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Senior C# Developer – Onboarding Platforms

United States, New York Employment contract 180000.00 - 210000.00 USD / Year · Job Posted June 29, 2026
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Job Description

Harrington Starr has partnered with a leading global financial services organisation, seeking to hire a Senior C# Developer to join a high performing technology team focused on transforming client onboarding platforms. This is a high-impact opportunity to play a central role in building next-generation onboarding systems within a complex, regulated environment.

Job Responsibility

  • Collaborate with cross-functional teams to shape technical architecture
  • Design and build scalable onboarding web applications
  • Automate manual onboarding workflows and processes
  • Develop maintainable, testable solutions aligned to best practices
  • Translate business requirements into robust technical solutions

Requirements

  • 10+ years experience with C# and .NET
  • Cloud-based microservices architecture experience (AWS preferred)
  • Docker and containerisation experience
  • CI/CD, DevOps, and Infrastructure as Code (Terraform or equivalent)
  • TDD / BDD and database (SQL / NoSQL) experience

What we offer

  • Competitive base salary + performance bonus
  • Total compensation up to $210,000
  • Comprehensive Medical, Dental & Life Insurance
  • Funded certifications and professional development
  • Flexible hybrid working model

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