bash — szymon@lcsolutions: ~

Lambda Complex Solutions — Precision Engineering. Complex Problems, Elegant Solutions. Software development & IT consulting.

szymon@lcsolutions:~$ cat ./intro.txt

> software development & IT consulting

I build robust software systems and help businesses make smarter technology decisions. Directly, without layers of bureaucracy.

szymon@lcsolutions:~$ ./lets_talk.sh

Let's talk What I do

szymon@lcsolutions:~$ ▌

vim — ~/about.md

cat ~/about.md

Senior engineer.
Direct collaboration.

I'm Szymon Matuszewski, a software engineer and tech consultant based in Poland. I've been writing code professionally since 2012, working across the full stack with a strong focus on backend systems and architecture.

Under the Lambda Complex Solutions brand, I take on complex engineering challenges that demand both technical depth and strategic clarity. You always work with the person actually doing the work. No junior hand-offs, no account managers, no overhead.

My focus is on delivering systems that last: clean architecture, well-considered trade-offs, and code a team can maintain and build on long after the engagement ends.

NIP 6852333617 lcsolutions.pl Poland (EU)
13+ years Professional software engineering since 2012
1:1 engagement Direct communication, your message reaches the engineer
EU / VAT ready Polish JDG, VAT registered, proper invoicing for B2B clients
cat — ~/.config/stack.conf

cat ~/.config/stack.conf

Tech stack

The tools I reach for most. Core languages are where I spend most of my time; the rest I know well enough to be useful.

core_languages

PHP Symfony Go C# Mono / XNA

database

PostgreSQL Query optimization MySQL Redis

frontend

JavaScript jQuery Angular React Vue

# frontend frameworks: working knowledge, not my primary focus

creative_tools

Photoshop Blender
bash — ./services.sh

./services.sh --list

What I can do for you

Two core areas where I deliver the most value, whether you need hands-on engineering or a clear-headed outside perspective.

Software Development

Custom software built to solve real problems, from greenfield projects to adding critical features to existing systems.

  • Web applications and APIs (backend-focused)
  • System design and scalable architecture
  • Code reviews, refactoring and legacy modernisation
  • Integrations with third-party services and platforms

IT Consulting

Strategic technology guidance when you need a senior engineer's perspective without the overhead of a full-time hire.

  • Technical architecture advisory and design
  • Technology selection and vendor evaluation
  • Codebase and infrastructure audits
  • CTO-on-demand for early-stage products
mutt — compose new message

mail szymon@lcsolutions.pl

Let's work together

Got a project in mind, a system that needs fixing, or just not sure where to start? Send a message. I read every inquiry myself and will get back to you as soon as possible.

lcsolutions.pl
Poland, available for remote and EU on-site

Your details are used only to respond to your enquiry.

Message sent

Thanks, I'll get back to you as soon as possible.