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Need to hire app developers and make a custom mobile app? Our skilled develoeprs will help you build fast, modern, and reliable apps that will amaze your users.

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Client testimonials

«We now have a core team of engineers at Relevant who work for us full-time and are supplemented by 4 or 5 engineers with different skillsets when and if required.»

Paul Carse
CTO and Co-founder of Life Moments

“Working with you guys has been fantastic. The level of expertise of your development team is as good as the people that we get in the UK. You’ve got a fantastic talent base of programmers. It’s more challenging to find people of that quality in the UK.”

Cassian Harrison
Co-founder of Splink Industries and My Theory Test App by James May
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How we hire app developers

1. Prescreening

The first step of our hiring process is the candidate's CV review. Then, an HR specialist invites the selected specialists to an online interview to tell them about the firm and the position. This interview also aims to assess the software developers' soft skills.

2. English level assessment

The second step of the hiring process is the English language evaluation. Our higly-trained in-house English teacher assesses both candidates' grammar knowledge and speaking skills, as we are looking for mobile app developers who can communicate well with clients.

3. Tech interview

These interviews are carried out by our senior developers, team leads, and project managers who are experts in their domain. They evaluate each mobile app programmer's tech knowledge and problem-solving skills through various theoretical as well as practical tasks.

4. Final interview with you

As a quality-first firm, our aim is to provide you with the most suited app development professionals. At the fourth stage, we will present you a list of several mobile app software engineers, so you can interview them and choose those you see fit for your project.

Tools and technologies we use
  • • Programming languages: Java, Kotlin, Objective-C, Swift
  • • Frameworks and kits: UIKit, SwiftUI, Coroutines, Flow, Android Jetpack Navigation, Dagger2, Flutter, React Native
  • • Monitoring and logging: Firebase, New Relic
  • • Development tools: Xcode, Android Studio, Android Developer Tools (ADT)
  • • CI/CD: Fastlane, Jenkins, MS Azure Pipelines, Github Actions

How do we differ?


92% of our team are very experienced developers

Our team consists of only middle and senior mobile app developers, as we want to serve our clients at the highest possible level and deliver the most relevant solutions.


9/10 client satisfaction score

We know what great service is and deliver it to our clients. Therefore, the majority of them choose to scale their solutions and implement new ambitious projects with us.


20% employee turnover rate

People are what truly matters. Since the company foundation, we've been fostering an employee-focused culture and are happy that most of our staff stay with us for years.


Smooth integration

Due to our developers' proper planning approach and extensive experience, they will sync up with your team fast and with no hassle.


Risk management

Our risk strategy will help your software engineering team focus on development instead of wasting time on solving unforseen problems.



Our app developers will quickly adjust to your business model, ensure the consistency of all the projects, and help you optimize the processes if needed.

App development cases

My Theory Test app by James May
Building #1 driving app in the UK
View case
Improving a restaurant booking system
View case
Automating the event check-in process
The Netherlands
View case
Facilitating the ordering of custom prostheses and orthotics
View case

Engagement models

Decide which model best suits your project


What are the responsibilities of an app developer?

The tasks that an app developer performs may vary greatly on the type of the project and the firm's size. Often, mobile app developers receive a concept which specifies the functions of the app from the client. In this case, one of the essential tasks of an app programmer will be to test this concept for its viability.

Below, you can find some of the typical mobile app developers' responsibilities.

  • Work with client's requirements
  • Collaboration with UI/UX designers, programmers, and other team members
  • Implementation of new apps and improvement of the existing ones
  • Ensuring coherence between the technical and the functional side
  • Application development
  • Ensuring the correct linking of backend and frontend
  • Solving the issues arising across the test cycles and
  • Development of the existing concepts
What I should think about before hiring a mobile app developer?

According to Harvard Business School, about 95% of newly-launched products fail. One of the main reasons behind these statistics is due to skipping the phases listed below and hiring a mobile app developer empty-handed.

Problem/Solution fit

First up, define your target audience (TA) and find its pains. Only then brainstorm the solution.

  • Determine and explore your audience. Begin with basics (age, gender, income, education, and occupation) and then proceed with details (personality, attitudes, values, lifestyle, struggles, etc.).
  • Validate the problem. Based on the findings, brainstorm what problems your target audience might face in your industry. Don’t stop on mere hypotheses – interview 5-7 potential customers to learn whether these problems are really crucial.
  • Validate the solution. Find the solution. Do a competitor audit and see how you can make your app stand out from them. After that, draft a rough prototype of your MVP to verify whether your solution meets your TA’s needs.

Product/Launch fit

At this stage, you should define the minimum set of features that can bring your first customers, and advertise them.

  • Define an MVP. Don’t get into details right off the bat — draft your MVP and outline its most valuable features.
  • Build a landing page. A landing page will help you gain your initial traction and get contact information to nurture your potential customers into actual clients.
  • Set KPIs. Set metrics to measure your product launch success. These may include the number of subscribers, leads, conversions, sales, etc.

Have clear requirements and a roadmap

The lack of a well-defined roadmap is another reason why most products fail — with 150 products under our belt, we know this from our own experience. Lay down your requirements to match your app’s purpose and its key functionality: an accurate description of your future app is key to your success. If you are worried that someone might steal your idea, ask your potential vendor to sign an NDA.

Though the discovery phase is time-consuming, it is a foundation for your success. To this end, Relevant Software offers business analysis to help you explore your audience, identify their struggles, find a viable solution, and outline a clear roadmap.

Where can I find a mobile app developer for hire?

Freelancers, remote employees, or IT outsourcing companies? It depends. Below, we’ll explain in what case each type of mobile app developers for hire might work best, and will give a list of websites where to look for them.


If you have a small project that doesn’t need an app development team, designers, and testers (like creating a WordPress website), finding a freelance developer will be enough.

Upwork and Freelancer are the most popular platforms for hiring mobile app developers. Both Upwork and Freelancer function as liaisons between freelancers and employers, processing all the payments and protecting both parties from possible fraud.

Codementor is a commercial IT tutoring platform, connecting engineering mentors and mentees. It’s a go-to website if you want to find experts in a particular field to help you acquire new skills. Codementor will also match you with independent contractors if you need to have a small project or assignment done.

Pros of choosing freelancers:

  • Hiring freelancers is often the most cost-efficient way to gain access to a worldwide base of knowledge and skills.
  • You don’t have to pay for workplace appliances, perks, and benefits, etc. — you only pay for the job itself.
  • There are fewer responsibilities as an employer; once the project is delivered, the work relationship is either ended or paused until you collaborate on some project in the future.

Cons of choosing freelance developers:

  • The managerial overhead of keeping track of multiple tasks done by separate contractors.
  • Potential data security issues created by providing complete outsiders with access to mission-critical systems.
  • Unless they are long-term partners deeply engaged in the company events and strategy, freelancers are less personally invested in the long-term success of your endeavor due to the temporary nature of their employment.

Remote employees

When it comes to medium- and long-term projects that require specific training, consider hiring a remote employee. An RE is more like an extension to your team, rather than an independent player.

Places to find remote employees:

Of course, you can hire a mobile app developer on your own, using LinkedIn, for example. But you’ll have to weed out candidates who are not currently looking for a job or those who seek office-based positions. Instead, consider platforms specializing in remote mobile app developers for hire, such as Remote.com, Hired, and YouTeam.

Remote.com is a go-to platform for finding full-time and part-time remote contractors from around the globe. On Remote, you can either search for candidates manually or rely on the AI algorithm that finds the best talent based on the project duration, skills, and the payment model.

On Hired, you can find both freelancers and full-time mobile app developers for hire. The platform is industry- and location-specific (some regions of the US, Canada, and France). With a 5% admission rate, Hired accepts only IT talents with degrees from leading universities and backgrounds in leading companies (Facebook, Apple, etc.). At Hired, you can also hire a mobile app developer from your city.

YouTeam connects individual mobile app developers for hire from agencies and clients. All agencies and their developers have to pass a thorough screening and will be banned if their skills differ from what they advertise. If you need a team of developers, YouTeam is an ideal option. The platform offers multiple teams working in the same office and used to collaboration.

Gun.io utilizes their own network of high-quality independent developers to tackle any software engagement — whether it requires a few hours of work from a senior engineer — or the combined year-long efforts of an entire engineering team. Gun.io only accepts fully vetted developers who have passed their technical assessments, and collected endorsements from previous colleagues to verify their skill and seniority. They present candidates based on your project specifications and set up interviews with candidates you like best. Book your freelancer for the monthly hours that you need, and swap talent as your roadmap requires.

Pros of choosing to work with remote teams:

  • You form productive and engaged teams ready for a long-term commitment.
  • The expertise gained during the project stays within the company.
  • Employees working remotely often cost less, as they don’t require office expenses and other benefits.

Cons of choosing to work with remote teams:

  • It involves all the pains and hurdles of hiring employees and forming teams out of them.
  • If they fall ill, go on vacation, or quit, corresponding parts of your project are halted.
  • It can be difficult to accurately review developers’ performance and productivity.
  • Outsourcing companies and agencies

If you have a complex project, consider an IT outsourcing company or an app development agency. This gives you the privilege of hiring mobile app developers with a unique experience of work on top projects. It also guarantees that the deadlines will be met, the quality will shoot off the charts, and the management headache won’t be yours.

For example, Relevant Software offers mobile app developers for hire, as well as UI/UX designers, business analysts, security specialists, project managers, and QA experts. Having provided 200+ effective solutions, we are proud to be listed as one of the top software development companies, according to Clutch and GoodFirms.

Pros of outstaffing/outsourcing:

  • Instant access to ready teams possessing the needed expertise.
  • Ready solutions to minimize time-to-value for your projects.
  • The technology vendor takes care of the team’s motivation, perks, benefits, and replacement if need be.

Cons of outstaffing/outsourcing:

  • You might experience management difficulties.
  • Cultural differences may set teams apart.
What are the criteria for the selection of the right mobile app developer for my project?

Mobile app development is so popular that pulling a real pro (or a team of pros) from a vast pool of candidates seems next to impossible. However, if you know exactly what you need to develop and you bear these 10 tips in your mind, you’ll easily hire a mobile app developer to bring your idea to life.

  1. App type. Is your app going to be an extension to your business, or do you see it as a startup company? Is it a simple or complex app? What category does it belong to (education, lifestyle, entertainment, or maybe you need to implement a loyalty app development project)? Be ready to answer these questions and hire a mobile app developer accordingly.
  2. Experience & skills. Depending on the app type, consider what tech stack to look for. Our articles on hiring Android, iOS, and Flutter developers will make things easier.
  3. Communication and the ability to work remotely. Communication is crucial, especially with offshore companies. Before going into details, try to contact your potential vendor via chat, email, or phone and schedule an introduction meeting.
  4. Budget. Discuss prices ahead of time. Apart from development, consider other expenses, like design, maintenance, testing, deployment, and other services. Never prioritize pricing over quality.
  5. Timeline. Discuss the timeline in advance and see if it is viable.
  6. Portfolio. Look at the portfolio of a mobile app developer for hire. Download their apps (check if there might be any similar to yours), see whether they function as advertised, if there are bugs, and if they do offer value to a customer.
  7. References. Hunt for references. Besides those listed on their website, contact their clients and consult evaluation sites, such as Clutch or GoodFirms.
  8. Look for developers that can guide you. There are always a few different ways to code one and the same app. If your mobile app developer for hire is able to suggest a better solution, take it into consideration.
  9. Look for long-term relationships. Development doesn’t stop after the release. Having processed the feedback, a vendor should fix any bugs they overlooked, add new features, and make your app easier-to-use according to the customers’ needs. Long-term relationships are a must.
  10. Compatibility. Make sure that language barriers, time zones, various communication tools, and different values aren’t obstacles to successful project completion.
Why should I consider hiring mobile app developers from Ukraine?

There are numerous reasons why Ukraine is the best destination for IT outsourcing. But we’ve shortlisted them to five most valuable ones.

  • Global recognition of IT expertise. Ukraine was ranked as the best IT offshoring destination by GSA UK in 2017, and more than a dozen Ukrainian companies are listed in IAOP Global Outsourcing top 100 ratings.
  • Huge tech community and events. There are at least ten large IT clusters in Ukrainian cities. They regularly hold meetups, conferences, and hackathons, helping aspiring software engineers gain valuable experience. Several pan-European and global IT events like Lviv IT Arena, The Games Gathering, the IForum, and the Agile Eastern European Conference take place in Ukraine.
  • Quality and numbers. There are more than 200,000 tech professionals in Ukraine as of 2020, and nearly 35% of them are senior-level developers and software architects with immense experience in enterprise-grade product development.
  • Global industry leaders outsource to Ukraine. More than 100 global enterprises, including Boeing, Samsung, Microsoft, Huawei, and Oracle, have their R&D centers in Ukraine.
  • Home to world-known startups. Do you check your spelling with Grammarly? Do you monitor your pet using Petcube? Do you use Looksery to recognize friends on social media photos? All Mac users have heard about MacPaw products like CleanMyMac, Gemini Photos, and Spark email client. All of them are Ukrainian.

Ukraine stands out as one of the most affordable offshoring destinations, yet the one providing consistent quality.

All in all, the cost of hiring remote developers across the globe varies greatly. Calculating your estimate when you’re planning your project can depend on subsistence wages, taxation systems, and other factors.

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