Getting the architecture right before coding starts.

Advanced modern software architecture and development design are the key to robust and modifications resilient software. We provide both services before even one line of code is written.

The Fractal Paradigm

Our Tool Kit

Volatility-Based Decomposition

Stemming from Prof. David Parnas's 1972 paper: modules hide the design decisions most likely to change, not the functions of the requirements list.

The Fractal Design Paradigm

One structural pattern repeating at every scale fitting every participant in highly distributed systems with diverse types of participants.

SOLID-Based Architecture

The five SOLID principles applied strictly across every service and layer, as structure, not as guidelines.

Standards & Design Patterns

Common industry standards and proven design patterns, applied where they belong.

Our Activities

Software Architecture and Project Design

We engineer resilient system architectures using strict Volatility-Based Decomposition and SOLID principles: each volatile business concern is contained in one isolated service, so future changes add no inter-service dependencies.

A second-stage Project Design determines time, cost and relative risk across alternatives before one line of code is written.

The results are:

Significant reduction in the time required to introduce changes - days instead of weeks or months
Significant cost savings
Increased software quality
Much smaller teams of developers

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Modernization of Legacy Code

We begin with an analysis of the legacy code and deliver a report covering its current state, strengths, and recommendations for modernization.

Modernization then proceeds on the path that fits your constraints: all at once while the legacy keeps the business in motion; a controlled hybrid process under version control, throttled by budget or other constraints; wrapping sound legacy in a modern integration layer; or targeted improvements that extend its life-cycle.

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Tailor Made Turn Key Projects

Rooted in decades of hardware-software co-design, real-time firmware and computer networking (including X.50/DSP), we deliver custom high-reliability infrastructures for any system, embedded or not, under strict military and medical standards (MIL-STD / FDA) with zero reported defects.

Our track record spans embedded real-time systems to large distributed computing systems and the communication between them and other systems.

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Software Architecture is the Foundation

Requirements change. Your core code doesn't have to.

Software systems are normally decomposed along the external behavior that satisfies the requirements list. But that behavior is extremely volatile, moving whenever the market, the regulator, the technology or the operator moves.

In the conclusion of his 1972 paper "On the Criteria To Be Used in Decomposing Systems into Modules," Prof. David Parnas suggested a different starting point: begin with the design decisions most likely to change, and build each module to hide one of them from all the others. We call this principle Volatility-Based Decomposition, and we implement it fully in the structure of your business logic.

See how it works

The Fractal Paradigm

One structure, repeating at every scale.

A system, its subsystems and its modules share one structural pattern. Learn the pattern once and you can read the whole system, at any depth, and extend it without breaking it.

Designed for highly distributed systems with diverse types of participants but with the same pattern governs a module, a subsystem, and the system as a whole.

See how it works

What You Receive

All services

Tailor Made Framework Design

Shifts most of the complexity from code development to the architecture design that precedes it.

Project Design

Time, cost and relative risk determined across a number of alternatives.

Detailed Design

From architecture down to the construction plans developers build by.

Framework Implementation

An empty skeleton encapsulating most of the complexity which is the feature generator for your business domain.

Turn Key Projects

Tailor made, end to end, utilizing all of our skills.

Legacy Modernization

Four controlled paths as follows: at once, throttled hybrid, wrapping, or targeted life-extending improvements.

Fractal Paradigm Design

For dynamically changing distributed arrays of sub-systems.

Simulators & Supervision

Simulator design and activation for Fractal-designed systems; supervision of the implementing team to keep delivery on time and on budget.

What You Can Gain

Time required to add or change a feature

Days instead of weeks or months.

Meeting schedules and budget compliance

On Time, On Budget.

Robustness

Software changes do not erode the stability of the software.

Stability

No need to replace the code after a decade or two.

Lines of Code

Meaningful reduction of the number of lines of code.

Development Resources

Meaningful reduction in development resources and team size.

Official Executive Recommendation

Enterprise Validation

Mekorot National Water Company - Digital Transformation

"Re: Architecture for connecting mobile systems to organization back-office systems"

Mekorot is undergoing a wide-range re-organization that includes an extensive digital transformation. Mobile applications for our operational personnel are a significant part of this transformation.
These applications govern the major core activities of Mekorot, including water supply management, water quality tracking, and asset maintenance. Their main architectural characteristic is the interface to Mekorot's backend organizational systems (mainly SAP).
Mr. Jabotinsky prepared the software architecture design for connecting these mobile applications to Mekorot's back-office systems, utilizing advanced architectural design methodologies.
Mr. Jabotinsky thoroughly analyzed the current state and operational needs of Mekorot, gaining a deep structural understanding of our domain. He conducted a series of technical deep-dives with Mekorot's engineering teams, identified operational constraints and potential failure points, and successfully delivered, on the allocated schedule, a modern, message-based software architecture to govern these critical interfaces.
It is highly evident that Mr. Jabotinsky possesses a profound architectural and organizational understanding.

Best regards,
Zvika Gleichman
Chief Technology Officer (CTO), Mekorot

Medical Industry Validation

Galil Medical / Boston Scientific - Turn Key Project

Scanned recommendation letter from Galil Medical, November 29, 2021; full text transcript below

Read the letter as text

November 29, 2021
To whom it may concern

Re: Testimony regarding manufacturing system developed by Tagar Computer Systems Ltd.

Back in 2011, Tagar Computer Systems Ltd designed and developed for Galil Medical, a software application for a critical manufacturing system for a disposable medical device.

The software application was designed on an off-the-shelf PC to which real time sensors were attached. The system was delivered within six months and was tested to performed according to specification. A unique feature was that all parameters of the manufacturing system are loaded from a configuration file on application launch, allowing for easy maintenance and adoption to different products, without further software releases.

Today, 10 years later, the manufacturing system runs non-stop without a single failure, demonstrating the high quality of the software developed by Tagar Computer Systems Ltd.

Sincerely,
Dror Trumer, Site Director
Galil Medical / Boston Scientific

Our Clients

All clients

Recent Projects

Portfolio

Mekorot

Software Architecture and Project Design for Mekorot - Israel's National Water Company

Mekorot is undergoing vast reorganization part of which is a digital transformation which pivots on connecting field workers to Mekorot's back-office data online via dedicated mobile applications.

We performed the back-end software high level architecture design followed by software development project design exactly on time. Mekorot received full blue-print of the new software and its development process following the IDesign Method.

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Bruker JV IL

Turnkey projects, including Software Architecture for Bruker JV IL

Upgrading of old product with limited communication to modern communication that can support concurrently many users and periodic status logger.
WCF intrastructure to connect many concurrent clients, including periodic logger, to many hardware devices operated by TCP/IP comms.

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IAI

Architecture and High Level Design (HLD) for IAI

Re-design of old software. We designed the architecture of the new software.

IAI received an architecture and high level design document.

We have also written a MIL-STD Software Design Description (SDD) document for that design.

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Providing simple solutions to complex problems.

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