System Engineering, Low-Level R&D, Security Audits & Web3 Infrastructure Partner
We’re a team of system engineers, security researchers, and builders who ship production-grade software where performance, correctness, and security actually matter.
No over-engineering. No theater. Just clean, documented work you can run in prod and defend under pressure.
What we do:
Low-level and systems engineering in C, C++, and Rust
Systems software and driver development for Windows, Linux, and macOS
Write low-level code: OS internals, performance-critical components, platform integration
Reverse engineering
Security audits for mobile networks and local networks
Security audits for software
Do R&D and security research: reverse engineering, malware and exploit analysis
Build lean PoCs that prove the point fast
Design reliable systems and scale only when the numbers demand it
Deliver blockchain systems: smart contracts, nodes, indexers, bots, infra
Deliver MEV and performance engineering with real constraints
SaaS Engineering Resilient, scalable, minimalistic systems that stay maintainable.
HFT and MEV Engineering Latency, optimization, and adversarial environments handled with discipline.
Consulting Direct technical decisions, trade-offs, and execution plans.
Min project size
$5,000+
Hourly rate
$50 - $99 / hr
Employees
10 - 49
Year founded
Founded 2022
No have been added yet...
Pricing Snapshot
Min. project size
$5,000+
Avg. hourly rate
$50 - $99
/hr
Rating for cost
5
/5
What Clients Have Said
SToFU Systems offers good value for cost, with clients highlighting their budget-friendly pricing and effective project execution. They typically engage small teams (2-5 employees) and deliver projects on time, ensuring a smooth collaboration experience.
SToFU Systems developed custom internal software for an SEO agency. The team analyzed the client's SEO processes and built a tool to automate routine tasks and centralize data.
SToFU Systems delivered a tool that helped the client cut manual work, speed up routine SEO tasks, and ensure smoother operations. The team was organized, kept the client updated, and reacted quickly to changes. Their ability to take ownership and build solid, maintainable software stood out.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the Former CEO of pro-fits.agency
Describe what your company does in a single sentence.
Digital SEO Agency
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire SToFU Systems to accomplish?
Reduce manual work and improve speed and efficiency of daily SEO operations.
Build custom internal software to automate and simplify SEO workflows.
Create a stable and scalable system for SEO data processing and reporting.
SOLUTION
How did you find SToFU Systems?
Online Search
Other
Why did you select SToFU Systems over others?
Great culture fit
Good value for cost
Referred to me
How many teammates from SToFU Systems were assigned to this project?
2-5 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
The scope of work covered analysis of our SEO processes and development of custom internal software to automate routine tasks and centralize data.
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
We cut a lot of manual work, made routine SEO tasks faster, and got a single internal tool that the team uses every day. Fewer mistakes, quicker turnaround, smoother operations as workload grew.
Describe their project management. Did they deliver items on time? How did they respond to your needs?
Everything was organized and easy to follow. They delivered on time, kept us updated, and reacted quickly when we asked for changes or had new priorities.
What was your primary form of communication with SToFU Systems?
Virtual Meeting
Email or Messaging App
What did you find most impressive or unique about this company?
They truly care about doing things right. They take ownership, communicate honestly, and build software that is solid and simple to maintain, not “quick hacks”.
Are there any areas for improvement or something SToFU Systems could have done differently?
No major improvements. The process was smooth, and any small issues were solved quickly through direct communication.
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
4.5
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
Custom Software Dev Services for Technology Company
"I was impressed by the management's and the team's accountability."
Dec 30, 2025
Founder & CEO, Soft X Technology
Vladyslav Kopanko
Verified
IT Services
Tallinn, Estonia
1-10 Employees
Online Review
Verified
SToFU Systems provided custom software development services for a technology company. The team developed a C++ cybersecurity application based on the technical specifications provided by the client.
SToFU Systems successfully developed the application on time and according to the client's technical specifications. The team communicated perfectly and always on time through virtual meetings and email updates. The client praised the team's accountability and management.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the Founder and CEO of Soft X Technology
Describe what your company does in a single sentence.
Reliable and strong technology partner
We collaborated with SToFU Systems as a fellow technology partner on a complex low-latency trading project. From the start, the interaction was professional, efficient, and focused on results.
They operate on the same engineering wavelength: clear architecture, disciplined execution, and respect for performance constraints. Their team integrates smoothly with other tech vendors, communicates precisely, and takes full ownership of their part of the system,
They are easy to work with, technically strong, and dependable in high-pressure environments. For companies looking to partner with a serious, engineering-driven team, SToFU Systems is a solid and trustworthy choice!
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire SToFU Systems to accomplish?
Custom Software Engineering in Cybersecurity
SOLUTION
How did you find SToFU Systems?
Referral
Why did you select SToFU Systems over others?
Pricing fit our budget
Good value for cost
Referred to me
Company values aligned
How many teammates from SToFU Systems were assigned to this project?
2-5 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
C++ Cybersecurity Application Software development
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
The application was developed according to the tech specification and in time
Describe their project management. Did they deliver items on time? How did they respond to your needs?
The communication was perfect and always in time
What was your primary form of communication with SToFU Systems?
Virtual Meeting
Email or Messaging App
What did you find most impressive or unique about this company?
I was impressed by the management's and the team's accountability.
Are there any areas for improvement or something SToFU Systems could have done differently?
None.
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
Showing 1-2 of
2 Reviews
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