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Oscar Levin

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App Developer
Microsoft Powerpoint, Web Studio, Web Design
Microsoft Powerpoint, Web Studio, Web Design
My name is Oscar, I am a new grad and have a summer internship experience in Philadelphia, PA as a web developer. I'm ready to showcase my skills in the freelance wor...
Alexander Reznik

Available

App Developer
I am a seasoned Product Leader with over 15 years of experience driving digital innovation in healthcare and consumer wellness sectors. My expertise lies in transforming ...
Jessica Nguyen

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App Developer
App Design, Banner, Branding
App Design, Banner, Branding
A self-taught graphic designer.

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We have over 14,500 app developers who've worked in many different industries and cover various styles and skillsets.
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Trusted by companies around the world

"Working with her was an absolute pleasure. From the start, her professionalism and ability to grasp our vision for the real estate website, social strategy, and complex 3D animation made us confident in her abilities. She handled the entire project portfolio seamlessly. We were most impressed by her clear communication and..."
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John @ Curated Digital Studio
Nov 26, 2025
"Ayomide transformed our marketing system. He built automated workflows, optimized our funnels, and set up a seamless email sequence that boosted engagement and sales. What impressed me most was his ability to simplify complex processes and deliver everything on time. I highly recommend him to anyone who needs real marketing..."
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joke @ stockho
Nov 25, 2025
"Awesome Engineer and love to work with him more and more. Excellent his leading skillset is also attractive."
Sven @ Sky Talent Management
Nov 25, 2025
"Amazing work! Yash delivered high quality work , well organised code structure. Timely delivered worked. I would definitely hire them again"
Dikshit @ Self
Nov 21, 2025
"Working with Bharath Vishnu was an absolute pleasure. He was incredibly responsive, understood our needs perfectly, and delivered exactly what we were looking for. He communicated clearly throughout the project, making the entire process straightforward and positive. Apart from this, he transformed and delivered my vision..."
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Sanwar @ Crocklytech
Nov 20, 2025
"Clarence is a great artist! There was some miscommunication from my end but she was always accommodative and helped me out a lot. I recommend her for any of your music needs."
Vaibhavi @ Self
Nov 17, 2025
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"I found an amazing designer and she's fast. I now send her my ideas and she transforms them into great design. The collaboration is fast, professional and easy. It feels like she is already part of our team."
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5 star reviews

Clients Rate Twine App Developers

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From the blog

Frequently Asked Questions

What does an App Developer do?

An App Developer is responsible for designing, coding, and maintaining software applications for mobile devices or desktop platforms. They work closely with clients to understand their requirements, create user-friendly interfaces, and ensure optimal functionality. App Developers may specialize in specific platforms, such as iOS or Android, and often collaborate with designers, testers, and project managers to deliver high-quality applications. Their technical skills include programming languages like Swift, Java, or Python, and familiarity with development tools and frameworks is essential for successful project execution.

How to Hire an App Developer in Philadelphia, US?

Hiring an App Developer in Philadelphia can be streamlined by following these steps: Begin by defining your project requirements, including desired features, timelines, and budget. Utilize platforms like Twine to post your job description, which will attract talent specifically looking for opportunities. Engage with potential candidates and review their portfolios to assess their skills and previous work. Conduct interviews to evaluate their technical expertise and cultural fit. Finally, ensure clear communication regarding expectations and deliverables to set the stage for a successful collaboration.

How much does it cost to hire an App Developer in Philadelphia, US?

The cost to hire an App Developer in Philadelphia varies based on experience levels:

  • Beginner: $25 - $40 per hour
  • Junior: $40 - $70 per hour
  • Mid-level: $70 - $110 per hour
  • Senior: $110 - $150 per hour
  • Expert: $150 - $250+ per hour

Rates may fluctuate based on project complexity, developer expertise, and market demand, so it’s important to evaluate your specific needs when budgeting for your project.

What qualities set exceptional App Developers apart from the rest?

Exceptional App Developers possess a unique combination of technical expertise and soft skills that set them apart. Key qualities include:

  • Strong problem-solving abilities to navigate challenges effectively.
  • Excellent communication skills for collaborating with clients and team members.
  • A deep understanding of user experience (UX) and user interface (UI) design principles.
  • Adaptability to new technologies and a willingness to learn.
  • A track record of delivering high-quality, bug-free applications on time.

These attributes enable them to create successful applications that meet client expectations and user needs.

How do you recognize the perfect App Developer in Philadelphia, US for your needs?

To recognize the perfect App Developer for your needs, assess several factors. Start by examining their portfolio to evaluate the quality and relevance of their previous work. Look for specific experience in your industry or with similar projects. During interviews, ask about their development process, problem-solving techniques, and how they handle feedback. Communication is crucial; choose someone who clearly articulates ideas and demonstrates an understanding of your project goals. Additionally, consider their availability and responsiveness, as these traits can impact the project's success.

What are the key questions to ask in an App Developer interview?

When interviewing potential App Developers, consider asking the following key questions:

  • Can you describe your development process from start to finish?
  • What technologies and tools do you prefer for app development?
  • How do you ensure your applications are user-friendly and performant?
  • Can you provide examples of how you've overcome challenges in past projects?
  • How do you handle project deadlines and manage client expectations?

These questions will help you gauge their technical knowledge and project management skills, ensuring a successful partnership.

What’s the difference between hiring a freelance App Developer and working with an agency in Philadelphia, US?

Hiring a freelance App Developer offers flexibility, often at a lower cost, allowing for direct communication and personalized attention. Freelancers often have diverse skill sets and can adapt quickly to project changes. However, they may lack the resources of an agency, which typically has a team of developers, designers, and project managers. Agencies provide a comprehensive approach, ensuring quality control and a wider range of expertise, but may charge higher rates. Ultimately, your choice should depend on project scale, budget, and desired level of involvement.

What should be in an App Developer project brief / job description?

An effective job description for an App Developer should include:

  • A clear project overview outlining objectives and goals.
  • Specific technical requirements, such as programming languages and platforms.
  • Details on the expected deliverables and timelines.
  • Budget constraints and payment terms.
  • Information about your company and the project’s target audience.

This clarity will attract suitable candidates and facilitate a mutual understanding of expectations.

How do I hire an App Developer in Philadelphia, US on Twine?

Hiring on Twine is simple.

  1. Post a job with your project details, timeline, and budget.
  2. Browse portfolios of vetted App Developers and invite those who match your needs.
  3. Receive proposals and compare experience, pricing, and reviews.
  4. Communicate expectations, set milestones, and finalize the hire.
  5. Securely pay through Twine, ensuring protection for both parties. Twine connects you with top freelance App Developers, making it easy to find the perfect creative professional for your project.

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