Deprexis /
Performance Stabilization & Secure Payment Workflows
Drupal Platform Hardening, Automated Testing, and Secure eCommerce Integration for a Digital Mental Health Service
Deprexis is a digital mental health platform where stability, privacy, and performance are business-critical. An experienced engineering extension team was engaged to improve reliability, accelerate delivery, and strengthen sensitive user and payment workflows.
The platform was based on a classical Drupal installation with a custom Tailwind-driven theme. Key work was focused on stabilizing production behavior, improving speed across high-traffic pages, and building a secure payments module integrated with ABank (Greece).
Strong automation practices were introduced to ensure predictable releases. A large automated test suite was implemented to validate both security aspects and user/admin order workflows, minimizing regression risk and improving confidence in further development.
Technologies
Drupal DXP
Tailwind CSS Theme
Custom Commerce / Payments Module
ABank Integration
PHPUnit Automated Tests
Behat E2E Tests
Industry
Project Scope
- Performance & stability improvements
- Secure online payments and order workflows
- Automated QA and regression protection
Teams Collaboration
Delivery Model
[The Challenge]
A noted decrease in platform speed and stability was impacting delivery confidence and operational reliability. At the same time, a secure payment workflow was required to support online services via ABank integration, which increased requirements for security, validation, and predictable release processes.
The solution needed to ensure that improvements were measurable, repeatable, and protected by regression automation—especially across payment flows and admin operations.
[The Solution]
Stability & Performance Hardening
Performance bottlenecks were analyzed and resolved with caching, rendering, and query-level improvements to ensure predictable page behavior.
Secure Payments Module
A dedicated Drupal eCommerce module was implemented to support ABank payment processing for online service ordering.
Security-Oriented Automated Testing
30+ PHPUnit automated tests were created to validate security-sensitive behaviors across payment and integration logic.
Workflow Automation & Regression Protection
80+ Behat tests were implemented to validate end-user and admin ordering workflows end-to-end.
CI-Friendly Delivery Practices
Repeatable validation routines were introduced to reduce deployment risk and improve release confidence.
[Core Features]
[Implementation]
Performance Profiling & Root Cause Analysis
Performance issues were analyzed across key pages and workflows, and improvement priorities were defined.
Payments Module Delivery
A secure payments workflow was delivered through a custom Drupal module integrated with ABank services.
Automated Testing Strategy
Security and behavioral regression suites were implemented using PHPUnit and Behat.
Stabilization in Continuous Delivery
Validation practices were aligned with CI delivery to ensure stable releases and faster iterations.
[Business Outcomes]
Improved Performance
Platform speed was improved, enabling faster user journeys and a stronger overall UX.
Higher Operational Stability
Production behavior was stabilized with improved predictability across workflows.
Secure Online Service Ordering
A safe payment workflow was delivered through ABank integration.
Reduced Release Risk
Regression risk was reduced through extensive automated validation.
Confidence in Future Development
Delivery became safer and faster due to strong workflow test coverage.
Stronger Compliance & Security Posture
Security-sensitive behaviors were validated through automation and structured payment logic.
[Next Projects]
“It was my pleasure working with Oleksiy (PathToProject) on a new Drupal website. He is a true full-stack developer—the ideal mix of DevOps expertise, deep front-end knowledge, and the structured thinking of a senior back-end developer. He is well-organized and never lets anything slip. Oleksiy understands what needs to be done before being asked and can manage a project independently with minimal involvement from clients, product managers, or business analysts. One of the best consultants I’ve worked with so far. ”
“Oleksiy (PathToProject) and I worked together on a Digital Transformation project for Bayer LATAM Radiología. Oly was the Drupal developer, and I was the business lead. His professionalism, technical expertise, and ability to deliver functional improvements were some of the key attributes he brought to the project. I also want to highlight his collaboration and flexibility—throughout the entire journey, Oleksiy exceeded my expectations. It’s great when you can partner with vendors you trust, and who go the extra mile. ”
“Oleksiy (PathToProject) is a great professional with solid experience in Drupal. He is reliable, hard-working, and responsive. He dealt with high organizational complexity seamlessly. He was also very positive and made teamwork easy. It was a pleasure working with him. ”
“Oleksiy (PathToProject) worked with me on a specific project over a period of three months. He took full ownership of the project and successfully led it to completion with minimal initial information. His technical skills are unquestionably top-tier, and working with him was a pleasure. I would gladly collaborate with Oleksiy again at any opportunity. ”
London School of Hygiene & Tropical Medicine (LSHTM)Drupal-Based Research Data Management Platform
“Oleksiy (PathToProject) has been a valuable developer resource over the past six months for us at LSHTM. This included coming on board to revive and complete a stalled Drupal upgrade project, as well as carrying out work to improve our site accessibility and functionality. I have found Oleksiy to be very knowledgeable and skilful and would happily work with him again in the future. ”
“Oleksiy (PathToProject) is demanding and responsive. Comfortable with an Agile approach and strong technical skills, I appreciate the way he challenges stories and features to clarify specifications before and during sprints. ”
“As Dev Team Lead on my project for 10 months, Oleksiy (PathToProject) demonstrated excellent technical skills and the ability to handle complex Drupal projects. His full-stack expertise is highly valuable. ”
