C++ development projects span various industries, including smart manufacturing, fintech, healthcare, and video game development. From system software to games and hardware programming, all these and other performance-critical applications that need to run fast and efficiently would feature C++ among its languages.
In similar scenarios, businesses usually look for C++ development companies to either expand their teams with developers skilled in this programming language or hire the development team for a specific project. In both cases, they're guided by the same question: How do you choose the best experts?
This article discusses why you need C++ expertise and what you should consider while choosing among the top C++ development companies. Before that, let's dive into what it's used for.
What may you need C++ for?
JetBrains' State of Developer Ecosystem Report 2024 shows that 25% of respondents used C++ to write code for various functionalities. The top five cases include building application logic and workflows (63%), API integration (55%), API service providing (50%), libraries and frameworks (36%), user interface (32%), and more.
Moreover, the report features it among the top 10 most used languages globally, with plenty of vendors offering it among their tech stack. And while proficiency and expertise in developing software using language is a core focus when choosing a reliable tech partner, that's not the only thing to consider.
Key things to keep in mind when choosing the best C++ engineering companies
The best way to filter C++ development companies would be using the project requirements as your guiding light. For example, if you're a global enterprise looking for experts for C++ projects in the manufacturing industry, then you should shortlist leading C++ development vendors with similar expertise and domain knowledge. It will improve your chances of setting up a smooth development process and onboarding the team faster.
Alongside project similarity, here are a few other factors to consider.
- Experience in building large-scale systems using C++. The more cases they have in their portfolio, the more knowledge they have on organizing the development process to avoid costly mistakes.
- Performance optimization capabilities. The vendor should be skilled in low-latency programming, memory management, real-time processing, and other tasks that help optimize the app's performance.
- Integration with other technologies. C++ projects often require interoperability with cloud services, embedded systems, AI frameworks, and more. Make sure the C++ development companies on your list have this expertise, as it will ensure smooth app integration.
- Compliance with industry standards. A chosen vendor should comply with a standard for C++ development (ISO/IEC 14882:2024(E). In addition, it should be compliant with international standards like SOC 2, ISO 9001:2008, ISO 27001, ISO/IEC 27701:2019, and GDPR to ensure data security and safety.
- Multiple cooperation models. The best C++ engineering firms usually offer different engagement models, so when the project requirements change, you can scale the team up or down without spending time and budget on finding a new tech partner.
- Convenient locations of the delivery centers. If you plan development offshoring or nearshoring, make sure to shortlist the vendors with offices and delivery centers in the target countries.
Since every business and project is unique, you should also consider specific factors of your organization and workflows. This way, you set your project up for a long-term tech partnership and smooth development and business processes.
Selection criteria
As of March 2025, Clutch lists over 2,040 C++ development companies. Here's what we looked for to pick the best 15 ones.
- 10+ years of experience in software development;
- 250+ tech experts on board;
- At least 10 verified client reviews of Clutch;
- 4.5 or higher review rating on Clutch.
Here are 15 top-rated C++ engineering firms that made it to our list.
Best C++ engineering companies for your project
1. N-iX
N-iX is one of the top C++ development firms with development centers in Poland, Romania, Bulgaria, Spain, Portugal, Ukraine, Colombia, Azerbaijan, and India. With over 22 years of experience in software development, it has grown into an international software development company with more than 2,200 software engineers on board.
The firm's C++ development offering includes upgrading existing applications, native and cross-platform C++ app development, QA and testing, C++ app support and maintenance, and application improvement and optimization. Its portfolio features solutions for healthcare device manufacturers, electronic manufacturers, smart cities, telecom businesses, and more.
N-iX provides quality software development services for businesses in finance, manufacturing, logistics and supply chain, retail, telecom, automotive, healthcare, energy and utilities, and agritech industries. The vendor has strong tech expertise in creating cloud, data analytics, enterprise platforms and RPA, AI, ML, MLOps, cybersecurity, IoT solutions, computer vision, AR, VR, and other solutions.
Moreover, industry stakeholders often recognize N-iX for its performance quality. For example, in 2024, the International Association of Outsourcing Professionals (IAOP) mentioned it as one of the top outsourcing providers. CRN featured it in the 2024 Solution Provider 500 list the same year.
2. Scalo
With four development centers and over 600 developers, this is one of the C++ development companies operating in the USA, Israel, and Europe. It provides end-to-end software development services, covering a broad spectrum of technical expertise, including C++. It helps clients with app development for fintech, healthcare, renewables, aviation, ecommerce, and other industries.
3. Talentica Software
Located in India and the USA, this vendor works with startups and medium-sized companies. It uses C++ predominantly for IoT and connected device development. The firm helps its clients with AI, blockchain, wearables, AR, Big Data, and other projects.
4. A3Logics
This is one of the C++ development vendors with over 350 tech specialists. It uses C++ to develop end-to-end applications for businesses in automotive, education, manufacturing, real estate, retail, and other industries. The vendor holds various certifications, including ISO 27001, CSM, and others. It partners with Salesforce and AWS.
5. Qubiz
The firm helps businesses develop enterprise app software, build mobile and web applications, consult on tech integration and adoption, and more. The vendor uses C++ to develop solutions and provide services for businesses in healthcare, logistics, finance, technology, and other industries. Its team features over 370 tech experts.
6. Abto Software
It is one of the C++ development firms featuring over 280 software developers. It offers various software and product development services. In addition, it develops RPA, computer vision, ML, and AI solutions. The vendor serves US and EU businesses in healthcare, retail, real estate, government, telecom, and other industries.
7. Solwit SA
Located in Poland, the vendor has helped EU businesses with various tech tasks for 10 years. The firm uses C++ and other technologies to provide custom software development, safety-critical and embedded systems development, and IoT software development services. It has tech partnerships with GCP, Microsoft Azure, AWS, and Microchip.
8. Wizeline
This is one of the C++ engineering vendors operating globally. It works with media, entertainment, finance, healthcare, and retail clients. Its core services include product engineering, cloud engineering, data engineering, and AI enablement. It has offices across the Americas, Europe, and Asia. The vendor holds certifications for ISO 27001, SOC 1/ SOC 2, and PCI DSS.
9. Knowit
With over 1,900 developers on board, the firm has offices across Denmark, Norway, Finland, Sweden, Poland, and Germany. It helps businesses with system and software development, product development and engineering, cloud, AI, and more. It uses C++ to develop embedded and IoT applications.
10. Softengi
It's one of the global C++ development vendors focusing on custom software development, marketplace development, IoT, VR, and AI solution development. The firm serves utility, logistics, oil and gas, real estate, agriculture, and retail domains. It mostly uses this programming language for IoT and embedded software development services. It has offices in Poland, Ukraine, Italy, the UAE, and the USA.
11. Gadgeon Systems Inc.
The firm has offices in the USA, India, Belgium, and the UAE. It helps businesses with product engineering, application engineering, IoT and digital transformation, and building AI, computer vision, and VR solutions. Its developers use C++ for hardware and firmware engineering, embedded apps, and IoT solutions.
12. Edvantis
With offices in Germany, Poland, and Ukraine, the firm assists businesses worldwide with custom software engineering, data science, cloud, AI, and IT operation projects. It builds end-to-end IoT solutions using C++ and other related stack. In addition, it's one of the core programming languages used in their software engineering services.
13. QBurst
As one of the international development vendors, it has offices in the USA, Canada, Germany, Sweden, the UK, and other countries. It leverages its C++ expertise to create custom software engineering solutions, IoT and Industrial IoT solutions, embedded systems solutions, and more. The firm has certifications in ISO/IEC 27001:2013 and ISO/IEC 27701:2019 to ensure information security and privacy management.
14. Capital Numbers
Another vendor on the list of top C++ firms with two development centers and over 500 software engineers. It helps various businesses with digital engineering, web development, QA, platform engineering, cloud, UI/UX, and other projects. The firm has established partnerships with Salesforce, Microsoft Azure, and Adobe Commerce. It holds ISO 9001, ISO 2700, and SOC 2 Type II certifications.
15. Apriorit
This firm uses C++ for app development, system modernization, reverse engineering, driver development, code audit and verification, and other tasks. It can build solutions such as device firmware, cybersecurity systems and applications, IoT software, and more. The firm also uses other languages, including Rust, Python, Golang, NodeJS, .NET, and Angular.
What makes N-iX stand out from the top-rated C++ engineering vendors?
- Vast talent pool of C++ engineers from 25 countries;
- Over 160 active clients from finance, manufacturing, logistics and supply chain, retail, telecom, automotive, healthcare, and other industries;
- IoT and Embedded R&D lab for streamlined PoC development and QA;
- Expertise in C++ software development for smart manufacturing, fintech, healthcare, and video game companies;
- Strong IoT and embedded development expertise with over 60 delivered projects;
- Engineers skilled in cloud computing, data science, AI, ML, computer vision, cybersecurity, and other tech domains to take your solution to the next level;
- Enterprise app modernization projects delivered to international businesses, helping clients secure further digital transformation;
- Flexible cooperation models to meet your business needs.
If you're looking for experienced C++ developers for projects of any complexity, contact N-iX. We'll help you strengthen your tech team skills and build reliable applications using C++, modern technologies, and industry knowledge.
References:
- Software Developers Statistics 2024 - State of Developer Ecosystem Report | JetBrains
