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Jann-Erik S.
@je_schindler
Level 1
Professional software engineer and infrastructure expert from Berlin, Germany
Germany
German, English
About me
I am a software developer based in Berlin, Germany, specializing in Laravel, backend development, and technical infrastructure. I build and maintain web applications, APIs, server setups, deployments, and monitoring systems. I also help with refactoring, performance optimization, technical audits, and production readiness. This includes reviewing AI-assisted code and making it stable, secure, and maintainable. I work fast, independently, and pragmatically, with a strong focus on clean implementation and reliable results.
Skills
Jann-Erik S.
$70/hour
Offline •
Average response time: 1 hour
See my services
Full Stack Web Applications
I will be your PHP laravel web developer
Hosting & Domain
I will install, setup and configure your website, web app or server
Want to work on an hourly basis?
Tell Jann-Erik S. what you need.
$70
/
hourPortfolio
Work experience
Student Researcher
TU Berlin • Part-time
Sep 2024 - Present • 1 yr 11 mos
At TU Berlin, I work as a Student Researcher in the development of autonomous drones and drone swarms. My work focuses on both onboard and offboard software for sensor integration and motor control, as well as AI-based mapping using cameras and LiDAR systems.
Senior Software Engineer
Castapp • Freelance
Jan 2023 - Present • 3 yrs 7 mos
At Castapp, I work as a Senior Software Engineer and am responsible for a large part of the software development. I also oversee the planning and maintenance of the server infrastructure and am closely involved in making key technical decisions that shape the platform’s architecture and future development.
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
1-5 out of 32 Reviews
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michael_plothe
Germany
Sehr kompetenter und professioneller Kontakt. Danke, gerne wieder.
Seller's Response
Helpful?
barmettlerict
Switzerland
Helpful?
s_k_hamburg
Repeat Client
Germany
Outstanding experience from start to finish. The communication was professional and responsive throughout the entire project — every question was answered promptly and thoroughly, which made collaboration effortless.The coding expertise really stood out. Clean, well-structured code that followed best...
Helpful?
s_k_hamburg
Repeat Client
Germany
Sehr kompetenter Entwickler mit sauberem Code, schneller Auffassungsgabe und praxisnahen Lösungen. Er arbeitet äußerst zuverlässig, liefert pünktlich ab und denkt bei Details mit. Die Kommunikation war klar und unkompliziert. Absolut empfehlenswert für alle, die Wert auf Qualität, Effizienz und professionelle Ergebnisse legen.
Seller's Response
Helpful?
cybertiseeu
Germany
Unglaublich kompetent, super cleaner code, Auge für wichtige Details und gute Kommunikation- wir sind mehr als zufrieden mit dem Ergebnis und können Jann-Erik wärmstens weiterempfehlen!
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