Custom software development

OUR MAIN SERVICES

GET THE HIGH-QUALITY SERVICE AND SCALE

custom software development

Web development

Full-cycle web development — from architecture and frontend to testing and post-launch support.
custom software development

Mobile development

Secure, scalable iOS and Android apps, built and QA-tested for real-world load, not just demo scenarios.
custom software development

UI/UX design

User-centric design that's handed to engineers already clear — so development starts without back-and-forth clarifications.
custom software development

Quality assurance

Our approach to engineering helps minimize errors during the development process. Only 5% of "to QA" tasks are returned to developers to improve. It's our own metric.
custom software development

Research & Development

Get a working proof of concept from our R&D team, testing the riskiest technical assumptions before full-scale development begins.
Custom software development

AI/ML SOLUTIOns

Computer vision, NLP, and predictive analytics built into your product — from object detection to demand forecasting.
Custom software development

TECH TROUBLESHOOTING

Inherited a buggy app or a stalled project from another team? We find the root cause and fix it — architecture, performance, or code quality.
custom software development

DEVELOPMENT SUPPORT

Ongoing feature development, bug fixes, and team extension for products already in production.
Custom Software Development
new services

new ways we help you ship with confidence

Mobile App Audit

Fixed-price audit for published iOS and Android apps.
Find out why ratings, revenue, or releases aren't moving — get a prioritized recovery plan in up to 10 days.

Learn more →
BOLT
LOVABLE
Replit
v0
Cursor
Claude Code
Supabase
Figma Make
Base44
OpenAI Codex
Firebase

ENGINEERING FOR AI-
BUILT PRODUCTS

Built your product with AI tools?
We take it from working prototype to production-ready — stabilized, secured, and ready for real users and real traffic.

Learn more →
Tech stack

Technologies we use

Back-end development

TypeScript
Node.js
Node.js frameworks (Nest.js, Express, TypeORM, Sequelize)
Python
Python frameworks (FastAPI, Django)
SQLAlchemy
Microservices
Infrastructure Services (HAProxy, NGINX, NATS, Lambda Functions, RabbitMQ, NATS, SQS)

Front-end development

JavaScript
TypeScript
HTML & CSS
Tailwind
React
Redux
Next.js
Redux
Redux Toolkit

Mobile app development

Kotlin
Swift
Objective-C
SwiftUI
React Native

Quality assurance

Postman
Linear
Jira
JMeter
Fiddler
Charles
Xcode
Android Studio

DATABASES & STORAGES

MySQL
PostgreSQL
MongoDB
Amazon S3

DevOps/Cloud

AWS
CircleCI
GitHub Actions
Docker
Kubernetes
CDN
Ansible

AI TOOLS

GitHub Copilot
Cursor
Claude Code
OpenAI Codex
Supabase AI

in numbers

THE PROOF BEHIND THE PROCESS

85%

recurring customers

$12M

the biggest fundraising round by one startup

X3 MRR

growth of partner's business in 5 months

2 weeks

for project start

70+

products launched

7+ years

av. partnership duration with SMBs and product companies
Custom Software Development
CASE STUDIES

PRODUCTS WE'VE HELPED SHIP AND SCALE

We make projects for our clients from
various industries.
Our cast-iron
goal is to
make functional
and
attractive products
and connect them
with their audiences.
Custom Software Development
what our clients say

Hear It from Those Who've Made the Leap

E-commerce software development
“Gilzor successfully delivered a fully functional solution with all the required features within schedule. They ensured excellent project management and were highly attentive to the client's feedback.”
E-commerce software development

Alex Chist

Founder, A C Projects
“Gilzor has delivered the app with all the necessary features, including a complex filter system and multilingual environment functionality. They've ensured transparent project management and offered regular demos and updates. Their proactivity, responsiveness, and positive attitude are commendable.”
E-commerce software development
Marlon Meuters
Founder & CEO, CLUSTER ONE GmbH

Test your idea and show its value to users and investors

Custom Software Development

01

Is it necessary to validate a startup idea at all and why yes?

Test your product idea

Custom Software Development
Reduces the risk of failure
Custom Software Development
Saves time and money by avoiding unwanted products/services
Custom Software Development
Helps improve the idea via users’ feedback
Custom Software Development
Clarifies the target audience, needs, and preferences, guiding development direction
Custom Software Development
Helps to understand the best price
Custom Software Development
Foster investors’ trust
Download marketing pitch deck
Custom Software Development
Custom Software Development
Custom Software Development

02

What is PMF?

Find Product Market Fit

It’s the point where a product meets the needs of the market and creates a viable business opportunity.
Custom Software Development
Conduct market research
Custom Software Development
Define the target audience
Custom Software Development
Create a compelling value proposition
Custom Software Development
Test and iterate messaging
Custom Software Development
Collect users’ feedback
It’s the point where a product meets the needs of the market and creates a viable business opportunity.
Custom Software Development
custom software development
03
strategy

Design go-to-market strategy

Launching a new product or expanding into a new market? A great go-to-market strategy is key to achieving your goals and getting the most out of your investment.

We’ll help you define:

Custom Software Development
Who your customers are and how to reach them
Custom Software Development
The best price for your product or service
Custom Software Development
How to advertise and promote your product
Custom Software Development
Where and how to sell your service or product
custom software development