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Get a custom proposalLegacy 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.
We also build hardware-connected applications: production control software, station applications, traceability systems, device provisioning tools, and QA/test workflows. Our experience includes C++/Qt/QML workstation software controlling production-line tooling via serial/TCP, barcode scanner integration, BLE testing, and traceability from PCB intake through final lot assignment.
For connected systems, we build mobile apps and server infrastructure around real devices: BLE/BT mobile applications, telemetry ingestion, admin portals, installer utilities, and operational dashboards. One deployed system processes data from 20k+ LoRa collectors across two cities.
Most work is delivered by a small senior team. We emphasize reproducible builds, CI, clear handover, documented risks, and exit-ready delivery so clients are not locked into us.
Best-fit projects include legacy C++/C# stabilization, build recovery, Windows/Linux migration, Qt modernization, hardware-adjacent operational software, BLE mobile apps, and device telemetry platforms.
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Min project size
$1,000+
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Hourly rate
$50 - $99 / hr
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Employees
2 - 9
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Locations
Białystok, Poland
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Year founded
Founded 2019
1 Locations
- Białystok , Poland
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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)
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