Custom Systems
When do your processes require a custom system?
Manually moving data between systems, no shared view of the process, and decisions made on outdated information. A custom system brings order to these areas and gives the team a single, coherent working environment.
- Process analysis and solution architecture design
- CRM, B2B, and workflow systems tailored to how your teams actually work
- Integration with existing systems (APIs, databases, external tools)
- Dashboards and reports that support operational decisions
- Roles, permissions, and data security
- Scalable architecture that grows with your organisation
- Technical documentation and knowledge transfer to the client's team
- Maintenance and development after deployment
Custom systems are software designed from the ground up around the processes, data, and business logic of a specific organisation. Hexacode builds such systems for B2B companies — from process analysis through architecture and iterative delivery to maintenance and development by a permanent senior team.
When is a custom system worth building?
A custom system makes sense when your process is too specific for an off-the-shelf tool — and too important to keep running on spreadsheets. It’s software designed from scratch around the way a single organisation works, with its exceptions, integrations, and business logic that no SaaS will cover without forcing compromises.
A typical signal? Data being copied manually between systems, three departments working from different sources of information, and decision-makers waiting for a report instead of seeing the current state of operations. If this sounds familiar — you’ve probably already tried an off-the-shelf tool.
Another scenario is scale: the company is growing, and the existing toolkit (spreadsheets, email, three separate SaaS products) is starting to generate more operational costs than implementing a tailored system. A custom system consolidates data in one place, eliminates manual data transfer, and gives decision-makers a real-time view of operations without waiting for a report.
How does building a system at Hexacode work?
We start with an analytical workshop — 1–2 weeks of joint work with experts from your company. We map the process, identify priorities, and define success metrics. At the end, you get a recommendation with pricing and a phased implementation plan. Only then do you decide whether to proceed.
Delivery is iterative — every 2 weeks we deliver a working increment that your team can test and provide feedback on. You don’t wait for the end of the project. You see progress regularly, have a live project view, and a weekly standup with the same lead engineer who has been running your project from day one.
Technology stack — and why we chose it
We choose technology based on project requirements, not trends. For most custom systems we work with Vue.js on the frontend, Node.js on the backend, and PostgreSQL as the database. This stack combines three qualities important in a B2B context: maturity (each tool has a long production history and an active community), flexibility (it allows for rapid iteration without architectural rework), and market availability of specialists — meaning the client is not exclusively dependent on us.
Where scale or the specific nature of the problem demands it, we add further elements: Redis for caching, Elasticsearch for full-text search, task queues for asynchronous processing. We design the architecture so that individual modules can be developed independently — without the risk that a change in one process breaks another.
Communication and budget transparency
During the build, we don’t disappear for a month and then present a finished product. Our collaboration model rests on three pillars. The first is a weekly standup — a weekly meeting with the lead engineer to discuss progress, next week’s priorities, and any blockers. The second is a live project view: the client has constant access to the task board and code repository, so they can see at any moment what we’re working on and what stage each module is at.
The third pillar is a transparent budget. We bill for hours actually worked, broken down by specific tasks. The client doesn’t receive a bulk invoice for “development work” — they see how long the ERP integration took, how long the dashboard refinement took, how long a new requirement analysis took. This enables informed decisions about priorities and scope for upcoming iterations.
Integration with the existing environment
One of the main reasons companies choose a custom system is the need to connect data from multiple sources. We integrate ERP systems, CRMs, databases, payment platforms, communication tools, and external APIs into one coherent ecosystem. We design integrations so data flows automatically and in real time — no manual CSV exports, no copying between tabs.
During analysis we audit the client’s existing technology stack and plan the integration architecture accounting for both current tools and those that may be adopted in the future. If the process requires automation of repetitive tasks, we combine system building with workflow and automated rules implementation within the same project.
What happens after deployment?
The same team that built the system takes over its maintenance — monitoring, updates, incident response, and ongoing development. Zero team changes, zero lost context. The system is meant to reliably support the business for years, not just pass acceptance testing.
When doesn’t a custom system make sense?
We prefer to be upfront rather than take on a project where we won’t deliver value. A custom system is an investment — if an off-the-shelf tool (Notion, Monday, Salesforce, or even a well-configured spreadsheet) covers your process without critical compromises, that’s the better option. A custom system makes sense when the process is specific, data must flow between many systems, and scale is growing faster than off-the-shelf tools can handle.
We also don’t build systems without shared thinking about the process. If you’re looking purely for backlog execution without analysis, integrations, and long-term ownership — that’s not our model of collaboration.
Security and user roles
A custom system gives you full control over who sees which data and what they can do with it. We design a permissions model tailored to the organisation’s structure — from global roles (administrator, manager, operator) to granular permissions at the level of an individual module, record, or action. Employees see exactly what they need for their work, without access to data that’s irrelevant to them. This is critical in companies where financial, personnel, and operational data flows through one system, and compliance requirements (GDPR, sector regulations) mandate clear access boundaries.
Case studies
For a company in the automotive sector, we modernised the IT system, achieving 90% faster loading and a 50% reduction in infrastructure costs. For an HR company, we built a platform that reduced event handling from 8 hours to 5 minutes. The HistoriaSzkod.pl platform with a public API handling thousands of requests daily. We describe every project with concrete results — see case studies.
This solution is for you if...
- The process already matters to the business, but today it runs on spreadsheets, emails, multiple tools, and manual copy-pasting of data.
- Several departments work from different sources of information, leading to slow, inconsistent, or hard-to-audit decisions.
- You need a solution tailored to how your organisation works, with a partner who takes responsibility for both maintenance and ongoing development.
What does building a custom system look like?
Business process analysis and priority identification
Architecture design and phased implementation plan
Iterative delivery with regular feedback from the client's team
Maintenance, monitoring, and ongoing development after launch
What results do companies achieve after deployment?
- One environment instead of multiple tools — data consistent, current, and accessible to every department
- Processes that today take hours of manual work, completed in a few clicks
- Decision-makers see the current state of operations without waiting for a report from the team
Want to talk about what this looks like in practice?
Book a callFrequently asked questions about custom systems
When does a custom system make sense instead of an off-the-shelf tool?
A custom system makes sense when your process is specific to your organisation and no off-the-shelf tool covers it without forcing compromises. Typical signals: data being copied manually between several systems, three departments working from different sources of information, and decision-makers waiting for a report instead of seeing the current state of operations in real time. If an existing solution (Notion, Monday, Salesforce, or a well-configured spreadsheet) covers your process without critical compromises — we'll say so directly. A custom system is an investment that pays off when data must flow between many systems, business logic is unique, and scale is growing faster than off-the-shelf tools can handle.
What does collaboration look like during the analysis phase?
We start with an analytical workshop lasting 1–2 weeks, run jointly with experts from your company. During the workshop we map business processes, identify priorities, speak with end users, and define success metrics. We also audit existing systems and data sources to plan integrations. At the end, you receive a document with an architectural recommendation, pricing, and a phased implementation plan — only then do you decide whether to proceed. The analysis doesn't commit you to further collaboration. If during the workshop it turns out that an off-the-shelf tool would solve the problem better — we'll say so directly.
How long does it take to build a custom system?
A typical first stage (MVP with core functions) is live in 2–3 months. Delivery is iterative — every 2 weeks we deliver a working increment that your team can test and provide feedback on. You don't wait for the end of the project to see results. The phased approach means modules can be in use before the full system is complete. Full scope and timeline are agreed after analysis, as they depend on process complexity, number of integrations, and data requirements. For example — an event management platform for an HR company was ready to use 10 weeks after kick-off.
What happens after deployment — who maintains the system?
We do. The same senior team that designed and built the system takes responsibility for its maintenance and ongoing development. We provide 24/7 monitoring, security updates, incident response within agreed SLA times, and regular technical reviews. Zero team changes, zero lost context. The system is meant to reliably support the business for years, not just pass acceptance testing. You see the current state of the system in reports, have a single point of contact for questions and escalations. The notice period is 30 days — we don't lock you into long-term contracts, because we want quality collaboration, not obligation.
Can the system be integrated with the tools we already use?
Yes — integrations with existing systems are one of the main reasons companies choose a custom solution. We connect ERP systems, CRMs, databases, external APIs, communication tools, and payment platforms into one coherent ecosystem. We design integrations so that data flows automatically and in real time, eliminating manual transfer of information between systems. During analysis we audit the existing technology stack and plan the integration architecture — accounting for both current tools and those you may adopt in the future.
Have a question that's not listed here? Write to us — we'll give you a straight answer.
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