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Christopher Soeffing

Senior Software Engineer specializing in backend, microservices, and defense systems

Sigma DefenseDrexel UniversityMarlton, NJ28 Years ExperienceSenior Level

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About

Backend-focused engineer who stepped into a brand-new product and built most of a Go-based backend from scratch in a 3-7 person team, initially as the only backend developer. He designed core security and access-control systems like MFA and role-based authorization, owned complex workflow features such as seat licensing, and helped deliver a B2B SaaS dashboard that earned very positive client feedback.

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Key Strengths

  • Built a backend from scratch in a small startup-style team
  • Led backend development with 1-2 engineers under him
  • Implemented 80% of a new Go backend as the initial sole backend engineer
  • Designed and implemented MFA and role-based authorization
  • Strong security-focused backend design
  • Created expandable API authorization patterns
  • Built robust automated authorization and integration tests with Robot Framework
  • Handled complex license and approval workflows with evolving requirements
  • Collaborated effectively with DevOps on deployment, secrets, and migrations
  • Delivered client-facing product features that received very positive demo feedback
  • Adapted quickly from Java/Spring Boot to Go

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Experience

Senior Software EngineerSigma Defense · Apr 2025 – Present
Senior Software EngineerLockheed Martin · Jun 2020 – Mar 2022
CI/CD ConsultantASRC Federal · Nov 2019 – Jun 2020freelance
Senior Web DeveloperHibbert Group · Aug 2017 – Mar 2019
Senior Software EngineerK12 · May 2012 – Jul 2017
Senior Software EngineerAmerican Education Corp · Jul 2001 – Feb 2011
Director AEC EastAmerican Education Corp · Feb 2011 – May 2012
Software EngineerDolphin Inc · Aug 1996 – Feb 2000
Senior Software EngineerDolphin Inc · Feb 2000 – Jul 2001

Education

Drexel Universitybachelor, Chemistry

Awards

  • Dean's List - Drexel University

Languages

English

Publications

1 publication

Algorithm designData analysisEvent prediction

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Connect with Christopher

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Typically responds within 24 hours

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Christopher SoeffingSenior Software Engineer specializing in backend, microservices, and defense systems