Senior .NET Engineers with over 10 years of experience

Posted 2 days ago

Worldwide

Needs to hire 5 Freelancers
Summary

Job Overview: We are a leading software staffing firm seeking an elite, Senior .NET Developer to help our client scale their core enterprise platform. We need a proactive problem solver who writes clean, maintainable, and test-driven code. Key Responsibilities: - Design, build, and maintain scalable, secure, and robust .NET applications. - Develop RESTful APIs and microservices to integrate with third-party systems. - Write complex SQL queries and optimize database performance in SQL Server. - Collaborate with product managers, QA teams, and UI/UX designers in an Agile environment. - Write clean unit tests and participate in code reviews to ensure high-quality deliverables. - Troubleshoot, debug, and upgrade existing legacy systems to modern .NET standards. - Have an experience with architecting a cloud system. Required Qualifications & Skills: - 10+ years of professional experience in software development. - Proficiency in C#, .NET Core / .NET 8, and ASP.NET Core. - Strong front-end experience using React.js, Angular. - Solid understanding of relational databases (SQL Server, T-SQL) and Entity Framework. - Experience building and consuming web services (REST, SOAP).Familiarity with cloud environments (AWS, Azure) and CI/CD pipelines. - Exceptional communication skills and a proven track record of delivering projects on time. - Experience with manage or lead a team. - Must have a native English

  • More than 30 hrs/week
    Hourly
  • 6+ months
    Duration
  • Expert
    Experience Level
  • $20.00

    -

    $30.00

    Hourly
  • Remote Job
  • Complex project
    Project Type

Contract-to-hire opportunity

This lets talent know that this job could become full time.
Learn more
Skills and Expertise
Mandatory skills
Microsoft SQL Server
API Integration
Activity on this job
  • Proposals:20 to 50
  • Last viewed by client:2 days ago
  • Interviewing:
    6
  • Invites sent:
    8
  • Unanswered invites:
    2
About the client
Member since Jun 21, 2026
  • United States
    Houston1:56 AM
  • Tech & IT
    Mid-sized company (10-99 people)

Explore similar jobs on Upwork

Application InstallationFixed-price‐ Posted 3 weeks ago
Android
Smartphone
Tablet
iPhone
Solidity
Ethereum
Smart Contract
Blockchain
Cryptocurrency
Blockchain Architecture
ERC-20

How it works

  • Post a job icon
    Create your free profile
    Highlight your skills and experience, show your portfolio, and set your ideal pay rate.
  • Talent comes to you icon
    Work the way you want
    Apply for jobs, create easy-to-by projects, or access exclusive opportunities that come to you.
  • Payment simplified icon
    Get paid securely
    From contract to payment, we help you work safely and get paid securely.
Want to get started? Create a profile

About Upwork

  • Rating is 4.9 out of 5.
    4.9/5
    (Average rating of clients by professionals)
  • G2 2021
    #1 freelance platform
  • 49,000+
    Signed contract every week
  • $2.3B
    Freelancers earned on Upwork in 2020

Find the best freelance jobs

Growing your career is as easy as creating a free profile and finding work like this that fits your skills.

Trusted by

  • Microsoft Logo
  • Airbnb Logo
  • Bissell Logo
  • GoDaddy Logo