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Re:Ask HN: Who wants to be hired? (December 2025) on Tuesday December 02, 2025 @03:55AM (#46119102)
Location: Romania, EU

Remote: Yes

Willing to relocate: Yes

Technologies: C++, C#, .NET, Python, SQL, TypeScript, JavaScript, Windows, macOS, Linux, embedded

Portfolio: https://www.efficientcat.com/portfolio

Email: [email protected]

LinkedIn: https://www.linkedin.com/in/cosmin-pirvu

Senior product engineer specialized in platforms and SDKs. Proven track record of delivering new products, short and long‐term strategies, MVPs, new features, performance improvements, major fixes and migrations to new technologies.

Successfully built and delivered cloud apps, desktop apps, mobile apps and embedded projects.

Can build, manage and deliver apps and features end‐to‐end.

Re:Ask HN: Who wants to be hired? (November 2025) on Wednesday November 05, 2025 @06:23AM (#45821697)
Location: Romania, EU

Remote: Yes

Willing to relocate: Yes

Technologies: C++, C#, .NET, Python, SQL, TypeScript, JavaScript, Windows, macOS, Linux, embedded

Portfolio: https://www.efficientcat.com/portfolio

Email: [email protected]

LinkedIn: https://www.linkedin.com/in/cosmin-pirvu

Senior product engineer specialized in platforms and SDKs. Proven track record of delivering new products, short and long‐term strategies, MVPs, new features, performance improvements, major fixes and migrations to new technologies.

Successfully built and delivered cloud apps, desktop apps, mobile apps and embedded projects.

Can build, manage and deliver apps and features end‐to‐end.

Re:Ask HN: Who wants to be hired? (October 2025) on Wednesday October 01, 2025 @06:33PM (#45444396)

  Location: Romania, EU
  Remote: Yes
  Willing to relocate: Yes
  Technologies: C++, C#, .NET, Python, SQL, TypeScript, JavaScript, Windows, macOS, Linux, embedded
  Portfolio: https://www.efficientcat.com/portfolio
  Email: [email protected]
  LinkedIn: https://www.linkedin.com/in/cosmin-pirvu
Specialised in cross-platform Windows / Linux / macOS desktop apps and server services. Proven track record of delivering new products, short and long‐term strategies, MVPs, new features, performance improvements, major fixes and migrations to new technologies.

Successfully built and delivered cloud apps, desktop apps, mobile apps and embedded projects.

Can build, manage and deliver apps and products end‐to‐end.

Re:Ask HN: Who wants to be hired? (September 2025) on Sunday September 14, 2025 @10:53AM (#45240199)

  Location: Romania, EU
  Remote: Yes
  Willing to relocate: Yes
  Technologies: C++, C#, .NET, Python, SQL, TypeScript, JavaScript, Windows, macOS, Linux, embedded
  Portfolio: https://www.efficientcat.com/portfolio
  Email: [email protected]
  LinkedIn: https://www.linkedin.com/in/cosmin-pirvu
Specialised in cross-platform Windows / Linux / macOS desktop apps and server services. Proven track record of delivering new products, short and long‐term strategies, MVPs, new features, performance improvements, major fixes and migrations to new technologies.

Successfully built and delivered cloud apps, desktop apps, mobile apps and embedded projects.

Can build, manage and deliver apps and products end‐to‐end.

Re:Ask HN: Who wants to be hired? (July 2025) on Monday July 07, 2025 @03:46AM (#44487722)

  Location: Romania, EU
  Remote: Yes
  Willing to relocate: Yes
  Technologies: React Native, React, TypeScript, JavaScript, C++, C#, .NET, Python, SQL, AWS, Azure, Windows, macOS, Linux, iOS, Android, embedded
  Portfolio: https://www.efficientcat.com/portfolio
  Email: [email protected]
  LinkedIn: https://www.linkedin.com/in/cosmin-pirvu
Product Engineering Leader specialized in optimizations and performance engineering. Proven track record of delivering new products, short and long‐term strategies, MVPs, new features, performance improvements, major fixes and migrations to new technologies.

Successfully built and delivered cloud apps, desktop apps, mobile apps and embedded projects with millions of users.

Can build, manage and deliver apps and products end‐to‐end.

Re:Ask HN: Who wants to be hired? (June 2025) on Monday June 02, 2025 @02:49PM (#44161801)

  Location: Romania, EU
  Remote: Yes
  Willing to relocate: Yes
  Technologies: React Native, React, TypeScript, JavaScript, C++, C#, .NET, Python, SQL, AWS, Azure, Windows, macOS, Linux, iOS, Android, embedded
  Portfolio: https://www.efficientcat.com/portfolio
  Email: [email protected]
  LinkedIn: https://www.linkedin.com/in/cosmin-pirvu
Software architect and development manager specialised in platforms and SDKs. When I'm not building products from an idea to the final release I am usually adding features and improvements to live apps.

Can code, manage and build pretty much anything.

Re:Ask HN: Who wants to be hired? (May 2025) on Thursday May 01, 2025 @01:08PM (#43860470)
Location: Romania, EU

Remote: Yes

Willing to relocate: Yes

Technologies: React Native, React, TypeScript, JavaScript, C++, C#, .NET, Python, SQL, AWS, Azure, Windows, macOS, Linux, iOS, Android, embedded

Portfolio: https://www.efficientcat.com/portfolio

Email: [email protected]

LinkedIn: https://www.linkedin.com/in/cosmin-pirvu

Product engineering leader specialised in performance engineering. I love optimisations and working on platforms and SDKs, but can build apps as well. Usually I build things end-to-end and can easily jump into an existing codebase to add features and improvements.

Looking for an individual contributor role.

Re:Ask HN: Who wants to be hired? (February 2025) on Monday February 03, 2025 @03:02PM (#42922220)
Location: Romania, EU

Remote: Yes

Willing to relocate: Yes

Technologies: C++, React Native, React, TypeScript, JavaScript, Python, C#, .NET, SQL, AWS, Azure, Windows, macOS, Linux, iOS, Android, embedded

Portfolio: https://www.efficientcat.com/portfolio

Email: [email protected]

LinkedIn: https://www.linkedin.com/in/cosmin-pirvu

T-shaped software developer and technical product manager. I love building products, so if you need some help, don't hesitate to contact me.

Re:Ask HN: Who wants to be hired? (January 2025) on Friday January 03, 2025 @05:38AM (#42584435)
Location: Romania, EU

Remote: Yes

Willing to relocate: Yes

Technologies: React, React Native, C++, TypeScript, JavaScript, Python, C#, .NET, SQL, AWS, Azure, Windows, macOS, Linux, iOS, Android, embedded

Résumé/CV: On request

Email: [email protected]

LinkedIn: https://www.linkedin.com/in/cosmin-pirvu

StackOverflow: https://stackoverflow.com/users/527987/cosmin

T-shaped developer and technical product manager. I specialise in building products from start to finish, but can also refactor and optimise live products. Startup mindset, so I can work with minimal requirements and wear many hats.

Re:Ask HN: Who wants to be hired? (December 2024) on Monday December 02, 2024 @02:49PM (#42299671)

  Location: Romania, EU
  Remote: Yes
  Willing to relocate: Yes
  Technologies: C++, React, React Native, TypeScript, JavaScript, Python, C#, .NET, SQL, AWS, Azure, Windows, macOS, Linux, iOS, Android, embedded
  Résumé/CV: On request
  Email: [email protected]
LinkedIn: https://www.linkedin.com/in/cosmin-pirvu

StackOverflow: https://stackoverflow.com/users/527987/cosmin

Software development manager looking for an individual contributor role. Full stack and prefer working on SDKs and platforms, but can build apps as well.

Re:Ask HN: Who wants to be hired? (November 2024) on Saturday November 02, 2024 @01:19AM (#42024221)

  Location: Romania, EU
  Remote: Yes
  Willing to relocate: Yes
  Technologies: C++, React, React Native, TypeScript, JavaScript, Python, C#, .NET, SQL, AWS, Azure, Windows, macOS, Linux, iOS, Android, embedded
  Résumé/CV: On request
  Email: [email protected]
LinkedIn: https://www.linkedin.com/in/cosmin-pirvu

StackOverflow: https://stackoverflow.com/users/527987/cosmin

Software development manager looking for an individual contributor role. Full stack and prefer working on SDKs and platforms, but can build apps as well.

Re:Ask HN: Freelancer? Seeking freelancer? (October 2024) on Thursday October 03, 2024 @01:51PM (#41733035)
SEEKING WORK | EU / Romania / Netherlands | REMOTE (Worldwide)

Technologies: C++, React, React Native, TypeScript, JavaScript, Python, C#, .NET, SQL, AWS, Azure, Windows, macOS, Linux, iOS, Android, embedded

I run a small family-owned software development agency and can build and deliver new products, short and long‐term strategies, startup MVPs, new features, major fixes and migrations to new technologies.

I have successfully built and delivered cloud apps, desktop apps, mobile apps and embedded projects. And worked with companies of all sizes, from startups to 60k+ employees.

We focus on building robust, high-performance software at a fair price, while also providing QA, UX, and content writing and editing services in both English and Spanish.

LinkedIn: https://www.linkedin.com/in/cosmin-pirvu

StackOverflow: https://stackoverflow.com/users/527987/cosmin

Email: [email protected]

Re:Ask HN: Who wants to be hired? (October 2024) on Wednesday October 02, 2024 @08:24AM (#41719825)
Location: Romania / Netherlands EU

Remote: Yes

Willing to relocate: Yes

Technologies: C++, React, React Native, TypeScript, JavaScript, Python, C#, .NET, SQL, AWS, Azure, Windows, macOS, Linux, iOS, Android, embedded

Résumé/CV: On request

LinkedIn: https://www.linkedin.com/in/cosmin-pirvu

StackOverflow: https://stackoverflow.com/users/527987/cosmin

Email: [email protected]

I have over 16 years of experience as a Technical Product Manager and Senior Software Engineer. And I mainly build and deliver new products, short and long‐term strategies, startup MVPs, new features, major fixes and migrations to new technologies.

Successfully built and delivered cloud apps, desktop apps, mobile apps and embedded projects. And worked for companies of all sizes, from startups to 60k+ employees.

Re:Ask HN: Freelancer? Seeking freelancer? (September 2024) on Tuesday September 03, 2024 @10:44AM (#41435462)
SEEKING WORK | Romania, EU | REMOTE

Technologies: C++, React, React Native, TypeScript, JavaScript, Python, C#, .NET, SQL, AWS, Azure, Windows, macOS, Linux, iOS, Android, embedded

Résumé/CV: On request

LinkedIn: https://www.linkedin.com/in/cosmin-pirvu

StackOverflow: https://stackoverflow.com/users/527987/cosmin

Email: [email protected]

Fractional CTO and senior full stack developer with a background in product management. I specialize in delivering new products and MVPs as a comprehensive one-man team.

Worked for companies of all sizes, from startups to Fortune 500. And successfully built and delivered cloud apps, desktop apps, mobile apps and embedded projects.

Re:Ask HN: Who wants to be hired? (September 2024) on Tuesday September 03, 2024 @10:41AM (#41435437)
Location: Romania, EU

Remote: Yes

Willing to relocate: Yes

Technologies: C++, React, React Native, TypeScript, JavaScript, Python, C#, .NET, SQL, AWS, Azure, Windows, macOS, Linux, iOS, Android, embedded

Résumé/CV: On request

LinkedIn: https://www.linkedin.com/in/cosmin-pirvu

StackOverflow: https://stackoverflow.com/users/527987/cosmin

Email: [email protected]

Fractional CTO and senior full stack developer with a product management background. Worked for companies of all sizes, from startups to Fortune 500. And successfully built and delivered cloud apps, desktop apps, mobile apps and embedded projects.

Re:Ask HN: Who wants to be hired? (August 2024) on Friday August 09, 2024 @04:22AM (#41199875)
Hello Manuel,

Thanks for the nice words. I enjoyed our talk and I hope you found someone in the end. I also really liked the product and hope things are going great.

Re:Ask HN: Freelancer? Seeking freelancer? (August 2024) on Friday August 02, 2024 @01:45AM (#41136398)
SEEKING WORK | REMOTE

Location: Romania

Technologies: C++, React, React Native, TypeScript, JavaScript, Python, C#, .NET, SQL, AWS, Azure, Windows, macOS, Linux, iOS, Android, embedded

Résumé/CV: On request

LinkedIn: https://www.linkedin.com/in/cosmin-pirvu

StackOverflow: https://stackoverflow.com/users/527987/cosmin

Email: [email protected]

Fractional CTO and senior full stack developer with a background in product management. I specialize in delivering new products and MVPs as a comprehensive one-man team.

Worked for companies of all sizes, from startups to Fortune 500. And successfully built and delivered cloud apps, desktop apps, mobile apps and embedded projects with millions of users.

Can also deliver short and long‐term strategies, new features, performance improvements, major fixes and migrations to new technologies.

Re:Ask HN: Who wants to be hired? (August 2024) on Friday August 02, 2024 @01:36AM (#41136360)
Location: Romania

Remote: Yes

Willing to relocate: Yes

Technologies: C++, React, React Native, TypeScript, JavaScript, Python, C#, .NET, SQL, AWS, Azure, Windows, macOS, Linux, iOS, Android, embedded

Résumé/CV: On request

LinkedIn: https://www.linkedin.com/in/cosmin-pirvu

StackOverflow: https://stackoverflow.com/users/527987/cosmin

Email: [email protected]

Fractional CTO and senior full stack developer with a product management background. Worked for companies of all sizes, from startups to Fortune 500. And successfully built and delivered cloud apps, desktop apps, mobile apps and embedded projects with millions of users.

Can deliver new products, short and long‐term strategies, MVPs, new features, performance improvements, major fixes and migrations to new technologies.

Re:Ask HN: Freelancer? Seeking freelancer? (July 2024) on Monday July 01, 2024 @02:00PM (#40848426)
SEEKING WORK | REMOTE

Location: Romania

Technologies: C++, React, React Native, TypeScript, JavaScript, Python, C#, .NET, SQL, AWS, Azure, Windows, macOS, Linux, iOS, Android, embedded

Résumé/CV: On request

LinkedIn: https://www.linkedin.com/in/cosmin-pirvu

StackOverflow: https://stackoverflow.com/users/527987/cosmin

Email: [email protected]

Startup CTO specialized in platforms and SDKs. Can build, manage and deliver apps and projects end‐to‐end. And I'm also available as an IC (full stack, backend, frontend).

Re:Ask HN: Who wants to be hired? (July 2024) on Monday July 01, 2024 @01:58PM (#40848402)
Location: Romania

Remote: Yes

Willing to relocate: Yes

Technologies: C++, React, React Native, TypeScript, JavaScript, Python, C#, .NET, SQL, AWS, Azure, Windows, macOS, Linux, iOS, Android, embedded

Résumé/CV: On request

LinkedIn: https://www.linkedin.com/in/cosmin-pirvu

StackOverflow: https://stackoverflow.com/users/527987/cosmin

Email: [email protected]

Startup CTO specialized in platforms and SDKs. Can build, manage and deliver apps and projects end‐to‐end. And I'm also available as an IC (full stack, backend, frontend).

Re:Ask HN: Freelancer? Seeking freelancer? (June 2024) on Sunday June 09, 2024 @02:46AM (#40622517)
SEEKING WORK| REMOTE

Location: Romania | European Union

Technologies: C++, React, React Native, TypeScript, JavaScript, Python, C#, .NET, SQL, AWS, Azure, Windows, macOS, Linux, iOS, Android, embedded

Résumé/CV: On request

LinkedIn: https://www.linkedin.com/in/cosmin-pirvu

StackOverflow: https://stackoverflow.com/users/527987/cosmin

Email: [email protected]

Startup CTO with 16 years of experience. Can build, manage and deliver apps and projects end‐to‐end. And I'm also available as an IC (full stack, backend, frontend).

Re:Ask HN: Who wants to be hired? (June 2024) on Monday June 03, 2024 @03:14PM (#40566391)
Location: Romania

Remote: Yes

Willing to relocate: Yes

Technologies: C++, React, React Native, TypeScript, JavaScript, Python, C#, .NET, SQL, AWS, Azure, Windows, macOS, Linux, iOS, Android, embedded

Résumé/CV: On request

LinkedIn: https://www.linkedin.com/in/cosmin-pirvu

StackOverflow: https://stackoverflow.com/users/527987/cosmin

Email: [email protected]

Startup CTO with a product management background and 16 years of experience. Can build, manage and deliver apps and projects end‐to‐end. And I'm also available as an IC (full stack, backend, frontend).

Re:Ask HN: Who wants to be hired? (May 2024) on Wednesday May 01, 2024 @05:31PM (#40229764)
Location: Romania

Remote: Yes (worldwide)

Willing to relocate: Yes (EU)

Technologies: C++, React, React Native, TypeScript, JavaScript, Python, C#/.NET, SQL, AWS/Azure, Windows, macOS, Linux, iOS/Android, embedded

Résumé/CV: On request

LinkedIn: https://www.linkedin.com/in/cosmin-pirvu

StackOverflow: https://stackoverflow.com/users/527987/cosmin

Email: [email protected]

Startup CTO with 16 years of experience. Can build, manage and deliver apps and projects end‐to‐end.

Re:Ask HN: Who wants to be hired? (July 2023) on Sunday July 09, 2023 @04:56AM (#36652858)
Location: Romania, EU

Remote: Yes

Willing to relocate: Yes

Technologies: C++, Python, JavaScript, TypeScript, Node, React, React Native, SQL, AWS, Azure, Windows, macOS, Linux, iOS, Android, embedded

Résumé/CV: On request

LinkedIn: https://www.linkedin.com/in/cosmin-pirvu

Stack Overflow: https://stackoverflow.com/users/527987/cosmin

Email: [email protected]

I have 15 years of experience in different roles and I am specialized in platforms and SDKs. Currently looking for an IC role.

Re:Ask HN: Who is hiring? (July 2023) on Tuesday July 04, 2023 @04:43AM (#36583927)
Location: Romania, EU

Remote: Yes

Willing to relocate: Yes

Technologies: C++, Python, JavaScript, TypeScript, Node, React, React Native, SQL, AWS, Azure, Windows, macOS, Linux, iOS, Android, embedded

Résumé/CV: On request

LinkedIn: https://www.linkedin.com/in/cosmin-pirvu

Stack Overflow: https://stackoverflow.com/users/527987/cosmin

Email: [email protected]

I have 15 years of experience in different roles and I am specialized in platforms and SDKs. Currently looking for an IC role.

Re:Ask HN: Who wants to be hired? (June 2023) on Wednesday June 07, 2023 @03:49AM (#36224093)

  Location: Romania, EU
  Remote: Yes
  Willing to relocate: Yes
  Technologies: C++, Python, JavaScript, TypeScript, Node, React, React Native, SQL, AWS, Azure, Windows, macOS, Linux, iOS, Android, embedded
  Résumé/CV: On request
  LinkedIn: https://www.linkedin.com/in/cosmin-pirvu
  Email: [email protected]
I have 15 years of experience in different roles and I am specialized in platforms and SDKs. Looking for a team that needs a full stack generalist.
Re:Ask HN: Freelancer? Seeking freelancer? (May 2023) on Monday May 08, 2023 @06:37AM (#35860068)
SEEKING WORK | Romania and EU | Remote Worldwide

Technologies: C++, Python, JavaScript, TypeScript, Node, React, React Native, SQL, AWS, Azure, Windows, macOS, Linux, iOS, Android, embedded

Résumé/CV: On request

LinkedIn: https://www.linkedin.com/in/cosmin-pirvu

Email: [email protected]

I have 15 years of experience in companies of all sizes. And I have been a product manager, senior engineer, lead and senior manager. Currently I am looking to start a contracting shop and I am looking for work. Only available as B2B in any time zone (US, Europe, Asia, Australia) for any role. I can work in teams of any size, on startups and old codebases, and with pretty much any technology.

My rates are competitive at the EU level and I have over 5 years experience working directly with clients, so I can understand all of your requirements and make sure you get exactly what you want.

Re:Ask HN: Who wants to be hired? (May 2023) on Tuesday May 02, 2023 @06:03AM (#35785353)
Location: Romania, EU

Remote: Yes

Willing to relocate: Yes

Technologies: C++, Python, JavaScript, TypeScript, Node, React, React Native, SQL, AWS, Azure, Windows, macOS, Linux, iOS, Android, embedded

Résumé/CV: On request

LinkedIn: https://www.linkedin.com/in/cosmin-pirvu

Email: [email protected]

Former startup founder looking for a new role. Half of my experience is in management and the other half writing code.

Re:Ask HN: Who wants to be hired? (April 2023) on Tuesday April 04, 2023 @06:45AM (#35437585)

  Location: Romania, EU
  Remote: Yes
  Willing to relocate: No
  Technologies: C++, Python, JavaScript, TypeScript, Node, React, React Native, SQL, AWS, Azure, Windows, macOS, Linux, iOS, Android, embedded
  Résumé/CV: On request
  LinkedIn: https://www.linkedin.com/in/cosmin-pirvu
  Email: [email protected]
Former founder looking for a startup role: Senior Full Stack Engineer, Founding Engineer, Product Manager/Owner or even CTO. I usually wear multiple hats, learn fast and use a lot of different tools.
Re:Ask HN: Freelancer? Seeking freelancer? (March 2023) on Thursday March 02, 2023 @12:55AM (#34992496)
SEEKING WORK | Romania, EU | Remote

Former founder looking for work. I usually wear multiple hats, learn fast and use a lot of different tools.

  Technologies: C++, Python, JavaScript, TypeScript, Node, React, React Native, SQL, AWS, Azure, Windows, macOS, Linux, iOS, Android, embedded
  LinkedIn: https://www.linkedin.com/in/cosmin-pirvu
  Email: [email protected]

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