Modern, Advanced and Scalable Web Applications
By combining technology, design and strategy, we build web systems that make a difference in the digital world.




Software
Advanced features powered by modern web technologies.
Integrated AI
We automate processes, boost efficiency and make your web applications smarter.
OpenAI
Widely used GPT models for general-purpose AI use cases.
Claude
Anthropic's large-context models, well suited to coding and reasoning tasks.
Gemini
Multimodal models designed to work closely with Google's ecosystem.
Meta
Open-weight Llama models with a strong focus on flexibility and privacy.
Adobe Firefly
Models designed for licensed image generation.
HuggingFace
An MLOps platform that gives access to thousands of models.
Outstanding Performance
We deliver maximum performance through modern architecture, caching and scalable systems.


High-Grade Security
We provide end-to-end protection with current security protocols, WAF and monitoring systems.


Advanced Authorisation
We offer fine-grained access management at the user, team and organisation levels.
Role-Based Access
Provides precise access control based on user and team roles.
Hierarchical Structure
Offers flexible permission definitions across organisation, team and user levels.
API Integration
A secure, token-based access system compatible with microservice architectures.
Audit Logs
Records every access event to enable full traceability.
Security
Advanced protection methods to keep your services secure.
Encrypted Sensitive Data
We encrypt your sensitive data with AES-256, making it effectively impossible to read or meaningfully use the data even in the event of a breach.
Periodic Penetration Testing
By continuously auditing your systems with regularly scheduled penetration tests, we identify and close potential vulnerabilities before they can be exploited.
Advanced Firewall
By continuously monitoring and filtering your systems with advanced firewall rules, we deliver proactive protection against unauthorised access and malicious traffic.
Two-Step Verification
We secure your sign-in processes by adding an extra layer of protection with two-step verification, minimising the risk of unauthorised access to your accounts.
Infrastructure
A robust infrastructure for continuous, uninterrupted service.
Reported Operational Metrics
We monitor the operational status of your systems every minute and provide detailed monthly availability and performance reports.
Auto-Scaling
Our infrastructure automatically scales to visitor and resource demand, delivering maximum performance and availability.
Global CDN and Uptime Monitoring
We serve your web assets quickly and with low latency via a global CDN while continuously monitoring availability and responding to any issues immediately.
Powerful Servers
Thanks to our high-performance, powerful servers, we ensure your systems run quickly, reliably and without interruption under any conditions.
Data Retention
Data processed in line with legal requirements and stored securely.
Full Regulatory Compliance
We design your infrastructure to be fully compliant with all applicable legal regulations, including KVKK and GDPR, so you can manage your data and processes securely.
Real-Time Data Backup
By backing up your data in real time, we enable you to restore your systems quickly and smoothly in the event of a failure or data loss.
Recorded Privileged Actions
We record every privileged user action in the system in detail, enabling you to manage transparency, auditability and security processes thoroughly.
Advanced Cookie Management
We help you manage cookie usage in line with legal requirements, keep user consents under control and safeguard data privacy with confidence.
Project Process
With experience from more than 250 projects, we plan and effectively manage web development processes end to end.
Introduction and Initial Analysis
We clarify the goals, user needs and project scope, and analyse the current situation, the competition and the risks.
Solution Design and Planning
We define the technical requirements, user flows and project timeline, creating a clear roadmap for the development process.
Design and User Experience
We design mobile-first, user-friendly and aesthetic interfaces to deliver a fluid experience on every device.
Development and Integration
We build secure, scalable and high-performance applications with modern technologies and carry out the required integrations.
Testing and Release
We run comprehensive tests across different devices and platforms to fix issues, then release after performance and security checks.
Ongoing Support and Development
After launch, we activate monitoring and analytics tools and ensure sustainability through ongoing maintenance and development.
Featured Projects
A selection of standout projects we have delivered to strengthen our clients' digital presence.
TÜSİAD
We delivered a message consent management system for TÜSİAD, founded in 1971 and composed of Turkey's leading entrepreneurs and business executives.
sahibinden.com
For Otobid, the venture by sahibinden.com — one of Turkey's largest digital platforms — we delivered a content management system equipped with calculation tools.
PwC Turkey
We developed and delivered the event management system required by PwC Turkey, one of the world's leading audit and tax services firms.
Sabancı University
For Sabancı University — founded in 1994 with the philosophy of "creating and developing together" — we delivered a modern design system and a corporate website.
İş Elektrik
We successfully completed the corporate website project for İş Elektrik, which entered the Turkish electricity market in 2025 as part of the İşbank Group.
Education Volunteers Foundation of Türkiye
Founded in 1995, TEGV is one of Türkiye's most established and respected foundations. We modernised its official website using modern technologies, and the project went on to win multiple awards.
Recognised in 14 Categories Across Three Projects
By combining design with measurable impact and long-term quality, three of our projects have been recognised in 14 categories over three consecutive years, reaffirming the standards we work to.
We are proud to see our focus on user experience, accessibility and performance recognised by the industry.
2022
Türkiye Eğitim Gönüllüleri Vakfı
2023
Cumhuriyetin Yüzleri
2024
Toplum Gönüllüleri Vakfı
Modern, Advanced Technologies
We run your services on cloud-based, auto-scaling infrastructure, supported by a web application firewall, CDN, zero-trust network access and regular backup policies.
Using modern technologies such as Next.js, TypeScript, Python and Laravel, we build high-performance, secure software that is ready for what comes next.
Modern technology improves performance and security while giving your services the flexibility to scale smoothly as your business grows.
Marsus Engineering Team
Have a Question?
Scalable cloud infrastructure and computing services from Amazon.
Google Cloud's platform for infrastructure and API services.
A global edge platform for CDN, DDoS protection, WAF and high-performance DNS.
Packages applications and their dependencies into portable containers so they run consistently in any environment.
A modern React framework with built-in support for SSR and SSG.
A versatile programming language with a rich library ecosystem that supports rapid development.
A modern PHP framework for building robust, high-performance web applications with MVC architecture.
A JavaScript runtime built for scalable, asynchronous web applications.
Seamless Integration
We integrate our solutions seamlessly with the services and systems your team already relies on.
How Can We Help?
Whether you have a project in mind, a question to ask or simply an idea to discuss, we would love to hear from you.
Email Us
Email the Marsus team at any time and we will get back to you as soon as possible.