Analysis and data model
We gather business rules, roles and flows and turn them into a documented data model and architecture.
Services
Custom software and SaaS platform development
Markish Tech builds custom web applications, management systems and SaaS platforms, from the database to the interface. We use Next.js and React on the frontend, NestJS, PostgreSQL and Redis on the backend, and multi-tenant architectures when each customer needs to operate independently. It's the same technical foundation we used to build our own products, Markish Arena and Markish Box.
Problems it solves
- Operations depend on spreadsheets, chats and manual work that doesn't scale.
- Generic tools don't fit your business rules.
- You have a digital product idea and need a first usable version.
- An existing system is hard to maintain or can't handle more users.
Who it's for
- Companies that need their own internal system or admin panel.
- Founders and startups who want to launch a SaaS product.
- Businesses with several locations, brands or customers that need separate data and permissions.
- Teams that need to integrate their system with other tools through APIs.
What's included
Backend and API
NestJS API with data validation, authentication, roles and permissions, job queues and scheduled tasks.
Web frontend
Interfaces built with Next.js and React, typed with TypeScript, accessible and adapted to desktop and mobile.
Multi-tenant and white label
When it applies, each organization operates with its own data, users and brand on the same platform.
Real time and internationalization
Live updates over WebSockets and translatable text in several languages when the product needs it.
Quality and operations
Automated tests, error monitoring and documentation so the system can be maintained.
How we implement it
Discovery
We understand the problem, who uses the system and which rules can't be broken.
First-version scope
We prioritize what is essential to go live and plan the rest.
Design and prototype
We validate screens and flows with a prototype before writing production code.
Iterative development
Partial deliveries you can test, with reviews and tests at every stage.
Launch and evolution
Release, monitoring and improvements based on real usage.
Technologies
When it makes sense
- Your processes have their own rules that a standard tool doesn't cover.
- You want to own the product, the code and the data.
- The system will grow in users, locations or features.
When it doesn't
- An existing tool already covers 90% of what you need; configuring it is usually cheaper.
- It isn't clear yet which problem the product solves; validate with something simpler first.
- There is no way to sustain maintenance after launch.
Related projects
B2B SaaS · Functional fitness
Markish Arena
Our own product
Case study of Markish Arena, Markish Tech's multi-tenant SaaS platform for running and scoring functional fitness competitions in real time.
B2B SaaS · Gym management
Markish Box
Our own product
Markish Box, a Markish Tech product in development, is a white-label web and mobile platform to manage functional training gyms and fitness brands.
Frequently asked questions
What is custom software development?
It means building a system designed around a specific business's rules, users and processes, instead of adapting the business to a generic tool. The result is a product you own: the code, the data and its evolution depend on you.
What does it mean for a platform to be multi-tenant?
One application serves several organizations (tenants) and each one only sees its own data, users and settings. It's the typical SaaS architecture. Markish Arena works this way: each gym runs its competition independently with its own branding.
Can the application connect to external APIs?
Yes. We integrate external services through their APIs or webhooks: email delivery, file storage, push notifications, Google sign-in and any other system that exposes an API.
How do you build a scalable platform?
By separating responsibilities from the start: an API with centralized business rules, a well-modeled database, queues for heavy or deferred work, caching where needed and monitoring to catch problems before users do. Scaling isn't just adding servers: it's code and data that let you grow without rewriting everything.
Want to know if this service fits your case?
Tell us what you need and we'll reply with an initial proposal and next steps.