$100,000+
$50 - $99 / hr
100 - 249
Enterprise
Croatia, Zagreb
2014
Within 1 month
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We build custom enterprise-grade digital products that support businesses to effectively accelerate their mission-critical goals, and unlock new business opportunities enabled by technology.

Our services: product research and design, software development and architecture, custom digital products, mobile app development, application modernization, tech consulting, business analysis, quality engineering, project management.

Our domain expertise: Finance/Leasing, Government, Telco, E-commerce.

Use cases: business process management integration (Camunda) and e-commerce solutions for pharma clients, customer identity solutions for telecom clients, indoor positioning (IoT) in oil& gas industry, re-engineering of legacy software solutions for insurance client, web application development for financial leasing client, mobile app development for entertainment and banking clients, integration of several ERPs into one database for construction client.

Global enterprises, mature SME and scaleups rely on us to translate their business requirements into tangible value and to deliver digital products on-time in budget.

What sets us apart is our wide industry experience with domain knowledge of specific business processes in highly complex and regulated industries such as pharma, telecom, banking and insurance, and the seniority of our team to build products that address those challenges.

Our team of over 180 predominantly in-house talents ensures superior quality, transparency, and undivided attention to our customers' success.

Located in the heart of Europe, our experts and management team are always available for onsite visits, and our cultural compability gurantees a frictionless experience.

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Techreviewer rating

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4.8

Client review platforms

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

4.9
(19 reviews)Clutch
4.6
(20 reviews)Google

AI Overview

Powered bytechreviewer AI
This company performance overview is based on AI analysis of 19 client reviews across 1 review platform. Read more about our methodology.
Last updated: April 2026

Performance snapshot

Notch Software Solutions (formerly Agency04) presents a consistently strong performance profile across a broad range of custom software, staff augmentation, and AI development engagements. The vendor earns predominantly strong ratings across all five evaluation categories, supported by a high volume of detailed, multi-year reviews. A 30% efficiency gain for a telecommunications client and board-level AI project approvals illustrate the firm's capacity to deliver measurable outcomes. No significant recurring concerns emerge across the review corpus.

Performance breakdown

Technical expertise
Strong

Reviewers consistently highlight deep technical knowledge across Java, Angular, React, Scala, Camunda, Azure, NLP, and predictive analytics. Multiple clients noted proactive problem-solving and the ability to rapidly grasp complex systems, including national-scale information infrastructures and regulatory SaaS platforms.

Project management & delivery
Strong

Timelines were met or exceeded across the majority of engagements, including a tight-deadline educational technology delivery and consistent milestone progress for a life sciences SaaS roadmap. Scrum methodology with structured sprints was frequently cited as a strength supporting delivery predictability.

Communication & collaboration
Strong

Multiple reviewers across geographies — including the UAE, Belgium, Germany, and the US — praised Notch's responsiveness, transparent communication, and seamless integration into client teams. The team's willingness to share opinions while remaining receptive to client direction was a recurring positive theme.

Reliability
Strong

Notch maintains high sub-metric scores for quality and schedule across nearly all reviewed engagements, with quality ratings averaging 4.9 out of 5.0 on the platform. Long-running relationships — some exceeding three years — and repeated client referrals further substantiate consistent delivery reliability.

Client satisfaction & outcomes
Strong

A 30% operational efficiency gain for a telecommunications client surpassed a 10% target; AI consulting work secured board approval and funding for a pilot project. Multiple clients reported daily active use of delivered solutions by hundreds of users, and one automotive client noted adoption by a major leasing company.

Best for

Notch is best suited for mid-to-large enterprises seeking long-term staff augmentation, custom software development, or AI-driven solutions across telecommunications, IT, and SaaS verticals, particularly where seamless team integration and proactive technical guidance are priorities.

Clients info

Notch serves a diverse client base spanning telecommunications, information technology, automotive, life sciences, education, manufacturing, and construction sectors. Clients range from small startups to large enterprises with over 10,000 employees, with the most common band being 51–500 employees. Project budgets most frequently fall in the $200,000–$999,999 range, though engagements from under $50,000 to over $1,000,000 are represented. Primary industries represented include Information Technology, Telecommunications, Automotive, Life Sciences / Regulatory SaaS, Education, Manufacturing, Construction Technology. Typical client size bands include 11–50 Employees, 51–200 Employees, 201–500 Employees, 1,001–5,000 Employees, 10,001+ Employees. Common project budget ranges include $200,000 to $999,999, $10,000 to $49,999, $1,000,000 to $9,999,999.

Review strength

The assessment is based on 19 reviews drawn from a single platform. The review corpus spans from January 2019 to December 2025, with the majority of reviews dated 2020 and beyond. Seven reviews were published within the last 12 months, indicating strong recency. Note that several reviews dated 2018–2021 carry reduced weight due to age and the company's prior branding as Agency04. Review date range: May 11, 2018 - Dec 17, 2025.

Performance breakdown

Technical expertise
Strong

Reviewers consistently highlight deep technical knowledge across Java, Angular, React, Scala, Camunda, Azure, NLP, and predictive analytics. Multiple clients noted proactive problem-solving and the ability to rapidly grasp complex systems, including national-scale information infrastructures and regulatory SaaS platforms.

Project management & delivery
Strong

Timelines were met or exceeded across the majority of engagements, including a tight-deadline educational technology delivery and consistent milestone progress for a life sciences SaaS roadmap. Scrum methodology with structured sprints was frequently cited as a strength supporting delivery predictability.

Communication & collaboration
Strong

Multiple reviewers across geographies — including the UAE, Belgium, Germany, and the US — praised Notch's responsiveness, transparent communication, and seamless integration into client teams. The team's willingness to share opinions while remaining receptive to client direction was a recurring positive theme.

Reliability
Strong

Notch maintains high sub-metric scores for quality and schedule across nearly all reviewed engagements, with quality ratings averaging 4.9 out of 5.0 on the platform. Long-running relationships — some exceeding three years — and repeated client referrals further substantiate consistent delivery reliability.

Client satisfaction & outcomes
Strong

A 30% operational efficiency gain for a telecommunications client surpassed a 10% target; AI consulting work secured board approval and funding for a pilot project. Multiple clients reported daily active use of delivered solutions by hundreds of users, and one automotive client noted adoption by a major leasing company.

Location and contacts

Croatia, Zagreb
Ulica Republike Austrije 33
10000

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