$25,000+
$50 - $99 / hr
100 - 249
Enterprise
Denmark, Aalborg
2001
Within 1 month
Expertise-Driven Software Solutions

Harness our 20+ years of IT expertise & deep domain knowledge and mastery in crafting performant, scalable applications. ➡️ 6+ years average client partnership duration, increasing day-by-day ➡️ Clients: Crestron, Energinet, New Black, SCADA International, Pro Mark, Keysight ➡️Software engineering services & Electronic equipment services: Software product engineering, System architecture & design, Software development, Quality assurance, Product re-engineering, Embedded software development, Electronic equipment QA and conformance testing, Technical writing for complex systems, Testing prototypes, Test automation for software/system tests, Cybersecurity, DevOps, UI/UX ➡️ Technologies: web, cloud, mobile, embedded, IoT, desktop ➡️ Technical certifications: SCRUM, SAFe, ISTQB, CCNA, Microsoft, PMI ➡️ HQ in Aalborg, Denmark, offices in Romania & Portugal Expertise: ➡️ Energy: Automate processes, optimize production and market planning for climate-friendly energy solutions. ➡️Wireless Communication & Automation: Enhance end-user experience, control and productivity via secure devices and professional electronic equipment. ➡️ Workforce & Facility Management: Boost productivity and decision-making with data-driven solutions for managing HR and facilities. ➡️Trade & E-commerce: Optimize logistics, payments, retail and stock management platforms to minimize resource needs and increase agility.

Expertise-Driven Software Solutions

Сompany presentation

Techreviewer rating

  Submit a review
4.8

Client review platforms

The company's reputation is reflected through ratings and reviews from different review websites:

4.3
(6 reviews)Clutch

Employee review platforms

The company's work culture and employee satisfaction from top workplace review platforms:

4.5
(31 reviews)Glassdoor

AI Overview

Powered bytechreviewer AI
This company performance overview is based on AI analysis of 6 client reviews across 1 review platform. Read more about our methodology.
Last updated: April 2026

Performance snapshot

Wirtek (formerly CoreBuild) presents a consistent, if modestly documented, performance profile anchored in custom software and mobile application development for small-to-micro-sized clients. Across six reviews from a single platform, ratings cluster in the 4.0–4.5 range, with cost value standing out as a recurring strength. Communication is the most frequently cited area for improvement, appearing in at least two reviews. All reviews date from mid-2016, limiting the relevance of this dataset to current procurement decisions.

Performance breakdown

Technical expertise
Mixed

Reviews reference proficiency across iOS (Objective-C), Android, .NET, ASP, SQL Server, HTML5, and JavaScript. However, no review qualifies as high-density with specific metrics or quantified outcomes, and quality sub-ratings average 4.2, indicating solid but not exceptional technical delivery.

Project management & delivery
Mixed

Most reviewers confirm deadlines were met, and schedule sub-ratings average approximately 4.0 across reviewable entries. One reviewer recorded a schedule score of 3.5, signaling at least one notable delivery concern. No project used high-density milestone or timeline data.

Communication & collaboration
Mixed

Communication is the most consistently flagged improvement area, explicitly cited in at least two reviews despite cross-border and cross-time-zone engagements. Positive notes on responsiveness and daily check-ins partially offset concerns, resulting in a mixed overall picture.

Reliability
Mixed

Multiple clients describe Wirtek as a dependable long-term partner, with several ongoing engagements cited. However, the absence of bug-free or product-stability references, combined with recurring communication gaps, prevents a Strong rating under the weighted evidence model.

Client satisfaction & outcomes
Mixed

All six reviewers recommend Wirtek, and willingness-to-refer scores average 4.75. Cost sub-ratings are consistently high at 4.5–5.0. However, no review provides quantified business outcomes such as revenue impact, efficiency gains, or launch metrics to support a Strong rating.

Best for

Wirtek is best suited for small startups and early-stage software companies seeking cost-effective custom development across iOS, Android, and .NET stacks, particularly where budget discipline and delivery consistency are prioritized over premium communication standards.

Clients info

Clients span software development, home services, travel, and IT solutions verticals. Engagements are predominantly with micro and small businesses, with most client organizations falling in the 1–50 employee range. Documented project budgets range from under $10,000 to $49,999, with several engagements listed as confidential. Primary industries represented include Software & IT Solutions, Home Services, Travel & Hospitality, Location-Based Social Applications. Typical client size bands include 1–10 Employees, 11–50 Employees. Common project budget ranges include Less than $10,000, $10,000 to $49,999, Confidential.

Review strength

Assessment is based on six reviews drawn from a single platform, all published within a narrow three-week window in July–August 2016. This dataset is approximately nine years old, which substantially limits its applicability to current vendor evaluations. No reviews from the past three years are available. Review date range: Jul 5, 2016 - Aug 5, 2016.

Performance breakdown

Technical expertise
Mixed

Reviews reference proficiency across iOS (Objective-C), Android, .NET, ASP, SQL Server, HTML5, and JavaScript. However, no review qualifies as high-density with specific metrics or quantified outcomes, and quality sub-ratings average 4.2, indicating solid but not exceptional technical delivery.

Project management & delivery
Mixed

Most reviewers confirm deadlines were met, and schedule sub-ratings average approximately 4.0 across reviewable entries. One reviewer recorded a schedule score of 3.5, signaling at least one notable delivery concern. No project used high-density milestone or timeline data.

Communication & collaboration
Mixed

Communication is the most consistently flagged improvement area, explicitly cited in at least two reviews despite cross-border and cross-time-zone engagements. Positive notes on responsiveness and daily check-ins partially offset concerns, resulting in a mixed overall picture.

Reliability
Mixed

Multiple clients describe Wirtek as a dependable long-term partner, with several ongoing engagements cited. However, the absence of bug-free or product-stability references, combined with recurring communication gaps, prevents a Strong rating under the weighted evidence model.

Client satisfaction & outcomes
Mixed

All six reviewers recommend Wirtek, and willingness-to-refer scores average 4.75. Cost sub-ratings are consistently high at 4.5–5.0. However, no review provides quantified business outcomes such as revenue impact, efficiency gains, or launch metrics to support a Strong rating.

Location and contacts

Denmark, Aalborg
Niels Jernes Vej 10
9220
+45 72 14 66 60
Romania, Cluj-Napoca
Str. Heltai Gáspár 1B
400427
+40 364 101 607
Romania, Cluj-Napoca
Strada József Attila 2
400347
+40 364 101 607
Romania, București
Costache Negri 1-5
050552
+40 364 101 606

Major clients

Spectralink
Keysight
Clearview Trade
Crestron
Energinet
SCADA International
ProMark
New Black