrid technology stack (ASP.NET MVC, jQuery, Angular 1, and Angular 8) to a clean and modern technology stack (.NET Core and Angular 12).
Senior Angular and Node.js Engineer
Freelance
- Increased the daily in-game currency production by more than 800% and eliminated the user effort by designing and building a cross-platform desktop application trading bot that takes decisions and operates autonomously.
- Implemented an auction bot that automatically bids on items sold below market price.
- Built a bot that automatically buys items with instant buy prices lower than the market price.
Senior Angular and .NET Engineer
Starbyte
- Ensured customer satisfaction by over 100% and doubled client's portfolio by enabling fast development of financial processes and designing dynamic, secure, reliable, and highly configurable components for their content management system.
- Improved the company's customer satisfaction by 100% by delivering dynamic and reliable components that ensured fast development and increased the number of client projects that could be implemented simultaneously by 200%.
- Increased the client's portfolio by 200%, meeting the customer needs up to 20 times faster. Also, the need for software developers was no longer required, which improved their profitability by 20%.
- Ensured 100% automation for the end client (client of a financial institution) in obtaining a loan or insurance. Customers could access financial institution services up to 200 times faster.
Senior Angular and .NET Engineer
Honeywell
- Eliminated annual losses amounting to over $1 million by making redundant a subscription-based application and designing and implementing a microservices-based architecture application from scratch, aligning internal processes.
- Tracked and implemented features using Jira as a reporting tool.
- Helped junior Angular developers get up to speed.
Senior SharePoint Developer
Honeywell
- Increased client productivity by 20% by designing and implementing an application that fully automates the Kaizen process.
- Ensured user satisfaction of over 100% by designing and implementing a cross-platform mobile application (IOS and Android) with offline capabilities that take advantage of the camera and microphone.
- Automated SharePoint deployments with PowerShell.
Experience
Mosaic
• elaborating a clear and efficient roadmap for migrating from the existing mixed technology stack (.NET MVC, jQuery, Angular 1, and Angular 8) to a clean and modern technology stack (.NET Core and Angular 12);
• identifying common functionalities throughout the application, writing a dynamic Angular library, and publishing it internally as an npm package on Azure artifacts. The library ended up being used in other two projects within the company;
• coordinating, mentoring, and providing code reviews for a small team of developers to keep a consistent, clean and efficient code style;
• eliminating all high and medium risk security issues by implementing best practices; and
• maintaining Azure DevOps pipelines (build and release pipelines) according to project changes.
Krunity
• create a new site.
• create a data model using a web interface that translates into a new relational database.
• configure pages with data-rich controls (grid, forms, reports, OCR, and face recognition).
• configure multi-step workflows.
I was a full-stack developer and contributed to important core functionalities for the CMS, including:
• data model operations—created SQL tables and fields, generic CRUD operations, and generic flexible filter logic.
• controls data source—configured multiple sources for controls, such as internal objects (model created inside the application), external API, CMS dictionaries, and inline variables.
• CMS page variable system.
• configurable dynamic form control.
• configurable grid control.
Connected HOS
I was a full-stack developer in charge of implementing functionalities front to back using the latest versions of Angular and .NET.
React Developer
Vue Developer
Education
Master’s Degree in Databases
Bucharest University of Economic Studies - Bucharest, Romania
Skills
Libraries/APIs
PrimeNG, Entity Framework, SignalR, Node.js, jQuery, React, Vue, Backbone.js, Vuex, REST APIs
Tools
Visual Studio, Git, GitHub, Jira, Dapper, Angular CLI, Azure DevOps Services, Amazon CloudFront CDN, Trello, JSX, TeamCity, Figma, GitLab
Languages
JavaScript, C#, TypeScript, SQL, CSS, C#.NET, HTML5, HTML
Frameworks
Angular, .NET, Bootstrap, Electron, Ionic, AngularJS, Bootstrap 3+, Express.js, Material UI, Entity Framework Core, .NET Core, Windows PowerShell, Redux, Next.js, Cypress, ASP.NET Core MVC, JSON Web Tokens (JWT), ASP.NET, .NET 6
Paradigms
REST, Agile, Azure DevOps, Microservices Architecture, DevOps, Desktop App Development, Microservices, JavaScript Object Model (JSOM), Server-side Object Model (SSOM), Mobile Development, Refactoring
Platforms
Visual Studio Code (VS Code), SharePoint, Azure, Docker, Amazon Web Services (AWS), iOS, Android, Amazon EC2
Storage
Databases, Amazon S3 (AWS S3), MongoDB, Redis, MySQL, Microsoft SQL Server, PostgreSQL, Amazon DynamoDB
Other
Software Development, Full-stack, Web Development, Okta, Team Leadership, Software, Front-end, Back-end, Full-stack Development, CI/CD Pipelines, Leadership, Containers, Cordova, Progressive Web Applications (PWAs), Software Architecture, API Integration, OAuth, Responsive Web Apps, Web MVC, Content Management Systems (CMS), Octopus Deploy, Large Language Models (LLMs), Artificial Intelligence (AI)
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