Paul Vasile, Developer in Bucharest, Romania
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Paul Vasile

Verified Expert  in Engineering

Bio

Paul is a senior mobile and full-stack developer with a strong background in cybersecurity. With years of experience in the industry, he is proficient in developing and implementing secure systems for mobile and web applications. In addition to his technical skills, he is known for his strong problem-solving abilities and effective communication with team members and clients. Overall, Paul is a valuable asset to any project and is dedicated to delivering high-quality work.

Portfolio

LCI Traders & Developers LLP
iOS, Swift, SwiftUI, Version Control, UIKit, Core Data, Testing, UI Testing...
National Institute for Research and Development in Informatics
Penetration Testing, SQL, Software Architecture, Python, CI/CD Pipelines...
Property Finder FZ LLC
iOS, Swift, Async/Await, iOS SDK, MapKit

Experience

  • iOS - 6 years
  • Software Architecture - 6 years
  • APIs - 6 years
  • CI/CD Pipelines - 6 years
  • Web App Development - 5 years
  • Swift - 5 years
  • Mobile Development - 5 years
  • SwiftUI - 4 years

Availability

Part-time

Preferred Environment

Slack, Jira, Git, Zoom, Webex, Teams, Confluence, Bitbucket, Azure DevOps, Amazon Web Services (AWS)

The most amazing...

...system I've created is a highly scalable app that is used to test the security of all the cash registers currently sold in the Romanian market.

Work Experience

Mobile and Back-end Lead Developer

2024 - PRESENT
LCI Traders & Developers LLP
  • Created the MVP for the business based on existing designs and the product idea.
  • Contributed to shaping the business model and feature prioritization.
  • Delivered the mobile product and the back-end infrastructure in time for the scheduled release.
  • Assisted with user acquisition, retention, and feedback collection.
Technologies: iOS, Swift, SwiftUI, Version Control, UIKit, Core Data, Testing, UI Testing, Multithreading, SDKs, Firebase, REST APIs, Node.js, DevOps, Express.js, Amazon Web Services (AWS), PostgreSQL

Senior Researcher and Head of Cybersecurity

2020 - 2025
National Institute for Research and Development in Informatics
  • Mentored junior team members, helping them to develop their skills and advance their careers in cybersecurity research.
  • Created and maintained detailed documentation of all research projects, providing clear and concise reports for management and stakeholders.
  • Led the research team in conducting comprehensive security audits of most of our organization's systems, reducing cyber threats.
  • Negotiated a partnership with a leading cybersecurity firm, resulting in access to cutting-edge tools and resources for the team.
  • Implemented a new method for analyzing and prioritizing potential vulnerabilities, resulting in a 50% increase in efficiency.
Technologies: Penetration Testing, SQL, Software Architecture, Python, CI/CD Pipelines, Microservices, Architecture, Docker, Networks, Web Security

Principal iOS Engineer

2024 - 2024
Property Finder FZ LLC
  • Contributed to and implemented user-facing components following designs provided in Figma.
  • Improved app performance by following user sessions in Instabug and other tracking tools.
  • Participated in the code review process for peers and provided code improvement suggestions.
  • Contributed towards increasing the code coverage by adding unit tests to the codebase.
  • Improved security by implementing an SSL pinning system for the mobile app with remote configuration.
Technologies: iOS, Swift, Async/Await, iOS SDK, MapKit

Mobile Developer

2024 - 2024
Live EQ LLC
  • Adjusted the existing app to the new business requirements by integrating new features.
  • Tracked and fixed issues using reporting tools and profilers.
  • Optimized loading times by looking into old code and refactored it to improve performance.
Technologies: Mobile Apps, Mobile UI, Mobile UX, iOS, Android

Full-stack React/Swift Developer

2023 - 2024
SINES, Inc
  • Developed and actively maintained the whole infrastructure, app feature cycle, and payments system.
  • Improved trial conversion rate by integrating a streamlined sign-up experience.
  • Improved user base by integrating SSO solutions (Apple, Google) across the ecosystem (iOS app, web app).
Technologies: React, iOS, Node.js, Swift, MySQL, DigitalOcean, Google Tag Manager, Search Engine Optimization (SEO), Stripe, Stripe Checkout, Terraform, Fastly

Full-stack Developer (via Toptal)

2023 - 2024
Terra-bate LLC
  • Developed a mobile app that served as a marketplace for eco-friendly products.
  • Worked on creating the interface layer between the app, Stripe, and Plaid. This facilitated a cashback payment feature for the users.
  • Oversaw the design process, architecture, and implementation of the app.
Technologies: Firebase, Stripe, Google Cloud Functions, Node.js, Swift, JavaScript, Stripe Payments, MapKit

Point of Sales Expert

2023 - 2023
fiskaltrust consulting gmbh
  • Developed features that helped the client adapt to the Spanish and Italian markets.
  • Researched, planned, and implemented the transition from the first-generation hardware security module to the second-generation one.
  • Planned and implemented the cash register receipt printing engine for the Italian market.
  • Fixed issues that were present in the code repository and configured automated testing in the CI/CD pipeline.
Technologies: C#, .NET, Point of Sale, POS

Mobile Developer

2023 - 2023
Omnis Inc.
  • Delivered the MVP that helped the client obtain financing and proceed to the next step for his startup.
  • Defined specifications and project requirements, designed the user experience and user interface, and refined them by constantly iterating with the client.
  • Oversaw and managed the other developers by reviewing pull requests, mentoring a junior developer, and leading status meetings.
Technologies: React Native, Amazon Web Services (AWS), APIs, JavaScript, Python, .NET, PayPal API, Swift, SwiftUI

Freelance Software Engineer

2023 - 2023
Beyond Wealthtech Limited
  • Developed a clean and easy-to-use UI to facilitate app usage.
  • Integrated new UI components with existing modules and fine-tuned the performance.
  • Added validation rules for user input to filter out unwanted outputs from the software.
Technologies: C#.NET WinForms, Windows, Azure DevOps, .NET

Experience

Mobile App for a Fintech Startup

An MVP for a mobile app that was designed to facilitate loans between friends and family. I acted as the lead tech architect, and my responsibilities were defining project requirements, designing the user experience, managing the other developers, and implementing features myself.

Mobile App for Offline Chatting

https://apps.apple.com/ro/app/offchat/id6446938850
A SwiftUI app that lets users chat in environments that do not have Wi-Fi, such as airplanes, boats, or restricted areas. It works by leveraging Bluetooth's low energy for device pairing and a mix between Wi-Fi Direct and Bluetooth to send messages and media.

A Civil Services Application for Government Authorities

http://www.e-timis.ro
A full-stack application designed to simplify and streamline civil services provided by government authorities. The platform offers a range of services to citizens, from online payment of taxes and fees to booking appointments with government officials and managing citizen requests from a centralized system.

E-learning Platform for an Educational Center

I was the development team lead tasked with building a platform that should provide high-quality online courses to students worldwide, delivering interactive learning experiences. I also maintained and updated the platform, including implementing new features and integrations.

Web Application for Managing Activity in a Vet Clinic

I designed, implemented, and tested a full-stack web application to help a veterinarian clinic manage the day-to-day operations, keep track of medical stocks, monitor vital metrics, and maintain a fast, scalable client database. I implemented custom functionalities tailored to the client's business logic, such as commission calculations and shipment management.

Integrated Software | Next-generation Cash Registers

I architected and implemented a highly scalable application consisting of multiple microservices, a front-end component, and a cryptography provider. The scope of the app was to collect the data sent from the next-generation cash registers in Romania to validate the authenticity and integrity of the sales.

Mobile Wallet for Digital Identity

I managed the development of a mobile wallet for iOS that was used to manage user identity. The app was designed to provide a secure and convenient way for users to manage and verify their digital identities. To ensure the app's security, I implemented advanced measures such as biometric authentication and encryption to protect sensitive personal information. I also worked closely with UX designers to create an intuitive and user-friendly interface for managing and verifying digital identities.

Stock Market Automation Tool

I contributed as a freelance developer to a stock market automation tool to make it more accessible to non-technical users. I was tasked with building an intuitive GUI and integrating all the features present in the console version of the app.

Education

2019 - 2021

Master's Degree in Software Engineering

University of Bucharest - Bucharest, Romania

2016 - 2019

Bachelor's Degree in Computer Science

University of Bucharest - Bucharest, Romania

Certifications

JULY 2020 - PRESENT

Certified Ethical Hacker

EC-Council

JUNE 2015 - PRESENT

Cambridge Advanced English

University of Cambridge

Skills

Libraries/APIs

Node.js, React, Windows Forms (WinForms), PayPal API, SignalR, Stripe, REST APIs

Tools

C#.NET WinForms, Confluence, Bitbucket, Stripe Checkout, Terraform, Fastly

Languages

JavaScript, SQL, Python, HTML5, TypeScript, C#, Swift, Go, XML

Frameworks

React Native, .NET, SwiftUI, Core Data, UIKit, MapKit, Combine, WidgetKit, EventKit, CloudKit, NestJS, Redux, iOS SDK, Express.js

Paradigms

Penetration Testing, Mobile Development, Azure DevOps, Microservices, Search Engine Optimization (SEO), Testing, DevOps

Platforms

iOS, Docker, Amazon Web Services (AWS), Android, Azure, Shopify, WordPress, Windows, Firebase, Bluetooth Low Energy (LE), DigitalOcean

Storage

PostgreSQL, Microsoft SQL Server, MySQL

Other

Software Architecture, APIs, Web App Development, Full-stack, Mobile Apps, Front-end, Web Development, Mobile Web, Responsive UI, Architecture, Networks, Web Security, Point of Sale, POS, CI/CD Pipelines, Full-stack Development, Secure Storage, WebSockets, Public-key Cryptography, User Interface (UI), User Experience (UX), Integration, Google Cloud Functions, Stripe Payments, Mobile UI, Mobile UX, Bluetooth, WiFi, WiFi Direct, Async/Await, Google Tag Manager, Version Control, UI Testing, Multithreading, SDKs

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