Avis
2023Car rental platform
Türkiye's largest rental fleet, bookable in four steps.
Visit siteIstanbul, since 2007
Nineteen years
on the other
side
of the
portal.
We code the web, mobile, commerce and AI systems that Avis, Fenerbahçe, Yapı Kredi and American Hospital run on.
A technology partner, not a vendor.Nineteen years. Seventy people. A thousand projects.We make what you already depend on faster to run.
Who we are
PortalGrup helps organisations move through digital transformation without stopping the business while it happens. We deliver scalable platforms, advanced web and mobile products, and the technology strategy behind them, for leading brands in Türkiye and beyond.
Our work reaches past delivery into legacy modernisation, AI consultancy and the adoption of intelligent systems that cut operating cost. Combining engineering depth with practical commercial judgement, we lift client technology stack performance by up to 40 percent.
What defines us is the team. Six years of experience on average, technical depth paired with ownership and collaboration, alongside a standing commitment to graduates we train into the next generation of engineers.
Guessing is expensive. Every step we take is designed to remove a surprise.
The Work
Platforms in daily use by millions of people across banking, sport, healthcare, mobility and retail.
Fenerbahçe SK
2024Super app
Tickets, finance, membership and the fan feed in one app.
Visit site
Yapı Kredi
2022CMS consolidation
Thirteen banking domains moved onto one platform.
Visit site
American Hospital
2023Healthcare platform
Appointments, records and departments in one journey.
Visit site
Fenerium
2024Commerce
The official club store, built for kit launch day.
Visit site
Eczaneden
2023Pharmacy commerce
Health and beauty, delivered from a real pharmacy.
Visit siteCapabilities
Thirteen practices. Most projects use four or five of them at once.
13 capabilities
AI and automation
AI tools that solve a real problem, not a demo. Tested, secure, and designed to show a result before it changes how your team works.
Process and requirement analysis
A close read of how the business runs today, so the workflows we build come from data rather than assumption.
DXP and CMS implementation
A content platform your editors can run on day one, set up to scale rather than to be fixed later.
Platform migration
Planned in stages so rankings, content and speed all survive the move. Everything is tested before it goes live.
Website development
Fast, conversion-focused sites on clean code that your own team can keep extending.
Mobile applications
iOS, Android and hybrid, built for speed and stability from first release through long-term support.
UI and UX design
Interfaces designed around observed behaviour and commercial goals. Clearer navigation, fewer drop-offs.
SEO, GEO and CRO
Visibility across search engines and AI answers, paired with page work that turns the traffic into customers.
DevOps and CI/CD
Pipelines, environments and monitoring set up so releases ship faster with less downtime.
E-commerce
Stores that load fast and check out simply, with search, payments and performance handled from day one.
QA and testing
Real devices, real browsers, real scenarios before launch, and a clear report of what needs fixing.
Content and copywriting
Copy that explains what you do in your own voice, written to support search and to convert.
Omnichannel marketing
Web, email, social and paid connected so customers meet one consistent message everywhere.
AI and machine learning
Predictive analytics, natural language processing and intelligent automation, delivered with Cohere at enterprise grade and kept private.
DXP and headless CMS
One content source published across every channel, on Kentico and Sitecore, with the governance a large organisation actually needs.
Two of them go deeper
Proof
19years
Building since 2007, with clients who were here at the start still here now.
1000projects
Shipped across banking, sport, healthcare, mobility, pharma and retail.
70people
Engineers, designers, analysts and testers, six years of experience on average.
21countries
Work delivered for clients operating well past the Turkish market.
25awards
Including first place at Altın Örümcek, Gigi, Martech and Newgen.
Partners
Gold and certified partnerships that put enterprise platforms directly in our hands.
Certified
- ISO 27001:2022
- ISO/IEC 15504 SPICE
- ISO 9001:2015
Recent awards
Altın Örümcek
First place, Crystal Award
Health category, Eczacıbaşı Dynavit
Future of Cloud and AI
First place
Artificial intelligence category
Martech Awards
First place
Best use of technology in digital platforms
Istanbul Marketing
First place
Digital and technology, chatbot category
Brandverse
Bronze
Corporate website excellence, AI-enhanced website
Newgen Awards
First place
Health services category
Method
Seven steps, in this order, on every project. The order is the point: each one removes a surprise the next one would have paid for.
- 01
Analysis
We define what success looks like before anyone estimates anything.
- 02
Plan
A proposal shaped to the actual scope, not to a template.
- 03
Design
Visual direction and technical architecture decided together.
- 04
Build
Agile delivery, with something running that you can open every sprint.
- 05
QA
Every feature validated on real devices before anyone talks about a launch date.
- 06
Launch
Going live is the middle of the project, not the end of it.
- 07
Improve
We stay. Most of our clients have been with us for years.
What people say
Throughout our collaboration they have demonstrated deep technical expertise and a professional approach.
Alumni
People who worked here, in their own words, years after leaving.
My six years here was a defining period. Its culture of trust and responsibility refined my leadership perspective.
Kadir Ergün
Backend Team Lead
Ideas were valued, teamwork was strong, and everyone could learn from each other.
Burcu Yalanuz
Key Account Team Lead
What made my time valuable was not only the projects, but the team culture we built together.
Kaya Kahveci
Mobile Team Lead
I made wonderful friends here, and we are still picking up where we left off.
Seda Kaya
Executive Assistant
Joining as a fresh graduate and getting to work with major companies was a meaningful start to my career.
Şeyma Turalıoğlu
Project Manager
An institution that offers real development, through a culture of growing talent from scratch.
Çamay Duran
QA Team Lead
Filled with learning, great colleagues and a real commitment to delivering the best for clients.
Barış Tufan Ermete
Sitecore Team Lead
Kağıthane, Istanbul
We spend a lot of time here, so we made it worth it. Open enough to collaborate, quiet enough to focus.
Open roles
We hire experienced engineers and we train graduates. Both routes are open right now.
Project Manager
Key account management
Requirements, documentation and delivery across agile and waterfall teams.
ApplyFrontend Developer
React
Responsive build, Sass, cross-browser work and Git-based collaboration.
ApplySoftware Developer
.NET
N-tier architecture, REST and SOAP integration, Sitecore and Kentico.
Apply
Start here
The Crossing
Five questions. It takes about a minute, and it means our first reply is a real answer instead of a request for more information.