Backend & API Development
APIs, databases and business logic on Node.js and TypeScript — built to hold their shape as traffic, data and the number of users grow.
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Web Application Development
FixIT is a web application development company. We build SaaS platforms, customer portals and internal tools on Next.js and React — from architecture and interface to launch and the releases that follow.
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Web application development services
Our custom web application development services cover the whole product — building it from scratch, connecting it to your systems, and keeping it running after launch.
Third-Party Integrations
Payments, CRMs, analytics, auth providers — we connect your product to the tools it depends on, and keep those connections working as their APIs change.
QA & Release Support
Testing runs inside the build, not after it — every release is checked before it ships, so a new feature doesn't take down an old one.
Ongoing Product Maintenance
Once the product is live the work changes shape — bug fixes, dependency updates, performance, and the next round of features. We can keep building, or hand over cleanly.
Custom Web App Development
The full build — architecture, data model, interface, and the first working version your users can actually log into.
SaaS Platform Development
Multi-tenant SaaS platforms with the parts every subscription product needs — accounts, roles, billing and an admin side your team can run without us.
Frontend Development
Interfaces built on React and Next.js — fast on real devices, accessible, and structured so new features slot in without breaking what's already there.
Backend & API Development
APIs, databases and business logic on Node.js and TypeScript — built to hold their shape as traffic, data and the number of users grow.
Third-Party Integrations
Payments, CRMs, analytics, auth providers — we connect your product to the tools it depends on, and keep those connections working as their APIs change.
QA & Release Support
Testing runs inside the build, not after it — every release is checked before it ships, so a new feature doesn't take down an old one.
Ongoing Product Maintenance
Once the product is live the work changes shape — bug fixes, dependency updates, performance, and the next round of features. We can keep building, or hand over cleanly.
Custom Web App Development
The full build — architecture, data model, interface, and the first working version your users can actually log into.
SaaS Platform Development
Multi-tenant SaaS platforms with the parts every subscription product needs — accounts, roles, billing and an admin side your team can run without us.
Frontend Development
Interfaces built on React and Next.js — fast on real devices, accessible, and structured so new features slot in without breaking what's already there.
Backend & API Development
APIs, databases and business logic on Node.js and TypeScript — built to hold their shape as traffic, data and the number of users grow.
Our web application development process
The path a web application development project takes with us — from the first call to the first release.
Step 01
Discovery & Estimate
We map the product, the constraints and the must-haves, then come back with scope, timeline and a fixed estimate.
Step 02
Architecture & Design
Data model, integrations and screens get decided before the first line of code, not during the build.
Step 03
Development
We build in sprints — at the end of each one there's working software to open, not a status report.
Step 04
Testing & QA
Functional, regression and load checks before every release — run on the same setup your users will have, not a developer's laptop.
Step 05
Launch & Support
We ship to production, watch how it behaves with the first real users, and fix what only shows up then.
Step 01
Discovery & Estimate
We map the product, the constraints and the must-haves, then come back with scope, timeline and a fixed estimate.
Step 02
Architecture & Design
Data model, integrations and screens get decided before the first line of code, not during the build.
Step 03
Development
We build in sprints — at the end of each one there's working software to open, not a status report.
Step 04
Testing & QA
Functional, regression and load checks before every release — run on the same setup your users will have, not a developer's laptop.
Step 05
Launch & Support
We ship to production, watch how it behaves with the first real users, and fix what only shows up then.
Benefits of building your web application with FixIT
What working with a web application development company changes — in the timeline, in the code, and in what it costs to change later.
An Estimate in 48 Hours
Send the idea and the constraints. Within two working days you get scope, timeline and a price — before you commit to anything.
Your Code, Your Accounts
We work in your repositories and on your infrastructure. Nothing to migrate at the end, nothing that stops working if we stop.
Scales Without a Rewrite
The architecture is picked for where the product is going, not just for the first release. More users shouldn't mean starting over.
Works Alongside Your Team
We can run the whole build, or take the part your team isn't covering — frontend, backend or QA.
Design That Ships
Design and engineering work against the same plan, so what gets drawn is what can actually be built — and built on schedule.
Long-Term Product Stability
Monitoring, dependency updates and the work that keeps a product from decaying are part of the build, not a project you commission later.
Benefits of building your web application with FixIT
What working with a web application development company changes — in the timeline, in the code, and in what it costs to change later.
An Estimate in 48 Hours
Send the idea and the constraints. Within two working days you get scope, timeline and a price — before you commit to anything.
Your Code, Your Accounts
We work in your repositories and on your infrastructure. Nothing to migrate at the end, nothing that stops working if we stop.
Scales Without a Rewrite
The architecture is picked for where the product is going, not just for the first release. More users shouldn't mean starting over.
Works Alongside Your Team
We can run the whole build, or take the part your team isn't covering — frontend, backend or QA.
Design That Ships
Design and engineering work against the same plan, so what gets drawn is what can actually be built — and built on schedule.
Long-Term Product Stability
Monitoring, dependency updates and the work that keeps a product from decaying are part of the build, not a project you commission later.
Benefits of building your web application with FixIT
What working with a web application development company changes — in the timeline, in the code, and in what it costs to change later.
An Estimate in 48 Hours
Send the idea and the constraints. Within two working days you get scope, timeline and a price — before you commit to anything.
Your Code, Your Accounts
We work in your repositories and on your infrastructure. Nothing to migrate at the end, nothing that stops working if we stop.
Scales Without a Rewrite
The architecture is picked for where the product is going, not just for the first release. More users shouldn't mean starting over.
Works Alongside Your Team
We can run the whole build, or take the part your team isn't covering — frontend, backend or QA.
Design That Ships
Design and engineering work against the same plan, so what gets drawn is what can actually be built — and built on schedule.
Long-Term Product Stability
Monitoring, dependency updates and the work that keeps a product from decaying are part of the build, not a project you commission later.
Our case studies
A selection of the custom software we've built across industries — different products, different scales, one standard of work.
Overlap
Social travel app that alerts digital nomads and frequent travelers when their plans overlap with friends and like-minded people on the road
Feetsee
Built an intuitive and reliable digital experience for a medical device that helps detect early signs of foot inflammation and prevent diabetes-related complications
Ask Sensay
AI-powered chatbot search for a growing library of AI personas — helping users find and start a conversation with the right expert, celebrity, or historical figure in seconds
Fankee
Web platform where music fans stream, share, and earn real ownership in the tracks by the artists they support
Misty the Cloud
Companion mobile app for Misty the Cloud, a smart nursery night light — giving parents remote control over temperature alerts, sleep training, and light shows from their phone
Overlap
Social travel app that alerts digital nomads and frequent travelers when their plans overlap with friends and like-minded people on the road
Feetsee
Built an intuitive and reliable digital experience for a medical device that helps detect early signs of foot inflammation and prevent diabetes-related complications
Ask Sensay
AI-powered chatbot search for a growing library of AI personas — helping users find and start a conversation with the right expert, celebrity, or historical figure in seconds
Fankee
Web platform where music fans stream, share, and earn real ownership in the tracks by the artists they support
Our case studies
A selection of the custom software we've built across industries — different products, different scales, one standard of work.
Feetsee
Built an intuitive and reliable digital experience for a medical device that helps detect early signs of foot inflammation and prevent diabetes-related complications
Ask Sensay
AI-powered chatbot search for a growing library of AI personas — helping users find and start a conversation with the right expert, celebrity, or historical figure in seconds
Fankee
Web platform where music fans stream, share, and earn real ownership in the tracks by the artists they support
Misty the Cloud
Companion mobile app for Misty the Cloud, a smart nursery night light — giving parents remote control over temperature alerts, sleep training, and light shows from their phone
Overlap
Social travel app that alerts digital nomads and frequent travelers when their plans overlap with friends and like-minded people on the road
Feetsee
Built an intuitive and reliable digital experience for a medical device that helps detect early signs of foot inflammation and prevent diabetes-related complications
Ask Sensay
AI-powered chatbot search for a growing library of AI personas — helping users find and start a conversation with the right expert, celebrity, or historical figure in seconds
Our case studies
A selection of the custom software we've built across industries — different products, different scales, one standard of work.
Feetsee
Built an intuitive and reliable digital experience for a medical device that helps detect early signs of foot inflammation and prevent diabetes-related complications
Ask Sensay
AI-powered chatbot search for a growing library of AI personas — helping users find and start a conversation with the right expert, celebrity, or historical figure in seconds
Fankee
Web platform where music fans stream, share, and earn real ownership in the tracks by the artists they support
Misty the Cloud
Companion mobile app for Misty the Cloud, a smart nursery night light — giving parents remote control over temperature alerts, sleep training, and light shows from their phone
Overlap
Social travel app that alerts digital nomads and frequent travelers when their plans overlap with friends and like-minded people on the road
Feetsee
Built an intuitive and reliable digital experience for a medical device that helps detect early signs of foot inflammation and prevent diabetes-related complications
Ask Sensay
AI-powered chatbot search for a growing library of AI personas — helping users find and start a conversation with the right expert, celebrity, or historical figure in seconds
Technologies we work with
We use advanced and reliable technologies to create solutions that meet your business needs. Our approach ensures stability, efficiency and high-quality development.
Technologies we work with
We use advanced and reliable technologies to create solutions that meet your business needs. Our approach ensures stability, efficiency and high-quality development.
Technologies we work with
We use advanced and reliable technologies to create solutions that meet your business needs. Our approach ensures stability, efficiency and high-quality development.
Frequently asked questions
Answers to what people ask before starting a web application project.
A website presents information; a web application does work. If users log in, enter data and get something back — a dashboard, a booking, a report — you need a web application. The difference shows up in the architecture: a web app needs accounts, permissions, a database and an API, and those decisions are hard to add later.
Frequently asked questions
Answers to what people ask before starting a web application project.
A website presents information; a web application does work. If users log in, enter data and get something back — a dashboard, a booking, a report — you need a web application. The difference shows up in the architecture: a web app needs accounts, permissions, a database and an API, and those decisions are hard to add later.
Industries we build web applications for
The same stack, different problems. What a web application has to do changes a lot between a clinic and a marketplace.
Media & Entertainment
Content management, publishing workflows and viewer-facing web apps that stay fast when a release drops and traffic spikes.
E-commerce
Headless storefronts, B2B marketplaces and the admin behind them — checkout, catalogue and payment integrations that hold at peak.
Enterprise Solutions
Internal web platforms that replace spreadsheets and half a dozen tools — with the permissions, audit trails and SSO an enterprise expects.
IoT Software
Telemetry dashboards and device management consoles — the web layer where fleets of hardware get monitored and configured.
Healthcare
Patient portals, clinic dashboards and telemedicine platforms — with HIPAA and GDPR in the architecture rather than bolted on afterwards.
Wellness & Fitness
Member portals, class booking and subscription billing on the web — the side of a fitness product that lives outside the mobile app.
Media & Entertainment
Content management, publishing workflows and viewer-facing web apps that stay fast when a release drops and traffic spikes.
E-commerce
Headless storefronts, B2B marketplaces and the admin behind them — checkout, catalogue and payment integrations that hold at peak.
Enterprise Solutions
Internal web platforms that replace spreadsheets and half a dozen tools — with the permissions, audit trails and SSO an enterprise expects.
IoT Software
Telemetry dashboards and device management consoles — the web layer where fleets of hardware get monitored and configured.
Healthcare
Patient portals, clinic dashboards and telemedicine platforms — with HIPAA and GDPR in the architecture rather than bolted on afterwards.
Wellness & Fitness
Member portals, class booking and subscription billing on the web — the side of a fitness product that lives outside the mobile app.
Media & Entertainment
Content management, publishing workflows and viewer-facing web apps that stay fast when a release drops and traffic spikes.
E-commerce
Headless storefronts, B2B marketplaces and the admin behind them — checkout, catalogue and payment integrations that hold at peak.
Let’s get in touch
Have a project in mind or want to explore partnership opportunities? Let’s get in touch!
fixit.soft@fixit-soft.com
+380 93 023 42 28
