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Legacy C++/C# Rescue and Stabilization

Cronsoft rescues and builds operational software for teams dealing with legacy systems, hardware-connected workflows, and device-backed platforms.

Our primary focus is C++/C# rescue: reverse engineering, build recovery, CI/test scaffolding, stabilization, memory/performance work, and controlled modernization including Windows-to-Linux porting. We help teams recover systems that no longer build reliably, crash in production, depend on tribal knowledge, or have become too risky to change.

  • Min project size
    $1,000+
  • Hourly rate
    $50 - $99 / hr
  • Employees
    2 - 9
  • Locations
    Białystok, Poland
  • Year founded
    Founded 2019

1 Locations

  • Białystok , Poland

Service Lines
Computer Engineering
5%
Select Focus Area
Application Platforms
Linux server
85%
Windows server
15%
Frameworks and CMS
Other frameworks and CMS
70%
.NET
30%
Programming & Scripting
C++
35%
C#
30%
C
15%
Objective C
5%
Industries
Information technology
30%
Medical
25%
Consumer products & services
15%
Energy & natural resources
15%
Manufacturing
15%
Clients
Small Business (<$10M)
90%
Enterprise (>$1B)
5%
Midmarket ($10M - $1B)
5%

Pricing Snapshot

Min. project size $1,000+
Avg. hourly rate $50 - $99 /hr
Rating for cost 4 /5

Most Common Project Size

$200,000 - $999,999 based on 1 review
< $49,999 $50,000 - $199,999 $200,000 - $999,999 > $1,000,000

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Highly Rated Similar Providers

Overall Review Rating

4.5
  • Quality

    4.5 /5
  • Schedule

    4.5 /5
  • Cost

    4.0 /5
  • Willing to Refer

    5.0 /5
See all 1 Reviews

Cronsoft Reviews

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Telemedicine Platform Dev for Medical Device Manufacturer

  • Custom Software Development Mobile App Development Web Development
  • $200,000 to $999,999
  • Dec. 2016 - Aug. 2024
4.5
Quality
4.5
Schedule
4.5
Cost
4.0
Willing to Refer
5.0

“They were able to work with different low-level communication protocols used in our medical devices.”

Sep 4, 2026
IT Project Manager, Diagnosis s.a
Pawel Makarewicz
Verified
  • Medical
  • Bialystok, Poland
  • 51-200 Employees
  • Online Review
  • Verified

Cronsoft developed a telemedicine platform for a medical device manufacturer. The team created mobile apps with custom BLE device connectivity, server backends, web frontends, and local desktop services.

Showing 1-1 of 1 Reviews

Our Story

Cronsoft is a small senior engineering team based in Poland. We rescue and build operational software where reliability matters: legacy C++/C# systems, custom production-line tools, device telemetry, BLE mobile apps, and backend infrastructure.

Our work is often NDA-bound, so we focus on measurable delivery: reproducible builds, CI, traceability, clear handover, and systems clients can keep maintaining.

What Sets Us Apart

Legacy rescue as a defined process

We first make the system build, map dependencies, add CI/tests, stabilize high-risk areas, and only then modernize in controlled slices. Full rewrites are only suggested in worst case scenarios.

Hardware-connected software experience

Our strongest fit is rescue work where software touches real operations: production stations, devices, telemetry, QA, field tools, operator workflows, and management platforms. We understand the constraints that make these systems hard to build, test, stabilize, and maintain.

Authorized binary-level reverse engineering

When source code is missing/incomplete, or unreliable, we can work from binaries and runtime behavior. We recover protocols, file formats, integrations, and system behavior so software can be documented, ported, or replaced. We only do this on systems the client owns or is authorized to analyze.

Locations (1)

Praw Kobiet 4 BiałystokPoland 15-535

2 - 5

Contact Cronsoft

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Diagnosis S.A.

(1)
Diagnosis S.A. Logotype

Pawel Makarewicz