Onlano
.NET DevelopmentOnsite

Senior .NET Backend Developer

Optimus Search - Company

Prenzlauer Berg, Berlin, ๐Ÿ‡ฉ๐Ÿ‡ช GermanyFull-time - Senior (4-7 years)0 applicantsCloses Jun 15, 2026

Salary

EUR 60,000 - 80,000 / year

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Job description

Role overview

Optimus Search is seeking a Senior .NET Backend Developer to design and implement robust backend systems. The ideal candidate will leverage .NET Core expertise to build scalable solutions while collaborating with cross-functional teams to optimize IT system integrations.

Responsibilities

  • Design and develop high-performance backend applications using .NET Core
  • Architect complex APIs and database solutions with MySQL/MS SQL
  • Optimize system performance and maintain technical documentation
  • Mentor junior developers and review code quality
  • Partner with frontend teams to align integration requirements

Requirements

  • 4+ years backend development experience with .NET
  • Proven expertise in API design and database architecture
  • Bachelor's/Master's in Computer Science or equivalent
  • Strong problem-solving skills for system integration
  • Experience with agile development methodologies

Benefits

  • Competitive salary (โ‚ฌ60k-80k)
  • Flexible work arrangements
  • Professional development budget
  • Collaborative tech team environment
  • Performance-based bonuses

Responsibilities

  • Design and develop high-performance backend applications using .NET Core
  • Architect complex APIs and database solutions with MySQL/MS SQL
  • Optimize system performance and maintain technical documentation

Requirements

  • 4+ years backend development experience with .NET
  • Proven expertise in API design and database architecture
  • Bachelor's/Master's in Computer Science or equivalent

Benefits

  • Competitive salary (โ‚ฌ60k-80k)
  • Professional development budget

Keywords

.NET CoreC#MySQLMS SQLAPI DevelopmentSoftware Architecture