Senior Backend Engineer (C# / Java) - Fully Remote

Threecolts; Warszawa; On-site; PLN 463,918 - 567,011; Full time

Benefits offered by this job

Company-wide offsites

Regular rate reviews

Bonus opportunities

Job summary

Threecolts is seeking a Software Engineer to take ownership of features in Inventory Lab, delivering high-quality solutions using C# and Java. You will design, build, and improve scalable services and APIs while collaborating with cross-functional teams.

The ideal candidate has 5–8+ years of experience, strong technical skills, and a mindset geared towards improving product reliability. The role offers a competitive salary of $140,000 per year and the flexibility of fully remote work.

Qualifications

• 5–8+ years of professional software engineering experience.
• Strong proficiency in C# and Java.
• Experience building and maintaining backend services and APIs.

Responsibilities

• Take ownership of features across Inventory Lab’s systems.
• Design and build clean, scalable services and APIs.
• Debug production issues and implement durable fixes.

Skills

C#

Java

REST APIs

SQL databases

AWS

Git

Job description

Threecolts is seeking a Software Engineer to take ownership of features in Inventory Lab, delivering high-quality solutions using C# and Java. You will design, build, and improve scalable services and APIs while collaborating with cross-functional teams.

The ideal candidate has 5–8+ years of experience, strong technical skills, and a mindset geared towards improving product reliability. The role offers a competitive salary of $140,000 per year and the flexibility of fully remote work.