Fari Software GmbH

Making existing systems manageable again — debugging, performance, stabilization.

We help teams when software gets unstable, performance degrades, or grown-over code becomes unclear. Focus: C++, Python and systems-level environments.

Discuss a technical problem Typical problem situations

Symptoms

Does this sound familiar?

Existing systems rarely fail in spectacular ways. Usually it's a slow drift: changes take longer, bugs are harder to pin down, and no one is quite sure anymore where the real cause sits.

  • Crashes or sporadic misbehavior that nobody can cleanly explain.
  • Performance problems with no obvious cause.
  • Grown-over code that no one really has a firm grip on anymore.
  • Technical debt that makes changes unnecessarily risky and slow.
  • Manual or fragile test and deployment workflows.
  • Systems built under time pressure that now lack clarity and control.

This is exactly where we help teams regain clarity and the ability to act technically.

Services

What we actually help with

Not generic development services for anything and everything — targeted support for hard technical problems in existing systems.

Debugging & root-cause analysis

Crashes, sporadic misbehavior, memory issues, race conditions, other hard-to-explain bugs.

Performance analysis & optimization

When systems get too slow, unstable, or hard to control under load.

Stabilization & targeted modernization

Grown-over systems with legacy code, technical debt, missing clarity, high uncertainty around changes.

Test automation & operational relief

When teams still have to test, deploy, or operationally babysit too much by hand.

How we work

We don't come for slide decks, moderation, or symbolic politics. We come when a technical problem needs to be understood and solved.

  • ✓ Fast, independent onboarding into existing systems
  • ✓ Finding the actual root cause instead of treating symptoms
  • ✓ Pragmatic improvements with an eye on maintainability and value
  • ✓ Direct collaboration with a small, clearly responsible core team
  • ✓ Low coordination and supervision overhead on the client side

Who this fits

  • ✓ Teams that need to evolve, stabilize, or rescue an existing technical system
  • ✓ Teams with clear points of contact and short decision paths
  • ✓ Situations where fast technical support is needed
  • ✓ Contexts where a problem should actually get solved, not discussed for months

Less of a fit if you are looking for:

  • — Pure greenfield product development without an existing system
  • — Primarily political architecture or stakeholder roles
  • — Long-term staffing without a clear technical bottleneck
  • — Moderation instead of technical problem-solving

Engagements

Ways we can work together

Depending on the situation, we can help in different ways — from a first technical assessment to a hands-on engagement inside the system.

Entry

Technical first assessment

For concrete problems where clarity is needed first: what is likely the real problem? How to approach it sensibly? Is a deeper engagement worthwhile?

—Unclear technical problems

—A first read before committing to bigger work

—An experienced technical outside perspective

Diagnosis

Analysis & recommendation

Structured analysis of an existing problem with a technical assessment, prioritization, and concrete next steps for the team.

—More complex technical situations

—Grown-over systems with several possible causes

—Orientation and a structured way in

Hands-on

Direct technical support

Hands-on engagement in existing systems for analysis, stabilization, optimization, or targeted modernization — remote or on site if needed.

—Acute technical bottlenecks

—Concrete problems that need implementation

—Not just talking — doing

Which format makes sense depends on the problem, urgency, and the team’s existing knowledge of the system. Tell us briefly what it is about →

About us

Fari Software GmbH

A small software boutique based in Böblingen, Germany

AutomotiveSemiconductorsBioTechLogistics

Fari Software is a small, specialized GmbH based in Böblingen, Germany. We help teams make existing technical systems manageable again — where a system is unstable, performance is a problem, or no one is quite sure anymore where the real cause lies.

We work hands-on: reading code, debugging, measuring, optimizing. Concept papers are not our business.

Experience across automotive, semiconductor, biotech and logistics contexts — especially in technically demanding legacy systems that need clarity and resolution.

Your main contact

Matthias Spiller

Matthias Spiller

Managing director & software engineer

Over 20 years of experience in complex technical systems, focus on C++, Python and systems-level environments. "Fari" is Esperanto for: to do, to make. That pretty much sums up the work.

Contact

Let's talk.

Have a concrete technical problem, or want to gauge whether we are the right fit? Write us a short note — we usually respond within 24 hours with a first take.

info@fari-software.de

No form overhead. No waiting list. Just a direct email.