Sr. Software Engineer

Mondo
New York, NY

Apply now: Senior Full-Stack Engineer, location is remote. The start date is ASAP for this permanent position.

Job Title: Senior Full-Stack Engineer

Location-Type: Remote

Start Date Is: ASAP

Duration: Permanent

Compensation Range: 165,000-180,000/year

Job Description:
Lead full-stack development across modern .NET and React systems while modernizing and optimizing backend services.

Day-to-Day Responsibilities:

  • Migrate backend systems from SQL Server to MongoDB

  • Build, scale, and optimize .NET APIs

  • Develop modern React (TypeScript) frontends

  • Tune performance across database, API, and UI layers

  • Participate in Agile ceremonies (scrums, planning, reviews)

  • Collaborate closely with Product Managers and engineers

  • Contribute across frontend, backend, and API layers

Requirements:

  • Must-Haves:

    • React (TypeScript)

    • .NET & C#

    • SQL Server & MongoDB

    • GraphQL & API development

    • AWS

    • Agile/Scrum experience

    • Comfortable with peer code reviews and feedback

    • Cursor

  • Nice-to-Haves:

    • Kubernetes / EKS

    • Healthcare or SaaS background

    • Experience with system modernization or migrations

Posted 2026-02-03

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