Valentin-Tudor is available for hire

Valentin-Tudor Diaconeasa

Verified Expert in Engineering

Software Developer

Bucharest, Romania

Toptal member since June 21, 2022

Expertise

Programming Code Review API Design Engineering Management Xcode iOS UIKit Cocoa JSON REST APIs Swift Unit Testing Data Synchronization SQL

Bio

Valentin is a strong team lead with a lot of experience in iOS mobile development, strong mobile architecture skills, and a good eye for product. He enjoys complex projects and clean solutions as well as innovative, new platforms that bring something new and useful to the users. Valentin is proficient in the latest iOS development technologies and frameworks and has significant experience designing and developing APIs and platform integration solutions.

Portfolio

Evowise

Swift, Java 11, Druid.io, Apache, Communication, Stakeholder Management...

Deutsche Bank

Software Architecture, CI/CD Pipelines, Xcode, Swift, Leadership...

IBM

Mobile Architecture, Coaching, Training, Mobile Development, Estimations, Xcode...

Experience

Mobile Architecture - 13 years UIKit - 12 years Unit Testing - 8 years Swift - 8 years Estimations - 8 years Engineering Management - 7 years Mobile Security - 6 years

Availability

Part-time

Preferred Environment

Xcode, Swift, iOS

The most amazing...

...thing I've built is an online advertising platform. Optimized for large volumes like over 1 billion events daily, campaign performance tracking, and targeting.

Work Experience

Vice President of Software Development

2019 - 2022

Evowise

Created an email campaign execution and management platform (MINT).
Built a BI, data analytics, and fast-query platform (THYME).
Brought value by targeting campaigns through data analytics and clustering.
Developed the main iOS client for the iPad, using SwiftUI.
Defined, budgeted, and delivered software, including back end, front end, middleware, and third-party integrations. I also measured, tested, and supported the company’s software platforms.
Handled the entire development cycle from initial architecture to market, feedback, and continuous support.

Technologies: Swift, Java 11, Apache, Druid.io, Communication, Stakeholder Management, Recruiting, Budget Management, SwiftUI, Unit Testing, Model View ViewModel (MVVM), Estimations, Agile Delivery, Scrum Product Owner, Budgeting, Alamofire, Engineering Management, Solutioning, Mobile Security, CI/CD Pipelines, Programming, Databases, Artificial Intelligence (AI), Statistics, MongoDB, Software Architecture, Leadership, People Management, Presentations, Mobile Architecture, Coaching, Training, Mobile Development, iOS, Data Synchronization, REST, Firebase, Firebase iOS SDK, Firebase Authentication, APIs, JSON, REST APIs, JSON REST APIs, API Design, API Documentation, Software Analysis, Native Mobile Apps, Mobile Apps, Cloud Firestore, Architecture, Technical Hiring, Source Code Review, Code Review, Interviewing, Task Analysis, SQL

Vice President of Engineering

2018 - 2019

Deutsche Bank

Delivered mobile apps in the DB Global Technology Center (BEX), both client-facing and enterprise apps. Implemented features on the mobile app for IOS, day by day.
Negotiated with stakeholders, proposed business plans, chose the right technologies, and followed up on plans for their implementation while keeping a close eye on budgets and timelines.
Defined, measured, and refined the delivery process for all mobile applications developed in the technology center.
Collaborated with other areas and projects for maximizing synergies in the center.
Created new opportunities and started new projects for the local center by working with various stakeholders in the bank.
Contributed to the continuous transformation of organizing the Private and Commercial Clients (PCC) department, being an active member of the strategy, people, and leadership councils.

Technologies: Software Architecture, CI/CD Pipelines, Xcode, Swift, Leadership, People Management, Presentations, Budgeting, Estimations, Agile Delivery, iOS, Unit Testing, UIKit, Alamofire, Engineering Management, Solutioning, Mobile Security, Programming, Databases, Communication, Recruiting, Mobile Architecture, Coaching, Training, Mobile Development, Cocoa, REST, APIs, JSON, REST APIs, JSON REST APIs, API Design, API Documentation, Software Analysis, Native Mobile Apps, Mobile Apps, Architecture, Technical Hiring, Source Code Review, Code Review, Interviewing, Task Analysis, SQL

Practice Area Lead for Mobile for Interactive Experience, Mobile Architect, and People Manager

2015 - 2018

IBM

Built a complex, interconnected family of five enterprise iOS applications for the German giant Bosch and Siemens Home Appliances. The project received multiple awards for innovation and fantastic feedback from the client.
Standardized the set of tools for mobile projects and collaborated on implementing a full DevOps stack used by many projects for planning, developing, testing, signing, releasing, monitoring, and gathering feedback through analytics.
Shared technical knowledge and created a collaborative learning environment. Organized tech talks, established best practices, and shared tech stack.
Created an integration architecture of mobile apps against complex SAP back ends via SAP mobile and cloud platforms.
Built software architectures for IOS enterprise solutions, mobile factories, and applications.
Designed, implemented, and documented a wide array of interlocking reusable IOS components that were reused in many projects.
Helped project stakeholders come together and agree on the most valuable features to be implemented and enabled them to set timelines for their projects in multiple planning and design thinking workshops.
Created teams, hired talents, mentored and inspired them, and established working standards to deliver on the project.
Provided effort and budget estimation for mobile factories, mobile applications, and frameworks.

Technologies: Mobile Architecture, Coaching, Training, Mobile Development, Estimations, Xcode, Swift, iOS, Unit Testing, Agile Delivery, SAP Cloud Platform Integration (CPI), UIKit, Alamofire, Engineering Management, Solutioning, Mobile Security, CI/CD Pipelines, Programming, Databases, Communication, Recruiting, Software Architecture, Leadership, People Management, Presentations, Data Synchronization, Cocoa, Core Data, REST, APIs, JSON, REST APIs, JSON REST APIs, API Design, API Documentation, Software Analysis, Native Mobile Apps, SQLite, Mobile Apps, Architecture, Technical Hiring, Source Code Review, Code Review, Interviewing, Task Analysis, SQL

iOS Technical Team Lead and Consultant

2013 - 2015

Softvision

Built a complex business-to-business application for the US farming sector. The main challenge was creating an advanced sync mechanism for a sizable database.
Organized the work according to Agile and Scrum principles. Oversaw the creation of the work breakdown structure for the project and provided estimates.
Managed communications with the clients for the entire development team.
Offered technical advice to the company's clients through proposals and provided feedback for the design documents.
Shared technical knowledge through tech talks and company-wide training for colleagues in the mobile tech area.
Held technical job interviews for the IOS position in the company.

Technologies: Swift, Xcode, Devices, Data Synchronization, iOS, Estimations, Agile Delivery, UIKit, Mobile Security, Programming, Databases, Communication, Software Architecture, Leadership, Mobile Architecture, Mobile Development, Cocoa, Core Data, REST, APIs, JSON, REST APIs, JSON REST APIs, API Design, API Documentation, Software Analysis, Native Mobile Apps, Mobile Apps, Architecture, Technical Hiring, Source Code Review, Code Review, Interviewing, Task Analysis, SQL

iOS Senior Software Engineer

2012 - 2013

SNG Resources

Implemented the Postcode Gazette iOS app. A mobile, geo-localized news app that also offered localized marketing, for the UK market.
Developed RESTful Web Services, built the UI in UIKit, and cached the offline data in core data.
Refactored the entire mobile app in two months' record time and added new functionality.

Technologies: Xcode, Objective-C, iOS, Agile Delivery, UIKit, Programming, Mobile Development, Cocoa, REST, APIs, JSON, REST APIs, JSON REST APIs, Software Analysis, Native Mobile Apps, Mobile Apps, Source Code Review, Code Review, Task Analysis

iOS Software Engineer

2010 - 2012

Telmap Services

Implemented the company's mobile white-label app Telmap Navigator for iOS and J2ME devices.
Implemented turn-by-turn navigation with location-based services, route calculations, and localized offers.
Developed complex navigation and professional map-services applications for mobile phones. The main challenge was creating a dynamic, flexible, and customizable back-end-driven user Interface at runtime.

Technologies: Xcode, Objective-C, C++, J2ME, Templates, Cocoa, iOS, Agile Delivery, UIKit, Programming, Mobile Development, REST, JSON, REST APIs, JSON REST APIs, Software Analysis, Native Mobile Apps, Mobile Apps, Source Code Review, Code Review

Software Engineer II

2009 - 2010

Electronic Arts

Implemented new gaming technologies for a next-gen game engine for IOS, containing modules for 3D graphics OpenGLES 2.0, sound, memory manager, 2D graphics, and texture manager.
Developed features for great mobile games such as Command and Conquer Red Alert and Worms.
Optimized mobile games to run on low-powered devices, as low as 128 kB of memory in J2ME.

Technologies: J2ME, 3D Textures, Game AI, 2D Games, C++, Objective-C, Agile Delivery, Programming, Mobile Development, REST, JSON

Software Engineer

2006 - 2008

ITC Networks | Aquired by Luxoft

Developed networking applications and network protocol implementations for L2 and L3 devices from the Nortel family.
Created embedded software on L3 switches, routers, and routing switches.
Led a team of three people that implemented and designed a Core networking protocol. Spanning tree protocol, in its multiple forms SPT, MSTP, and RSTP.

Technologies: C, C++, VxWorks, Cisco Networking, Programming, Devices, REST

Experience

Deutsche Bank | Germany

https://apps.apple.com/us/app/deutsche-bank-mobile/id1040475847

A Swift-based application covers all mobile banking needs of the Deutsche Bank customers in its home country, Germany, with functionality, including secure transfers, bank accounts, cards, Apple Pay, investments, financial reports, and personal finance assistance.

Mobile App Factory for BSH

https://www.apple.com/kz/business/success-stories/manufacturing/bsh/

A family of interconnected mobile apps for the home-appliances maintenance german giant BSH launched in over 10 countries. BSH repair contractors used the apps to plan their workday, report their work, access proprietary repair manuals, and handle parts returned to the factory. It brought a high revenue increase of over 15% for the company in the countries where it was launched.

Farm Management App

An iOS (Objective C and Swift) app used to fully automate (plan and track execution of work) vast farms, with workflows for planting, harvesting, and fertilizing crops. The app was making heavy use of custom maps, integrating with embedded farming equipment computers to get live data about the cargo via Bluetooth and BTLE and synced to the platform's server. It was a BtoE platform.

Education

2001 - 2006

Bachelor's Degree in Computer Science

Bucharest Academy of Economic Studies - Bucharest, Romania

Skills

Libraries/APIs

Alamofire, Firebase iOS SDK, REST APIs

Tools

Xcode, Firebase Authentication, Apache

Languages

Swift, SQL, Objective-C, C++, Java 11, C

Frameworks

UIKit, Cocoa, Core Data, SwiftUI

Paradigms

Model View ViewModel (MVVM), Unit Testing, Mobile Development, REST

Platforms

iOS, Firebase, J2ME, VxWorks, Bluetooth Low Energy (LE)

Storage

Data Synchronization, JSON, Databases, SQLite, Cloud Firestore, MongoDB, Druid.io

Other

Estimations, Agile Delivery, Engineering Management, Solutioning, Programming, Communication, Software Architecture, Leadership, People Management, Mobile Architecture, APIs, JSON REST APIs, API Design, API Documentation, Software Analysis, Native Mobile Apps, Mobile Apps, Architecture, Technical Hiring, Source Code Review, Code Review, Interviewing, Task Analysis, Scrum Product Owner, SAP Cloud Platform Integration (CPI), Mobile Security, CI/CD Pipelines, Coaching, Training, Devices, Budgeting, Artificial Intelligence (AI), Statistics, Stakeholder Management, Recruiting, Budget Management, Presentations, Templates, 3D Textures, Game AI, 2D Games, Cisco Networking

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