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Mid-Level Back-End Developer

Job in Phoenix, Maricopa County, Arizona, 85003, USA
Listing for: Yrefy LLC
Full Time position
Listed on 2025-12-30
Job specializations:
  • Software Development
    Backend Developer, C# / Unity Developer
Salary/Wage Range or Industry Benchmark: 90000 USD Yearly USD 90000.00 YEAR
Job Description & How to Apply Below

Who We Are

Join a collaborative engineering team delivering reliable, high-performance services for financial data systems. You’ll develop and maintain .NET APIs, integrate with internal and third-party systems, and help evolve our service architecture. Onsite in Phoenix with full family health coverage and flexible hours.

Mid-Level Back-End Developer

Location: Phoenix, AZ
Department: Software Development
Type: Full-time (Onsite, with flexible hours)
Compensation: Starting at $90,000/year

About the Role

We’re seeking five Mid-Level Back-End Developers to expand our platform’s API and service capabilities. You’ll design, implement, and support high-performance, maintainable code that integrates cleanly across multiple modules and external systems.

This role is hands‑on: building production-grade code, reviewing pull requests, and helping shape our architectural standards. You’ll work closely with Dev Ops, QA, and UI teams to ensure seamless delivery.

Key Responsibilities

API & Service Development

  • Design, build, and maintain RESTful APIs and background services in C#/.NET
    .
  • Implement integrations with internal systems and external financial APIs.
  • Optimize data access and storage using Entity Framework
    , SQL Server
    , and efficient query design.
  • Follow and enforce clean architecture
    , SOLID principles
    , and code quality standards.

Performance & Reliability

  • Profile, tune, and refactor slow endpoints and database queries.
  • Contribute to CI/CD pipelines and deployment automation via Azure Dev Ops
    .
  • Collaborate with QA and UAT teams to ensure production reliability.

Collaboration & Growth

  • Participate in design sessions, code reviews, and sprint ceremonies.
  • Communicate clearly across disciplines — UI, QA, Dev Ops, and Product.
  • Contribute to team documentation and shared coding practices.
What You Bring
  • 3–6 years professional experience in C# and .NET Core/.NET Framework
    .
  • Strong understanding of RESTful API design and microservice patterns
    .
  • Experience with Microsoft SQL Server
    , stored procedures, and performance tuning.
  • Familiarity with Azure services (App Service, Key Vault, Service Bus, Functions).
  • Competence with Git
    , branching strategies
    , and pull requests
    .
  • Experience integrating with CI/CD pipelines (Azure Dev Ops preferred).
  • Strong debugging, analytical, and communication skills.
  • Ability to balance shipping features with maintaining system stability.
What We Value
  • Problem solvers who propose solutions, not just identify issues.
  • Self‑awareness to spot gaps in your own work and communicate them.
  • Professionals who meet realistic deadlines without hand‑holding.
What We Offer
  • 100% Employer Paid Medical for Employee AND Whole Family Includes the Mayo Clinic
  • 401k/Roth Plan 4% Match with Immediate Vesting
  • Dental Insurance
  • Vision Insurance
  • Company Paid Term Life Insurance
  • Company Paid Short‑and Long-Term Disability Insurance
  • Voluntary Pet Discount Plan
  • Fully Subsidized Life Time Gym Membership*
  • Student Loan Repayment
  • Tuition Reimbursement
  • Catered Friday Lunches
  • Stocked Kitchens
  • Opportunity to Work at a Fast‑Growing Company
  • Must be authorized to work in the U.S. (no visa sponsorship available)
  • And More
Work Environment

This is a primarily onsite role in Phoenix with genuine flexibility. Core collaboration hours are 10 AM–3 PM — manage your schedule around that. We don’t track hours or micromanage — we hire professionals and treat them accordingly.

You’ll work with experienced engineers who value clean design, accountability, and getting things done right.

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