Gloster Digital Group

Custom software development

The software on which the business is built cannot be compromised.

Custom software development for business-critical systems. When existing systems are already slowing down growth, or when a new digital product needs to be brought to market securely, you need more than just developers. You need a partner who takes responsibility for the entire system lifecycle—from architecture to operations.

Gloster's team of senior experts designs, develops, and operates complex enterprise systems in a way that ensures they remain scalable, secure, and capable of further development over the long term.

I would like to schedule an online consultation

When Should You Consider Custom Software Development?

Custom development isn’t the right solution for every company. It’s worth considering when technology no longer supports—but instead limits—business operations. Not every process requires a custom system. But when off-the-shelf solutions begin to limit operations, the cost of compromise can quickly exceed that of a targeted development project.

The standard system already limits operation

Processes need to be adapted to the software; teams are resorting to manual workarounds, and custom business logic remains in Excel and in people's heads.

The standard system already limits operation

Processes need to be adapted to the software; teams are resorting to manual workarounds, and custom business logic remains in Excel and in people's heads.

A critical project has stalled or has become dependent on a supplier

There is no clear accountability, documentation is incomplete, the roadmap is constantly falling behind schedule, and every change depends on a single team or key person.

We need to launch a new digital product without putting the enterprise at risk

The idea is commercially viable, but entering the market requires a scalable architecture, security controls, and a predictable implementation—even from the very first version.

A well-structured system
provides room for business growth

We plan all aspects—including technology decisions aligned with business objectives, development, integrations, the cloud environment, and production operations—as a single, cohesive process, so responsibility isn’t fragmented among multiple vendors who point fingers at each other. We first break down the business objective into specific development phases. At each milestone, we demonstrate tangible results, clarify the next decision, and make the risks transparent.

Business and Product Design

We identify the processes, user needs, business rules, and success criteria. Rather than simply going through a list of features, we work together to clarify what operational results need to be achieved.

System Development and UX

We design the system architecture, integrations, data model, security, and scalability. We address user experience and long-term sustainability together.

Custom Development and System Integration

Development of web, mobile, and business applications, APIs, internal platforms, and digital products. Integration with the existing corporate environment; not a standalone new system.

Cloud, DevOps, and Production Operations

Cloud architecture, CI/CD, monitoring, automated deployment, SLA-based support, and planned further development. Go-live is not the end; it is the beginning of the operational lifecycle.

AI in Development

We can also use AI tools to accelerate the process, testing, analysis, and documentation, in line with our clients’ needs. Senior engineers continue to make decisions regarding the architecture and the production system, and they review and test all results before deployment.

A development partner isn't just measured by the quality of their code

A senior architect leads system-level decision-making

The project is led by a designated technical lead who oversees the architecture, dependencies, quality, and long-term maintainability.

A single partner retains full responsibility for the technology

Design, development, cloud, DevOps, and operations are not separate contracts or a chain of vendors passing the buck to one another. These competencies are available within the group.

Transparent project management, not ad hoc development

We document decisions, regularly present progress reports, and identify risks in a timely manner. Managers have a clear view of where the project stands and what decisions they need to make.

A transferable system, deliberate vendor independence

We build on open standards, documented architecture, and handover terms clearly defined in the contract. Our goal is not technical lock-in, but long-term value for our partners.

Security and operability are already part of the design process

We incorporate access control, data protection, logging, activation, monitoring, and recovery right from the system design phase.

International experience backed by a stable corporate foundation

We work with international clients in European time zones, using Hungarian, English, and German as our working languages. Stock market transparency and a stable corporate background also reduce counterparty risk.

I would like to schedule an online consultation

At every stage, you can see where we are and what's next at

Professional Situation Assessment and Initial Framework

We work with a senior expert to clarify the business objective, the system environment, the main risks, and whether Gloster is the right partner for the task.

Survey, Architecture, and Investment Plan

We analyze the processes and dependencies, design the target architecture, and then define the development phases, the estimated cost range, and the management decision points.

Iterative Development and Integration

Short delivery cycles, regular demos, automated testing, and continuous business feedback. The result is a working product, not a project that remains invisible for months.

Controlled go-live and stabilization

Planned migration, security and performance testing, a go-live plan, monitoring, a support process, and clear lines of responsibility surrounding the launch.

Operation and Planned Further Development

SLA-based support, performance and error monitoring, projected expenses, and ongoing development aligned with business priorities.

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We step in when a project requires genuine accountability and senior-level expertise

New system or digital product

From assessment and system design through development to live operation, we guide the project through every stage as your partner.

Taking Over a Stalled Project

Code base and architecture audit, recoverability assessment, handover plan, stabilization, and a new, transparent project operation.

Expanding the Internal Development Team

Dedicated module, architect or DevOps support, specialized expertise, shared backlog, and knowledge transfer.

Further Development of the Existing System

New features, integrations, performance improvements, and technological upgrades—all while keeping the business running.

From your very first professional consultation, you'll be working with our senior experts at

Péter Szilágyi

Senior Enterprise Architect

András Leskó

CTO

Zoltán Rak

Senior Enterprise Architect

Security is not a post-hoc checkpoint at

For business-critical systems, security, data management, and auditability are integral parts of the design process. We tailor specific controls to the system’s risk profile, industry environment, and the organization’s regulatory obligations.

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Security-by-design architecture and authorization model

Auditable development, testing, and deployment processes

NDA and contractually established frameworks for data processing, access, and transfer

EU Data Processing and Cloud Hosting Options Based on Business Requirements

Taking NIS2 Requirements and Industry Compliance Considerations into Account in the Design Process

Managing Dependencies, Vulnerabilities, and Expenditures Throughout the Entire Life Cycle

To make the next decision, we first need a clear technical and business picture

A 30-minute professional assessment with a senior architect. We’ll review your current situation, the most significant risks, and the most realistic next steps. You won’t receive a generic sales pitch—instead, you’ll get professional feedback on how to move forward.

A 30-minute conversation with a senior architect

Professional feedback, not a sales presentation

We will get back to you within 2 business days at the latest

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Things to Clarify Before Starting a Custom Development Project

How much does it cost to develop custom software?

The cost is determined by the system’s complexity, integrations, security requirements, migration, and the method of collaboration. After the initial technical consultation, we can determine what kind of assessment is needed. By the end of the assessment, you’ll receive a cost range, timeline, project scope, and risk analysis that will help you make an informed decision—all before committing to the full development process.

How quickly can the collaboration get started?

We can typically organize the first professional consultation within a short time frame. How quickly we can get started depends on the required expertise, access, and the scope of the assessment. Even in the initial phase, we aim for concrete decision-making outcomes, not months of preparation.

We have our own development team. Can you work with them?

Yes. We can provide support at the architecture and technical leadership levels, take over a standalone module, provide specialized cloud, DevOps, or development expertise, or work as part of a joint team. Right from the start, we establish who is responsible for what, how we manage the code, and how we transfer knowledge.

Can you take over a project that's been left unfinished or inherited from another vendor?

Yes. As a first step, we assess the technology and the project’s operations: we examine the codebase, the architecture, the documentation, the dependencies, and the deployment process. We then provide a fact-based plan for stabilization, handover, and further development.

Who will own the source code and the intellectual property?

The terms and conditions for the transfer of project-specific source code, documentation, and usage rights are clearly specified in the contract. Licenses for third-party and open-source components are handled separately. The goal is to ensure that the system can be transferred in a manner that is transparent from both a legal and technological standpoint.

What technologies do you use?

We do not force a technology onto a problem from a pre-selected stack. We make the decision based on business requirements, the existing environment, team expertise, scalability, security, and total cost of ownership, with a documented rationale.

How do you use AI in development?

To accelerate coding, testing, documentation, and analysis workflows in a controlled environment. AI-generated results are not automatically deployed to the production system: they require review, testing, and validation by senior engineers.

Do you also handle operations and further development?

Yes. We prepare the system for monitoring, automated deployments, incident management, and SLA-based support right from the architecture design phase. Operations and further development can be managed under the same system-level responsibility.