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Scaling online retail: kotlin app development

Telemedicine software solution for therapy services

Adaptive, scalable, and secure online-therapy platform for mental health care

98%

satisfied platform users

8

months to achieve ROI

45K+

registered users within the first year

Telemedicine software solution

IT-service type

Custom software development

Business vertical

Telemedicine / Mental health

Tech stack

Java, Kotlin, AWS, React

Partner

A Western European healthtech startup providing digital mental health and online therapy services.

Partner’s challenges

As a scaling digital health company, the partner needed to enhance platform efficiency and reach while ensuring regulatory compliance. They focused on phased product rollout to manage resources effectively and sustain growth, aiming to:

Guarantee patient data security and verified therapist onboarding.

Eliminate workflow fragmentation by combining sessions, chat, and records in a single telemedicine platform.

Launch web and Android solutions first, with iOS planned for the next release phase.

Improve user loyalty through consistent, personalized therapy delivery.

Solutions proposed by Modsen

Secure teletherapy environment with encrypted communication and data protection

Unified telemedicine software solution integrating scheduling, sessions, and medical records

Robust Java- and Kotlin-based backend powering Android app and responsive web client

Engagement tools supporting reminders, feedback, and progress tracking

Scalable AWS-based cloud infrastructure for stable performance and growth

Mobile-first architecture prepared for future iOS rollout

Project team

1

Project manager

1

Business analyst

1

Team lead

1

UI/UX designer

4

Back-end developers

2

Front-end developers

2

Mobile engineers

3

QA engineers

Project team
Data protection
Photo identification
Payments
History
Loan creating
Profile
Profile

Development process

Analysis and planning

Our team conducted focused discovery sessions to define a clear scaling roadmap – avoiding certification risks and over-engineering, while enabling a compliant product launch with early monetization potential.

UX/UI design

We rethought the online-therapy platform experience to reduce cognitive load and create emotional comfort during remote therapy sessions. Through early interactive prototypes, the client tested real user scenarios and refined accessibility and engagement before development. As a result, unified design standards for web and mobile reduced rework time and accelerated product rollout.

Design

Development

The telemedicine software was built on modular microservices, allowing the startup to scale quickly and avoid downtime during live therapy sessions. At the infrastructure level, Modsen embedded encrypted storage and secure media streaming compliant with GDPR, ISO 27001, and IEC 62304. Transparent sprint cycles and regular progress reviews kept scope, timeline, and budget fully under control.

Testing

To eliminate post-release defects, the telehealth therapy platform underwent multi-level testing focused on security, video stability, and cross-device performance. QA engineers simulated real therapy sessions to verify encryption, call reliability, and EMR integrity before launch.

Client acceptance

Modsen held joint demo sessions and pilot testing with the project stakeholders to validate the solution’s performance and compliance in real use. All metrics and security checks were fully transparent, allowing the client to approve the product with confidence and zero critical issues.

Maintenance

After launch, we provided continuous telemedicine software platform monitoring and post-release optimization. The three-month maintenance phase focused on refining video stability, load handling, and analytics – helping the startup scale user activity without service interruptions.

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Business value

Secure architecture and data compliance

Encrypted infrastructure and GDPR, ISO 27001, and IEC 62304 compliant workflows increased user trust and reduced regulatory risks.

Over 98% of therapists and patients rated the platform as secure and easy to use.

Design

Unified web and mobile experience

Consistent UX and optimized performance cut onboarding time by 30%.

The telemedicine software solution helped attract around 45,000 new users within a year after launch.

Design

Growth readiness

Modular system design enables swift implementation of iOS and analytics modules.

Combined with efficient cloud scaling, the online-therapy platform achieved ROI within 8 months and opened new opportunities for market expansion and service diversification.

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