Custom software development

Build and release your solution with an expert-level custom software development team

As a custom software development company, we provide full-cycle customized software services for established enterprises

  • Smart, connected products

  • Device-to-cloud connectivity

  • Value-adding digital services

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Proekspert custom software services cover the technology stack from hardware engineering to user interfaces

We have extensive experience designing and developing software-enabled devices, equipment, products, and services for established global enterprises.

Proekspert provides custom software development services through four different technology layers: user interfaces; backend services; data infrastructure; hardware and firmware.

Proekspert core competencies

User interfaces

Mobile app design and development

User interaction design

Self-service interfaces and portal design and development

HMIs – human machine interfaces

Industrial application UI design and development

Backend services

Software product development

Enterprise software development

Software enhancement and modernization

Scalable cloud solutions

Cloud infrastructure and implementation

Web back-end development

Cloud governance and security

IoT platform development

Integration with enterprise systems

Integration with 3rd part APIs

Data model development

Predictive analytics

API product development

Data infrastructure

Implementation of BI tools and methodologies

Data cleansing and transformation

Data warehouse architecture and development

Data visualization and dashboards

Hardware and firmware


Secured firmware update

Data driven development

PC-tools development

User interfaces – UI design and frontend development

We design and develop user interfaces for enterprises, machines, industrial solutions, and cloud-based self-service portals. We also design UI/UX for mobile and web apps. We analyze current solutions, work environments, workflows, and user interactions to design the most efficient UIs and workflows for the work environment. We also conduct user experience research and analysis.

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Administrator interface design

Dashboard design

HMIs – human machine interfaces

Industrial application UI design and development

Kiosk interface design and development

Mobile app design and development

Operator aid solution design and development

PC-tools interface design and development

Physical user interface design

Prototype and test

Reactive web applications

Self-service interfaces and portal design and development

Technician interface design

UI and workflow optimization


UI solutions for operators

UI/UX design for user app

Usability testing

User experience research and analysis

User interaction design

User interface facelift and modernization

User workflow

Web front-end design

Whitelabelling / OEM

UI plugins for enterprise solutions

Backend services – cloud development, integration and advanced analytics

We develop custom software back-end solutions and API products. We do integrations with enterprise systems. We do software architecture. We design IT infrastructure. We set up and develop cloud solutions. We modernize legacy back-end systems and migrate them to the cloud. We develop machine learning models and pipelines. We develop automated image analysis recognition models.

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Advanced analytics and machine learning

Algorithm development

API product design and development

Applied research and development

Architecture design for an IoT solution

Automated data classification

Automated image analysis

Automated testing

Cloud governance and security

Cloud infrastructure and implementation

Cloud management

Cloud migration

Cloud modernization services

Cloud platform development

Cloud strategy

Cloud-native development

Computer vision / image recognition

Custom software development

Data science and AI development

Data sourcing and retrieval

Device management

Edge Cloud

Enterprise software development

Integration testing

Integration with 3rd party APIs

Integration with enterprise systems

IoT platform development

Microservices and transactions

Performance tuning and maintenance (data)

Predictive analytics

Scalable cloud solutions

Scalable data stream processing

Security testing

Software enhancement and modernization

Secure remote firmware update

Software product development

Software product development

Web back-end development

Data infrastructure – business intelligence and data engineering

We analyse data infrastructure and business requirements, implement data tools, and set up data architecture and integration. We do data migration from legacy systems. We synchronize complex enterprise systems like CRM/ERP systems. We prepare data for deeper analysis by data scientists.

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Advanced business analytics and reporting

Business requirements and goals definition

Data cleansing and transformation

Data conversions, upgrades, and migrations

Data governance and quality

Data infrastructure

Data literacy consulting

Data migration

Data modeling

Data sourcing and retrieval

Data storage and analytics

Data visualization and dashboards

Data warehouse architecture and development

Descriptive analytics

High availability, backup, and disaster recovery

IoT data strategy and data analytics

Knowledge discovery in databases

Rapid validation and feasibility assessment

Hardware and firmware – embedded engineering

We design and develop embedded systems. We do full-stack development, from device drivers to embedded Linux applications, from real-time systems to IoT cloud integration. From concept to prototype to turnkey solution, we cover all the development stages, including testing and integration. We provide embedded software development that facilitates complete customization and optimization of system software.

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3rd party libraries / Middleware

Certification testing


Control panel displays

Data driven development



Edge IoT Gateways 

Embedded AI

Embedded software design and development

Embedded storage optimization


Hardware component optimization

Hardware design

Hardware protocol emulation


Industrial and automation communication protocols

Integration with enterprise and 3rd party systems and APIs

IoT devices

IoT platform development

Legacy modernization

Multi-language/region systems

PC-tools development

Pre-production testing

Product architecture

Product design

RTOS / Embedded OS

Secured firmware update


Test automation for embedded systems

White labelling / OEM

Controllers / PLCs

Embedded software platform development

From engineer to engineer: How we work with agile software development

We use the scrum agile model, a key methodology in agile software development, for custom software development. We believe this efficient way of working uses time and money and maximizes business value. Agile software development is particularly effective for projects that require constant collaboration and iterative improvement, making it suitable for a wide range of projects, from advisory activities to the evolution of existing software. Most importantly, we closely cooperate with the final customer to ensure that whatever we make will be used to its full potential.

Incorporating project management practices within our agile development framework is crucial for effective communication, aligning project goals and deadlines, and maintaining the project flow. This ensures a well-thought-out solution design and optimizes project costs through best practices.

Delivery schedules

Deliverables are either short-term or final projects, which are agreed upon beforehand with the client’s product owner. Short-term deliverables are presented to the client after every two-week development cycle.

These are the types of things discussed:

  • solution architecture
  • solution design (e.g., user interface, UX, service design, etc.)
  • software development
  • software testing (e.g., unit testing, integration testing, regression testing, automation testing, information security testing, and user acceptance testing)
  • management of code repositories or libraries to maintain the integrity of artifacts
  • package creation for the effective and efficient deployment of the application
  • version control, sharing, and ongoing management of smaller blocks of code

Meetings, meetings, meetings

Too many meetings can waste everyone’s time, but the following five meeting types are critical to agile development:

1. Sprint planning

Spring planning is a gathering of the entire team, including the product owner and scrum master, where the participants define what’s to be done in order of priority.

2. Daily stand-ups

As its name conveys, it’s a daily meeting where people often stand as an incentive to keep things short! (It should last no longer than 15 minutes.) In this meeting, we review the progress made the previous day, plans for the current day, and any problems. The daily stand-up makes sure everybody’s on the same page.

3. Sprint review (a.k.a. “the demo”)

This meeting demonstrates the product’s functionality and what was achieved during the sprint. The team, product owner, scrum master, and other stakeholders are present.

4. Sprint retrospective (a.k.a. “the retro”)

During this meeting, the team reviews what went right and wrong to identify potential improvements.

5. Backlog grooming

After a technical discussion, backlog items are categorized and prioritized. This meeting aims to reduce the need for long sprint planning meetings and allow the team to reflect on backlog items before fully committing to sprint goals.


When requested by the client, we create automated tests for projects’ critical functions and whole projects. Automated testing ensures that every new feature works as expected and that refactoring or new features do not cause regressions in already implemented functionality.

We write both unit tests for individual code-level components and integration tests.


Deployment and release management are handled via a configuration management process and the sprint-based development cycle. We follow the agile/DevOps approach by doing smaller deployments, allowing mid-course corrections due to changing plans or requirements.

When we’re ready to go live for milestones like the MVP- or second phases, relevant stakeholders gather for a go/no-go meeting. We present the go-live checklist, including test results, and the go/no-go decision is made. We also host milestone retrospectives to improve future performance.


During the implementation phase, support and training are provided to the end users. In this stage, we sometimes observe bugs and other issues that went undetected in previous phases. Sometimes, change management is needed for the client’s employees since an organization’s processes, workflows, and/or strategies change.

Operations and maintenance

This means any modification, change, or update of a software product after delivery. It’s done to correct faults, improve performance, or meet customer needs. We’ve performed this function for over 30 years for some clients.

These are typical operations and maintenance services:

  • system monitoring
  • first-line incident response, 3rd and 2nd level support
  • issue tracking, prioritization, and solutions
  • software enhancements

How we work

Clarify business needs

Working together, we assess the situation and processes. You get realistic expectations of what can be done. The project is begun only if real business value can be created.

Technology evaluation

We evaluate your current stack based on your requirements and provide an unbiased recommendation for an optimal toolset. This enables more confidence in future tech investments.

Implementation strategy

We define clear roles and responsibilities and a roadmap for sustainable implementation. This enables faster time to value, quick adaptation to business changes, and increased data literacy in your organization.

Incremental value delivery

We use rapid prototyping. With fast time to value in mind, we incrementally build a technology ecosystem that can support rapidly changing business and customer needs.

Custom software development FAQs

Custom software development FAQs

Custom programming involves developing, building and maintaining specialized software applications tailored primarily to suit businesses’ requirements.

Who needs custom software development?

Large companies typically have complex processes and specialized needs that can no longer be met with commercial software. Custom software solutions help companies automate operations, simplify workflows, and enhance efficiency. 2022.

What is the average cost of custom software development?

Typically, small apps generally run €50,000 to €200K, while medium-size apps typically range the range of €200,000 to €400,000.

What is custom development software?

Customisation involves building and modifying existing software to suit customers’ needs, providing customized functionality, scalability, and integration capabilities. Compared with traditional business strategies, this method provides competitive advantages but is costlier and takes longer to produce.

What is the difference between bespoke and custom software?

Usually called custom software or tailor-made software, customized software is software developed by an individual client. Unlike custom suits, these software applications have been created to meet your specific requirements. 5 days ago.

What is a custom development application?

Tell me about the process of creating custom applications. Custom software development relates to the design and development of software for specific user needs. Many employers also provide HR portals to staff and freelancers.

What does a custom software developer do?

Specifically, this involves developing solutions that meet the organizational needs of the customer. This can help improve customer service, increase productivity, improve information management and improve business processes.

What is custom business software?

Custom software is software designed for the needs of a certain organization or user.

We have decades of experience.
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