Our work.

We've had the honour of working with some really talented teams, several reputable companies and notable start-ups.

The Estonian Information Technology Foundation
[Security testing]

Dream Apply - student admission software

We were pleased with the professional and customer centered service from Celeg Hannas. At the end of the project we got more than we hoped for. Agreements were filled fast and with great quality.

- Liivia Mahlapuu, Product manager
LHV bank
[Functional, UI/UX, performance testing]

Credit and Debit Card management system, self-service solution

Celeg Hannas offered a testing service with professional attitude and the high quality work done by CH helped us complete our work so that our clients were satisfied.

- Meelis Kivimäe, IT Project Manager
Enterprise Estonia
[User acceptance testing]


Although our co-operation lasted for a brief period, Celeg Hannas proved themselves as professionals on the field and offered high-quality service.

- Kristi Püüman, visitestonia.com project manager
Tele2 Estonia
[Functional, performance, UI/UX, security testing]

e-shop, self-service solution

Collaboration with Celeg Hannas to test the accordance with the specifications of the new online store and self-service environment was successful. Despite the intense deadlines and high testing strain before making the product available for the client, Celeg Hannas flexibly enlarged the testing resources and coped with new functionalities and changed demands. Concurrently they maintained the procedure of testing agreed upon beforehand, guaranteeing the management of all the proposals and found bugs (adequately described, re-tested, kept in right status and priority). Reports were precise, work methods clear for the client and the progress observable. We are thankful for the collaboration and we hope to involve them in future projects.

- Raul Juhanson, e-shop project manager
Estonian Information System Authority
[Test process consulting]

X-Road v6. In co-operation with CGI Estonia

The team at Celeg Hannas showed great dedication to our project. They have proven they can work well even in time-critical situations.

- Tuuli Pärenson, X-Road project manager
TKM Grupp
[Functional, UI/UX, performance testing]


Celeg Hannas was always reachable, communication was fluid. We received regular structural overviews, giving us a good understanding of the overall state of the project. Celeg Hannas completed technically challenging tasks that we had been struggling with before. There was never a sense of panic - we knew we could rely on professionals and that everything was under control. On launch day, our product was in good shape and received good feedback. The end result was worth the investment.

- Katrin Lepp, IT-services project manager
[Security testing]

Interbank payment platform

As a provider of financial services, security is important to us. Celeg Hannas gave us a thorough overview of our product’s security and helped us make informed decisions in improving security. Drawing Celeg Hannas into our project did not require notable effort from our side. The team at Celeg Hannas easily familiarised theirselves with our project’s details. Their delivery quality exceeded our expectations.

- CTO / Co-founder
TKM Grupp
[Functional, UI/UX, performance testing]

Viking Security stocktaking system

Eesti Energia
[Functional testing]

SEPA payment gateway

Eesti Energia
[Functional, API and web testing]

Open market contracting platform

Eesti Energia
[Static, functional, usability, web]

Customer care functionality

[Co-operation in various projects]

[Web API desktop all-around testing]

Bulk-messaging service

[Security testing]

KLIS - Environmental Permits Information System

Estonian Film Institute
[Functional, performance, UI/UX testing]

EFIS - Estonian movie database

[Functional, performance, security testing]

Platform for holding creative award competitions

[Functional & performance testing]

Time tracking tool

[Functional & UI/UX testing]

Crowd-testing platform

[Security testing]

Sales pipeline software

Erply Books
[Security testing]

Erply accounting module

[Functional & UI/UX testing]

Secure messenger app

You seek quality...

...work with us and you shall find it. Together we can find a solution fitting your needs, so go ahead and get in touch.

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